US PATENT SUBCLASS 251 / 4
TUBE COMPRESSORS

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

4TUBE COMPRESSORS {4}
5  DF  .~> Fluid pressure actuated
6  DF  .~> Roller tube contacting element
7  DF  .~> Perpendicularly reciprocating tube contacting element {1}
9  DF  .~> Pivoting tube contacting element {1}

DEFINITION

Classification: 251/4

(under the class definition) Devices which control flow by compression of a flexible fluid conveying tube.

SEE OR SEARCH CLASS

24, Buckles, Buttons, Clasps, etc.,

129+, to 136+ for similar structures for clamping or holding cords or ropes, and subclasses 243+ for clasps of general utility.

81, Tools,

300+, for pliers and subclasses 53+ for wrenches. 137, Fluid Handling,

355.18+, for tube compressors combined with hose storage or retrieval means.