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:
May. 31, 1977
Filed:
Dec. 18, 1975
John Doherty, Jr, Assonet, MA (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An improved, dual function, thermal valve assembly has three ports and two passages connecting these three ports to a common chamber. The assembly employs two thermally responsive actuating members which are actuable to move a valve plug in the chamber at different temperatures to provide a first temperature region wherein the plug seals port one so that only ports two and three are in communication, a second temperature region wherein the plug does not seal any of the ports so that ports one, two, and three are in mutual communication, and a third temperature region wherein the plug seals port three so that only ports one and two are in communication.