Lip type seal

Details Lip type seal Lip type seal

2011-05-17

2011-05-17

Patel, Vishal (Department: 3676)

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

C277S572000, C277S577000

Reexamination Certificate

active

07942424

ABSTRACT:
For easier separation and sorting by material of constructing parts and better assembly retainability among the constructing parts and installing workability, a lip type seal has a elastic material-made first lip seal member (11) including a cylinder portion (12) fitted into a shaft hole (72) and a first seal lip (14) arranged at a sealed fluid side (A) and contacted with a shaft (73), a resin-made second lip seal member (21) including a second seal lip (23) arranged at an atmospheric air side (B) and contacted with the shaft (73), a metal-made spacer ring (31) arranged at the sealed fluid side (A) of the second lip seal member (21), and a metal-made retaining ring (41) retaining the spacer ring (31) and the second lip seal member (21), and these parts are assembled without bonding, so that the retaining ring (41) is fitted to the first lip seal member (11).

REFERENCES:
patent: 2966376 (1960-12-01), Reynolds
patent: 3362719 (1968-01-01), McCormick
patent: 3682488 (1972-08-01), Matsushima
patent: 4283063 (1981-08-01), Prescott
patent: 6565096 (2003-05-01), Ikeda et al.
patent: 6840521 (2005-01-01), Ikeda
patent: 6886834 (2005-05-01), Osako et al.
patent: 7055824 (2006-06-01), Kobayashi et al.
patent: 10-318377 (1998-12-01), None
patent: WO 2004/076894 (2004-09-01), None

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