Apparatus and method using the movement of object placed between wiper arm assembly and windshield glass to prevent sticking of rubber strip with the windshield glass of vehicles

Abstract

ABSTRACT The rubber strip or the synthetic rubber strip of the wiper blade get damaged due to sticking or fixing or adhering or attaching with the surface of windshield glass. When the wiper is not used for several days i.e. wiper blade is not rotated or moved on the windshield glass due to reasons like no rainfall condition, no use of the car for several days or any other, in such conditions the rubber strip or the synthetic rubber strip of the wiper blade get stick or fix or adhere or attach to the surface of windshield glass continuously. If rubber strip get stick or fix or adhere or attach to windshield glass, then any attempt to start the wiper blade or the rotation / movement of the wiper blade damages or breaks the rubber strip of the wiper blade. This continuous sticking of the rubber strip or synthetic rubber strip of the wiper blade can be prevented or avoided by using an apparatus and method invented here. The method and the apparatus invented here does not allow permanent sticking or adhering or attaching or fixing of the rubber strip of the wiper blade with the windshield glass. The momentary and /or periodic and / or scheduled and/ or conditional contact or touch break (isolation) of the rubber strip of the wiper blade with the windshield glass, will prevent sticking or adhering or fixing or attaching with windshield glass, this will help to prevent or avoid the damage of the rubber strip of the wiper blade. This will help to increase the life span of the rubber strip of the wiper blade. Further the early replacement of the wiper blade can also be prevented. This invention presents method and apparatus to prevent the damage of the rubber strip and to remove the light weight objects or leaves of trees or pieces of ice etc. which are accumulated on the rubber strip of the wiper blade near the contact with windshield glass. The method and apparatus invented here uses a small rod type object which is fit or placed or applied between the wiper arm assembly and the windshield glass and on the default position (rest position or usual position) of the wiper arm assembly. The rod type object moves in linear direction to push the wiper arm and wiper blade assembly in forward direction (away from windshield glass) to break the contact between the rubber strip of wiper blade and the surface of the windshield glass. The rod type object is pulled back to re-establish the contact between the rubber strip of wiper blade and the surface of the windshield glass, so that the wiper can be moved or rotated on the windshield glass for removal of rain water. The method and apparatus invented here can be applied / used manually and / or fully automatically for momentarily and /or temporarily and /or periodically and / or as per prior set schedule and / or existing requirement and / or daily. Further the invented method and the apparatus can be applied and used irrespective of the ON or OFF status of the car. The method can be applied in any environmental condition. If the car is not in use i.e in OFF condition (and in parked state) then also the method and apparatus can be applied automatically and used for the illustrated purposes. The method is based on the systematically and momentarily and temporary contact break between the rubber strip of the wiper blade and the windshield glass. The methods and apparatus invented here break the contact between the rubber strip of the wiper blade and the windshield glass. The applied contact breaks are fully automatic and /or manually controlled. The contact break methods and mechanisms are momentary and / or periodic and / or daily and /or applicable as per the requirements in ON and / or OFF conditions of the car, vehicle or heavy vehicles. The momentarily contact breaks are applied when the wiper is in rest position (default position) on the surface of windshield glass i.e. wiper is not rotating or not moving on the surface of windshield glass.

Specification

Description:Apparatus and method using the movement of object placed between wiper arm assembly and windshield glass to prevent sticking of rubber strip with the windshield glass of vehicles
Names of the inventers - 1) Mr. Shamkumar Bhimrao Chavan 2) Mrs. (Dr.) Poonam Shamkumar Chavan
ABSTRACT
The rubber strip or the synthetic rubber strip of the wiper blade get damaged due to sticking or fixing or adhering or attaching with the surface of windshield glass. When the wiper is not used for several days i.e. wiper blade is not rotated or moved on the windshield glass due to reasons like no rainfall condition, no use of the car for several days or any other, in such conditions the rubber strip or the synthetic rubber strip of the wiper blade get stick or fix or adhere or attach to the surface of windshield glass continuously. If rubber strip get stick or fix or adhere or attach to windshield glass, then any attempt to start the wiper blade or the rotation / movement of the wiper blade damages or breaks the rubber strip of the wiper blade. This continuous sticking of the rubber strip or synthetic rubber strip of the wiper blade can be prevented or avoided by using an apparatus and method invented here. The method and the apparatus invented here does not allow permanent sticking or adhering or attaching or fixing of the rubber strip of the wiper blade with the windshield glass. The momentary and /or periodic and / or scheduled and/ or conditional contact or touch break (isolation) of the rubber strip of the wiper blade with the windshield glass, will prevent sticking or adhering or fixing or attaching with windshield glass, this will help to prevent or avoid the damage of the rubber strip of the wiper blade. This will help to increase the life span of the rubber strip of the wiper blade. Further the early replacement of the wiper blade can also be prevented. This invention presents method and apparatus to prevent the damage of the rubber strip and to remove the light weight objects or leaves of trees or pieces of ice etc. which are accumulated on the rubber strip of the wiper blade near the contact with windshield glass. The method and apparatus invented here uses a small rod type object which is fit or placed or applied between the wiper arm assembly and the windshield glass and on the default position (rest position or usual position) of the wiper arm assembly. The rod type object moves in linear direction to push the wiper arm and wiper blade assembly in forward direction (away from windshield glass) to break the contact between the rubber strip of wiper blade and the surface of the windshield glass. The rod type object is pulled back to re-establish the contact between the rubber strip of wiper blade and the surface of the windshield glass, so that the wiper can be moved or rotated on the windshield glass for removal of rain water. The method and apparatus invented here can be applied / used manually and / or fully automatically for momentarily and /or temporarily and /or periodically and / or as per prior set schedule and / or existing requirement and / or daily. Further the invented method and the apparatus can be applied and used irrespective of the ON or OFF status of the car. The method can be applied in any environmental condition. If the car is not in use i.e in OFF condition (and in parked state) then also the method and apparatus can be applied automatically and used for the illustrated purposes. The method is based on the systematically and momentarily and temporary contact break between the rubber strip of the wiper blade and the windshield glass. The methods and apparatus invented here break the contact between the rubber strip of the wiper blade and the windshield glass. The applied contact breaks are fully automatic and /or manually controlled. The contact break methods and mechanisms are momentary and / or periodic and / or daily and /or applicable as per the requirements in ON and / or OFF conditions of the car, vehicle or heavy vehicles. The momentarily contact breaks are applied when the wiper is in rest position (default position) on the surface of windshield glass i.e. wiper is not rotating or not moving on the surface of windshield glass.


