Seal assembly

Details Seal assembly Seal assembly

1992-04-22

1993-06-08

Will, Thomas B.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 2, 277 27, 277 53, 277 92, 277 59, 277 81R, F16J 1532

Patent

active

052172350

ABSTRACT:
A sealing assembly between first and second relatively rotatable parts, such as the parts of a tunnel boring machine, in which a flange on a first part has a radial sealing face engaged by the axial faces of inner and outer sealing rings mounted on the body portion of the second part at radially spaced locations, a bleed passage in the second body portion opening between the sealing rings and indicating any failure in the outer sealing ring.

REFERENCES:
patent: 2033403 (1936-03-01), Smittle
patent: 2679412 (1954-05-01), Whitfield
patent: 3044785 (1962-07-01), Geyer
patent: 3914752 (1975-10-01), Howard et al.
patent: 4423878 (1984-01-01), Escue
patent: 4809992 (1989-03-01), Kemp, Jr. et al.
patent: 4813689 (1989-03-01), Stalter et al.
patent: 4819999 (1989-04-01), Livesay et al.
patent: 4900039 (1990-02-01), Klecker et al.

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