Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1979-03-07
1980-08-26
Ward, Jr., Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 55, 277152, F16J 1544, F16J 1532
Patent
active
042192056
ABSTRACT:
A multiple lip seal for oil and like fluids. The seal has an annular metal or like rigid casing portion of generally U-shaped cross section. A seal body is bonded to one flange of the U, and the body includes axially spaced apart, radially extending lips formed integrally with said body. In the preferred form, the flange about which the body is formed extends axially a distance at least as far as the extent of the multiple lip so that there is radial support for each of the lips, while the oppositely directed or other flange of the U-shaped casing remains free from rubber for mounting in a machine counterbore.
The axially inner, intermediate and outer lips have different inside diameters in some cases and have the same diameters in other cases. Preferably, the body is thickest, and the radial extent of the lips is the shortest, at the axially inner portion of the seal. The seal assemblies can be made in either radially inwardly-acting form or in radially outwardly-acting form, depending upon the intended application. The U-shaped flange provides convenience of mounting and enables the minimal amount of rubber to be used, while providing the radial support for the axially inner seal lips referred to above.
REFERENCES:
patent: 3021161 (1962-02-01), Rhoads et al.
patent: 3194571 (1965-07-01), Peickii et al.
patent: 3445121 (1969-05-01), Lineker
Christiansen Keith W.
Reichenbach Jerry D.
CR Industries
Fitzgibbon James T.
Ward, Jr. Robert S.
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