Dual-seal-ring shaft seal

Details Dual-seal-ring shaft seal Dual-seal-ring shaft seal

1987-01-02

1988-07-05

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 59, 277 75, 277 83, 277135, F16J 1540, F16J 15447

Patent

active

047549840

ABSTRACT:
An intershaft seal device between inner and outer coaxial shafts of a mulle spool turbine is characterized by a primary seal ring and carrier assembly that is keyed for rotation with, and axial movement relative to, the outer shaft with the primary seal ring running between races mounted on the inner shaft. A secondary seal ring is disposed between a cylindrical portion of the primary seal ring carrier and a tubular flange extending coaxially from the outer shaft and effects a balance of axial forces resulting from pressure zones separated by the seal device.

REFERENCES:
patent: 2643141 (1953-06-01), Bryant
patent: 3825364 (1974-07-01), Halila et al.
patent: 4078809 (1978-03-01), Garrick et al.
patent: 4099727 (1978-07-01), Weiler
patent: 4257735 (1981-03-01), Bradley et al.
patent: 4402515 (1983-09-01), Malott

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