US PATENT SUBCLASS 141 / 117
.~.~ Expanding chamber in disengaged head

Current as of: June, 1999
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141 /   HD   FLUENT MATERIAL HANDLING, WITH RECEIVER OR RECEIVER COACTING MEANS

115  DF  DRIP PREVENTION BY FLOW REVERSING AND/OR OVERFILL REMOVAL {3}
116  DF  .~ By means reversing direction of flow {4}
117.~.~ Expanding chamber in disengaged head

DEFINITION

Classification: 141/117

(under subclass 116) Apparatus in which the means reversing direction of flow includes a volume increasing means for such purpose carried by the filling means and operative upon disconnection from the receiver.

(1) Note. The referred to head is of telescoping or equivalent-type chamber and becomes compressed when engaged with the receiver. Disengaging the head and receiver permits the head to expand and act as a vacuum pump.

SEE OR SEARCH THIS CLASS, SUBCLASS:

60, for a vacuum pump means comprising a receiver coupling portion of the system.