Class 337/315 - Piston or plunger

Subclass of Class 337 - Electricity: electrothermally or thermally actuated switches
Definition: Subject matter wherein the reciprocating member is specifically
No. of patents: 4
Last issue date: 06/21/1983

Number	Title	Issue Date
4389629	Electrical switch with a thermostatic working element as the actuating element, and a switch element in the form of a microswitch An electrical switch with a thermostatic working element as the actuating element and with a switch element designed as a microswitch. In order to achieve optimal utilization of space and small structural size, the contact support of the working contact o...	06/21/1983
4357589	Temperature responsive electrical switch construction, parts therefor and methods of making the same A temperature responsive electrical switch construction having electrical contacts operated by a stem of a piston and cylinder type thermal device carried by the construction, the contacts comprising a plurality of pairs of cooperating contacts arranged t...	11/02/1982
4337621	Power element assembly A power element assembly is disclosed for use in a liquid environment to operate devices such as valves, switches and the like wherein such assembly is provided with an elastomeric diaphragm having an integral sealing neck with internal seal beads that ar...	07/06/1982
4021643	Immersion heater for aquariums A thermostatically controlled safety heater for upright immersion in an aquarium includes a housing with an axially extending, heat-transmitting tube forming a chamber in which an electric heating element is disposed in radially spaced relation from the t...	05/03/1977

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