Pressure compensating device for a bearing housing

Details Pressure compensating device for a bearing housing Pressure compensating device for a bearing housing

2005-08-25

2008-08-12

Hannon, Thomas R (Department: 3682)

Bearings

Rotary bearing

Antifriction bearing

C384S462000, C384S474000

Reexamination Certificate

active

07410302

ABSTRACT:
The invention refers to a pressure compensating device (4) for a bearing housing, which is incorporating a sealed off compartment, and which device is intended to compensate pressure variations in the sealed off compartment, wherein the device (4) incorporates a housing (5, 6, 7), in which is positioned a bellows (9) of flexible material, which housing (4) has at least one first opening (10) through which the interior of the bellows (4) communicates with the side of the bearing housing where a varying pressure can be expected, and wherein the bellows (4) further is associated with an additional opening (8), adapted to allow the bellows (4) to alter its momentary form for compensating such pressure variations.

REFERENCES:
patent: 2676073 (1954-04-01), Boden
patent: 4039229 (1977-08-01), Ohlberg
patent: 4778285 (1988-10-01), Larson
patent: 6991378 (2006-01-01), Jacquemont et al.
patent: 2006/0045405 (2006-03-01), Pettersson et al.
patent: 526 177 (2005-07-01), None
patent: 429209 (1972-10-01), None
U.S. Appl. No. 11/543,923, filed Oct. 6, 2006.

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