Wiper apparatus for motor vehicle

Details Wiper apparatus for motor vehicle Wiper apparatus for motor vehicle

1992-10-27

1993-09-14

Ro, Bentsu

Electricity: motive power systems

Periodic, repetitious or successive operations control of...

318 41, 318445, 318484, B60S 108

Patent

active

052452590

ABSTRACT:
A wiper apparatus for wiping the windshield of a vehicle with a plurality of wiper blades operated by a plurality of wiper motors which comprises an intermittent switch, autostop switches disposed to the respective wiper motors, relays for operating the respective wiper motors in response to ON-states of the respective autostop switches, a relay driving circuit for driving the relays, a first timer circuit responsive to OFF-states of both the autostop switches for generating a first timer signal, a second timer circuit responsive to an intermittent signal from the intermittent switch and the ending edge of the first timer signal for generating a second timer signal, a third timer circuit responsive to an ON-state of either autostop switch for generating a third timer signal and holding the relay driving circuit to drive the relays, and a prohibiting circuit for forbidding and permitting the operation of the relay driving circuit according to the first timer signal and the second timer signal, respectively.

REFERENCES:
patent: 4075501 (1978-02-01), Kondo
patent: 4527106 (1985-07-01), Fischer
patent: 4585980 (1986-04-01), Gille et al.
patent: 4689535 (1987-08-01), Tsunoda et al.
patent: 4689536 (1987-08-01), Iyoda
patent: 5182501 (1993-01-01), Henderson et al.

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