US PATENT SUBCLASS 454 / 323
.~.~.~ Axially movable

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

Internet Version by PATENTEC © 1999      Terms of Use


454 /   HD   VENTILATION

254  DF  HAVING INLET AIRWAY {11}
284  DF  .~ Including specific air distributor (e.g., register, etc.) {14}
322  DF  .~.~ With adjustable valve {4}
323.~.~.~ Axially movable

DEFINITION

Classification: 454/323

Axially movable:

(under subclass 322) Subject matter wherein the positively repositionable airflow regulating means relocates along a path parallel to a general direction of airflow immediately prior to its contact with the means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

274, for an independent vent sleeve in a ceiling, wall, or floor which contains an axially movable valve.