Field of the invention
This invention relates to an apparatus and method to prevent or avoid the damage of rubber strip / synthetic rubber strip of the wiper blade, by preventing its sticking or adhering or attaching or fixing with windshield glass. The rubber strip / synthetic rubber strip of the wiper blade is placed / positioned on the windshield glass of the vehicle like four wheeler car, truck, bus, jeep and other similar like aeroplane or helicopter . The method and the apparatus invented here do not allow permanent sticking or fixing or adhering or attaching of the rubber strip of the wiper blade with the windshield glass due to its continuous contact. The life span of the rubber strip of the wiper blade can be increased using the invented apparatus and method. Due to increased life span of the rubber strip, the wiper blade replacement time also increases. Further the leaves of the trees or dust particles or other light weight objects or snow which get accumulated on the rubber strip of the wiper blade near the contact of the windshield glass can be dropped down using the invented apparatus and method. The invention belongs to the disciplines of electronics engineering, mechanical engineering, mechatronics engineering.
Background of the invention
Wiper blade assemblies are used to shift the flow of rain water from middle area of the windshield glass to other sides. Mainly wiper blades are used to maintain clear visibility for driver and passenger by turning / shifting away the flow of rain water from middle area of windshield glass. The rotating / moving speed of the wiper can be varied with variation of rainfall and is usually controlled through the wiper speed control switch. Drivers / people use facility of wiper rotation / movement mostly in rainy season to drain the water and maintain visibility.
In atmospheric conditions where continuous summer or winter (no rainfall) is there that time wipers are not used. In few countries the season of summer last longer for few months. During this period wiper is not used. Wiper remains in rest position (default position) on windshield glass when it is not in use. During the season of summer / hot temperatures and / or especially when wipers are not in use or wipers are not moved for several days, the rubber / synthetic rubber strip of wiper blade get stick or fix or adhere or attach with the windshield glass. The rubber strip get stick or fix or adhere or attach with the windshield glass in such a way that any attempt to move the wiper arm damages or breaks or cut the rubber strip part of the wiper blade. During this period the rubber strip also becomes hard. In such condition it is required to replace the wiper blade due to cut / damage of the synthetic rubber / rubber strip of the wiper blade. Another problem is, when the wiper blade is not in use, the dust particles, light weight objects or small leaves of trees get accumulated on the wiper blade near the contact of rubber strip with the windshield glass.
Thus there is need of method and apparatus to prevent or avoid the sticking or adhering or fixing or attaching of the rubber strip of the wiper blade with the windshield glass and to avoid damage of rubber strip of wiper blade due to continuous contact / touch of rubber strip with windshield glass. Additionally it should not accumulate dust particles / small tree leaves near contact of rubber strip and windshield glass. This invention presents apparatus and method to prevent the sticking or fixing or adhering or attaching of the rubber strip of wiper blade with windshield glass. Thus it helps to increase the life span of the rubber strip of wiper blade, it avoids the early replacement of the wiper blade. The presented invention also facilitate to drop down the leaves of trees or the light weight objects which get accumulated on the rubber strip of the wiper blade.

Prior art
Figure 1 shows wiper arm assembly and figure 2 shows wiper blade assembly. As a prior art the windshield wiper blades have rubber strip / synthetic rubber strip to move away the rain water for more visibility of the driver and passenger. The wiper rotation control switch have few positions / points , by moving the rod of the wiper rotation control switch the speed of the movement / rotation of the wiper blade can be controlled. Typically, the movement of the wiper blade / arm assembly is in back and forth direction and on the surface of the windshield glass. Further the rubber strip / synthetic rubber strip of the wiper blade is in continuous touch / contact with the windshield glass in both rest position (default position) and in rotating or moving position. It means once the rubber strip of the wiper blade is positioned /placed on the surface of windshield glass the contact / touch remains forever till its replacement or any manual intervention is done like washing the car. A wiper system has electric motor under the bonnet or hood, its shaft revolves circularly around its own axis. This angular motion of the electric motor is converted to back and forth movement of the wiper blade assembly on the surface of windshield glass, using the middle linkages, rods and transmission parts.
It is important to note here that, there is no mechanism using the linearly movable rod type object between the wiper arm assembly and the windshield glass to move the wiper arm assembly in forward and reverse direction i.e. away from the windshield glass and / or towards the windshield glass automatically and / or momentarily and / or using the wiper speed control switch for breaking the contact between the rubber strip of the wiper blade and the surface of windshield glass for avoiding the sticking or fixing or adhering or attaching of the rubber strip with the windshield glass. It means there is no mechanism is in existence, based on linearly movable rod type object, placed between the windshield glass and the wiper arm assembly to isolate or separate the rubber strip of the wiper blade from the windshield glass to prevent sticking or adhering or fixing or attaching of the rubber strip with windshield glass and to avoid the damage of the rubber strip. Such an isolating mechanism to avoid sticking of the rubber strip, is not available automatically and /or momentarily and / or using wiper control switch. Further the dust particles, light weight objects or leaves etc. get accumulated on the rubber strip near the contact of the windshield glass. There is no facility to remove such light weight particles either automatically or by using the wiper speed control switch.

