Shaft seal

Details Shaft seal Shaft seal

1977-06-06

1978-12-05

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 59, F16J 1554

Patent

active

041282485

ABSTRACT:
A dynamic packing for sealing a shaft which passes through a wall separating an oil-containing space from an oil-free space or from the outside atmosphere, composed of two shaft sealing rings which engage the shaft and define an oil-filled gap therebetween, and a duct composed of one portion in communication with the oil-containing space and another portion in communication with the gap to place the gap between the sealing rings in communication with the oil-containing space and which is provided with a closure element in the form of a diaphragm having one of its faces in communication with both duct portions, the duct and element being provided to relieve the pressure in the gap.

REFERENCES:
patent: 3268232 (1966-08-01), Richards
patent: 3625523 (1971-12-01), Gardner
patent: 3733145 (1973-05-01), Kaplansky et al.
patent: 3740057 (1973-06-01), Doyle
patent: 3740058 (1973-06-01), Gardner et al.
patent: 3810634 (1974-05-01), Hakanasson
patent: 3871666 (1975-03-01), Franz
patent: 4010960 (1977-03-01), Martin

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