Self-sealing mechanical seal gland for pumps and other machinery

Details Self-sealing mechanical seal gland for pumps and other machinery Self-sealing mechanical seal gland for pumps and other machinery

1988-08-15

1991-02-19

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 72FM, 277 73, 277 81R, 277 93SD, F16J 1502, F16J 1514

Patent

active

049937200

ABSTRACT:
An improved "infield" cylindrical sealing gland which is constructed to be secured in mating relation providing a positive seal to the pump housing to supplement a sealing assembly for pumps and other machinery, including rotating shafts. The contacting surface of the gland in face-to-face relation to the pump housing is provided with one or more annular grooves in which are seated O-rings which bear against the surface of the pump housing. Structure is provided to interpose a viscous liquid into the grooves to produce hydraulic pressure against the internal surfaces of the O-rings compressing them against the surface of the pump housing in order to compensate for mismatches in the surfaces caused by corrosion, or other discrepancies.

REFERENCES:
patent: 954668 (1910-04-01), Cable et al.
patent: 1889606 (1932-11-01), Lange
patent: 3081821 (1963-03-01), Hamilton
patent: 3091470 (1963-05-01), Anderson et al.
patent: 3183007 (1965-05-01), Tann
patent: 3259390 (1966-07-01), Sanford
patent: 3331610 (1967-07-01), Olson
patent: 3860270 (1975-01-01), Arnold
patent: 3910587 (1975-10-01), Loeffler
patent: 3944263 (1976-03-01), Arnold
patent: 4305593 (1981-12-01), Smith
patent: 4832351 (1989-05-01), Ciotola

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