Summary of the invention
In this invention, the joint 1 (101) is the joint which is internally connected to the electric motor (below the hood or bonnet) of the wiper arm assembly rotation / movement control system. The wiper control system rotates the electric motor connected to the joint 1 (101) thereby moving / rotating the wiper blade assembly on the windshield glass of the car / vehicle. Stationary linkage (102) is the connecting linkage between the joint 1 (101) and the joint 2 (103). Joint 2 (103) is the joint through which wiper arm (104) and wiper blade assembly (200) can be moved away from the windshield glass and also towards the windshield glass. As a prior art joint 2 (103) is equipped with spring, screw and nut assembly.
Wiper arm assembly (100) is the assembly of wiper arm (104) and wiper arm pins (105) for locking the wiper blade (200). The wiper blade (200) is the assembly which holds the rubber strip / synthetic rubber strip (204) with the help of middle linkages (203). The rubber / synthetic rubber strip (204) moves / rotates on the windshield glass to remove / drain away the rain water. Windshield glass (300) is the glass which protects the driver / internal passengers from external wind flow and /or rainfall. Windshield glass (300) can be the front side / backside glass on which wiper assembly is fit. Thus windshield glass (300) is the front side or back side glass of three or four wheeler vehicle or car or heavy buses or trucks. Momentarily contact break means to break the contact / touch of the rubber strip of the wiper blade with the windshield glass for very short duration like half second or one second or two seconds etc. Temporary contact break means breaking the contact of the rubber strip of the wiper blade with the windshield glass for temporary period like for few seconds or few minutes or few hours or few days. The contact is re-established by reverse movement of the wiper arm assembly and wiper blade assembly so that the wiper can be used to remove out or side-line the rain water from the windshield glass. The rest position of the wiper is the default position where the wiper arm assembly and wiper blade assembly are kept when it is not in use.
This invention illustrates the apparatus and method to avoid the sticking or fixing or adhering or attaching of the rubber strip (204) to the surface of windshield glass due to long time continuous contact. This invention solves the problem of continuous sticking or adhering or fixing or attaching of the rubber / synthetic rubber strip of wiper blade assembly for momentarily and daily and/or periodically breaking the contact of rubber strip of wiper blade with the windshield glass. When rainfall does not occur during summer or hot temperatures, the wiper blades are not in use. Hence due to continuous contact and non-movement of the wiper blade, the rubber strip gets in touch with the windshield glass for longer period. Due to this the rubber strip get stick or fix or adhere or attach with the windshield glass and any attempt to rotate or move the wiper blade breaks or cut the rubber strip / synthetic rubber strip. In present condition any mechanism based on linear movement of rod type object is not in existence to daily and systematically isolate or break the continuous contact of the windshield glass and the rubber strip of the wiper blade. Also any mechanism based on linear movement of the rod is not developed to remove the dust particles, light weight particles or leaves of trees accumulated on the rubber strip of the wiper blades near the contact of the windshield glass. The wiper movement control switch near the steering wheel, controls / regulates the speed of the rotation of wiper arm and wiper blade assembly. But there is no mechanism based on linearly moving rod type object, to momentarily break the contact between the rubber strip of the wiper blade and the windshield glass. Any such a contact breaking mechanism will surely avoid the damage of the rubber strip due to continuous sticking. Also such a method and apparatus can be used to remove the dust particles, light weight objects like leaves of the trees which get accumulated on the rubber strip of the wiper blade.
In this invention the wiper arm is pushed away from the windshield glass i.e. isolated for momentarily and for temporary period from the windshield glass surface. Car drivers have habit to not use or to not rotate or move the wiper arm and wiper blade assemblies when weather is clean in season like summer or in high temperature conditions. If rain does not fall for large number of days, then the rubber strip / synthetic rubber strip of wiper blades get stick to the windshield glass. The rubber / synthetic rubber strip get hardens also. Further due to continuous touch/contact of the rubber strip of wiper blade to the windshield glass, the dust particles and leaves of the trees get accumulated on the rubber strip of the wiper arm assembly.
This invention invents a method / process and a system/ apparatus to periodically and momentarily isolate or break the contact of the rubber strip / synthetic rubber strip of the wiper blade assembly with the windshield glass, using forward and backward movement of the middle object. This type of mechanism will avoid the sticking or fixing or adhering or attaching of the rubber strip with the windshield glass and /or hardening of the rubber strip. Thus this invention will help the wiper blade to be used for longer time and it will prevent early replacement of the wiper blade due to damage of the rubber strip of the wiper blade.
In this invention, a rod type object is fit or fixed between the wiper arm assembly and the windshield glass. This rod type object is linearly moved in forward and backward direction. This rod type object is placed in the line of the rest or the default position of the wiper arm assembly on the windshield glass. This rod type object is moved or pushed in forward direction, so that it will push the wiper arm assembly away from the windshield glass. This will break the contact or the touch of the rubber strip of wiper blade assembly with the surface of windshield glass. The rod type object is pulled back (in backward direction), so that the contact is re-established between the rubber strip of wiper blade and the surface of the windshield glass. The joint 2 (103) is equipped with the spring, screw and nut assemblies. Hence due to the force of the spring, the wiper arm assembly moves in reverse direction (towards the windshield glass) as soon as the rod type object is pulled back by some method or action or mechanism. The rod type object is linearly moved systematically for momentarily and / or temporarily and / or pre-planned schedule and / or automatically and / or using the switch of the wiper speed / rotation control system placed near the steering wheel of the car.
The person skilled in art can fit this apparatus and method in the existing wiper systems. The rod type object is any object placed between the wiper arm assembly and the windshield glass. Its dimensions are selected such that it will provide contact break and re-establishment of the contact as illustrated in this invention. Such an object can be moved in linearly in forward and reverse (backward) direction using suitable mechanism as illustrated in figures.
Brief description of drawings
The figures shown here are not as per scale, they are for illustration purpose of the invented apparatus and method.
Figure 1 - Figure 1 shows the wiper arm assembly in which joint 1 (101) is used as rotating base. Stationary linkage (102) is connected to rotating base (101). Elements (101) and (102) are capable to withstand the weight of the entire wiper arm and wiper blade assembly during stationary and rotating / moving stages. Joint 2 (103) is a connecting node (joint) due to which the wiper arm (104) and wiper blade (200) get forward (away from windshield glass) and reverse (towards windshield glass) movements. Thus the element (103) is capable to move the entire wiper arm and wiper blade assembly. Element (104) is wiper arm which moves to move the wiper blade. Element (105) is / are holes or parts to which the wiper blade is locked. The wiper blade can be removed and replaced from (105).
Figure 2 - Figure 2 shows wiper blade assembly. It is used to hold the rubber / synthetic rubber strip which is moved / slide /rotated on the windshield glass to side-line / shift the rainwater flow to maintain clear visibility. It is constructed in such a way that it perfectly held the rubber strip and tries to maintain equal pressure on entire rubber strip.
The parts of this wiper blade assembly are: -
201- Metal / plastic frame to hold the rubber strip / synthetic rubber strip
202-Holes used to lock the wiper blade with wiper arm
203-Linkages between metal frame 201 and rubber strip / synthetic rubber strip 204
204- Rubber / synthetic rubber strip part which moves on windshield glass to drain / shift the rain water on both sides. This rubber strip part is in touch / contact with the windshield glass continuously. When wiper blade is not moved for several days especially in summer or hot temperatures, due to this the rubber / synthetic rubber strip hardens / get stick or fix or adhere or attach with the windshield glass.
Figure 3 shows a rod type object or an object (401) placed between the wiper arm assembly and the windshield glass on the rest or default position (in line with wiper arm assembly) of the wiper arm assembly. Figure 3 shows middle linkages to move the object (401) linearly. A gear type assembly (403) which converts the angular movement / rotation of the electric motor (404). The motor driver device or circuit and the intelligent microcontroller / microprocessor is used for linearly and systematically moving the object (401) to break and re-establish the contact between the rubber strip of wiper blade and the surface of the windshield glass.
Figure 4- Figure 4 shows a spring based mechanism in which rod like object (401) is moved linearly (in forward and reverse direction) using the energy of spring. In this case temporarily isolation is obtained between the windshield glass and the rubber strip of the wiper blade assembly.
Figure 5- It shows the arrangement in which the rod like object (401) is moved in linear direction using the effect of magnetic field. The current is passed through the coil for generation of magnetic field. The current and hence the magnetic field is controlled for the linear motion of the rod (401).
Figure 6 - It shows the manual system in which the rod type object (401) is linearly moved using manual techniques like using the finger. It temporarily breaks the contact or touch of the rubber strip of wiper blade with the windshield glass.

