US PATENT SUBCLASS 417 / 131
.~.~.~.~ With control of motive fluid outlet

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
126  DF  .~.~ With float actuated control means {5}
130  DF  .~.~.~ Control of motive fluid inlet (e.g., atmosphere, etc.) {1}
131.~.~.~.~ With control of motive fluid outlet {2}
132  DF  .~.~.~.~.~> With control of pumped fluid outlet
133  DF  .~.~.~.~.~> With overcenter valve actuator means

DEFINITION

Classification: 417/131

(under subclass 130) Apparatus wherein said buoyed means also controls the exhausting of the motive fluid from the pumping chamber.

(1) Note. Apparatus having means to control the flow of working fluid from the pumping chamber to a vacuum source are classified in this and indented subclasses.