Wiper apparatus

Details Wiper apparatus Wiper apparatus

1998-06-26

1999-12-07

Nappi, Robert E.

Electricity: motive power systems

Motor-reversing

318443, 318444, 318DIG2, 318266, H02P 100

Patent

active

059989491

ABSTRACT:
A direct drive type rear wiper in which normal and reverse rotation of a motor causes reciprocating wiping operation of a wiper blade of a vehicle such as an automobile, comprising a motor 1 which rotates in normal and reverse directions, a worm wheel 2 which rotates being interlocked with the motor 1, a relay plate 3 which rotates being interlocked with the worm wheel 2, four contacts S1-S4 provided facing the relay plate 3, and a control circuit 4 for switching direction of electric current for the motor 1. In particular, when the motor 1 is to be stopped at a turning position in reciprocating wiping operation of the wiper blade, electric braking is made to act directly on the motor 1 according to contacting condition between the relay plate 3 and the first and second contacts S1, S2.

REFERENCES:
patent: 3796936 (1974-03-01), Kearns
patent: 4336482 (1982-06-01), Goertler et al.
patent: 4585980 (1986-04-01), Gille et al.
patent: 4670695 (1987-06-01), Licata et al.
patent: 4896084 (1990-01-01), Naue et al.
patent: 5568026 (1996-10-01), Welch
patent: 5684011 (1997-11-01), Corey et al.

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