Radial shaft seal ring with backfeed ribs and damming ribs

Details Radial shaft seal ring with backfeed ribs and damming ribs Radial shaft seal ring with backfeed ribs and damming ribs

1985-11-07

1987-09-22

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277152, 277208, F16J 1532

Patent

active

046950630

ABSTRACT:
A seal ring has an annular sealing lip of a polymeric material which bears resiliently about a shaft rotatable relative thereto with a sealing strip and hydrodynamically acting backfeed ribs to one side of the sealing strip. An annular projection projects from the other side of the sealing strip with a radial clearance between a cylindrical or conical interior surface of the annular projection and the shaft. The annular projection is united with the sealing strip in a bending-resistant manner. Damming ribs protrude uniformally about the interior surface of the annular projection. Each damming rib has a leading surface which makes an obtuse angle with the interior surface and is parallel to the axis thereof.

REFERENCES:
patent: 2446380 (1948-08-01), Meyers et al.
patent: 3482845 (1969-12-01), Bertrandi et al.
patent: 3729204 (1973-04-01), Augustin
patent: 3913925 (1975-10-01), Gyory
patent: 4427205 (1984-01-01), Holzer et al.

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