Fluid sealing structure

Details Fluid sealing structure Fluid sealing structure

1988-09-16

1990-02-13

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277176, 277188R, 277207R, 277215, 384477, F16J 1544

Patent

active

049000420

ABSTRACT:
In a fluid sealing structure having an annular sealing member and a backup ring which supports the annular sealing member, for sealing a fluid charged in a working chamber formed by two relatively rotatable members, the backup ring is formed with at least one communication cavity for discharging fluid, charged from outside to between the sealing member and the backup ring when pressure within the working chamber drops, after pressure within the working chamber rises, so that the sealing member is not deformed into damage due to expansion of the charged fluid at high temperature.

REFERENCES:
patent: 2162218 (1939-06-01), Hill
patent: 3100647 (1963-08-01), Lee
patent: 3480284 (1969-01-01), Voitik
patent: 4674754 (1987-06-01), Lair et al.
patent: 4712801 (1987-12-01), Kaller

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