Hybrid magnetic fluid shaft seals

Details Hybrid magnetic fluid shaft seals Hybrid magnetic fluid shaft seals

1976-12-27

1977-10-18

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 80, 277135, F16J 1542

Patent

active

040542939

ABSTRACT:
An improved dynamic shaft seal particularly useful with submersible pumps employing in combination magnetic fluid seals and a centrifugal seal filled with a magnetic seal fluid, wherein the centrifugal seal provides sealing at high rotational speeds, and the magnetic seals prevent escape of fluid from the centrifugal seal chamber at low rotational speeds.

REFERENCES:
patent: 1773067 (1930-08-01), Ver Planck
patent: 2557140 (1951-06-01), Razdowitz
patent: 3097853 (1963-07-01), McHugh
patent: 3620584 (1971-11-01), Rosensweig

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