Bearings – Rotary bearing – Plain bearing
Reexamination Certificate
2006-03-21
2006-03-21
Footland, Lenard A. (Department: 3682)
Bearings
Rotary bearing
Plain bearing
C384S902000, C428S566000, C428S547000
Reexamination Certificate
active
07014367
ABSTRACT:
An oil-impregnated sintered sliding bearing formed of a porous iron-based sintered alloy with quenched structure and receiving a high surface pressure capable of reducing the number of finishing steps by cutting and grinding and providing a bearing performance equivalent to or higher than that of conventional bearings, wherein a plurality of ridge-and-groove lines having a height difference of 2 to 12.5 μm and extending in circumferential direction are axially arranged in parallel with each other by boring the bearing surface thereof to form a wavy surface in axial direction, and the portion thereof deeper by 10 to 60 μm from the outer layer of the bearing surface is formed dense to seal surface pores so as to reduce the pores opening to the outer surface to 1 to 10 percent by area, whereby the bearing can be used at a surface pressure of 6 kgf/mm2(58.5 MPa) or higher and a sliding speed of 2 to 5 cm/s.
REFERENCES:
patent: 2042635 (1936-06-01), Schellens
patent: 2332733 (1943-10-01), Lignian
patent: 2763519 (1956-09-01), Thomson
patent: 3985408 (1976-10-01), Bierlein et al.
patent: 4726695 (1988-02-01), Showalter
patent: 4758202 (1988-07-01), Maciag et al.
patent: 4967705 (1990-11-01), Maciag et al.
patent: 5817397 (1998-10-01), Kamiya et al.
patent: 6303235 (2001-10-01), Kawakami et al.
patent: 0 655 562 (1995-05-01), None
patent: 0 709 585 (1996-05-01), None
patent: 0 709 587 (1996-05-01), None
patent: 1-219108 (1989-09-01), None
patent: 10-246230 (1998-09-01), None
Akita Hideki
Gokita Osamu
Kobayashi Jun'ichi
Maruyama Kazuo
Miyasaka Motohiro
Footland Lenard A.
Hansen Colby
Hitachi Construction Machinery Co. Ltd.
Hitachi Powered Metals Co., Ltd.
LandOfFree
Oil-impregnated sintered sliding bearing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Oil-impregnated sintered sliding bearing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oil-impregnated sintered sliding bearing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3552175