Bimetal actuated lock

Details Bimetal actuated lock Bimetal actuated lock

1986-08-25

1988-01-12

Moore, Richard E.

Closure fasteners

Bolts

Swinging

292DIG66, 292DIG69, 2923363, E05B 1722

Patent

active

047187050

ABSTRACT:
A door locking device for an appliance such as a washing machine has a rotatable lock lever actuated to engage a latch carried by the door to hold the door in a closed position. The lock lever is actuated by a bimetallic element which is adapted to be connected in series with the drive motor when the washing machine is in the spin condition so that the electric current passing through the drive motor passes through the bimetallic element and the resulting heating and deflection of the bimetallic element actuates the lock lever. The unit also carries an interlock switch actuated by the latch mechanism to prevent operation when the door is open. A shunt switch is provided to close electrical contacts when the bimetallic element and lock lever are deflected to the locked position to shunt current past the bimetallic member to prevent further heating and to insure a substantially constant unlock time.

REFERENCES:
patent: 4074545 (1978-02-01), Case
patent: 4179907 (1979-12-01), Schantz
patent: 4286811 (1981-09-01), Schantz

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