Impact tool

Details Impact tool Impact tool

2008-06-11

2010-11-16

Durand, Paul R (Department: 3721)

Tool driving or impacting

Including means to vibrationally isolate a drive means from...

C173S100000, C173S211000, C173S128000

Reexamination Certificate

active

07832498

ABSTRACT:
It is an object of the invention to provide a technique for further improving the vibration reducing performance in an impact tool. A representative impact tool includes a tool body, a cylinder housed within the tool body, a dynamic vibration reducer having a weight that linearly moves under a biasing force of an elastic element, wherein the dynamic vibration reducer reduces vibration of the tool body during hammering operation by the movement of the weight in the axial direction of the tool bit, and a mechanical vibration mechanism that actively drives the weight by applying external force other than vibration of the tool body to the weight via the elastic element. The weight and the elastic element are disposed on the axis of the tool bit and between an inner wall surface of the tool body and an outer wall surface of the cylinder in such a manner as to cover at least part of the outer wall surface of the cylinder in the circumferential direction.

REFERENCES:
patent: 2875731 (1959-03-01), Settles et al.
patent: 4279091 (1981-07-01), Edwards
patent: 4478293 (1984-10-01), Weilenmann et al.
patent: 5678641 (1997-10-01), Manschitz et al.
patent: 5775441 (1998-07-01), Sakuragi et al.
patent: 5850884 (1998-12-01), Rodger et al.
patent: 6763897 (2004-07-01), Hanke et al.
patent: 7252157 (2007-08-01), Aoki
patent: 7523791 (2009-04-01), Aoki
patent: 2006/0289185 (2006-12-01), Hahn
patent: 2007/0017684 (2007-01-01), Stirm et al.
patent: 2007/0175647 (2007-08-01), Aoki
patent: 2008/0029282 (2008-02-01), Ikuta
patent: 2009/0236113 (2009-09-01), Gumpert et al.
patent: 1382562 (2002-12-01), None
patent: 1915606 (2007-02-01), None
patent: 1 179 979 (2002-02-01), None
patent: 1 252 976 (2002-10-01), None
patent: 1 437 200 (2004-07-01), None
patent: 1 627 708 (2006-02-01), None
patent: 1 754 575 (2007-02-01), None
patent: A-08-318343 (1996-12-01), None
patent: WO 2004/082897 (2004-09-01), None
patent: WO 2005/105386 (2005-11-01), None
Mar. 22, 2010 European Search Report for European Patent Application No. 08010832.7.

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