Ferrofluid seal for a shaft

Details Ferrofluid seal for a shaft Ferrofluid seal for a shaft

1990-07-05

1992-03-03

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277135, F16J 1540

Patent

active

050926110

ABSTRACT:
A ferrofluid seal for a shaft comprising several sealing gaps concentrically arrayed about a shaft. Each gap is filled with ferrofluid liquid through a bore-hole. Each of the bore-holes is sealed and hydraulically isolated from the other bore-holes.

REFERENCES:
patent: 4671679 (1987-06-01), Heshmot
patent: 4696481 (1987-09-01), Iversen
patent: 4865334 (1989-09-01), Raj et al.

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