Detail description of the invention
During the rainy season, the wiper is daily used. Hence the rubber strip of the wiper blade does not stick or fix or adhere or attach to the windshield glass. During rainy season temperature is also lowered. However, in summer and hot temperature season, people do not use the wiper arm for several days. Hence the rubber strip of the wiper blade get stick or fix or adhere or attach to the surface of windshield glass. The sticking or adhering or fixing or attaching of the rubber strip damages the rubber strip, hence replacement of the wiper blade is required in this case. Due to sticking of the rubber strip, it gets hardened.
Figure 3 shows a mechanism in which the wiper arm assembly is moved in forward direction (away from the windshield glass) and in reverse or backward direction (towards the windshield glass). In this a rod type object (401) which moves in linear direction (forward and backward) is deployed. This rod type object (401) can be moved momentarily and / or periodically and/or temporarily and / or as per prior set schedule in both ON and OFF conditions of the car. Further the rod type object (401) can be moved as described in previous line automatically and / or using the wiper control switch placed near the steering wheel. The rod type object (401) can be of any shape, but its main function or purpose is to break the contact or touch between the rubber strip of wiper blade and the surface of windshield glass. Thus the rod type object (401) is used for isolation of rubber strip (204) of wiper blade for momentary and/or temporary and/or predefined schedule in both ON and / or OFF conditions of the car or vehicle. Further it can provide isolation either automatically or through the wiper control switch action by manually. Both automatic and / or manual functions can be provided. The rod type object (401) is placed between the surface of windshield glass and the wiper arm assembly, and is in line with the wiper arm assembly. The desired linear movement of the rod type object (401) is obtained by using connections or assembly of linkage to move the rod, gear type device or similar device connected to electric motor, such that with movement / rotation of the shaft of electric motor, the gear type device and linkage will convert the angular movement of the shaft of electric motor to the linear movement (forward and reverse or backward movement) of the rod type object (401). For angular movement of the electric motor, specialized electric motor driver circuit or integrated circuit is used. Further the motor is actuated or its rotation is controlled by the electric signals given by the controller or microprocessor or microcontroller or suitable intelligent controller. The intelligent controller is programmed with the schedule to automatically push the rod type object (401) in forward and the backward direction in ON and /or OFF conditions of the car or vehicle. So that the contact or touch between the rubber strip (204) of wiper blade and the surface of the windshield glass is broken or isolated with the forward motion of the rod type object (401). The linear motion i.e. forward and backward / reverse motion can be applied to the rod type object (401) by using the wiper speed / rotation control switch which is usually placed near the steering wheel and the driver. A sensing point or sensing position is fit to the rod of the wiper speed / rotation control switch, such that when the rod of the wiper speed / rotation control switch is moved or shifted to this position, the rod type object (401) is moved in forward direction for momentarily and /or temporarily. Such kind of controlling action of the rod type object (401) using the wiper speed / rotation control switch can be used to isolate the rubber strip (204) of wiper blade from the surface of windshield glass and also to drop down the leaves of trees or light weight objects or dust particles which are accumulated on the rubber strip (204) of wiper blade near the touch or contact of the windshield glass. In this way the control of the rod type object (401) i.e control of the movement of wiper arm assembly is given in the hands of person or the driver for linear movement of the rod as desired and as per requirement. A person skilled in art can design such a system in which the position of the rod of the wiper speed/ rotation control system is sensed electrically by using any intelligent controller or processor or microcontroller or microprocessor or any circuitry. Fixed electrical positions are given for different type of movements of the wiper arm assembly. e.g. for illustration purpose ,whenever rod of the wiper speed control switch is at default or rest position, it can be moved to first position so that the rod type object (401) is pushed in forward direction to move the wiper arm assembly in forward direction and slightly away from the windshield glass. By this method, any electrical position can be assigned for any kind of movement of the wiper arm assembly. Thus additional movement is applied to wiper arm assembly in forward and reverse direction using the rod of the wiper speed/rotation control switch. This is useful to break the contact as per the wish of driver or person and also to drop down the light weight objects accumulated on the rubber strip (204) of wiper blade assembly. The rod type object (401) can be moved in reverse or backward direction. The rod type object (401) have spring connected or attached between joint 2 (103) and wiper arm (104) with support of stationary linkage (102). After pushing the rod type object (401) in forward direction, the tension or pressure of the spring is exerted continuously on the wiper arm assembly. Hence when the rod type object (401) is pulled back in reverse or backward direction by the apparatus, the wiper arm assembly is moved back because of the tension or pressure of the spring attached to wiper arm assembly. This way the contact or touch between the rubber strip (204) and the surface of the windshield glass is re-established. Hence the rubber strip (204) of the wiper blade can be moved or rotated for moving or shifting away the rainwater from the windshield glass.
Figure 4 illustrates the method and apparatus, in which the rod type object (401) is moved linearly (in forward and backward direction ) by using the action of spring (420) or the spring like device which have elasticity which stores and releases the energy due to compression or expansion action. The spring driver as shown in figure 4 is any actuator type device , which compress and expand the spring to give linear motion to rod type object (401), so that it can move in forward and backward direction. The linkage can also be connected between the spring and the rod type object (401). The controller as mentioned in figure 4 is any intelligent electronic or mechanical type of object which actuates the spring to apply linear motion to the rod type object (401). When signal is received from the controller, the spring driver assembly, releases or expands the spring, so that the rod type object (401) is pushed or moved in forward direction. Due to this action, the wiper arm assembly moves away from the windshield glass, thereby breaking the touch or the contact of the rubber strip (204) with the surface of the windshield glass. Upon getting signal from the controller, the spring driver assembly, applies compression of the spring so that the rod type object (401) is pulled back. Due to this action, the rubber strip (204) of the wiper blade gets in touch or contact with the surface of the windshield glass.
Using the illustrated apparatus and the method, the rod type object (401) can be moved for momentarily and /or temporarily and /or periodically and/ or as per the prior set schedule. Further it can be moved in ON and / or OFF conditions of the car. Using the apparatus and method illustrated here, the rod type object (401) can be moved automatically and /or using the wiper speed / rotation control switch placed near the steering wheel of the driver.
