Tool driving or impacting – Passage in manipulating handle for drive motor motive fluid – Motive fluid control valve in handle passage
Reexamination Certificate
2007-03-19
2008-12-09
Smith, Scott A. (Department: 3721)
Tool driving or impacting
Passage in manipulating handle for drive motor motive fluid
Motive fluid control valve in handle passage
C173S093000, C173S093500, C173S221000
Reexamination Certificate
active
07461704
ABSTRACT:
The improved airflow control structure for pneumatic tools has an air inlet to receive external air, a cylinder located in a pneumatic tool and an air intake passage located between them. A valve bushing is provided to connect to the air intake passage and respectively connect a first air intake flow path and a second air intake flow path. The valve bushing holds a control bar which can alter the air intake flow path of the pneumatic tool to control the rotation of pneumatic tool in a positive direction or a reverse direction. As the valve bushing and the cylinder are integrally formed in one piece, the pneumatic tool can be adopted in a plastic housing. Through the control bar users can operate the pneumatic tool single-handed as convenient as to start, stop or regulate the pneumatic tool in positive or reverse rotations while using the same hand to hold it.
REFERENCES:
patent: 3666027 (1972-05-01), Sauerwein et al.
patent: 3833068 (1974-09-01), Hall
patent: 5918686 (1999-07-01), Izumisawa
patent: 5924497 (1999-07-01), Spooner et al.
patent: 6634438 (2003-10-01), Pusateri et al.
patent: 6883619 (2005-04-01), Huang
patent: 7311155 (2007-12-01), Chang
patent: 569885 (2004-01-01), None
Muncy Geissler Olds & Lowe, PLLC
Smith Scott A.
Sunmatch Industrial Co., Ltd.
LandOfFree
Airflow control structure for pneumatic tools does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Airflow control structure for pneumatic tools, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Airflow control structure for pneumatic tools will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4051884