Wiper driving apparatus

Details Wiper driving apparatus Wiper driving apparatus

1989-09-12

1991-11-26

Scott, J. R.

Electricity: circuit makers and breakers

Periodic

Contact breaker detail

H01H 1900, B60S 100

Patent

active

050685007

ABSTRACT:
The wiper driving apparatus includes a driving gear driven by an electric motor for driving a wiper, a clutch member rotatable together with the driving gear in a predetermined driving direction of the driving gear, first and second electrically-conductive plates and first and second moving-contact segments which are rotated relative to the first and second electrically-conductive plates respectively while brought into a slidable contact therewith, respectively, to constitute a switch for opening and closing an electric circuit of the motor. A driven engaging projection of the clutch member extends towards the driving gear, and is disposed in a position differing in phase from a contact position by an angle of at least 90 degrees, preferaly by an angle of 180 degrees, in which contact position a contact point of the second moving-contact segment is brought into electrical contact with the second electrically-conductive plate.

REFERENCES:
patent: 4559484 (1985-12-01), Hirano
patent: 4607198 (1986-08-01), Tsunoda
patent: 4700026 (1987-10-01), Kamiyama et al.
patent: 4795867 (1989-01-01), Ohi et al.

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