Oil-damped rolling bearing

Details Oil-damped rolling bearing Oil-damped rolling bearing

2005-03-29

2005-03-29

Footland, Lenard A (Department: 3682)

Bearings

Rotary bearing

Hydraulic or pneumatic bearing support

Reexamination Certificate

active

06872003

ABSTRACT:
A rolling bearing for a turbomachine supporting a first shaft to rotate relative to a second shaft, and comprising: a plurality of rolling elements engaged between an inner annular ring mounted on the second shaft and an outer annular ring mounted on the first shaft; an oil film formed at an annular contact surface between said outer ring and said first shaft; at least one duct passing through said inner ring and opening out in an inner race for said rolling elements in order to lubricate them; and at least one additional duct passing through said inner ring and opening out outside the inner race in order to feed oil through said outer ring to said oil film under the effect of the centrifugal force generated by said second shaft rotating, said outer ring having an annular shoulder projecting radially towards the inside of said annular space, said shoulder having at least one channel opening out substantially in register with said additional duct and opening out into said oil film.

REFERENCES:
patent: 4479682 (1984-10-01), Olivier
patent: 4693616 (1987-09-01), Rohra et al.
patent: 4721398 (1988-01-01), Miyashita et al.
patent: 5749660 (1998-05-01), Dusserre-Telmon et al.
patent: 6261003 (2001-07-01), Dusserre-Telmon et al.
patent: 2001-295610 (2001-10-01), None

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