Shaft seal

Details Shaft seal Shaft seal

1983-09-21

1985-06-04

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 16, F16J 1534

Patent

active

045210268

ABSTRACT:
A packingless shaft seal between an apparatus housing and a rotatable shaft. The shaft seal includes a sleeve mounted on the shaft and a seal housing mounted on the apparatus housing and around the sleeve. The sleeve has a variable pitch thread extending from its ends within the apparatus housing to the seal housing and a cylindrical portion within and spaced from the inner surface of the seal housing. The variable pitch thread is directed toward the interior of the apparatus housing so that upon rotation of the shaft, material entering the thread is moved back into the apparatus housing. The seal housing has a chamber therein through which a temperature control material flows to control the temperature of the material passing between the seal housing and the sleeve.

REFERENCES:
patent: 450004 (1891-04-01), Daley
patent: 2182981 (1939-12-01), Drost et al.
patent: 2383531 (1945-08-01), Caruthers
patent: 2713927 (1955-07-01), Rabinow
patent: 2818284 (1957-12-01), Stevens
patent: 2865615 (1958-12-01), Slaughter
patent: 3004782 (1961-10-01), Meermans
patent: 3071384 (1963-01-01), Friberg
patent: 3700247 (1972-10-01), Butler et al.

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