US PATENT SUBCLASS 137 / 246.15
.~.~ Screw feed


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

Internet Version by PATENTEC © 1999      Terms of Use



137 /   HD   FLUID HANDLING

237  DF  WITH CLEANER, LUBRICATION ADDED TO FLUID OR LIQUID SEALING AT VALVE INTERFACE {2}
246  DF  .~ Liquid supplied at valve interface {8}
246.15.~.~ Screw feed {3}
246.16  DF  .~.~.~> With check valve {2}
246.19  DF  .~.~.~> Jacking
246.2  DF  .~.~.~> Seating


DEFINITION

Classification: 137/246.15

(under subclass 246) Valves having a screw means (e.g., screw fed plunger) for feeding the fluid.