One-piece seal for rotating annular interface

Details One-piece seal for rotating annular interface One-piece seal for rotating annular interface

1992-06-01

1993-02-23

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 19, 277 42, 277 70, 277139, 277142, 277175, 277216, F16J 906

Patent

active

051883740

ABSTRACT:
A seal for the rotating annular interface between a transmission input shaft and surrounding piston drum is uniquely configured as a single, integral part. A circular trough with two annular side walls is machined into the input shaft. The seal includes two annular side rings sized to contact the inside of the piston drum radially, and to contact the side walls of the trough axially. A bridging section joins the two side rails, and also preloads them into the trough side walls. Therefore, when hydraulic fluid is pumped between the side rails, it is prevented from leaking between the side rings and side walls and into the interface.

REFERENCES:
patent: 2656230 (1953-01-01), Phillips
patent: 2749193 (1956-06-01), Traub
patent: 2983533 (1961-05-01), Tisch
patent: 3036846 (1962-05-01), Pecas
patent: 3186723 (1965-06-01), Wagner
patent: 3333856 (1967-08-01), Voitik
patent: 3588125 (1971-06-01), Mastromatteo
patent: 3917288 (1975-01-01), Huber et al.
patent: 4165079 (1979-08-01), Clements

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