US PATENT SUBCLASS 198 / 750.5
.~.~.~ Piston drive

Current as of: June, 1999
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198 /   HD   CONVEYORS: POWER-DRIVEN

618  DF  CONVEYOR SECTION {26}
750.1  DF  .~ Reciprocating conveying surface {7}
750.2  DF  .~.~ Surface formed by plural parallel elongated sections reciprocating horizontally {3}
750.5.~.~.~ Piston drive {1}
750.6  DF  .~.~.~.~> Detachable drive

DEFINITION

Classification: 198/750.5

Piston drive:

(under subclass 750.2) Subject matter wherein the horizontal movement of the plural parallel elongated sections is provided by a linearly expandable device moving back and forth under fluid pressure.