Electric rotating machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 26, 1997
Grant Date -
N/A
app pub date -
Nov 28, 1995
filing date -
Feb 7, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electric rotating machine includes a guide groove in a brush holder fixedly disposed sideways of a commutator, a coil spring mounted under compression between a closed outer end of the guide groove and a brush for exhibiting a spring force to bring an end of the brush projected from the guide groove into sliding contact with the commutator, and a cover mounted to the brush holder to cover the guide groove. The guide groove is provided at its closed outer end with a recess for receiving and holding one end of the coil spring. The brush holder includes a main holder portion having the guide groove, and a fastening portion connected to one side of the main holder portion and having a single threaded bore. The cover is of a shape to cover the brush holder and has an engage portion engages an outer side of the brush holder so as to inhibit the turning of the cover about the axis of the threaded bore. A threaded member is inserted through the cover and screwed in the threaded bore. During screwing of the threaded member, the cover can not be turned along with the threaded member, thereby facilitating the mounting of the cover to the brush holder.
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