Tool driving or impacting – Processes
Reexamination Certificate
2005-04-26
2005-04-26
Huynh, Louis (Department: 3721)
Tool driving or impacting
Processes
C173S090000
Reexamination Certificate
active
06883617
ABSTRACT:
An automatic shutoff mechanism is designed for a pneumatic tool having an air motor, a pressurized airflow path to the motor and a torquing mechanism driven by the motor. The shutoff mechanism includes a valve member moveable between open and closed positions relative to the airflow path and biased to the open position. A trip apparatus is responsive to application of a predetermined torque for moving the valve member to a trip position disposed in the airflow path sufficiently to expose the valve member to the pressurized airflow for driving the valve member from the trip position to the closed position. Mechanical and electromechanical embodiments are disclosed.
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Chicago Pneumatic Tool Company—Catalog page for CP2700 Series Shut-Off Pulse Nut Runners (1992).
Gardner-Denver Manual p. 8 (prior to 2002).
Drawing (2 sheets) for Snap-on PH2050 Air Hammer (prior to 2000).
Atlas-Copco Catalog page for ErgoPulse PT-TRIM nutrunners with auto shut-off (prior to 2002).
Iwinski Dean J.
Lionberg Daniel D.
Pusateri Daniel S.
Putney Gordon A.
Chukwurah Nathaniel
Huynh Louis
Seyfarth Shaw LLP
Snap-on Incorporated
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