US PATENT SUBCLASS 72 / 453.01
.~ Including pneumatic- or fluid-actuated tool support

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

429  DF  WITH MEANS TO DRIVE TOOL {11}
453.01.~ Including pneumatic- or fluid-actuated tool support {7}
453.02  DF  .~.~> Multiple or staged drive means {3}
453.1  DF  .~.~> Utilizing stored energy {1}
453.12  DF  .~.~> Pull-down press
453.13  DF  .~.~> Including fluid cushion for die opposite to ram
453.14  DF  .~.~> With ram or tool support aligning means
453.15  DF  .~.~> Randomly manipulated or work-supported tool {1}
453.18  DF  .~.~> Having hydraulic or pneumatic return {1}

DEFINITION

Classification: 72/453.01

Including pneumatic- or fluid-actuated tool support:

(under subclass 429) Apparatus including means to force the tool (or an element that carries the tool and partakes of all its movement) to move toward the work and perform a desired deforming operation by use of a fluent of liquid medium under pressure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

54+, for a pressurized-fluid means engaging and deforming work.

432, for fluid means in a yieldable connection.

481.2, for a pneumatic- or fluid- actuated means to reposition or retain a tool face with respect to the tool support or holder.

481.3, for a threaded means to move or hold a tool face with respect to its support or holder.

SEE OR SEARCH CLASS

83, Cutting, 639.1+, for a fluid pressure-actuated driver for a cutting tool.

100, Presses,

269.01+, for a fluid pressure actuated reciprocating press construction