Centrifugal-type slide ring seal

Details Centrifugal-type slide ring seal Centrifugal-type slide ring seal

1985-03-29

1986-07-08

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 27, 277 29, 277 88, F16J 1534, F16J 1540

Patent

active

045989133

ABSTRACT:
A liquid sealed shaft seal for a rotatable shaft comprises a housing disposed around the shaft and defining a seal chamber which can be supplied with sealing liquid. A seal disc is fixed to the shaft and extends into the chamber. An axially movable piston is mounted on the housing for axial movement toward and away from a side face of the seal disc. The piston is provided with a slide ring which engages the slide disc when the shaft is at a standstill and which, through a circumferentially induced increase in pressure for the sealing liquid in the chamber, is moved axially away from the disc when the shaft and disc rotate. A resilient bellows is connected between the piston and the housing for biasing the piston toward the disc.

REFERENCES:
patent: 2646999 (1953-07-01), Barske
patent: 2903970 (1959-09-01), Elovitz et al.
patent: 2978264 (1961-04-01), Campbell
patent: 3090654 (1963-05-01), Wald et al.
patent: 3291491 (1966-12-01), Smith
patent: 3375014 (1968-03-01), Chubb et al.
patent: 3480284 (1969-11-01), Voitik
patent: 3506276 (1970-04-01), Petersen et al.
patent: 4071253 (1978-01-01), Heinen et al.
patent: 4291887 (1981-09-01), Frosch et al.

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