Bimetal actuated locking device

An interlock device for the door of an appliance, such as a washing machine, to prevent operator access to the spin dryer drum while it is driven or coasting. The device comprises a switch and a bimetal element for being connected in a series circuit including a timer operated switch and the drum dr...

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Bibliographic Details
Main Author SCHANTZ; SPENCER C
Format Patent
LanguageEnglish
Published 01.09.1981
Subjects
ACCESSORIES THEREFOR
FIXED CONSTRUCTIONS
FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
HANDCUFFS
KEYS
LAUNDERING
LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILEARTICLES
LOCKS
SAFES
TEXTILES
TREATMENT OF TEXTILES OR THE LIKE
WINDOW OR DOOR FITTINGS
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Summary:An interlock device for the door of an appliance, such as a washing machine, to prevent operator access to the spin dryer drum while it is driven or coasting. The device comprises a switch and a bimetal element for being connected in a series circuit including a timer operated switch and the drum drive motor. A slotted latch member projecting from the door closes the switch when the door is closed and the motor becomes energized if the timer switch is closed. The bimetal is heated by motor current and causes a latch lever to engage and maintain engagement with the latch member until expiration of a delay period which exceeds the time required for the motor to coast to a stop.
Bibliography:Application Number: US19790064928