Piston rod seal

Details Piston rod seal Piston rod seal

1979-12-06

1981-02-17

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277114, F16J 1556

Patent

active

042510813

ABSTRACT:
Piston rod sealing means of the type in which oil is applied to the low pressure side (5) of the seal and used to prevent escape of high pressure gas between the piston rod (6) surface and a surrounding surface of a plastic material gland (12) are improved by providing the gland (12) with a tubular extension (15) of slightly increasing inner diameter in the direction against the high pressure side (4) of the seal. The gland (12) is forced against the piston rod surface, but the tubular extension (15) is not influenced by the force on the gland (12).

REFERENCES:
patent: 3810634 (1974-05-01), Hakanson
patent: 3848877 (1974-11-01), Bengtsson
patent: 4083566 (1978-04-01), Bengtsson
patent: 4146237 (1979-03-01), Bergman
patent: 4170363 (1979-10-01), Bergman

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