US PATENT SUBCLASS 141 / 43
.~.~.~.~.~ Vacuum line vented to atmosphere

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

37  DF  DIVERSE FLUID CONTAINING PRESSURE FILLING SYSTEMS INVOLVING RECEIVER GAS CONTENT MODIFICATION {11}
39  DF  .~ Filling means controlled by gas condition in receiver {1}
40  DF  .~.~ Control by level in filled receiver {1}
41  DF  .~.~.~ Air pump external to flow line {1}
42  DF  .~.~.~.~ Float controlled vacuum line cut-off {1}
43.~.~.~.~.~ Vacuum line vented to atmosphere

DEFINITION

Classification: 141/43

(under subclass 42) Apparatus in which the negative pressure supply means is effectively removed by opening the negative pressure to the ambient air.