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Title:
OIL-IMPREGNATED SINTERED BEARING
Document Type and Number:
WIPO Patent Application WO/2004/113747
Kind Code:
A1
Abstract:
An oil-impregnated sintered bearing has, for a longer operating life, a large storage amount of lubrication oil as a bearing element and less consumption of the oil by scattering. Additionally, the bearing has a simple structure and requires less space. The bearing is made by combining porous sintered members and joining them by sizing. The bearing has a cavity near the bearing center, at a portion where constituting members oppose to one another. A gap having a smaller width than the cavity is opened from the cavity along an opposing face of a constituting member to an end face or the outer periphery of the bearing.

Inventors:
Miyasaka, Motohiro c/o HITACHI POWDERED METALS CO. LTD. (520, Minoridai, Matsudo-sh, Chiba 95, 27022, JP)
Yoshida, Hiroyuki c/o MITSUBA CORPORATION (1-2681 Hirosawa-cho, Kiryu-sh, Gunma 55, 37685, JP)
Okada, Michio c/o MITSUBA CORPORATION (1-2681 Hirosawa-cho, Kiryu-sh, Gunma 55, 37685, JP)
Tsukuda, Tooru c/o MITSUBA CORPORATION (1-2681 Hirosawa-cho, Kiryu-sh, Gunma 55, 37685, JP)
Ishizaki, Mitsunari c/o MITSUBA CORPORATION (1-2681 Hirosawa-cho, Kiryu-sh, Gunma 55, 37685, JP)
Mizote, Norihito c/o MITSUBA CORPORATION (1-2681 Hirosawa-cho, Kiryu-sh, Gunma 55, 37685, JP)
Sando, Hidetaka c/o MITSUBA CORPORATION (1-2681 Hirosawa-cho, Kiryu-sh, Gunma 55, 37685, JP)
Application Number:
PCT/JP2004/008043
Publication Date:
December 29, 2004
Filing Date:
June 09, 2004
Export Citation:
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Assignee:
HITACHI POWDERED METALS CO., LTD. (520 Minoridai, Matsudo-shi Chiba, 95, 27022, JP)
MITSUBA CORPORATION (1-2681, Hirosawa-cho Kiryu-sh, Gunma 55, 37685, JP)
Miyasaka, Motohiro c/o HITACHI POWDERED METALS CO. LTD. (520, Minoridai, Matsudo-sh, Chiba 95, 27022, JP)
Yoshida, Hiroyuki c/o MITSUBA CORPORATION (1-2681 Hirosawa-cho, Kiryu-sh, Gunma 55, 37685, JP)
Okada, Michio c/o MITSUBA CORPORATION (1-2681 Hirosawa-cho, Kiryu-sh, Gunma 55, 37685, JP)
Tsukuda, Tooru c/o MITSUBA CORPORATION (1-2681 Hirosawa-cho, Kiryu-sh, Gunma 55, 37685, JP)
Ishizaki, Mitsunari c/o MITSUBA CORPORATION (1-2681 Hirosawa-cho, Kiryu-sh, Gunma 55, 37685, JP)
Mizote, Norihito c/o MITSUBA CORPORATION (1-2681 Hirosawa-cho, Kiryu-sh, Gunma 55, 37685, JP)
Sando, Hidetaka c/o MITSUBA CORPORATION (1-2681 Hirosawa-cho, Kiryu-sh, Gunma 55, 37685, JP)
International Classes:
F16C23/04; F16C33/10; (IPC1-7): F16C33/10; F16C33/12
Foreign References:
JPH04219522A
JPS60104814A
JPH09151941A
JPH0629536Y2
Attorney, Agent or Firm:
Suenari, Mikio (Asaco Kyobashi Building 3rd floor, 6-13 Kyobashi 1-chome, Chuo-k, Tokyo 31, 10400, JP)
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