Title:
LUBRICANT COMPOSITION, REDUCTION GEAR USING THE COMPOSITION, AND ELECTRIC POWER STEERING DEVICE USING THE REDUCTION GEAR
Document Type and Number:
WIPO Patent Application WO/2007/060885
Kind Code:
A1
Abstract:
Disclosed are: a novel lubricant composition which, even when a stress is applied
repeatedly for a long period, does not cause the increase in viscosity and therefore
does not cause the separation of a lubricant base oil or the leakage of the separated
base oil from a reduction gear or the like; a reduction gear using the lubricant
composition; and an electric power steering device. The lubricant composition
contains a combination of at least two thickening agents each containing lithium
stearate and shows a viscosity of 355 or greater in a mixed state (at 25ºC).
The reduction gear (50) has the lubricant composition containing microparticles
charged therein. The electric power steering device has the reduction gear integrated
therein.
Inventors:
KITAHATA KOUJI (JP)
KASAHARA FUMIAKI (JP)
SHIRAI YOSHIMASA (JP)
KASAHARA FUMIAKI (JP)
SHIRAI YOSHIMASA (JP)
Application Number:
PCT/JP2006/322967
Publication Date:
May 31, 2007
Filing Date:
November 17, 2006
Export Citation:
Assignee:
JTEKT CORP (JP)
KYODO YUSHI (JP)
KITAHATA KOUJI (JP)
KASAHARA FUMIAKI (JP)
SHIRAI YOSHIMASA (JP)
KYODO YUSHI (JP)
KITAHATA KOUJI (JP)
KASAHARA FUMIAKI (JP)
SHIRAI YOSHIMASA (JP)
International Classes:
C10M169/02; B62D5/04; C10M115/10; C10M117/02; C10M125/04; C10M143/00; C10M145/20; C10M147/02; C10M149/12; C10M149/18; F16H57/04; C10M149/14; C10N10/02; C10N10/04; C10N10/06; C10N20/00; C10N20/06; C10N30/00; C10N40/04; C10N50/10
Domestic Patent References:
WO2005090529A1 | 2005-09-29 |
Foreign References:
JPH11228983A | 1999-08-24 | |||
JPH01271493A | 1989-10-30 | |||
JPH11152490A | 1999-06-08 | |||
JPS5342203A | 1978-04-17 |
Other References:
See also references of EP 1953212A4
Attorney, Agent or Firm:
INAOKA, Kosaku et al. (Sun Mullion NBF Tower 21st Floor, 6-12, Minamihommachi 2-chome, Chuo-k, Osaka-shi Osaka 54, JP)
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