US PATENT SUBCLASS 417 / 101
.~.~ Piston level responsive control for cyclic operation

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}
101.~.~ Piston level responsive control for cyclic operation {1}
102  DF  .~.~.~> Plural chambers

DEFINITION

Classification: 417/101

(under subclass 92) Apparatus in which relative height of the surface of the body of liquid in said chamber cyclically operates a valve or other control means to effect cyclic pumping.