Lubricated rotary shaft seal

Details Lubricated rotary shaft seal Lubricated rotary shaft seal

1987-11-23

1988-08-23

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 72R, 277 79, 277 93SD, F16J 1538

Patent

active

047656328

ABSTRACT:
A lubricated rotary seal mounted between a shoulder of a rotary shaft and a face plate through which the shaft end extends has a ring-shaped body that fits on the shaft end and partially overlaps the shaft shoulder. A porous bearing washer on the face of the seal spans a circular channel in the body which contains oil-soaked wadding. A cylindrical recess in the seal body fits over the shaft shoulder and houses several compression springs which press the seal with its lubricated bearing washer in contact with the face plate. Debris formed by erosion of the bearing washer can be accumulated in the seal body and periodically removed. Oil can be periodically injected into the wadding.

REFERENCES:
patent: 1544609 (1925-07-01), Somes
patent: 2966859 (1961-01-01), Salter et al.
patent: 3765689 (1973-10-01), Adams

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