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:
Sep. 01, 1992
Filed:
Apr. 14, 1989
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 ...
277 961 ; 277 27 ; 277 / ;
Abstract
A bi-directional seal for sealing, from the ambient, a pressurized fluid in the interior of a housing fitted with a rotatable shaft. The seal is a non-contact seal which balances hydrostatic and hydrodynamic forces to form a predetermined proper gap between the annular sealing faces of the rotor and the stator. The hydrodynamic forces are primarily a result of the size and configuration of the radial grooves formed in the sealing faces of either the rotor or the stator.