US PATENT SUBCLASS 72 / 453.09
.~.~.~.~ Pull-down press

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}
453.06  DF  .~.~.~ Pressure additive {3}
453.09.~.~.~.~ Pull-down press

DEFINITION

Classification: 72/453.09

Pull-down press:

(under subclass 453.06) Apparatus including a tool supporting structure such that the tool is positioned above the floor that would be the general support means for the apparatus and wherein the tool-forcing means are positioned below the floor and act through connecting tie members to force the tool down toward the work and the floor in a deforming stroke.