US PATENT SUBCLASS 72 / 453.03
.~.~.~ With mechanical drive means

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

429  DF  WITH MEANS TO DRIVE TOOL {11}
453.01  DF  .~ Including pneumatic- or fluid-actuated tool support {7}
453.02  DF  .~.~ Multiple or staged drive means {3}
453.03.~.~.~ With mechanical drive means {1}
453.04  DF  .~.~.~.~> Fluid high pressure/mechanical low pressure

DEFINITION

Classification: 72/453.03

With mechanical drive means:

(under subclass 453.02) Apparatus wherein the additional means forcing the tool toward the work includes a mechanical structure, e.g., a screw, cam, lever, or hammer.