US PATENT SUBCLASS 251 / 274
.~.~ Encased

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

Internet Version by PATENTEC © 1999      Terms of Use


251 /   HD   VALVES AND VALVE ACTUATION

213  DF  MECHANICAL MOVEMENT ACTUATOR {10}
264  DF  .~ Screw {5}
274.~.~ Encased {1}
275  DF  .~.~.~> Biased {1}

DEFINITION

Classification: 251/274

(under subclass 264) Devices in which the screw elements are completely enclosed within the valve body.