Bearing device

Details Bearing device Bearing device

2006-01-31

2006-01-31

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Plain bearing

C384S276000

Reexamination Certificate

active

06991377

ABSTRACT:
A bush is provided at its sliding surface with oil-supply groove portions. An area ratio of the oil-supply groove portions to the sliding surface of the journal shaft is set to 30 to 90%. A length L1between the oil-supply groove portions in a circumferential direction and an inner diameter D of the bearing satisfy L1<πD/36. Even in a bearing device in which the journal shaft and the bush mutually rotate in a predetermined angle range or in which the journal shaft and the bush relatively and continuously rotate, the present invention can effectively be used while maintaining the existing sizes of the journal shaft and the bush, and it is possible to prevent partial break of oil film or shortage of oil film.

REFERENCES:
patent: 2572021 (1951-10-01), Folz
patent: 3841716 (1974-10-01), Webber et al.
patent: 4105267 (1978-08-01), Mori
patent: 5433532 (1995-07-01), Kawageo et al.
patent: 5462362 (1995-10-01), Yuhta et al.
patent: 6585419 (2003-07-01), Ono et al.
patent: 6698932 (2004-03-01), Hamaguchi et al.
patent: 9-68217 (1997-03-01), None

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