Figure 5 illustrates an apparatus and method, in which the linear movement of the rod type objects (401) is controlled using the coil (410). For such apparatus and method a coil and spring assembly is used to linearly move the rod type object (401). In this, the current is passed through the coil to generate magnetic field. The action of magnetic field and spring, pushes the rod type object (401) in forward direction. Hence the contact between the rubber strip (204) of wiper blade and the surface of the windshield glass get broken (isolated). When the current through the coil (410) is stopped, the magnetic field vanishes, and the rod type object (401) get pulled back. Due to the reverse or backward movement of the rod type object (401), the rubber strip (204) of wiper blade assembly get in touch or contact with the surface of windshield glass and can be used to remove away or shift away the rainwater from the windshield glass. Thus using the apparatus and method shown in figure 5 the linear motion of the rod type object (401) is controlled for momentarily and / or temporarily and /or as per pre-defined schedule and /or as per wish and/or in ON and/or OFF condition of the car. The rod type object (401) can be automatically regulated or controlled. The coil (410) can be energized, using the wiper speed / rotation control switch near the steering wheel. In such case, the electrical position is applied to rod of the wiper speed / rotation control switch. When the rod of the wiper speed / rotation control switch is placed at appropriate electrical position, it will give the signal to the intelligent controller or processor or microcontroller or microprocessor. This will give signal to the coil driver, the coil driver will pass the current through the coil to establish magnetic field. The generated magnetic field will push the rod type object (401) in forward direction to isolate the rubber strip (204) from the surface of the windshield glass. Thus signal can be applied through the wiper speed / rotation control switch to stop the current through the coil (410), to vanish the magnetic field and to pull back the middle linkage and/or the rod type object. The rod type object (401) can be controlled through manual intervention using the wiper speed / rotation control switch.
In rainy season the rotation / movement of the wiper blade on the windshield glass is performed regularly. In rainy season due to daily rotation of the wiper blade the contact breaking of the rubber strip (204) and windshield glass is not required. However momentarily, periodically and daily contact break mechanism will help to remove the dust particles, leaves of trees and other tiny objects which get accumulated on the rubber strip of the windshield glass. It is important to note that momentarily contact break is required for very few times. Rotation / movement of the rubber strip (204) of the wiper blade on the surface of the windshield glass and momentarily / temporarily contact break cannot be achieved simultaneously and parallel.
This invention will increase the life span of the rubber strip of the wiper blade. It will also prevent the damage of the rubber strip of the wiper blade due to sticking / adhering / attaching of the rubber strip with the windshield glass. Further this invention will help to remove the dust particles, leaves and other tiny objects which get accumulated / trapped on the wiper rubber / synthetic rubber strip due to its continuous and longer contact with the windshield glass. Even the facility (either manual through wiper control switch or automatic) of momentarily isolation between the rubber strip and the windshield glass, in rest / default position, while the car or vehicle is moving, will facilitate to remove/ drop down the leaves of trees or light weight objects from the rubber strip. The apparatus and method invented here is able to break the contact between the rubber strip of the wiper blade and the surface of the windshield glass. Due to this contact break i.e. automatic / manual contact breaking mechanism , the life span of the rubber can be increased and its damage can be avoided. Also this invention is capable to remove the dust particles / light weight objects/ leaves of the trees / snow particles which are accumulated on the rubber strip of the windshield glass. It is more convenient to apply the contact break mechanism when the wiper blade is in rest position i.e its default position on the windshield glass surface. The person skilled in the arts can incorporate the method and the apparatus invented here in the existing system used for the wiper rotation / movement with a care to keep proper and correct contact between the rubber strip and the surface of windshield glass. The proper and correct contact ensures uniform pressure on the rubber strip for good cleaning and removal of rain water from the windshield glass. The person skilled in art can easily incorporate this invented apparatus and method into existing system to get the benefits and advantages specified here.
Further the method and the apparatus illustrated in this invention are applicable for all wiper arm and wiper blade assemblies like at driver side, passenger side, back side etc.
Further the momentary contact break between the windshield glass and the rubber strip of the wiper blade can be done fully automatic, periodic, as per predefined schedule, as per the requirement and irrespective of the ON or OFF condition of the car or vehicle.
The momentary contact break may be applied either manually or automatically for the purpose of increasing the life span of the rubber / synthetic rubber strip of the wiper blade or for the purpose of dropping down the dust particles or leaves of the trees or light weight objects which are accumulated / trapped near the contact of the rubber strip of the wiper blade and the windshield glass. The method and the apparatus invented here also avoid the damage of the rubber strip due to sticking or fixing or adhering or attaching with windshield glass. It avoids sticking of rubber strip of wiper blade with the windshield glass.
The rod type object (401) can also be fixed or fit to the wiper arm assembly (instead of the windshield glass) to separate or isolate the wiper arm assembly from the windshield glass. In this case, one end of the rod type object (401) is permanently fit to the wiper arm assembly. When the rod type object (401) is pushed, the other end of rod type object (401) will touch the windshield glass, and the wiper arm assembly will be moved away from the windshield glass, this will break the contact or touch of the rubber strip of wiper blade with the windshield glass. Further the contact between the rubber strip of the wiper blade and the windshield glass can be re-established by pulling the rod type object (401) in reverse or backward direction. Thus after permanently fitting the rod type object (401) to the wiper arm , the linear movements of the rod type object (401) can be obtained to push the wiper arm away from the windshield glass and towards the windshield glass. Thus the contact of the rubber strip (204) with the windshield glass (300) can be broken as illustrated here. For the linear movement of the rod type object (401) the methods explained in figures 3 , 4 and 5 can be used. Thus the rod type object (401) fixed to the wiper arm can be used to isolate or break the contact or touch of the rubber strip of the wiper blade with the windshield glass. In this case the rod type object (401) can be linearly moved for momentarily and / or temporarily and/ or as per predefined schedule and / or daily and / or using the wiper speed control switch and / or whenever necessary. In this case also the method of the contact break is applied when the wiper arm assembly is in rest position. Movement of the wiper blade assembly on the surface of the windshield glass and the isolation or contact break of the rubber strip of wiper blade with the surface of the windshield glass cannot be achieved simultaneously or parallel.
The rod type object (401) permanently fixed either to the windshield glass or to the wiper arm and its operation described in this invention can be of any shape. Typically, shape of the rod is like a long stick and /or cylindrical and/or short piece. The rod type object (401) described in this invention can be replaced by object of any shape like rectangular or cube or spherical or circular sheet or triangle or any thin / thick object etc. The object (401) can be placed horizontal also to move the wiper arm assembly as desired. The movement should be in linear direction i.e. in forward direction and reverse or backward direction, for the purpose of breaking the touch or contact of the rubber strip (204) with the windshield glass (300). Further a hook type object can replace the rod type object (401), such that the hook type object should be capable to move the wiper arm assembly away from the windshield glass and towards the windshield glass. Any object performing angular movement and placed between the wiper arm assembly and the windshield glass can push the wiper arm assembly away from the windshield glass. Such an object performing angular movement can perform angular movement in reverse direction to re-establish the contact between the rubber strip (204) of wiper blade and the windshield glass.
Object of any shape, placed between wiper arm assembly and windshield glass, which is moving or rotating, such that with its movement or rotation, the wiper arm assembly will break the contact between rubber strip and windshield glass and is also able to re-establish the contact is suitable for this invention.








