Current overload protected wiper control arrangement

Details Current overload protected wiper control arrangement Current overload protected wiper control arrangement

1997-05-06

1999-02-02

Wysocki, Jonathan

Electricity: motive power systems

Limitation of motor load, current, torque or force

318DIG2, 361 31, H02P 700

Patent

active

058670009

ABSTRACT:
A wiper control system including a current sensing device is used in conjunction with a park position switch to limit the current drawn by windshield wiper motor whenever the system experiences restrictions in a park mode. The arrangement of components is effective for preventing damage to the motor and motor control system caused by excessive current draw whenever the motor stalls, arcs, or experiences excessive loads. However, the current sensing portion of the circuit is essentially disabled when the motor is in its normal operating mode thus preserving the fail safe operation of the wipers.

REFERENCES:
patent: 4123694 (1978-10-01), Andrei-Alexandru et al.
patent: 4544870 (1985-10-01), Kearns et al.
patent: 4866359 (1989-09-01), Schmid et al.
patent: 5252897 (1993-10-01), Poeter et al.
patent: 5264766 (1993-11-01), Tracht et al.
patent: 5691612 (1997-11-01), Corey et al.
patent: 5694011 (1997-12-01), Corey

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