Lateral travel windshield wiper with speed multiplication
OwnerLee Austininventor
Life of this patent
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Abstract
An elongated track receives and supports a movable wiper arm carriage having a windshield wiper extending therefrom. A plurality of pulleys couple the wiper arm carriage to an oscillatory drive mechanism having a reciprocating carriage. The pulley and cable system provides a distance multiplication in which the wiper arm carriage moves a substantially greater distance in response to motion of the oscillatory system carriage. A single direction drive motor is coupled to the oscillatory drive which includes a rotating arm together with a pivotally supported connecting arm and slider coupled to a guide bar supported upon and coupled to the oscillatory system carriage.
Claims8
For use in a vehicle having a vehicle window, a lateral travel wiper comprising:
- a wiper arm carriage;
- slide means for slidably supporting said wider arm carriage for movement in proximity to said vehicle window;
- a wiper supported upon said wiper arm carriage;
- a movable drive carriage;
- support means for movably supporting said drive carriage;
- an oscillatory drive coupled to said drive carriage for moving said drive carriage in a reciprocating motion upon said support means;
- a single direction drive motor coupled to said oscillatory drive;
- a plurality of rotatable pulleys including a first pair of pulleys supported proximate said slide means, and a second pair of pulleys supported proximate said support means, and a third pair of pulleys supported said drive carriage;
- and
- an endless cable coupled to said drive carriage and said wiper arm carriage, said cable passing over said first, second and third pairs of pulleys to form a distance multiplying pulley and cable combination in which said wiper arm carriage is moved a greater distance than said drive carriage moves in response to said oscillatory drive reciprocating said drive carriage.
Dependencies are inferred from the claim text.