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:
Oct. 03, 1978
Filed:
Sep. 17, 1976
Applicant:
Inventor:
John Doherty, Jr, Assonet, MA (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D / ;
U.S. Cl.
CPC ...
236 / ; 13762518 ; 236 87 ; 2361 / ; 236 / ;
Abstract
An improved multi-function, thermal valve assembly has four ports with two passages sealingly separated one from another; the first passage connecting the first two ports and the second passage connecting the second two ports. Each of the passages has a valve seat contained therein. The valve assembly employs at least one thermally responsive actuating member which is actuable to move a valve switching means in each of the two passages simultaneously to either open or close one or both of the valve seats contained in the two passages thereby changing communication between the first two ports and between the second two ports.