Combination knife-edge and areal contact lip seal for movable el

Details Combination knife-edge and areal contact lip seal for movable el Combination knife-edge and areal contact lip seal for movable el

1981-08-20

1983-12-20

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277178, 277186, 277207R, 277212R, F16J 1506

Patent

active

044213220

ABSTRACT:
A lip seal of elastic material has at least one sealing lip having a knife-edge sealing ridge particularly for sealing an axially moving part of a device from a liquid space, for instance in a galvanic metal-air cell. In order to improve the sealing of the axially moving device part with respect to the liquid space and to lengthen the sealing action, a membrane-like protective lip is formed on the liquid side in front of the sealing ridge, the lip resting with areal contact against the device part which is to be sealed off. The membrane-like protective lip due to its inherent tension or initial tension applies itself with high unit surface pressure against the surface of the device part to be sealed off.

REFERENCES:
patent: 2487669 (1949-11-01), Pattullo et al.
patent: 2558183 (1951-06-01), Kosatka
patent: 2561884 (1951-07-01), Perrow
patent: 2897533 (1959-08-01), Bull et al.
patent: 3379444 (1968-04-01), Brummer et al.
patent: 3430989 (1969-03-01), Wendt
patent: 3480286 (1969-11-01), Kosatka
patent: 4304416 (1981-12-01), Oshima
patent: 4311317 (1982-01-01), Bartels

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