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:
Jul. 28, 1992
Filed:
Oct. 31, 1990
Applicant:
Inventor:
Abraham Lipschitz, Warwick, RI (US);
Assignee:
EG&G Sealol, Inc., Providence, RI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277 74 ; 277 / ; 277 961 ;
Abstract
A drained seal for sealing, from the ambient, a pressurized fluid in the interior of a housing fitted with a rotatable shaft and for eliminating fluid leakage along the shaft. The seal is a drained face seal that minimizes or eliminates leakage from between the sealing faces and onto the shaft. The seal includes a drain cavity formed in the stator, a drain port formed in the seal cup, a sealing dam adjacent to the drain cavity, and a tapered rotor which cooperate to prevent fluid leakage.