Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1979-02-06
1981-01-06
Smith, Robert I.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
418142, F01C 1908
Patent
active
042432332
ABSTRACT:
A novel sealing device of extremely simple and durable construction particularly adapted for use in sealing between the opposed flat end surfaces of two mutually movable members, for example, one for a rotary member and the other for a stationary member. The device includes a seal ring of novel construction having a flat sealing face and a tapered, conical sealing face formed on the opposite sides thereof, and an annular groove formed in said rotary member for receiving said seal ring, said groove being provided with a conical bottom surface. The seal ring is cut to provide itself with a radial expanding force. The annular groove has a radial breadth greater than that of said seal ring so that said seal ring is slidable under the action of said radially expanding force along said conical bottom surface of said groove in accordance with a change in the distance between said flat surfaces of said stationary and rotary members or in accordance with the increasing wear on said sealing faces of said seal ring to thereby urge at all times said flat and conical sealing faces in intimate sealing contact with the flat surface of said stationary member and the conical bottom surface of said groove of said rotary member, respectively. The seal ring is cut stepwise to form a pair of circumferential cut surfaces, by intimate contacting engagement of which a tight seal is produced at the cut portion of said seal ring.
REFERENCES:
patent: 2989209 (1961-06-01), Hersman
patent: 3554564 (1971-01-01), Lassanske
patent: 3554568 (1971-01-01), Held
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