Frederick J Perry

US Patent:

40152294, Mar 29, 1977

Filed:

Jan 10, 1975

Appl. No.:

5/535634

Inventors:

Ronald E. Senor - North Attleboro MA
Frederick G. Perry - Norton MA

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H01H 6102

US Classification:

337107

Abstract:

A thermostatic switch of low profile comprises a can with a stationary contact attached to the bottom of the can. A movable contact affixed to the end of a snap-acting bimetal member is positioned to make or break contact with the stationary contact. A flat heater has one end secured to a dimpled portion of a can lid and has its other end resting against the lid in insulated relation to the lid to extend generally parallel to the lid. This other end of the heater is also welded to the bimetallic member. The can and lids incorporate terminals. A gasket insulates the lid from the can and is positioned to a positive stop to a lead when inserting the lead into the lid terminal.

US Patent:

39449602, Mar 16, 1976

Filed:

Nov 29, 1974

Appl. No.:

5/527979

Inventors:

Richard T. Audette - Attleboro MA
Frederick G. Perry - Norton MA

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H01H 3776

US Classification:

337408

Abstract:

A nonresettable thermally actuated switch comprising a case of electrically conductive material, a first power lead connected to the case, a second power lead electrically insulated from the case, a deformable connector of conductive material in electrical contact with an inside surface of the case and with the second lead thereby to complete a circuit. The switch further includes an insulator biased toward the connector by a spring but separated therefrom by a body of fusible material. When heated above a predetermined temperature the fusible material melts and the insulating member moves against the connector mechanically deforming the connector away from the inside surface of the case and electrically insulating the connector from the case thereby to break the circuit.