US PATENT SUBCLASS 72 / 453.05
.~.~.~ Displacement additive

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}
453.05.~.~.~ Displacement additive

DEFINITION

Classification: 72/453.05

Displacement additive:

(under subclass 453.02) Apparatus wherein one of the means forcing the tool toward the work tranmits movement to the other forcing means so that the amount of tool movement is dependent on the total movement of the two means.