Multi lip seal

Details Multi lip seal Multi lip seal

1983-12-02

1985-12-24

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 961, F16J 1534

Patent

active

045601747

ABSTRACT:
A novel seal means is positioned between two coupled mechanical parts rotating about a pin, the pin being connected to one part and rotating within a bushing connected to the other part with pin and bushing. The seal means comprises an elastic load ring of relatively soft material and a seal ring of "L"-shaped cross section made from tough abrasion resistant material and having at least two seal projections engaging the bushing for retaining lubricant and for preventing dirt from adversely affecting the operation of the seal means. In one embodiment, a hard back up ring, made for example from metal or rigid plastic, is supported in an annular seat in the seal ring for reinforcing the seal ring. The seal means may be employed as end face seals in a track joint for an endless chain for a crawler tractor.

REFERENCES:
patent: 3266269 (1966-08-01), Stokely
patent: 3560059 (1971-02-01), Miyake
patent: 4209204 (1980-06-01), Wagner et al.
patent: 4445695 (1984-05-01), Wilkinson

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