Mechanical seal

Details Mechanical seal Mechanical seal

1997-10-24

2000-06-13

Knight, Anthony

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

F16J 1532, F16J 1534

Patent

active

060739347

ABSTRACT:
A sealing arrangement for a pump including an electric motor/generator and a pump housing, said sealing arrangement including: an intermediate barrier liquid chamber; a mechanical face seal positioned between the pump housing and the intermediate barrier liquid chamber; and, a pumping seal positioned between the intermediate barrier liquid chamber and the electric motor/generator such that air is on a first side thereof and liquid contained in the intermediate barrier liquid chamber is on an oppositely disposed second side thereof, the pumping seal being adapted to repump leakage of liquid from the second side to the first side of the pumping seal.

REFERENCES:
patent: 3675935 (1972-07-01), Ludwig et al
patent: 3704019 (1972-11-01), McHugh
patent: 3767212 (1973-10-01), Ludwig
patent: 3770179 (1973-11-01), McHugh
patent: 3894741 (1975-07-01), McHugh
patent: 4290611 (1981-09-01), Sedy
patent: 4889348 (1989-12-01), Amundson et al.
patent: 5039113 (1991-08-01), Gardner
patent: 5058905 (1991-10-01), Nosowicz et al.
patent: 5529315 (1996-06-01), Borrino et al.

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