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. 22, 1985
Filed:
Mar. 26, 1984
Joseph P Wagner, Knoxville, TN (US);
Boyd P Sliger, Concord, TN (US);
Robertshaw Controls Company, Richmond, VA (US);
Abstract
A single valve vehicle-type thermostat construction and method of making the same are provided, the thermostat construction comprising a temperature responsive device having a piston member and a cylinder member that are adapted to provide relative movement therebetween when the device senses certain temperatures, a single valve seat unit being operatively interconnected to one of the members, a single valve closure unit being operatively interconnected to the other of the members and being adapted to control fluid flow through the valve seat in relation to the position of the valve closure unit relative to the valve seat unit as determined by the temperature being sensed by the device, a first spring operatively interconnected to one of the members and to one of the units to always tend to hold the units against each other in a closed condition so as to prevent any fluid flow through the valve seat unit and, thus, through the thermostat construction, and a second spring operatively interconnected to the members to continuously urge the members together with a loading force even when the units are against each other in the closed condition thereof.