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:
Jul. 01, 1980
Filed:
Jun. 20, 1978
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Abstract
A warm air intake system for an internal combustion engine having a change-over valve which selectively connects an air intake passage of the engine to a cold air source or to a warm air source, diaphragm means supplied with intake manifold vacuum by a vacuum passage so as to change-over the change-over valve in accordance with supply or relief of vacuum to its diaphragm chamber, and a snap action thermostat control valve which involves a temperature hysteresis between its on and off operations and which selectively opens a middle portion of the vacuum passage to the atmosphere in accordance with the temperature of the air flowing through the air intake passage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile