The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 1986
Filed:
Jul. 20, 1984
Carlton E Sanford, East Providence, RI (US);
Paul A Lesser, N. Attleboro, MA (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A thermal or pressure responsive switch has a base mounting a set of electrical contacts. A metallic snap acting disc support, placed on the base is provided with a bore which receives a pin to transfer motion from a disc mounted on the support to the set of electrical contacts upon snapping of the disc. A first embodiment has a pressure converter received on the disc support. The peripheral edge of the snap acting disc is received on a seat formed in the converter with an annular reaction ridge formed on the support. A second embodiment has a pressure converter with the peripheral edge of the snap acting disc received on a seat formed in the disc support and an annular force ridge on the converter is adapted to contact the upper surface of the disc. In either embodiment a layer of low friction plastic can be placed on both faces of the disc. A third embodiment has a flat metallic disc support with a recessed portion for receiving the disc and a continuous stop surface. In all embodiments a cup shaped shell has a gasket received in a channel formed in a top end wall of the shell with the outer wall portion of the shell crimped over to compress the gasket and provide a gas tight seal. The top end wall of the shell can be formed with a portion displaced from the wall to serve as an automatic valve deflator which can be used with any of the embodiments.