US PATENT SUBCLASS 74 / 167
.~.~.~ Driving ratchet-bar or rack

Current as of: June, 1999
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74 /   HD   MACHINE ELEMENT OR MECHANISM

111  DF  MECHANICAL MOVEMENTS (INTERMITTENT GRIP TYPE) {3}
144  DF  .~ Grip units and features {5}
162  DF  .~.~ Grip features {4}
167.~.~.~ Driving ratchet-bar or rack {1}
168  DF  .~.~.~.~> Multiple acting

DEFINITION

Classification: 74/167

(under subclass 162) Devices, in which the power imparting element is in the form of a ratchet bar or rack.