US PATENT SUBCLASS 417 / 124
.~.~.~.~ Responsive to weight of pumped fluid

Current as of: June, 1999
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417 /   HD   PUMPS

65  DF  ONE FLUID PUMPED BY CONTACT OR ENTRAINMENT WITH ANOTHER {10}
118  DF  .~ Liquid pumped by supplying or exhausting gaseous motive fluid to or from pumping chamber {7}
122  DF  .~.~ Alternate pumping from plural pumping chambers {1}
123  DF  .~.~.~ Motive fluid in one chamber controlled by condition in second chamber {2}
124.~.~.~.~ Responsive to weight of pumped fluid

DEFINITION

Classification: 417/124

(under subclass 123) Apparatus wherein the condition is the weight of the fluid which is pumped which has accumulated in the first chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

140, for devices having a movably mounted means adapted to receive the fluid which is pumped and adapted to be moved in response to a quantity of fluid received to control the pumping operation.