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


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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.