Sealing ring with two rows of projections and for a rotary shaft

Details Sealing ring with two rows of projections and for a rotary shaft Sealing ring with two rows of projections and for a rotary shaft

1987-01-20

1988-11-08

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277153, F16J 1532

Patent

active

047830867

ABSTRACT:
An improved seal for a rotary shaft which exerts a pumping effect on a lubricant on its shaft. The seal comprises a substantially rigid annular supporting member and a generally annular elastic sealing member affixed coaxially to the supporting member and extending radially inwardly of the supporting member. The radially inner surface of the said sealing member defines a sealing contact surface adapted to sealingly contact the shaft. The improvement includes a first circumferentially extending portion on the sealing contact surface and a plurality of projecting portions extending axially from one side of the first portion and being circumferentially spaced apart, the first portion having a substantially constant axial width throughout its circumferences. The first portion also extends at an acute angle with respect to the axis of the rotary shaft, the projections having circumferentially extending edges spaced from the one side of the first portion and joined to second and third edges which extend to the one side of the first portion at acute angles thereto.

REFERENCES:
patent: 3586342 (1971-06-01), Staab
patent: 3785660 (1974-01-01), Bush
patent: 3790180 (1974-02-01), Heyn et al.
patent: 3807743 (1974-04-01), Burke
patent: 3868105 (1975-02-01), Bentley
patent: 3895814 (1975-07-01), Kupfert et al.
patent: 3921987 (1975-11-01), Johnston et al.
patent: 4084826 (1978-04-01), Vossieck et al.
patent: 4183543 (1980-01-01), Antonini
patent: 4441722 (1984-04-01), Pichler

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