Mechanical seal

Details Mechanical seal Mechanical seal

1998-10-26

2000-11-14

Dayoan, B.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 92, 277 42, 277 43, F16J 1538

Patent

active

061458414

ABSTRACT:
A high sealability mechanical seal which has a small-volume mating ring, which highly efficiently transmits the shaft's revolving force to the mating ring, and which has a minimal load variation on the sliding face. The gist of the present invention is in a mechanical seal where the bellows is made of rubber; a coiled wave spring which is a spirally wound narrow thin strip is interposed in a compressed state between the end of the seal ring side of the bellows and a middle wall of the roughly U-shaped cross-sectional cartridge; and the other end of the bellows is mounted, on the inner circumferential side of the coiled wave spring, via a driving band in the inner circumferential casing of said roughly U-shaped cross-sectional cartridge.

REFERENCES:
patent: 4451049 (1984-05-01), Charhut
patent: 4502698 (1985-03-01), Collins
patent: 4707150 (1987-11-01), Graham
patent: 4779876 (1988-10-01), Novosad
patent: 4917389 (1990-04-01), Baker et al.
patent: 5199719 (1993-04-01), Heinrich et al.
patent: 5676382 (1997-10-01), Dahlheimer
patent: 5803444 (1998-09-01), Shibuya et al.
Abstract of "Mechanical Seal", Japanese Utility Model Publication No. 1-18931, published Jun. 1, 1989.

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