US PATENT SUBCLASS 137 / 478
.~.~.~.~ Screw threaded

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

455  DF  LINE CONDITION CHANGE RESPONSIVE VALVES {11}
469  DF  .~ Pop valves {5}
475  DF  .~.~ Adjustable choke {1}
476  DF  .~.~.~ Annular lip or baffle {2}
478.~.~.~.~ Screw threaded

DEFINITION

Classification: 137/478

(under subclass 476) Valves in which the annular adjustable lip is screw threaded for axial adjustment along the valve inlet passage.