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. 02, 1985
Filed:
Jul. 22, 1983
Keisou Takeda, Toyota, JP;
Toshiyuki Hirata, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A first heat exchanger for heating the wall of an engine intake passage by engine coolant is connected in series with a parallel connection of a second heat exchanger for heating the interior of a passenger compartment and a bypass conduit via a changeover valve which directs flow of coolant alternatively either through the first heat exchanger and the bypass conduit in series and not through the second heat exchanger for summer use, or through the first heat exchanger and the second heat exchanger in series and not through the bypass conduit for winter use. The bypass conduit system has a higher coolant flow resistance than the second heat exchanger, so that the amount of heating applied to the wall of the engine intake passage is automatically reduced when the heating of the passenger compartment is switched off for summer use as compared in winter use where the heating of the passenger compartment is switched on.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile