(under subclass 83) Subject matter comprising an outside aperture which leads to the ventilated space and further comprising a structure which swings, slides, rotates, or otherwise moves between a first position permitting airflow through the aperture and a second position covering the aperture and preventing airflow therethrough.
(1) Note. Pivoting and sliding roof vents are included in this subclass.
(2) Note. A damper door placed within an air passage connecting the ventilated space with atmosphere is not included in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
4+, for a cap closure for a chimney or stacktop.
129, for a vehicle sunroof.
275, for an inlet airway having a specific cover or shield for an exterior vent opening.
347+, for an outlet airway having an air pump and which may include a readily moveable cover. 355, for an outlet airway having an air pump and including a moveable access cover.
356, for an outlet airway having an air pump and including an exterior neck with an enlarged, weather resistant cover.
358+, for other outlet airways which may include a readily moveable cover.
367+, for other outlet airways with a specific cover or shield for an exterior vent opening.
