Seal, scraper, and guide for piston rod of single-action cylinde

Details Seal, scraper, and guide for piston rod of single-action cylinde Seal, scraper, and guide for piston rod of single-action cylinde

1981-09-10

1983-08-30

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277152, 277165, 277186, F16J 1532

Patent

active

044013078

ABSTRACT:
A seal and guide assembly has an outer normally fixed element having a cylindrical throughgoing passage centered on an axis, extending between an axially inside high-pressure side and an axially outside low-pressure side, and having an inner element surface formed with a shoulder facing the inside high-pressure side. A cylindrical normally axially slidable element extends axially between the sides through the passage and has an outer element surface spaced radially inwardly of the inner element surface. A tubular body in the passage surrounds the slidable element and has an end face flatly abutting the shoulder, an axially inside end lip exposed at the inside high-pressure side, having a web connecting it to the body, and an end lying in the absence of the slidable element radially inward of the cylindrical inner surface and normally bearing radially inward on this slidable element, axially interengaging locking formations on the fixed element and on the body for blocking the body in the fixed element against axially inward displacement, and an axially outside end scraper lip exposed at the outside low-pressure side, lying in the absence of the slidable element radially inward of the cylindrical inner surface, and normally bearing radially inward on the slidable element. An elastomeric ring at the inner high-pressure side and engages between the inner lip and the wall and normally elastomerically urges the inside lip inward against the slidable element.

REFERENCES:
patent: 2981573 (1961-04-01), Reuter
patent: 4026563 (1977-05-01), Bainard
patent: 4261583 (1981-04-01), de Vries et al.
patent: 4280741 (1981-07-01), Stoll

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