Piston rod seal

Details Piston rod seal Piston rod seal

1988-05-26

1989-05-23

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

92 865, 92153, 92168, 277102, 277212C, F16J 1516, F16J 1556

Patent

active

048323527

ABSTRACT:
This invention relates to a piston rod seal in which the rod along which leakage should be avoided is surrounded by a gland of a plastically deformable material. The gland is mounted at the high pressure side of a wall through which the piston rod is passed and is provided with a conical extension divering towards the high pressure side of the seal and acting as a pump for returning oil applied to the piston rod at the low pressure side of the piston rod and drawn through the gland. The gland is provided with a radial flange axially clamped between a metal ring and a spring support. An O-ring is mounted between the wall, the ring, and the gland.

REFERENCES:
patent: 877706 (1908-01-01), Duffy
patent: 895038 (1908-08-01), Otto
patent: 2847262 (1958-08-01), Gratzmuller
patent: 3004783 (1961-10-01), Webb
patent: 3059937 (1962-10-01), Wettstein
patent: 3096096 (1963-07-01), Banks
patent: 3602520 (1971-08-01), Wallis
patent: 3828897 (1974-08-01), Randyal
patent: 3973782 (1976-08-01), Evans
patent: 4146237 (1979-03-01), Bergman
patent: 4251081 (1981-02-01), Skoog

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