US PATENT SUBCLASS 188 / 322.15
.~.~ Piston valve detail (e.g., seat design, structural arrangement, metering element)

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

Internet Version by PATENTEC © 1999      Terms of Use


188 /   HD   BRAKES

266  DF  INTERNAL-RESISTANCE MOTION RETARDER {29}
322.13  DF  .~ Valve structure or location {2}
322.15.~.~ Piston valve detail (e.g., seat design, structural arrangement, metering element)

DEFINITION

Classification: 188/322.15

Piston valve:

(under subclass 322.13) Device wherein the container includes a cylindrical chamber having a piston which reciprocates within the chamber, the flow-regulating element or assembly mounted on or in the piston to regulate fluid flow through an aperture in the piston.