Tool driving or impacting – Impacting devices – With anvil arranged to transmit torsional impact to tool
Reexamination Certificate
2006-04-25
2006-04-25
Smith, Scott A. (Department: 3721)
Tool driving or impacting
Impacting devices
With anvil arranged to transmit torsional impact to tool
C173S093000, C464S037000
Reexamination Certificate
active
07032685
ABSTRACT:
Disclosed is a fastening tool equipped with a rotatively hitting mechanism comprising a cylinder disposed crossing a rotary axle of an anvil shaft at a right angle, a piston mounted slidably on and engaged with the cylinder, an oil passage communicating the inside of the cylinder with the outside of the anvil shaft, a rolling member disposed rolling along an inner wall surface of a rotating liner while being pressed with an elastic member, and a projection portion formed swelling inwardly on the inner wall surface of the rotating liner so as to hit the rolling member. The rotatively hitting mechanisms are disposed in plural numbers and at plural stages in a manner concentrically to each other, and the plural rotatively hitting mechanisms are disposed in a position relationship rotationally symmetrical to each other. An exhaust opening is disposed at a location nearby a body portion of the rotatively hitting mechanism.
REFERENCES:
patent: 2636583 (1953-04-01), Whitledge
patent: 3195702 (1965-07-01), Alexander
patent: 3292391 (1966-12-01), Kramer et al.
patent: 4557337 (1985-12-01), Shibata
patent: 4967852 (1990-11-01), Tatsuno
patent: 5092410 (1992-03-01), Wallace et al.
patent: 5217079 (1993-06-01), Kettner et al.
patent: 5544710 (1996-08-01), Groshans et al.
patent: 5704434 (1998-01-01), Schoeps
patent: 5775999 (1998-07-01), Hansson et al.
patent: 6179063 (2001-01-01), Borries et al.
patent: 6334494 (2002-01-01), Nagato
patent: 6666283 (2003-12-01), Frauhammer et al.
patent: 5-253857 (1993-10-01), None
patent: 9-174449 (1997-07-01), None
patent: 10-244472 (1998-09-01), None
Jordan and Hamburg LLP
Smith Scott A.
Toku Pneumatic Tool MFG. Co., Ltd.
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