Mechanical seal

Details Mechanical seal Mechanical seal

1990-03-01

1991-12-31

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 29, 277 41, 277 65, 277 70, 277 72R, 277 81R, 277 87, 277202, 277206A, F16J 1538

Patent

active

050765892

ABSTRACT:
An improved mechanical seal assembly for separating high pressure fluid from lower pressure fluid including a vented Quad-ring in a non-rotatable seal ring for providing lower sliding friction and improved, more consistent pressure deflection of the non-rotating seal face, an improved means for positioning a pressure breakdown means located in the high pressure fluid for controlling the pressure differential between the high pressure fluid and the low pressure fluid by a predetermined amount and means for improving the circulation of clean fluid around the outer periphery of the seal assembly under conditions where the fluid being pumped is contaminated.

REFERENCES:
patent: 2628852 (1953-02-01), Voytech
patent: 2824759 (1958-02-01), Tracy
patent: 2836440 (1958-05-01), Brumagim
patent: 2983533 (1961-05-01), Tisch
patent: 3068012 (1962-12-01), Van Vleet
patent: 3360272 (1967-12-01), Blom et al.
patent: 3526408 (1970-09-01), Tracy
patent: 3813103 (1974-05-01), Wiese
patent: 4272084 (1981-06-01), Martinson
patent: 4475736 (1984-10-01), Lesiecks
patent: 4586719 (1986-05-01), Marsi et al.

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