US PATENT SUBCLASS 417 / 93
.~.~ Moving contracting chamber

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}
92  DF  .~ Liquid piston {6}
93.~.~ Moving contracting chamber {5}
94  DF  .~.~.~> Helical chamber
95  DF  .~.~.~> Movement of chamber cyclically controls flow of liquid into chamber for cyclic operation
96  DF  .~.~.~> Liquid supporting chambers move liquid to pump fluid
97  DF  .~.~.~> Relatively movable chambers
98  DF  .~.~.~> Reciprocating

DEFINITION

Classification: 417/93

(under subclass 92) Apparatus in which at least one wall of said chamber means is moved relative to a surface of said body of liquid to change the volume of said chamber and thus pressurize the fluid confined therein.