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:
Feb. 15, 1983
Filed:
Jun. 26, 1981
Donald L Williams, Port Clinton, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An engine cooling-passenger heating system is disclosed having an integrated multi-mode valve arrangement which operates in a no-heat mode to bypass all available flow to the passenger heater past the heater for continued circulation without disruption in the engine cooling system and further operates in a heat mode to effect flow through the heater while also being responsive to the pressure drop across the heater above a predetermined value to also simultaneously establish in the heat mode a restricted connection bypassing a portion of the available coolant to the heater to thereby limit the flow through the heater as well as the pressure differential acting thereon.