Claims
WE CLAIM
1) A rod type linearly movable object (401), placed between the wiper arm assembly and the windshield glass of a car or vehicle, such a rod type object (401) is moved in forward direction and in backward or reverse direction. This rod type object (401) is placed in line with the wiper arm and on the windshield glass. When the rod type object is moved in forward direction, it push the wiper arm in forward direction (away from the windshield glass) , so that the contact or touch between the rubber strip (204) of the wiper blade get broken i.e. the rubber strip is isolated from the surface of the windshield glass, to avoid or prevent the sticking or attaching or adhering or fixing of the rubber strip of wiper blade with the surface of the windshield glass. Further such a rod type object is moved in backward or reverse direction, to re-establish the contact or touch of the rubber strip (204) of the wiper blade with the windshield glass. After re-establishing the touch or contact between the rubber strip and the windshield glass, the wiper blade can be used to remove or shift the rainwater from the windshield glass, by moving or rotating the wiper blade on the surface of the windshield glass. Such a rod type object (401) applies movement to the wiper arm assembly, in forward and backward (reverse) direction, when it is in rest or default position on the windshield glass. Because of the forward and reverse movement of the rod type object, the wiper arm assembly moves away from the windshield glass and towards the windshield glass. The dimensions of the rod type object are chosen in such a way that, when it is pushed in forward direction, it pushes the wiper arm assembly thereby breaking the touch or contact of the rubber strip of wiper blade with the surface of windshield glass (i.e. it does not allow sticking). When the rod type object is moved in backward or reverse direction, it re-establishes touch or contact between the rubber strip of wiper blade and the windshield glass, so that the wiper blade can move freely and without any disturbance on the windshield glass.

