US PATENT SUBCLASS 251 / 7
.~ Perpendicularly reciprocating tube contacting element

Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

4  DF  TUBE COMPRESSORS {4}
7.~ Perpendicularly reciprocating tube contacting element {1}
8  DF  .~.~> Screw actuated

DEFINITION

Classification: 251/7

(under subclass 4) Devices comprising a tube contacting portion which reciprocates perpendicularly of the axis of the flexible conveyor.