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:
Aug. 09, 1983
Filed:
Oct. 25, 1977
Jerry G Jelinek, La Habra, CA (US);
Parker-Hannifin Corporation, Cleveland, OH (US);
Abstract
A sealing sleeve for a rotary type valve is disclosed. The sealing sleeve is formed into a generally circular configuration and is disposed between the housing and the rotor of the valve to provide a firm seal therebetween. Apertures are provided in the periphery of the sleeve and are positioned therein to align with the rotor bores. The inner surface of the sleeve has a thin layer of elastomeric material chemically bonded thereto which terminates in a bead-like configuration about each aperture and on the interior thereof. This bead-like configuration provides a firm seal between the rotor bore and the housing ports eliminating the necessity of O-rings therebetween.