Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
POWER TOOL
Document Type and Number:
Japanese Patent JP2010012587
Kind Code:
A
Abstract:

To provide a power tool having a tool body in which it is determined whether a tightening as specified is performed by detecting a tightening torque, and in which the data on the determination is stored.

This power tool has: a motor 3 of brushless DC system; rotation control circuits 7a, 7b for controlling the rotation of the motor 3; an impact unit driven by the motor 3; and an output shaft which is connected to the shaft of the impact unit and to which an end tool is attached. The power tool further has a torque sensor 12 for detecting the occurrence of impact torque and a microcomputer 60 for controlling the tightening of the end tool using the output of the torque detection means 12. The microcomputer 60 stores the tightening data in a portable memory card 81 for each tightening.


Inventors:
TAKANO NOBUHIRO
IIMURA YOSHIO
IWATA KAZUTAKA
NISHIKAWA TOMOMASA
YOSHIMIZU TOMOMI
Application Number:
JP2008177172A
Publication Date:
January 21, 2010
Filing Date:
July 07, 2008
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HITACHI KOKI KK
International Classes:
B25B21/02; B25B23/14
Domestic Patent References:
JP2006289535A2006-10-26
JP2005238418A2005-09-08
JP2006224208A2006-08-31
JP2004015986A2004-01-15
JP2005238418A2005-09-08
JP2006224208A2006-08-31
JP2001121442A2001-05-08
JPH09285973A1997-11-04
JPH1015844A1998-01-20
JP2005351683A2005-12-22
JP2006289535A2006-10-26
Foreign References:
WO2006089925A12006-08-31
Attorney, Agent or Firm:
Shinichi Kakubo
Mikio Nakabayashi



 
Previous Patent: WORKING TOOL

Next Patent: SILENCER OF PNEUMATIC IMPACT MACHINE