Grease seal for a power screw system

Details Grease seal for a power screw system Grease seal for a power screw system

1987-12-07

1989-01-03

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277167, 277203, 744248R, F16J 1516, F16H 5522

Patent

active

047951729

ABSTRACT:
A distortable diaphragm seal, which is preferably formed of felt, seals each end of a nut through which a screw extends. Grease, which is introduced into the interior of the nut to function as a lubricant, is sealed therein by the seal. The seal has an opening of substantially the cross sectional shape of the screw normal to the axial centerline of the screw to permit part of the seal to extend circumferentially along the unthreaded O.D., and to permit another portion of the diaphragm seal to run into, and out of, a helical groove in the ball screw, thus forming a continuous seal on the screw surface.

REFERENCES:
patent: 3258983 (1966-07-01), Valenti
patent: 3851541 (1974-12-01), Ploss et al.
patent: 4211125 (1980-07-01), Benton
patent: 4286793 (1981-09-01), Ploss et al.
patent: 4557156 (1985-12-01), Teramachi
patent: 4604911 (1986-08-01), Teramachi
patent: 4612817 (1986-09-01), Neff
patent: 4677869 (1987-07-01), Mayfield
Design Engineering Guide No. 1 Available from American Felt & Filter Co., Fiberstruct Engineering Group, 18, p. 1987.

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