Title:
CARBON BRUSH
Document Type and Number:
WIPO Patent Application WO/2011/118756
Kind Code:
A1
Abstract:
Provided is a carbon brush such that it is possible to improve motor efficiency and to achieve a prolonged service life. Disclosed is a carbon brush (1) which is pressed against a conductive rotating body (2) and which is characterized by containing mesocarbon powder and an aggregate containing at least carbon as one component. Preferably, the mesocarbon powder has a roughly spherical shape, and is subjected to pre-heating treatment. Moreover, the temperature for the pre-heating treatment is preferably 500°C to 700°C inclusive.
Inventors:
KAGAWA YOSHIKAZU (JP)
MAEDA TAKASHI (JP)
FUJIMURA TAKUJI (JP)
SHIRAKAWA HIDENORI (JP)
MAEDA TAKASHI (JP)
FUJIMURA TAKUJI (JP)
SHIRAKAWA HIDENORI (JP)
Application Number:
PCT/JP2011/057308
Publication Date:
September 29, 2011
Filing Date:
March 25, 2011
Export Citation:
Assignee:
TOYO TANSO CO (JP)
KAGAWA YOSHIKAZU (JP)
MAEDA TAKASHI (JP)
FUJIMURA TAKUJI (JP)
SHIRAKAWA HIDENORI (JP)
KAGAWA YOSHIKAZU (JP)
MAEDA TAKASHI (JP)
FUJIMURA TAKUJI (JP)
SHIRAKAWA HIDENORI (JP)
International Classes:
H02K13/00; H01R39/26
Foreign References:
| JP2003347006A | 2003-12-05 | |||
| JPS63139051A | 1988-06-10 |
Other References:
None
See also references of EP 2555391A4
See also references of EP 2555391A4
Attorney, Agent or Firm:
KITADAI, Tetsuo et al. (JP)
Tetsuo Kitadai (JP)
Tetsuo Kitadai (JP)
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Claims: