Oil impregnated sintered bearing and manufacturing method...

Details Oil impregnated sintered bearing and manufacturing method... Oil impregnated sintered bearing and manufacturing method...

2005-11-14

2011-11-15

Pilkington, James (Department: 3656)

Bearings

Rotary bearing

Plain bearing

C384S902000

Reexamination Certificate

active

08057101

ABSTRACT:
There is provided an oil-impregnated sintered bearing which enable to prevent oil leakage from an outer peripheral surface of an bearing body. The oil-impregnated sintered bearing includes a bearing body which is made of a porous sintered alloy containing vacancies and has a bearing hole in which a rotary shaft can be inserted, wherein the vacancies opened on an outer peripheral surface of the bearing body are crushed. The vacancies may be crushed in the state of a green compact, or in the state of a sintered alloy after sintering the green compact. Consequently, the oil leakage from the outer peripheral surface of the bearing can be prevented, and oil pressure in the bearing hole can be preserved.

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US Office Action mailed Aug. 26, 2011 for the corresponding U.S. Appl. No. 12/856,381 (Divisional of the current application).

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