.~ Having air passage between sill and bottom of sash {5}
222
.~.~ Including readily moveable air regulating means
DEFINITION
Classification: 454/222
Including readily moveable air regulating means:
(under subclass 214) Subject matter comprising easily shiftable means to increase or decrease flow of the air.
(1) Note. A shiftable internal body such as a damper is included in this subclass.
(2) Note. Readily moveable air regulating means does not include a mere sliding or pivoting window frame or sash.
SEE OR SEARCH THIS CLASS, SUBCLASS:
217, for an air passage between a window sill and sash bottom including an adjustable angle wall for upwardly deflecting inlet air.
219, for an air passage between a window sill and sash bottom including a wall for upwardly deflecting inlet air and a readily moveable air regulating means.
221, for a device comprising parallel or concentric air guiding slats which pivot.
