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Patent Searching and Data


Title:
ROTARY IMPACT TOOL
Document Type and Number:
WIPO Patent Application WO/2013/183535
Kind Code:
A1
Abstract:
A rotary impact tool comprising a motor, an impact mechanism, a drive unit, an impact detection unit, and a control unit. The impact mechanism comprises a hammer, an anvil, and a mounting unit. If an impact is detected by the impact detection unit, the control unit sets the motor drive force from the drive unit to a first drive force lower than the minimum drive force required to freewheel the hammer, during a preset first control time, then sets the motor drive force from the drive unit to a second drive force higher than the minimum drive force and lower than the drive force during normal operation.

Inventors:
HIRABAYASHI TOKUO (JP)
KUMAGAI RYUNOSUKE (JP)
NISHIMIYA TAKESHI (JP)
ISHIKAWA GOSHI (JP)
KUSAKAWA TAKUYA (JP)
Application Number:
PCT/JP2013/065025
Publication Date:
December 12, 2013
Filing Date:
May 30, 2013
Export Citation:
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Assignee:
MAKITA CORP (JP)
International Classes:
B25B21/02
Foreign References:
JP2012030326A2012-02-16
JP2011189413A2011-09-29
JP2009072888A2009-04-09
Attorney, Agent or Firm:
NAGOYA INTERNATIONAL PATENT FIRM (JP)
Nagoya international patent business corporation (JP)
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