Power tool

Details Power tool Power tool

2006-08-29

2006-08-29

Smith, Scott A. (Department: 3721)

Tool driving or impacting

Impacting devices

Hammer head driven by pulsating fluid pressure

C173S048000, C173S162100

Reexamination Certificate

active

07096973

ABSTRACT:
It is an object of the invention to provide a technique for further improving the vibration reducing performance in the power tool, while avoiding complicating the construction of the power tool. According to the present invention, a representative power tool may comprise a striker, a tool bit and a vibration reducer. The vibration reducer serves to reduce vibration on the striker by reciprocating in a direction opposite to the reciprocating direction of the striker. The path of the center of gravity of the vibration reducer is arranged to coincide with a path of the center of gravity of the striker. With such construction, because rotating moment is not exerted onto the reciprocating cylinder during the operation of the power tool, vibration reduction can be performed in a stable manner.

REFERENCES:
patent: 3688848 (1972-09-01), Vick et al.
patent: 4014392 (1977-03-01), Ross
patent: 5607023 (1997-03-01), Palm
patent: 5678641 (1997-10-01), Manschitz et al.
patent: 6000310 (1999-12-01), Shilkrut et al.
patent: 2002/0185288 (2002-12-01), Hanke et al.
patent: 52-109673 (1977-09-01), None
patent: 2002254352 (2002-09-01), None
patent: 2003-11073 (2003-01-01), None

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