Making ice in a refrigerator

Details Making ice in a refrigerator Making ice in a refrigerator

1989-02-28

1990-04-03

Tapolcai, William E.

Refrigeration

Time or program actuator

Congelation product maker

200 38CA, F25C 104

Patent

active

049129392

ABSTRACT:
An icemaker for a refrigerator having a motorized cam actuated switch for controlling the water fill valve and motor hold switch. The cam tracks for each switch has an undercut radial step. The switches each have a lower contact blade and upper contact blade with an intermediate blade of longer length. A spacer attached to the upper or lower contact blade maintains a predetermined minimum spacing therebetween. The lower contact blade drops first over the step allowing the upper blade to close against the intermediate blade energizing the water valve and opening the lower contact set. The intermediate blade then drops over the step, closing the lower contact blade set and the spacer holds the upper contact set open for deenergizing the water valve. A similar fast action switch is employed as a motor hold switch during periods when the ice sensing thermostat is open.

REFERENCES:
patent: 2994206 (1961-08-01), Shaw et al.
patent: 3541806 (1970-11-01), Jacobs
patent: 3752944 (1973-08-01), Cartier et al.
patent: 3779032 (1973-12-01), Nichols
patent: 4297545 (1981-10-01), Darner
patent: 4697432 (1987-10-01), Cole
patent: 4734548 (1988-03-01), Cole

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