Class 337/369 - Cyclically or repetitively operative

Subclass of Class 337 - Electricity: electrothermally or thermally actuated switches
Definition: Subject matter including significant details, specifically
No. of patents: 4
Last issue date: 04/12/2005

Number	Title	Issue Date
6879090	Acoustic transducer with prestressed ring The invention relates to acoustic transducers which comprise a ceramic ring formed from a pre-stressed set of segments. It consists in using, as screws for tightening pre-stressing wedges, screws with hexagonal heads and in placing on the inner face of these ...	04/12/2005
5877670	Heat motor operated load regulating switch assembly and knob attachment therefor A user adjustable switching controller for duty cycle regulating flow of current to an electrical load such as a resistance heater, particularly for cooking appliances. A load current switch, when closed by a user operated cam also energizes a heat motor ...	03/02/1999
4517542	Voltage and temperature compensated time delay relay A temperature and voltage compensated time delay relay includes first and second bimetallic, contact carrying elements chosen to deflect in a similar manner in accordance with variations in ambient temperature for maintaining the contact gap therebetween ...	05/14/1985
4330773	Coil form with heat switch A coil form for accommodating at least one coil winding and a heat switch. The coil form includes a recess for receiving the heat switch and the heat switch includes at least one switching element and a housing, at least a portion of which is adapted to b...	05/18/1982

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