Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1979-04-30
1981-03-10
Ward, Jr., Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
308 9, 308 10, 308 363, 3081871, F16J 1500, F16J 1540
Patent
active
042549612
ABSTRACT:
Apparatus for containing a ferro-fluid within a reservoir of ferro-fluid using a pair of ferro-magnetic members adjacent each other and having opposing surfaces shaped as segments of surfaces of revolution, including magnetic apparatus for producing magnetic flux across the gap between the opposing surfaces. The surfaces diverge, and the greater magnetic flux density at the closely spaced edges of the pocket formed by the surfaces hold the ferro-magnetic particles of the ferro-fluid in that region. The volume between the two opposing surfaces is adequate to accommodate the thermal and pressure expansion and contraction of the fluid. The spacing between opposing members at the edge of farthest advance of the fluid is sufficiently small to allow the surface tension of the fluid to hold the fluid.
REFERENCES:
patent: 2557140 (1951-06-01), Razdowitz
patent: 2996162 (1961-08-01), Lehde
patent: 3475975 (1969-11-01), Sokol et al.
patent: 3483969 (1969-12-01), Rosenzweig
patent: 3612630 (1971-10-01), Rosenzweig
patent: 3620584 (1971-11-01), Rosenzweig
patent: 3726574 (1973-04-01), Tuffias et al.
patent: 3746407 (1973-07-01), Stiles et al.
patent: 3780593 (1973-12-01), Coleman et al.
patent: 3891282 (1975-06-01), Tuffias
patent: 3918773 (1975-11-01), Tuffias
Fersht Rena S.
Skinner Winston L.
Brown Roy L.
Gillmann H. E.
Litton Systems Inc.
Ward, Jr. Robert S.
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