Piston fluid seal mounting

Details Piston fluid seal mounting Piston fluid seal mounting

1979-02-15

1980-04-01

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277188R, 277205, F16J 1532

Patent

active

041958497

ABSTRACT:
PCT No. PCT/US 79/00091 Sec. 371 Date Feb. 15, 1979 Sec. 102(e) Date Feb. 15, 1979, PCT Filed Feb. 15, 1979, Ser. No. 30,243.
A cylinder (10) and piston (14) device has a piston (14) with a circumferential fluid seal mounting band (17) near one of its ends, a step (19) defining a piston end portion (20) of smaller diameter than the band (17), and a snap-ring groove (21) in the end portion (20) near the step (19). A stressed fluid seal (22) which is mounted on the band (17) has an unstressed diameter (across 25) less than that of the band (17) but greater than that of the piston end portion (20); and a retaining ring (27) for the fluid seal (22) is held adjacent the step (19) by a snap-ring (28) in the groove (21).

REFERENCES:
patent: 320829 (1885-06-01), Woodbury
patent: 1618412 (1927-02-01), Dorward
patent: 2626839 (1953-01-01), Creson et al.
patent: 2742333 (1956-04-01), Taylor
patent: 2926976 (1960-03-01), Bowerman et al.
patent: 4116452 (1978-09-01), Schanz

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