Throttling bushing for shaft seal

Details Throttling bushing for shaft seal Throttling bushing for shaft seal

1980-12-24

1986-05-06

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 53, F16J 1534

Patent

active

045867178

ABSTRACT:
An improved throttling bushing for a seal is used in a machine which has a casing and a shaft journaled in the casing. The throttling bushing reduces the flow of cooling and flushing fluid by maintaining a closer tolerance at the throttling bushing by using a labyrinth mounted on the shaft or a sleeve attached to the shaft, and an elastic bushing attached to the casing and positioned around the labyrinth. The clearance between the elastic bushing of the labyrinth is dimensioned to provide noncontact clearance prior to assembly.

REFERENCES:
patent: 2824759 (1958-02-01), Tracy
patent: 2998991 (1961-09-01), Spencer
patent: 3096985 (1963-07-01), Biheller
patent: 3236529 (1966-02-01), Heim
patent: 3666276 (1972-05-01), Hubler
patent: 4146238 (1979-03-01), Gaffal
patent: 4257735 (1981-03-01), Bradley et al.
Borg-Warner Catalog Type BX, BXC & BXT Mechanical Seals-No. 1863-11.
Borg-Warner Catalog Type BX Mechanical Seals-No. 1863-3.2.

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