Annular reinforced wiper for piston rods

Details Annular reinforced wiper for piston rods Annular reinforced wiper for piston rods

1984-11-26

1986-10-21

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277166, 277188A, F16J 1532, F16J 1518

Patent

active

046181539

ABSTRACT:
An annular wiper for piston rods, disposed in a cylindrical wall opening wherein an axially movable piston rod is running, comprises a reinforced ring of an elastic, somewhat flexible material having a portion with an inner diameter slightly greater than the outer diameter of the piston rod and an axially outwardly projecting and radially inwardly projecting lip with a somewhat smaller inner diameter than the outer diameter of the piston rod. The reinforcement comprises a first annular portion surrounding the periphery of the elastic ring, creating a torque center line for the resilient ring, and a second annular portion absorbing as a compressive force the radially inwardly directed force exerted by the elastic ring as it turns around the torque center line.

REFERENCES:
patent: 4210339 (1980-07-01), Povejsil
patent: 4281590 (1981-08-01), Weaver

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