Title: Rotary labyrinth seal member

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.

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Inventors: Zelahy, John W. (West Chester, OH, US)
Fairbanks, Norman P. (Cincinnati, OH, US)
Maegly, Robert E. (Cincinnati, OH, US)

Application Number: 862783
Filing Date: 1977-12-21
Publication_date: 1979-04-10
Assignee: General Electric Company (Cincinnati, OH)
Primary Class(es): 277/415 75/244, 277/940, 415/174.4, 415/174.5, 415/230, 428/559
Other Classes:
US Patent Ref:

2839413	Jun, 1958	Taylor	75/244.
3068016	Dec, 1962	Dega	75/244.
3339933	Sep, 1967	Foster	277/53.
3421862	Jan, 1969	Shyne et al.	75/244.
3481715	Dec, 1969	Whalen et al.	277/235.
3537713	Nov, 1970	Matthews et al.	277/55.
3846899	Nov, 1974	Gross	277/53.
3964877	Jun, 1976	Bessen et al.	415/174.
3975165	Aug, 1976	Elbert et al.	415/174.

Other Refs: 2344666236207

Mar, 1974	DE
Apr, 1926	GB

Primary Examiner: Ward, Jr., Robert S.
Assistant Examiner:
Attorney: Sachs; Lee H., Lawrence; Derek P.