Motor reversing circuit for vehicle windshield wiper

Details Motor reversing circuit for vehicle windshield wiper Motor reversing circuit for vehicle windshield wiper

1981-12-02

1982-10-19

Weldon, Ulysses

Electricity: motive power systems

Periodic, repetitious or successive operations control of...

318444, 318466, 318467, H02P 104

Patent

active

043552706

ABSTRACT:
A motor reversing control circuit for a motor vehicle windshield wiper has a motor driven cam with a first lobe defining a park position for the wiper and a second lobe defining, in relation to the first, a wipe angle. A park switch is actuated by either lobe to reverse the output of a flip-flop which controls motor direction. The motor is activated in response to one or more of (a) a main switch, (b) the unactuated park switch and (c) the flip-flop output signalling wiper movement toward the park position. An optional timer effective to delay the motor activation in response to the main switch provides a pause in the park position.

REFERENCES:
patent: 3617837 (1971-11-01), Beck
patent: 3689817 (1972-09-01), Elliot
patent: 3927436 (1975-12-01), Inoue et al.
patent: 4138630 (1979-02-01), Graham
patent: 4158798 (1979-06-01), Holt
patent: 4223256 (1980-09-01), Espenschied
patent: 4259624 (1981-03-01), Seibicke
patent: 4271381 (1981-06-01), Munz et al.

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