Title:
MOTOR-DRIVEN IMPACT TOOL
Document Type and Number:
Japanese Patent JP2002127044
Kind Code:
A
Abstract:
To prolong service life by restraining increase of an internal pressure, in a motor-driven impact tool provided with an impact mechanism and a speed reduction mechanism driven by a motor.
The impact mechanism and the speed reduction mechanism are partitioned by a inner wall 20b provided with a bearing, and a housing 1 is provided with an air vent 20a which makes the speed reduction mechanism communicate with an outside air.
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Inventors:
KOTADO SEIICHI
WATANABE YOSHIHIKO
WATANABE YOSHIHIKO
Application Number:
JP2000320388A
Publication Date:
May 08, 2002
Filing Date:
October 20, 2000
Export Citation:
Assignee:
HITACHI KOKI KK
International Classes:
B25D11/12; B23B45/16; B25F5/00; (IPC1-7): B25D11/12; B23B45/16; B25F5/00