Drainage valve actuator mechanism

Details Drainage valve actuator mechanism Drainage valve actuator mechanism

1995-06-19

1996-10-29

Larson, James

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

251294, 68208, F16K 3104

Patent

active

055689116

ABSTRACT:
A clothes washing machine includes a water drain having a motor-actuated valve. The motor drives first and second rotatable members in a common first direction until the second rotatable member reaches a drain-opening position for actuating a drain-opening mechanism to open the drain valve. Simultaneously, an electric switch is operated to temporarily de-energize the motor in order to keep the valve open for a predetermined period. After the motor restarts (i.e., once the draining has been completed) the first and second motors are again rotated in the common first direction until a cam on the second rotatable member engages a fixed cam. The cam on the second rotatable member rides on the fixed cam to disengage the second movable member for rotation relative to the first rotatable member in a second direction to reclose the drain valve.

REFERENCES:
patent: 3484075 (1969-12-01), Weekley
patent: 3955792 (1976-05-01), Cho
patent: 4741508 (1988-05-01), Fukamachi

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