US PATENT SUBCLASS 184 / 59
.~.~.~.~.~ Vented

Current as of: June, 1999
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184 /   HD   LUBRICATION

14  DF  LUBRICATORS {18}
*  DD  .~ Force feed {5}
*  DD  .~.~ Fluid-operated {4}
55.1  DF  .~.~.~ Displacement by air or steam {3}
58  DF  .~.~.~.~ Suction {1}
59.~.~.~.~.~ Vented

DEFINITION

Classification: 184/59

Force-feed, fluid-operated suction lubricators having an opening of some kind which permits the air to come into the receptacle, the pressure of the air assisting the suction.