US PATENT SUBCLASS 417 / 111
.~.~.~ Plural serially actuated valves

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}
108  DF  .~ Aerated column {1}
109  DF  .~.~ Valved gas inlet {7}
111.~.~.~ Plural serially actuated valves

DEFINITION

Classification: 417/111

(under subclass 109) Apparatus wherein said valve means comprises plural valves mounted at vertically spaced levels along said vertical column, and having common mechanical or electrical actuating means to actuate or permit the actuation of the valves in a particular sequence.