Tool driving or impacting – Automatic control of power operated means – Drive means responsive to torque or speed condition
Reexamination Certificate
2008-01-09
2009-10-27
Truong, Thanh K (Department: 3721)
Tool driving or impacting
Automatic control of power operated means
Drive means responsive to torque or speed condition
C173S001000, C173S093000, C173S093500, C173S093600
Reexamination Certificate
active
07607492
ABSTRACT:
An electric impact tool in which a rotating mass rotates in a forward direction to impact upon and transfer torque to an anvil, and rotates in a reverse direction opposite the forward direction in response to such impact. A direction sensor monitors the direction of rotation of the rotating mass, and a controller turns an electric motor on and off during respective forward and reverse rotation of the rotating mass. An energy storing mechanism may be used to absorb energy from reverse rotation of the rotating mass and release the absorbed energy to rotate the rotating mass in the forward direction. A controller may be used to store the angular position of the rotating mass upon each impact and turn off the motor prior to the following impact to avoid energizing the motor during stall.
REFERENCES:
patent: 2256496 (1941-09-01), Girard
patent: 3552499 (1971-01-01), Maurer
patent: 3661217 (1972-05-01), Maurer
patent: 4316512 (1982-02-01), Kibblewhite et al.
patent: 5619117 (1997-04-01), Koenck
patent: 5646508 (1997-07-01), van Phuoc
patent: 5906244 (1999-05-01), Thompson et al.
patent: 6167606 (2001-01-01), Mueller et al.
patent: 6181103 (2001-01-01), Chen
patent: 6186247 (2001-02-01), Wang
patent: 6796386 (2004-09-01), Izumisawa et al.
patent: 6880645 (2005-04-01), Izumisawa
patent: 6889778 (2005-05-01), Colangelo, III et al.
patent: 6968908 (2005-11-01), Tokunaga et al.
patent: 7395871 (2008-07-01), Carrier et al.
patent: 2003/0082439 (2003-05-01), Sakakibara
patent: 2006/0185869 (2006-08-01), Arimura
patent: 2007/0000676 (2007-01-01), Arimura
patent: 2007/0152660 (2007-07-01), Simm et al.
patent: 0724935 (1996-08-01), None
patent: 2004322262 (2004-11-01), None
patent: WO 2006/044693 (2006-04-01), None
Ball, Jr. William M.
Becker Daniel J.
McClung Mark Templeton
Seith Warren Andrew
Ingersoll Rand Company
RatnerPrestia
Truong Thanh K
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