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. 29, 2014
Filed:
Oct. 25, 2011
Peter J. Tavilla, Attleboro, MA (US);
Richard T. Gordon, Middleboro, MA (US);
Adam M. Haag, Saltsburg, PA (US);
Bryan J. Dague, Norton, MA (US);
Peter J. Tavilla, Attleboro, MA (US);
Richard T. Gordon, Middleboro, MA (US);
Adam M. Haag, Saltsburg, PA (US);
Bryan J. Dague, Norton, MA (US);
Sensata Technologies, Inc., Attleboro, MA (US);
Abstract
A pressure responsive electric switch is described having an elongated base containing an electrical switch and terminals. The base is attached to a sensor assembly which actuates and de-actuates the electric switch in response to pressure to be measured. The sensor assembly has a composite actuator member comprising a plurality of stacked snap-acting disc members which includes at least one snap-acting disc member of a chosen low coefficient of thermal expansion and at least one snap-acting disc member of chosen high coefficient of thermal expansion material so as to provide precise pressure activation/deactivation points over a wide temperature range. In a second embodiment, the composite actuator member includes a thermal adjustment member.