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1. (US20120279736) Impact tool

Office : United States of America
Application Number: 13387741 Application Date: 29.07.2010
Publication Number: 20120279736 Publication Date: 08.11.2012
Grant Number: 09314908 Grant Date: 19.04.2016
Publication Kind : B2
Prior PCT appl.: Application Number:PCTJP2010063235 ; Publication Number: Click to see the data
IPC:
B25B 21/00
B25B 21/02
B25D 11/00
B25B 23/147
B PERFORMING OPERATIONS; TRANSPORTING
25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; HANDLES FOR HAND IMPLEMENTS; WORKSHOP EQUIPMENT; MANIPULATORS
B
TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
21
Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
B PERFORMING OPERATIONS; TRANSPORTING
25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; HANDLES FOR HAND IMPLEMENTS; WORKSHOP EQUIPMENT; MANIPULATORS
B
TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
21
Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
02
with means for imparting impact to screwdriver blade or nut socket
B PERFORMING OPERATIONS; TRANSPORTING
25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; HANDLES FOR HAND IMPLEMENTS; WORKSHOP EQUIPMENT; MANIPULATORS
D
PERCUSSIVE TOOLS
11
Portable percussive tools with electromotor drive
B PERFORMING OPERATIONS; TRANSPORTING
25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; HANDLES FOR HAND IMPLEMENTS; WORKSHOP EQUIPMENT; MANIPULATORS
B
TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
23
Details of, or accessories for, spanners, wrenches, screwdrivers
14
Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
147
specially adapted for electrically operated wrenches or screwdrivers
Applicants: Hideyuki Tanimoto
HITACHI KOKI CO., LTD.
Nobuhiro Takano
Tomomasa Nishikawa
Kazutaka Iwata
Hironori Mashiko
Hayato Yamaguchi
Atsushi Nakagawa
Katsuhiro Oomori
Mizuho Nakamura
Hiroki Uchida
Saroma Nakano
Yutaka Ito
Inventors: Hideyuki Tanimoto
Nobuhiro Takano
Tomomasa Nishikawa
Kazutaka Iwata
Hironori Mashiko
Hayato Yamaguchi
Atsushi Nakagawa
Katsuhiro Oomori
Mizuho Nakamura
Hiroki Uchida
Saroma Nakano
Yutaka Ito
Agents: Kenealy Vaidya LLP
Priority Data: 2009-177116 29.07.2009 JP
2010-083755 31.03.2010 JP
2010-083757 31.03.2010 JP
Title: (EN) Impact tool
Abstract: front page image
(EN)

According to an aspect of the present invention, there is provided an impact tool including: a motor drivable in an intermittent driving mode; a hammer connected to the motor; an anvil to be struck by the hammer to thereby rotate/strike a tip tool; and a control unit that controls a rotation of the motor by switching a driving pulse supplied to the motor in accordance with a load applied onto the tip tool.