US PATENT SUBCLASS 83 / 639.3
.~.~.~ Diaphragm

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}
639.3.~.~.~ Diaphragm

DEFINITION

Classification: 83/639.3

Diaphragm:

(under subclass 639.1) Apparatus wherein the cutting blade is caused to move in a cutting stroke by an expansible chamber motor having a flexible portion that moves to carry the cutting blade.