.~ Including means to influence movement of gas within enclosure {4}
480
.~.~ By movable damper
DEFINITION
Classification: 99/480
(under subclass 473) Device including a movable member which, by relative movement with respect to a chamber aperture, will permit an increased or decreased rate of flow of gases to enter or leave, the chamber.
SEE OR SEARCH CLASS
110, Furnaces,
163, for a damper of that class (110) type.
126, Stoves and Furnaces,
285+, for dampers in a stove or furnace.
454, Ventilation, 49+, and 173+ for ventilating devices, many of which include dampers; and, see the search notes thereunder.
