Packingless bellows seal

Details Packingless bellows seal Packingless bellows seal

1977-11-03

1978-11-21

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 12, 277 33, 277200, 239 15, 239526, 239583, 251335B, B05B 712, F16J 1556

Patent

active

041263219

ABSTRACT:
Disclosed is a static seal suitable for sealing a pull rod or the like to an opening through which the rod passes into a hydraulic conduit. This static seal can be used in a wide variety of apparatus including for example spray coating guns, both electrostatic and non-electrostatic, valve assemblies and the like. Novel static sealing arrangements at each end of a non-machined extruded bellows provide packingless bellows sealing between the rod and the opening. Such a sealing arrangement is compatible with the highly desirable materials of the fluorinated hydrocarbon group, commonly known by the trade name Teflon.

REFERENCES:
patent: 2236014 (1941-03-01), Smith
patent: 2583659 (1952-01-01), Martin
patent: 2743738 (1956-05-01), Johnson
patent: 2969926 (1961-01-01), Peeps
patent: 3427034 (1969-02-01), Lowe
patent: 3528087 (1970-09-01), Perkins
patent: 3727406 (1973-04-01), Le Feuvre
patent: 3741520 (1973-06-01), Richmond
patent: 3780953 (1973-12-01), Malec

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