Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
MOLD COMMUTATOR, ITS MANUFACTURING METHOD, AND MOTOR USING THEM
Document Type and Number:
WIPO Patent Application WO/2008/047696
Kind Code:
A1
Abstract:
Provided is a mold commutator comprising commutator members (1), cylindrical varistor pins (20) press-fitted between the adjoining commutator members, and a mold member (3) for molding the commutator members (1) and the varistor pins (20) integrally to form the mold commutator. The varistor pins (20) absorb the spark voltages between the commutator members thereby to improve the brush lifetime.

Inventors:
MIZUKAMI HIROFUMI
MAEDA NORITERU
Application Number:
PCT/JP2007/069917
Publication Date:
April 24, 2008
Filing Date:
October 12, 2007
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
MIZUKAMI HIROFUMI
MAEDA NORITERU
International Classes:
H02K13/00; H01R39/04
Foreign References:
JPH08237913A1996-09-13
JPH02151243A1990-06-11
JP2005129651A2005-05-19
JPH0538544A1993-02-19
JPH06204006A1994-07-22
Attorney, Agent or Firm:
IWAHASHI, Fumio et al. (1006, Oaza Kadom, Kadoma-shi Osaka 01, JP)
Download PDF: