Bearing isolator with porous seal

Details Bearing isolator with porous seal Bearing isolator with porous seal

2006-08-29

2008-12-09

Patel, Vishal (Department: 3676)

Seal for a joint or juncture

Seal between relatively movable parts

Diverse and distinct dynamic seals

C277S411000

Reexamination Certificate

active

07461846

ABSTRACT:
A bearing isolator assembly for sealing a rotating shaft with a porous sealing element including a rotor configured to sealingly engage with a shaft, and a stator configured to sealingly engage with a housing of an assembly. The rotor and stator are configured to engage with each other to define a labyrinthine pathway and one or more cavities, in which may be disposed a unitizing element and a porous sealing element. The porous sealing element provides a barrier to particulate contaminants from entering the interior of the housing, and to prevent egress of lubricants from the interior of the housing. The unitizing element limits axial and/or radial movement of the rotor with respect to the stator, and helps prevent wear of the rotor and/or stator by helping prevent the rotor from contacting the stator during operation.

REFERENCES:
patent: 2554488 (1951-05-01), Carr
patent: 4277072 (1981-07-01), Forch
patent: 4817966 (1989-04-01), Borowski
patent: 4852890 (1989-08-01), Borowski
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patent: 5028054 (1991-07-01), Peach
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patent: 6390477 (2002-05-01), Drago et al.
patent: 6471215 (2002-10-01), Drago et al.
patent: 6485022 (2002-11-01), Fedorovich
patent: 2006/0087084 (2006-04-01), Chitren et al.

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