US PATENT SUBCLASS 60 / 542
.~.~.~ Pneumatic device having pulse air bleed or supply means

Current as of: June, 1999
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60 /   HD   POWER PLANTS

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
533  DF  .~ Pulsator {25}
537  DF  .~.~ Programmed, self-cycled or self-pulsed {7}
542.~.~.~ Pneumatic device having pulse air bleed or supply means

DEFINITION

Classification: 60/542

(under subclass 537) Apparatus in which the pulsator fluid is air and having structure by which air is fed to or removed from the system.

SEE OR SEARCH CLASS

173, Tool Driving or Impacting,

116, for an impacting device driven by a pulsator.