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. 24, 1985
Filed:
Aug. 09, 1984
Applicant:
Inventor:
William M Riley, Jr, Gurnee, IL (US);
Assignee:
Chicago Rawhide Mfg. Co., Elgin, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277134 ; 277152 ; 277153 ;
Abstract
A fluid seal unit for high pressure sealing applications. The seal has a rigid casing and an annular elastomeric sealing lip body which includes a primary seal band contacting a shaft in sealing engagement when the fluid in the sealed region is under a first pressure. The air side surface of the lip body also has auxiliary sealing ribs and fluid retaining grooves of progressively increasing diameter. When the pressure in the sealed region increases, one or more additional ribs will contact the shaft to provide increased seal band contact area and to entrap additional fluid near the shaft.