Wiper assembly

Details Wiper assembly Wiper assembly

1997-02-06

1999-02-09

Graham, Gary K.

Brushing, scrubbing, and general cleaning

Attachments

Optical-member-attachable cleaner

15250351, 15250203, B60S 132, B60S 144

Patent

active

058678581

ABSTRACT:
Various embodiments of a wiper assembly are disclosed which facilitate the removal or shattering of ice or snow debris lodged and trapped beneath a wiper blade during its movement. Embodiments of the invention are disclosed which provide means to overcome normal urging forces of the wiper arm in a direction toward a light transmitting screen member and to urge the wiper arm of the wiper assembly away from the surface of the screen member. Some structures according to the invention may cause the wiper blade to return with an impact force sufficient ice and snow debris trapped beneath the wiper blade and also possibly frozen to it. Other embodiments include means for imparting vibrational movement to the wiper assembly to release or shatter ice and snow trapped beneath the blade or frozen to it.

REFERENCES:
patent: 2717408 (1955-09-01), Le Page
patent: 2784438 (1957-03-01), Petersen
patent: 2979750 (1961-04-01), Anderson
patent: 5070571 (1991-12-01), Arai
patent: 5129123 (1992-07-01), Shirato
patent: 5469595 (1995-11-01), Dara
patent: 5487204 (1996-01-01), Nelson
patent: 5551116 (1996-09-01), DeKelaita
patent: 5571221 (1996-11-01), Kuo et al.
patent: 5636407 (1997-06-01), Len

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