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:
Apr. 10, 1979
Filed:
Dec. 21, 1977
Applicant:
Inventors:
John W Zelahy, West Chester, OH (US);
Norman P Fairbanks, Cincinnati, OH (US);
Robert E Maegly, Cincinnati, OH (US);
Assignee:
General Electric Company, Cincinnati, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01D / ; F01D / ; F16J / ;
U.S. Cl.
CPC ...
277 53 ; 277D / ; 4151 / ; 415174 ; 428559 ; 75244 ;
Abstract
A rotary labyrinth gas seal between a rotating member and a stationary member, one of which includes at least one seal tooth projecting toward a surface of the other member is improved through the provision of an abrasive tip on the projecting tooth. Such abrasive tip comprises an electrodeposited metal matrix which entraps a plurality of abrasive particles protruding from the tip, the thickness of the matrix being less than the longest dimension of the abrasive particles protruding from the tip.