Including specific cover or shield for exterior vent opening:
(under subclass 254) Subject matter wherein particular significance is attributed to a means positioned over an outdoor aperture of an air passage leading to a (ventilated) space so as to protect the air passage.
(1) Note. The means usually acts to protect the passage from rain or outside debris.
(2) Note. A cover or shield not inherent to the structure of the ventilating means (e.g., a building roof overhang) is not included under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
4+, for a cap closure for a chimney or stacktop.
94, for a railcar, bus, or trailer having an exterior cap closure for a vent.
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.
