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Title:
LAMINATED BRUSH
Document Type and Number:
Japanese Patent JP2004242383
Kind Code:
A
Abstract:

To provide a laminated brush, capable of realizing excellent durability by preventing degradation of motor performance without using any harmful substance, such as lead, and by restraining wear to the brush due to mechanical or electrical sparks.

This laminated brush, which has copper and graphite as its main constituent and consists of two brush segments: a high copper percentage portion, having high copper contents containing solid lubricant and a low copper percentage portion, having low copper contents, contains zinc of at least 0.1 to 5 wt% in the high copper percentage brush segment and is structured with zinc and copper forming an alloy.


Inventors:
KOBAYASHI TERUO
KAWAMURA HIROAKI
YAMASHITA NOBUYUKI
INUKAI KYOJI
MURAKAMI YOICHI
NIIMI MASAMI
WAKAHARA YASUYUKI
Application Number:
JP2003026608A
Publication Date:
August 26, 2004
Filing Date:
February 04, 2003
Export Citation:
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Assignee:
HITACHI CHEMICAL CO LTD
DENSO CORP
International Classes:
C22C9/04; C22C9/05; C22C9/06; H01R39/20; H01R39/22; H01R39/24; H01R39/26; H01R43/12; H02K13/00; C22C1/10; (IPC1-7): H02K13/00; C22C1/10; C22C9/04; C22C9/05; C22C9/06; H01R39/20; H01R39/24; H01R39/26
Attorney, Agent or Firm:
Yukihiko Takada