US PATENT SUBCLASS 454 / 94
.~.~ Having exterior cap closure for vent


Current as of: June, 1999
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454 /   HD   VENTILATION

69  DF  VEHICLE (E.G., AUTOMOBILE, ETC.) {15}
83  DF  .~ Railcar, bus, or trailer {10}
94.~.~ Having exterior cap closure for vent


DEFINITION

Classification: 454/94

Having exterior cap closure for vent:

(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.