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Patent Searching and Data


Title:
CARBON BRUSH FOR ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2002/001681
Kind Code:
A1
Abstract:
A carbon brush for an electric machine which comprises a carbon brush substrate containing a solid lubricant such as molybdenum disulfide, tungsten disulfide or the like and a grinding material such as alumina, silica, silicon carbide or the like and, formed on the whole surface thereof except that of the portion contacting with a commutator, a well conductive metal coating film; and the above carbon brush wherein the well conductive metal coating film is not formed and the carbon brush substrate is exposed in a part or the whole of at least one surface of the side planes perpendicular to the direction of rotation of the commutator.

Inventors:
TAKAHASHI KAZUHIRO (JP)
TAKUMA MASAYUKI (JP)
KURODA KOJI (JP)
Application Number:
PCT/JP2001/005162
Publication Date:
January 03, 2002
Filing Date:
June 15, 2001
Export Citation:
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Assignee:
TOTANKAKO CO LTD (JP)
TAKAHASHI KAZUHIRO (JP)
TAKUMA MASAYUKI (JP)
KURODA KOJI (JP)
International Classes:
H01R39/26; (IPC1-7): H01R39/26; H02K13/00
Foreign References:
JP2000197315A2000-07-14
JPH06165442A1994-06-10
JPH06189505A1994-07-08
JPH06335206A1994-12-02
JPH08223869A1996-08-30
JPH08242559A1996-09-17
JPH0622506A1994-01-28
JPH09215275A1997-08-15
JPH05182733A1993-07-23
DE2510874A11976-09-30
JPH0622506A1994-01-28
DE29905433U11999-06-10
Other References:
See also references of EP 1315254A4
Attorney, Agent or Firm:
Kaji, Yoshiyuki (Nishinakajima 5-chome Yodogawa-ku Osaka-shi Osaka, JP)
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