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:
Jun. 30, 1981
Filed:
Aug. 14, 1979
Applicant:
Inventor:
David J Boes, Monroeville, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; F16J / ;
U.S. Cl.
CPC ...
277 961 ; 277 962 ; 277134 ; 277135 ;
Abstract
A face type shaft seal for liquid metal pumps comprises a non-contacting seal in which at least one seal face has spiral grooves therein. The seal faces are gold plated and designed so that the liquid metal wets the seal faces and creates a thin layer of liquid metal between the two seal faces during both rotation of the pump shaft and non-rotation of the pump shaft. The thin layer of liquid metal prevents contact of the two seal faces during initial rotation of the pump shaft.