Bi-directional rotary shaft seal

Details Bi-directional rotary shaft seal Bi-directional rotary shaft seal

1974-03-13

1976-01-27

Rothberg, Samuel B.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

F16j 1532

Patent

active

039348881

ABSTRACT:
An oil seal having an annular sealing surface and having, on one tapered side of the sealing surface, circumferential series of oppositely inclined V-shaped ribs which converge toward the sealing surface, the ribs being truncated adjacent the sealing surface to a diameter which is equal to or only slightly greater than the diameter of the sealing surface. The edges of the truncated portions of the ribs, when in contact around a rotating shaft, define with the shaft and with the sealing surface, a series of oppositely disposed wedge shaped spaces which pump oil leaking past the sealing surface back toward the oil side of the sealing surface regardless of the direction of rotation of the shaft.

REFERENCES:
patent: 3497225 (1970-02-01), Workman
patent: 3501155 (1970-03-01), Dega et al.
Research Publication GMR-532 "Application Of Hydrodynamic Principles in Sealing"- L. Weinard (p. 51) Sept. 30, 1965.

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