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:
Jan. 11, 1977
Filed:
Feb. 06, 1975
Michael A Kestner, Richmond, IN (US);
Dana Corporation, Toledo, OH (US);
Abstract
A vacuum operated valve and vacuum delay device is disclosed. The device, which may be connected to a variable vacuum source and employed to serve a vacuum operated switch or valve, includes a bleed orifice for restricting the passage of air therethrough and delaying the effect of vacuum on the switch or valve being served. A spring-loaded diaphragm within the device, operable by the variable vacuum source, is adapted to dissipate vacuum to the valve or switch being served by venting it to atmospheric pressure when the vacuum source reaches a predetermined high level. The vacuum delay and shutoff valve is particularly suitable for serving an exhaust gas recirculation valve of an automobile.