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. 20, 1991
Filed:
Feb. 22, 1990
Applicant:
Inventor:
Anthony C Back, Slough, GB;
Assignee:
John Crane UK Limited, , GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277 48 ; 277 50 ; 277 53 ; 277136 ; 277152 ; 2771 / ;
Abstract
A seal includes a seal assembly associated with a housing, said seal assembly having an annular sealing element which is located both axially and radially between a retaining ring and a support ring, the sealing element sealingly engaging the retaining ring and having a first lip formation which is engageable, in response to fluid pressure being applied thereto, with a shaft to provide a fluid tight seal therewith, a seal being provided between the retaining ring and housing.