Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1985-12-02
1986-10-14
Ward, Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277134, E16J 1532
Patent
active
046168362
ABSTRACT:
A seal having an exterior seal casing which includes a mounting surface and a seal lip body bonded to a portion of the casing, with the seal lip body comprising annular surfaces defining the air and oil side portions of a primary lip which meet along a generally cylindrical locus of measurable axial extent to provide a primary seal band with a plurality of spaced apart hydrodynamic pumping elements located on this seal band. An auxiliary lip is defined by a pair of frusto-conical surfaces meeting along a generally circular locus to provide an auxiliary or excluder lip portion. Said primary and secondary lips are spaced apart by an annular region of generally V-shaped cross-section, and the primary lip dimension or the pumping elements serve to maintain the primary lip seal band spaced just apart from an associated shaft, at least in the regions of the elements. Said auxiliary lip is of reduced diameter in relation to said seal band dimension in the relaxed condition of the seal.
REFERENCES:
patent: 3801111 (1974-04-01), Messenger
patent: 4106781 (1978-08-01), Benjamin et al.
patent: 4166628 (1979-09-01), Blaydon
patent: 4174845 (1979-11-01), Hadaway
patent: 4399998 (1983-08-01), Otto
patent: 4425838 (1984-01-01), Pippert
patent: 4426094 (1984-01-01), Antonini
Drygalski Gordon T.
Otto Dennis L.
Ross Donald K.
Bufalino Angelo J.
Chicago Rawhide Mfg. Co.
Fitzgibbon James T.
Ward Robert S.
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