Tool driving or impacting – Self-acting advance and retraction cycle
Reexamination Certificate
2005-08-23
2005-08-23
Huynh, Louis K. (Department: 3721)
Tool driving or impacting
Self-acting advance and retraction cycle
C172S013000, C172S154000
Reexamination Certificate
active
06932162
ABSTRACT:
A pneumatic processing machine includes a pneumatic motor, a circuit for connecting the motor to a source of compressed air, a tool holder spindle, and a drive mechanism. The mechanism includes a selection element which can be moved to select a first method of driving the spindle and a second method of driving the spindle. A device for controlling the operation of the machine controls the carrying-out of a driving cycle which includes at least one phase for driving the spindle according to the first driving method, then a phase for driving the spindle according to the second driving method, then the stopping of the supply of air to the motor. A supply valve of the circuit is controlled mechanically by the selection element to interrupt the supply of compressed air to the motor at the end of the driving cycle.
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Bureller Michel
Pereira Santo Sébastien
Huynh Louis K.
Nathaniel Chukwurah
Recoules (S.A.)
Young & Thompson
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