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:
Jun. 26, 1979
Filed:
Sep. 03, 1976
Toyota Jidosha Kogyo Kabushiki Kaisha, Aichi, JP;
Abstract
A spark timing control device for use in an internal combustion engine, which includes a pressure control valve wherein when an input vacuum is not higher than a given vacuum level, an output vaccum remains at a zero level, and when the input vacuum is not lower than the given level, the output vacuum will be a product of a proportional constant and the difference between the input vacuum and the aforesaid given vacuum level; a pressure source; and a vacuum advance control mechanism. The pressure source is connected to the input side of the pressure control valve, while the output side of the pressure control valve is connected to the vacuum advance control mechanism. Various modifications of the pressure control valve employable in the spark timing control device are also presented.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile