Tool driving or impacting – Drive adjustable to completely change kind of drive – Adjustable to impacting device
Reexamination Certificate
2008-01-22
2008-01-22
Smith, Scott A. (Department: 3721)
Tool driving or impacting
Drive adjustable to completely change kind of drive
Adjustable to impacting device
C173S170000, C173S201000, C173S217000, C310S050000
Reexamination Certificate
active
07320368
ABSTRACT:
The object of the invention is to ease of operation of the power impact tool. Such object is achieved by a representative power impact tool according to the invention including a motor, a tool bit, a trigger and a mode changing member. The trigger is manually operated by a user to control energization and non-energization of current to drive the motor. The motor is energized when the user operates the trigger to turn on and the energized state of the motor is maintained until the trigger is again operated in a same manner with the turning-on operation. According to the invention, once the trigger is depressed from the initial position to the operating position, a hammering operation can be performed by the striking movement of the tool bit without the need to lock the trigger in the operating position. Therefore, ease of operation of the hammer drill is enhanced.
REFERENCES:
patent: 3995703 (1976-12-01), Wanner
patent: 4085337 (1978-04-01), Moeller
patent: 5079459 (1992-01-01), Huston et al.
patent: 5165488 (1992-11-01), Liu
patent: 6043575 (2000-03-01), Ghode et al.
patent: 6487779 (2002-12-01), Underthun
patent: 6488195 (2002-12-01), White et al.
patent: 6550356 (2003-04-01), Underwood
patent: 6763897 (2004-07-01), Hanke et al.
patent: A-2001-062756 (2001-03-01), None
Makita Corporation
Oliff & Berridg,e PLC
Smith Scott A.
LandOfFree
Power impact tool does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power impact tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power impact tool will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2748972