Lip sealing ring with tow rows of projections and for a rotary s

Details Lip sealing ring with tow rows of projections and for a rotary s Lip sealing ring with tow rows of projections and for a rotary s

1984-09-25

1987-06-09

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277153, F16J 1532

Patent

active

046715193

ABSTRACT:
A sealing ring for a rotary shaft which serves to retain and/or return a lubricant, includes a generally annular rigid supporting member and a generally annular elastic sealing member connected to the supporting member. The sealing member terminates in a sealing surface contacting the shaft with one side of the sealing surface directed toward the ring lubricant and the other side toward the atmosphere. On the atmospheric side, spaced-apart projections rest against the shaft surface. Projections on the lubricant side also press against the shaft surface. The projections on both sides include edges oriented obliquely to the shaft axis which provide pumping action when the shaft rotates. Lubricant pumped under the sealing surface to the atmospheric side by projections on the lubricant side is pumped back by the projections on the atmospheric side. In the process the seal is lubricated.

REFERENCES:
patent: 3586342 (1971-06-01), Staab
patent: 3785660 (1974-01-01), Bush
patent: 3790180 (1974-02-01), Heyn et al.
patent: 3807743 (1974-04-01), Burke
patent: 3868105 (1975-02-01), Bentley
patent: 3895814 (1975-07-01), Kupfert et al.
patent: 3921987 (1975-11-01), Johnston et al.
patent: 4084826 (1978-04-01), Vossieck et al.
patent: 4183543 (1980-01-01), Antonizi
patent: 4441722 (1984-04-01), Pichler

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