Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1996-08-23
1998-05-26
Cummings, Scott
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277192, 4151735, 4151745, F16J 15447
Patent
active
057554455
ABSTRACT:
The present invention provides an annular sealing apparatus for disposition in cooperation with a body defining a bore and a rotating member rotatably received in said bore to inhibit fluid leakage therebetween. The sealing apparatus is comprised of axially juxtaposed first and second comb-like pluralities of uniformly spaced and integral finger members circumscribing the rotating member. Each finger member has substantially the same width and is separated from adjacent finger members by a uniform gap. At the innermost end of each finger is a foot portion sealingly and movably engaging said rotating member. Each foot portion is configured so as to lift away from the rotating member and ride on a thin film of air during engine operation. The first and second comb-like members are positioned so that the fingers of each block the gaps in the other.
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Fuller: "Theory and Practice of Lubrication for Engineers"; pp. 154-155, Jun. 25, 1956.
Booser: "CRC Handbook of Lubrication, vol. II"; pp. 100, 435, and 617, Jul. 26, 1984.
"Basic Lubrication Theory" 2nd Ed. by Alastair Cameron (Ellis Horwood Series in Engineering Science, 1976 Ellis Horwood Ltd.) pp. 56 and 57.
Allied-Signal Inc.
Cummings Scott
Holden Jerry J.
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