Vehicle window wipers with alternating symmetrical overlap

Details Vehicle window wipers with alternating symmetrical overlap Vehicle window wipers with alternating symmetrical overlap

1989-06-26

1990-02-13

Ro, Bentsu

Electricity: motive power systems

Periodic, repetitious or successive operations control of...

318 54, 318102, 318DIG2, B60S 108

Patent

active

049009958

ABSTRACT:
A pair of wiper blades on a vehicle window are oscillated in opposing movement from an overlapping inner wipe arrangement, with upper and lower overlapped blades, outward to separated outer wipe positions and inward to the overlapping inner wipe arrangement with the positions of the blades reversed. Since the upper blade on the way out becomes the lower blade on the way back, it does not need to pause in its outer wipe position and it thus does not need to be subjected to a large acceleration in maintaining fast wipe cycles on large vehicle windshields. This reduces stress on the arm and blade and blade end whip.

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patent: 3721878 (1973-03-01), Gumbert
patent: 4405887 (1983-09-01), Tamura et al.
patent: 4431954 (1984-02-01), Carpenter et al.
patent: 4492904 (1985-01-01), Graham
patent: 4585980 (1986-04-01), Gille et al.
patent: 4665488 (1987-05-01), Graham et al.
patent: 4670695 (1987-06-01), Licata et al.
patent: 4723101 (1988-02-01), Bauer et al.

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