US PATENT SUBCLASS 83 / 639.4
.~.~.~ Explosive fluid

Current as of: June, 1999
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83 /   HD   CUTTING

523  DF  MEANS TO DRIVE OR TO GUIDE TOOL {35}
613  DF  .~ With simple rectilinear reciprocating motion only {13}
639.1  DF  .~.~ Fluid pressure actuated {5}
639.4.~.~.~ Explosive fluid

DEFINITION

Classification: 83/639.4

Explosive fluid:

(under subclass 639.1) Apparatus wherein the cutting blade is caused to move in a cutting stroke by an expansible chamber motor by the action of fluid therein, that has been caused to burn and thereby expand and drive the movable portion of the motor to carry the blade.