Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1984-01-09
1985-07-02
Smith, Robert I.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277135, F16J 1540
Patent
active
045263795
ABSTRACT:
A stabilized ferrofluid-ferrofluid interface seal apparatus and method, which method comprises forming a ferrofluid-ferrofluid seal interface between a magnetized ferrofluid O-ring seal and unmagnetized ferrofluid from a ferrofluid reservoir, and maintaining a pressure difference across the ferrofluid-ferrofluid seal interface to stabilize the interface.
REFERENCES:
patent: 4254961 (1981-03-01), Fersht et al.
patent: 4424974 (1984-01-01), Mitsuya et al.
Crowley Richard P.
Ferrofluidics Corporation
Smith Robert I.
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