Seal for pistons and piston rods of cylinder-type actuators

Details Seal for pistons and piston rods of cylinder-type actuators Seal for pistons and piston rods of cylinder-type actuators

1976-05-27

1978-08-29

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277165, 277170, F16J 1520

Patent

active

041099214

ABSTRACT:
An annular seal for pistons and piston rods of cylinder-type actuators, especially hydraulic actuators, where a first sealing ring of highly elastic material is received inside an annular groove in such a way that a sharp edge of the ring exerts an elevated contact pressure against a cooperating sliding surface which creates dry friction and which shears and smoothens a dry lubricant coating on the sliding surface which has previously been deposited there by a second, plastically yielding sealing ring received inside the same annular groove.

REFERENCES:
patent: 2600321 (1952-06-01), Pyle
patent: 3323806 (1967-06-01), Smith et al.
patent: 3326562 (1967-06-01), Deuring
patent: 3549154 (1970-12-01), Jones
patent: 3642290 (1972-02-01), Millsap
patent: 3759148 (1973-09-01), Geoffroy
patent: 3915461 (1975-10-01), Gautier

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