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Class Information
Number: 454/274
Name: Ventilation > Having inlet airway > Sleeved vent for ceiling, wall, or floor (e.g., thimble) > Wall type > Having adjustable valve > Sliding or axially moveable
Description: Subject matter wherein the regulating means (1) relocates along a path parallel to a general direction of airflow immediately prior to its contact with the means or (2) comprises a portion which translates along another portion of the means.

Patents under this class:

Patent Number Title Of Patent Date Issued
7874287 Air intake apparatus Jan. 25, 2011
7780509 Quick-install foundation vent Aug. 24, 2010
7540169 Cold air supply and control device for refrigerator Jun. 2, 2009
7491120 Trickle vent Feb. 17, 2009
7357709 Metal vent Apr. 15, 2008
7232369 System and method for providing heating, ventilation and air conditioning Jun. 19, 2007
7189158 Airflow control system Mar. 13, 2007
7166024 Ventilation member and vented housing using the same Jan. 23, 2007
6895719 Floor-mounted disposable system with moveable dust loosening rib insert May. 24, 2005
6302785 Foundation vent with improved net free ventilation area Oct. 16, 2001
6042475 Method and apparatus for controlling temperature and ventilation in an animal confinement building Mar. 28, 2000
5685290 Combustion air kit Nov. 11, 1997
5558574 Ventilator Sep. 24, 1996
5522769 Gas-permeable, liquid-impermeable vent cover Jun. 4, 1996
5505659 Ventilation device Apr. 9, 1996
5421775 Compartment ventilating apparatus Jun. 6, 1995
5249602 Arrangement for flow control of gaseous and liquid media, particularly air Oct. 5, 1993
5194040 Slot ventilators Mar. 16, 1993
4485730 Ventilation unit Dec. 4, 1984
4383477 Ventilator May. 17, 1983
4359934 Emergency air vent Nov. 23, 1982

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