US PATENT SUBCLASS 417 / 120
.~.~ With condition responsive control of motive fluid vacuum or pressure generating means

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}
120.~.~ With condition responsive control of motive fluid vacuum or pressure generating means

DEFINITION

Classification: 417/120

(under subclass 118) Apparatus having pump means for said motive fluid, and including condition responsive control means to directly control said pump means.