US PATENT SUBCLASS 72 / 435
.~ Mechanical potential-energy drive means only

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

429  DF  WITH MEANS TO DRIVE TOOL {11}
435.~ Mechanical potential-energy drive means only {2}
436  DF  .~.~> With means to check energy for subsequent release
437  DF  .~.~> Wherein energy is stored by retraction of tool {3}

DEFINITION

Classification: 72/435

Mechanical potential energy drive means only:

(under subclass 429) Apparatus wherein the tool-moving means includes mechanism for converting latent power into developed power to drive the tool.

(1) Note. Potential-energy resulting from gravitational attraction is the usual source of energy, but a spring interconnecting a tool with a tool-housing is also a source of energy in some disclosures of this subclass.

SEE OR SEARCH CLASS

83, Cutting,

582+, for disclosure of constantly urged means for driving a cutting tool.