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:
Dec. 20, 1983
Filed:
Feb. 08, 1982
Applicant:
Inventor:
John A Burke, Rocky River, OH (US);
Assignee:
Greene, Tweed & Co., Inc., North Wales, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ; F16L / ; F16J / ;
U.S. Cl.
CPC ...
2771 / ; 277 27 ; 277152 ; 277165 ; 277177 ;
Abstract
A two-stage fluid seal assembly is provided for sealing between relatively moving parts, such as a piston and cylinder. The assembly comprises a hard-sealing, non-resilient material effective at high pressure and a resilient soft-sealing material effective at low pressures.