Cartridge seal

Details Cartridge seal Cartridge seal

1985-03-22

1986-06-24

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 39, 277152, F16J 1532, F16J 1534

Patent

active

045963940

ABSTRACT:
A cartridge seal has concentric outer and inner rings which snap together relatively rotatably to form the cartridge. Each ring has a generally L-shaped, inner axial profile with generally axial and radial legs thereof oppositely disposed. A sealing lip on the radial leg of the outer ring sealingly bears against an abutment surface on the radial leg of the inner ring to accommodate radial excursions during relative rotation therebetween. At least the radial leg of the inner ring is made of a material, for example metal, which conducts heat well. Frictional heat of the sealing lip against the abutment upon relative rotation is thus conducted to the surface of the radial leg of the inner ring opposite the abutment surface for dissipation. Heat dissipation is further improved with depressions in the opposite surface for expanding its surface area and, if the depressions are radial grooves, circulating a fluid medium wetting the surface to carry away the dissipated heat.

REFERENCES:
patent: 3330564 (1967-07-01), Sikora
patent: 4049281 (1977-09-01), Bainard
patent: 4185838 (1980-01-01), Danner
patent: 4311346 (1982-01-01), Danner
patent: 4437673 (1984-03-01), Miyamoto
patent: 4516783 (1985-05-01), Mitsue
patent: 4544168 (1985-10-01), Hans et al.

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