Seals for rotating shafts, especially for stern tube seals for s

Details Seals for rotating shafts, especially for stern tube seals for s Seals for rotating shafts, especially for stern tube seals for s

1974-09-23

1977-02-22

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 58, F16J 1554

Patent

active

040088979

ABSTRACT:
A seal for a rotating shaft, especially for the stern tube seal of a ship, ith at least one radial sealing ring bearing in sealing manner against the shaft or a shaft bush, or at least one reserve sealing ring mounted on a support, which can be moved by axial displacement of the support into a working position on the shaft, wherein the support is arranged so as to be axially movable in guides on parts of the housing of the seal and is provided with a chamber for receiving a pressure medium, especially a hydraulic medium, for moving the support to bring the sealing ring (reserve sealing ring) into a working position on the shaft.

REFERENCES:
patent: 2925291 (1960-02-01), Bygbjerk
patent: 3432172 (1969-03-01), Hendrickson
patent: 3514114 (1970-05-01), Monahan
patent: 3563555 (1971-02-01), Koons
patent: 3773336 (1973-11-01), Walter et al.

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