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. 17, 1990
Filed:
Jul. 12, 1988
Applicant:
Inventors:
Roy E Shelinbarger, Jr, Wichita, KS (US);
John T Cherryholmes, Potwin, KS (US);
Assignee:
Aerospace Systems and Components, Inc., Wichita, KS (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277193 ; 277192 ; 277216 ;
Abstract
An improved sealing ring assembly in which a three-piece ring seal is provided with a residue deposit groove void to accumulate contaminants to minimize clogging between ring members. Mounted on a piston in a pneumatic valve assembly which is actuated by pressure routing effected by selective solenoid energization, the sealing ring assembly improves the reliability of piston actuation in high temperature, high contaminant service.