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:
Mar. 19, 1985
Filed:
Apr. 08, 1983
Paul Heimnick, Owosso, MI (US);
Schmelzer Corporation, Flint, MI (US);
Abstract
A control device for use in an air induction system of an internal combustion engine having a spark ignition system for maintaining a vacuum operated device actuated once the engine has started independently of fluctuations in vacuum pressure in which the device has a housing with chambers communicating with a source of vacuum and with the device to be operated and in which fluid communication between the chambers is regulated by a first valve operated in response to energization and de-energization of the ignition system and a second valve which permits fluid flow from the device to be actuated through the source of vacuum pressure but prevents fluid flow in the opposite direction.