US PATENT SUBCLASS 454 / 322
.~.~ With adjustable valve

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.~.~ With adjustable valve {4}
323  DF  .~.~.~> Axially movable
324  DF  .~.~.~> Sliding
325  DF  .~.~.~> Plural blades pivoting along parrallel axes {1}
327  DF  .~.~.~> Valve opens by pivoting in upstream direction

DEFINITION

Classification: 454/322

With adjustable valve:

(under subclass 284) Subject matter which includes, in addition to the air directing means, a positively repositionable means for regulating the airflow quantity.

SEE OR SEARCH THIS CLASS, SUBCLASS:

273+, for an inlet airway including an independent vent sleeve in a ceiling, wall, or floor which contains an adjustable valve.

307, for an adjustable air distributing valve comprising an air deflecting wall extending into a ventilated space.

318, for an air distributor having movable louver vanes which form an adjustable valve.

333+, for an inlet airway adjustable valve not associated with a means for guiding inlet air immediately into the ventilated space.