US PATENT SUBCLASS 222 / 621
.~.~.~.~ Fluid pump

Current as of: June, 1999
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222 /   HD   DISPENSING

173  DF  WITH CASING OR SUPPORT {11}
608  DF  .~ Ambulant {6}
613  DF  .~.~ Dispensing means driven or controlled by surface contact {9}
620  DF  .~.~.~ Rotary motion of ground wheel to reciprocating, oscillating, or linear motion {1}
621.~.~.~.~ Fluid pump

DEFINITION

Classification: 222/621

Fluid pump:

(under subclass 620) Device in which the reciprocating, oscillating, or linear motion derived from the ground wheel is employed to actuate a means to transport or compress a fluent material.