2) The rod type object (401) as claimed in claim 1, is capable to move in linear direction i.e. in forward and reverse direction. The direction of movement is controlled by intelligent controller or processor. Such a rod type object can be moved momentarily and / or temporarily and /or periodically and/or as per the pre-determined schedule and / or daily, when the car or vehicle is in ON or OFF state. i.e. the rod type object can be moved in forward and reverse or backward direction when the car is in ON or OFF condition. Such a movement of the rod type object is applied in any atmospheric season like rainy season, summer, winter etc. The systematic and controlled movement of the rod type object (401) is done to avoid or prevent the sticking or adhering or fixing or attaching of the rubber strip (204) of the wiper blade with the surface of the windshield glass.

3) Such a rod type object (401), as claimed in claims 1 and 2, is moved automatically and /or using the wiper speed / rotation control switch. It can be controlled through wiper speed / rotation control switch, with the help of manual intervention i.e. as per the wish of the person or the driver.
4) The rod type object (401) as claimed in claims 1, 2 and 3, which is useful to drop down or remove the leaves of trees or light weight objects or dust particles or snow which is accumulated on the rubber strip of the windshield glass near the contact or touch of the rubber strip and surface of the windshield glass. Such light weight particles which are accumulated on the rubber strip, can be dropped down using wiper speed / rotation control switch by manual intervention in ON or OFF condition of the car or when the car or vehicle is moving. The light weight objects which are accumulated on the rubber strip of wiper blade can be dropped down automatically, by the forward movement of the wiper arm assembly. When the rod type object is pushed in forward direction, the contact between the rubber strip of wiper blade and the surface of windshield glass breaks (i.e isolation), by this method , the light weight objects can be dropped down.

5) The linear movement of the rod type object (401) is achieved by several methods and apparatuses like using the
(5a) assembly of intelligent controller /processor, electric motor, gear, middle
transmission linkages
(5b) by using the action of spring, spring compression and expansion controlling
device, middle linkages , intelligent controller / processor
(5c) by using the electromagnetic techniques and intelligent processors
(5d) by using the manual method like pushing the rod type object in forward and /or
backward or reverse direction.

6) The apparatus and method of isolation presented in claims 1,2 , 3, 4 and 5 which is used to automatically or by manual intervention (using the switch of the wiper speed / rotation control system) to remove or drop down the light weight objects or leaves of trees or dust particles or pieces of ice which are accumulated on the rubber strip of wiper blade near the contact or touch with the windshield glass.

7) The method and apparatus in which the rod type object (401) is fixed or attached permanently to the wiper arm. This rod type object (401), can be moved linearly in forward and backward direction. When it moves in its forward direction (towards the windshield glass) , the wiper arm assembly is picked or pushed or moved away from the windshield glass. When the rod type object (401) is moved in its backward direction (away from the windshield glass) , it re-establishes the contact or touch of the rubber strip of wiper blade with the surface of the windshield glass. Such a rod type object (401) fixed to the wiper arm and is controlled using the methods explained in claim 5. It can work in ON or OFF condition of the car or vehicle. It can be moved momentarily and / or temporarily and /or as per predefined schedule and /or daily and/or by manual intervention using the switch of the wiper speed / rotation control and / or automatically using intelligent controller. Further such an apparatus and a method used to drop down or remove the light weight objects or leaves of the trees or dust particles or pieces of ice which are accumulated on the rubber strip of wiper blade near the contact between the rubber strip and the surface of the windshield glass.

8) The object of any shape, placed between the wiper arm and windshield glass, and on the default or rest position. Such an object moving linearly or with some angular movement and is in touch or contact with either windshield glass or wiper arm assembly or is in touch with both windshield glass and also wiper arm assembly. The linear or angular movement of such an object, providing forward and / or backward movement of the wiper arm assembly. Further the touch / contact break (isolation) can be applied momentarily and / or temporary and /or periodic and / or pre-planned and / or daily in ON and OFF conditions of the car or vehicle. Such an object controlled automatically and /or through the wiper speed / rotation control switch. Such an apparatus and method facilitating drop down of the light weight objects or leaves of tree or dust particles or pieces of snow etc. Such an arrangement preventing the sticking or adhering or fixing or attaching of the rubber strip of wiper blade with the windshield glass.








