Face seal with double spiral grooves

Details Face seal with double spiral grooves Face seal with double spiral grooves

1992-04-02

1993-04-13

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 81R, F16J 1532

Patent

active

052015319

ABSTRACT:
A mechanical face seal for a high speed, rotary fluid pressure device comprising rotating and stationary seal rings disposed in a housing and having confronting radial seal faces normally biased into engagement with one another. Oppositely inclined sets of spiral grooves are formed in the seal face of one ring, one set functioning to pump fluid from the reservoir downstream between the seal faces, and the other set functioning to pump fluid between the faces upstream back toward the reservoir. Each downstream pumping groove preferably intersects only one upstream pumping groove. Fluid pressure between the faces forms a gap therebetween, and the reversely inclined groove construction minimizes fluid loss or leakage.

REFERENCES:
patent: 3109658 (1963-11-01), Barrett et al.
patent: 3638957 (1972-02-01), Marsi
patent: 3744805 (1973-07-01), Heinrich
patent: 3751045 (1973-08-01), Lindeboom
patent: 4420162 (1983-12-01), Yanai et al.
patent: 4645414 (1987-02-01), DeHart et al.
patent: 5090712 (1992-02-01), Pecht et al.

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