Shaft seal in the shape of an elliptical funnel

Details Shaft seal in the shape of an elliptical funnel Shaft seal in the shape of an elliptical funnel

1984-12-21

1985-10-01

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 95, 277DIG8, F16J 1532, F16J 1536

Patent

active

045441642

ABSTRACT:
A seal for a shaft rotatably mounted in a housing. The seal is fabricated of a resilient material and includes a generally hollow elliptical attachment and an annular lip-shaped element which extends outwardly at an angle from a top side of the attachment. The lip-shaped element has a terminal free end which rests against the housing in a plane perpendicular to the shaft axis. When the seal is slidably positioned on the shaft the elliptical attachment deforms into a cylindrical shape in sealing relation with the shaft. This deformation causes the lip-shaped element to assume an elliptical configuration. Rotation of the shaft relative to the housing causes the free end of the lip-shaped element to move back and forth in a radial direction affecting removal of dirt particles from the housing.

REFERENCES:
patent: 3504917 (1970-04-01), Malmstrom
patent: 3703296 (1972-11-01), Malmstrom

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