Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1995-10-26
1998-03-24
Cummings, Scott
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277390, F16J 1534
Patent
active
057304475
ABSTRACT:
A magnetic rotary seal is provided for sealing a shaft to a housing, comprising a rotary seal head having a first annular surface; a first O-ring disposed between the rotary seal head and the shaft for sealably coupling the rotary seal head to the shaft; a housing adaptor disposed within the housing; a magnetic stationary ring disposed within the housing adaptor, wherein the stationary ring includes a second annular surface; a second O-ring disposed between the housing adaptor and the stationary ring for sealably coupling the stationary ring to the housing adaptor; and a plurality of magnets disposed within the rotary seal head for urging the first annular surface against the second annular surface. The second O-ring is held within opposing circumferential grooves formed in the housing adaptor and the stationary ring, which prevents the stationary ring from leaving the housing adaptor. The grooves are formed into the housing adaptor and the stationary ring such that a gap is created between the housing adaptor and the bottom surface of the stationary ring. During operation, the resiliency of the second O-ring and the presence of the gap allow the stationary ring to dynamically respond to any misalignment of the seal head while the opposing grooves serve to prevent the stationary ring from moving axially within the housing adaptor.
REFERENCES:
patent: 2690360 (1954-09-01), Young
patent: 3014742 (1961-12-01), Mayer
patent: 3050319 (1962-08-01), Colby
patent: 3080170 (1963-03-01), Colby
patent: 3919004 (1975-11-01), Benz
patent: 3926443 (1975-12-01), Fenerty et al.
patent: 4795168 (1989-01-01), Adams et al.
patent: 4844483 (1989-07-01), Iijima
patent: 5078411 (1992-01-01), Geco
Anderson Gary D.
Dawson Stephen M.
Cummings Scott
Delaune Warner J.
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