Fluid seal

Details Fluid seal Fluid seal

1977-06-30

1979-11-20

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

F16J 1532

Patent

active

041748450

ABSTRACT:
A fluid seal for use between two relatively rotatable members and including a body section to be secured to one member or its support, and a circular lip projecting from the body for sealing engagement about or around a surface of the other member. The lip is defined by two angularly arranged surfaces which meet at a common edge to form a sealing edge of the lip, and a pumping configuration is provided on one of those surfaces. A feature of the invention is the provision of discontinuities around the lip edge so that relatively small discrete passages provide a communication between the two sides of the lip whereby fluid can be returned through the seal under the influence of the pumping configuration. The discontinuities can be formed by projections on the lip edge which are depressed to create the communication passages through distortion of the lip, or they may be recesses or gaps preformed in the lip edge.

REFERENCES:
patent: 3501155 (1970-03-01), Dega et al.
patent: 3672690 (1972-06-01), Berens
patent: 3801113 (1974-04-01), Jackson

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