US PATENT SUBCLASS 184 / 33
.~.~.~ Rotary piston and valve

Current as of: June, 1999
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184 /   HD   LUBRICATION

14  DF  LUBRICATORS {18}
*  DD  .~ Force feed {5}
26  DF  .~.~ Pumps {10}
33.~.~.~ Rotary piston and valve

DEFINITION

Classification: 184/33

(under subclass 35) The pump is mounted upon the valve and both rotate together. In action it is like ..., hereinafter defined.