, Claims:Apparatus and method using the movement of object placed between wiper arm assembly and windshield glass to prevent sticking of rubber strip with the windshield glass of vehicles
Names of the inventers - 1) Mr. Shamkumar Bhimrao Chavan 2) Mrs. (Dr.) Poonam Shamkumar Chavan
Claims
WE CLAIM
1) A rod type linearly movable object (401), placed between the wiper arm assembly and the windshield glass of a car or vehicle, such a rod type object (401) is moved in forward direction and in backward or reverse direction. This rod type object (401) is placed in line with the wiper arm and on the windshield glass. When the rod type object is moved in forward direction, it push the wiper arm in forward direction (away from the windshield glass) , so that the contact or touch between the rubber strip (204) of the wiper blade get broken i.e. the rubber strip is isolated from the surface of the windshield glass, to avoid or prevent the sticking or attaching or adhering or fixing of the rubber strip of wiper blade with the surface of the windshield glass. Further such a rod type object is moved in backward or reverse direction, to re-establish the contact or touch of the rubber strip (204) of the wiper blade with the windshield glass. After re-establishing the touch or contact between the rubber strip and the windshield glass, the wiper blade can be used to remove or shift the rainwater from the windshield glass, by moving or rotating the wiper blade on the surface of the windshield glass. Such a rod type object (401) applies movement to the wiper arm assembly, in forward and backward (reverse) direction, when it is in rest or default position on the windshield glass. Because of the forward and reverse movement of the rod type object, the wiper arm assembly moves away from the windshield glass and towards the windshield glass. The dimensions of the rod type object are chosen in such a way that, when it is pushed in forward direction, it pushes the wiper arm assembly thereby breaking the touch or contact of the rubber strip of wiper blade with the surface of windshield glass (i.e. it does not allow sticking). When the rod type object is moved in backward or reverse direction, it re-establishes touch or contact between the rubber strip of wiper blade and the windshield glass, so that the wiper blade can move freely and without any disturbance on the windshield glass.

2) The rod type object (401) as claimed in claim 1, is capable to move in linear direction i.e. in forward and reverse direction. The direction of movement is controlled by intelligent controller or processor. Such a rod type object can be moved momentarily and / or temporarily and /or periodically and/or as per the pre-determined schedule and / or daily, when the car or vehicle is in ON or OFF state. i.e. the rod type object can be moved in forward and reverse or backward direction when the car is in ON or OFF condition. Such a movement of the rod type object is applied in any atmospheric season like rainy season, summer, winter etc. The systematic and controlled movement of the rod type object (401) is done to avoid or prevent the sticking or adhering or fixing or attaching of the rubber strip (204) of the wiper blade with the surface of the windshield glass.

3) Such a rod type object (401), as claimed in claims 1 and 2, is moved automatically and /or using the wiper speed / rotation control switch. It can be controlled through wiper speed / rotation control switch, with the help of manual intervention i.e. as per the wish of the person or the driver.
4) The rod type object (401) as claimed in claims 1, 2 and 3, which is useful to drop down or remove the leaves of trees or light weight objects or dust particles or snow which is accumulated on the rubber strip of the windshield glass near the contact or touch of the rubber strip and surface of the windshield glass. Such light weight particles which are accumulated on the rubber strip, can be dropped down using wiper speed / rotation control switch by manual intervention in ON or OFF condition of the car or when the car or vehicle is moving. The light weight objects which are accumulated on the rubber strip of wiper blade can be dropped down automatically, by the forward movement of the wiper arm assembly. When the rod type object is pushed in forward direction, the contact between the rubber strip of wiper blade and the surface of windshield glass breaks (i.e isolation), by this method , the light weight objects can be dropped down.

5) The linear movement of the rod type object (401) is achieved by several methods and apparatuses like using the
(5a) assembly of intelligent controller /processor, electric motor, gear, middle
transmission linkages
(5b) by using the action of spring, spring compression and expansion controlling
device, middle linkages , intelligent controller / processor
(5c) by using the electromagnetic techniques and intelligent processors
(5d) by using the manual method like pushing the rod type object in forward and /or
backward or reverse direction.

6) The apparatus and method of isolation presented in claims 1,2 , 3, 4 and 5 which is used to automatically or by manual intervention (using the switch of the wiper speed / rotation control system) to remove or drop down the light weight objects or leaves of trees or dust particles or pieces of ice which are accumulated on the rubber strip of wiper blade near the contact or touch with the windshield glass.

7) The method and apparatus in which the rod type object (401) is fixed or attached permanently to the wiper arm. This rod type object (401), can be moved linearly in forward and backward direction. When it moves in its forward direction (towards the windshield glass) , the wiper arm assembly is picked or pushed or moved away from the windshield glass. When the rod type object (401) is moved in its backward direction (away from the windshield glass) , it re-establishes the contact or touch of the rubber strip of wiper blade with the surface of the windshield glass. Such a rod type object (401) fixed to the wiper arm and is controlled using the methods explained in claim 5. It can work in ON or OFF condition of the car or vehicle. It can be moved momentarily and / or temporarily and /or as per predefined schedule and /or daily and/or by manual intervention using the switch of the wiper speed / rotation control and / or automatically using intelligent controller. Further such an apparatus and a method used to drop down or remove the light weight objects or leaves of the trees or dust particles or pieces of ice which are accumulated on the rubber strip of wiper blade near the contact between the rubber strip and the surface of the windshield glass.

8) The object of any shape, placed between the wiper arm and windshield glass, and on the default or rest position. Such an object moving linearly or with some angular movement and is in touch or contact with either windshield glass or wiper arm assembly or is in touch with both windshield glass and also wiper arm assembly. The linear or angular movement of such an object, providing forward and / or backward movement of the wiper arm assembly. Further the touch / contact break (isolation) can be applied momentarily and / or temporary and /or periodic and / or pre-planned and / or daily in ON and OFF conditions of the car or vehicle. Such an object controlled automatically and /or through the wiper speed / rotation control switch. Such an apparatus and method facilitating drop down of the light weight objects or leaves of tree or dust particles or pieces of snow etc. Such an arrangement preventing the sticking or adhering or fixing or attaching of the rubber strip of wiper blade with the windshield glass.

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