US PATENT SUBCLASS 251 / 63.5
.~.~ Coaxial actuator, seat and valve

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

12  DF  FLUID ACTUATED OR RETARDED {12}
62  DF  .~ Piston type expansible chamber reciprocating valve actuator {3}
63.5.~.~ Coaxial actuator, seat and valve {1}
63.6  DF  .~.~.~> Coaxial spring biasing means between valve and actuator

DEFINITION

Classification: 251/63.5

(under subclass 62) Subject matter in which the movable control member, the seat or port for such member, the cylinder of the expansible chamber device and the piston relatively movable therein are positioned and aligned along the same axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

61.2, for a valve having a coaxial valve actuator comprising a flexible wall expansible chamber device.