Shaft seal with controlled porosity elements

Details Shaft seal with controlled porosity elements Shaft seal with controlled porosity elements

1993-06-15

1996-01-02

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 23, 277 55, 277 65, 277 56, F02F 1100

Patent

active

054801613

ABSTRACT:
A labyrinth type seal assembly having one or more controlled porosity elements retained in the labyrinth pathway between relatively rotatable seal elements. Preferably the controlled porosity elements are formed of open celled foam material such as polyurethane. The controlled porosity elements assist in preventing the ingress of contaminating solid or liquid materials, the loss of sealed materials and the flooding or overloading of drain ports.

REFERENCES:
patent: 1917987 (1933-07-01), Large
patent: 3825364 (1974-07-01), Halila et al.
patent: 4817966 (1989-04-01), Borowski
patent: 4852890 (1989-08-01), Borowski
patent: 4943068 (1990-07-01), Hatch et al.
patent: 5024451 (1991-06-01), Borowski
patent: 5244216 (1993-09-01), Rhode

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