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Class Information
Number: 454/254
Name: Ventilation > Having inlet airway
Description: Subject matter comprising means for admitting air to a (ventilated) space.










Sub-classes under this class:

Class Number Class Name Patents
454/256 Including automatic control means 172
454/259 Including backdraft preventer 64
454/284 Including specific air distributor (e.g., register, etc.) 105
454/275 Including specific cover or shield for exterior vent opening 51
454/261 Including structure for mixing plural air streams together 39
454/255 Pressure regulation 49
454/270 Sleeved vent for ceiling, wall, or floor (e.g., thimble) 33
454/260 Through roof eaves or rafters 90
454/333 With adjustable valve (e.g., damper, etc.) 117
454/338 With air pump 129
454/337 With means for liquid contact 50


Patents under this class:

Patent Number Title Of Patent Date Issued
8689820 Pneumatic system for residential use Apr. 8, 2014
8690999 Modular, high-throughput air treatment system Apr. 8, 2014
8641493 Cooling device for the air conditioning of an examination area of a medical examination apparatus and medical examination apparatus comprising a cooling device Feb. 4, 2014
8500525 Elevator ceiling ventilation cavity Aug. 6, 2013
8429922 Attic cooling process and apparatus Apr. 30, 2013
8355246 Modular air management devices Jan. 15, 2013
8307486 Air vent dust scrubber Nov. 13, 2012
8251786 Protection device for ventilation ducts Aug. 28, 2012
8245724 Pneumatic system for residential use Aug. 21, 2012
8235777 Fully articulated and comprehensive air and fluid distribution, metering and control method and apparatus for primary movers, heat exchangers, and terminal flow devices Aug. 7, 2012
8235776 Fully articulated and comprehensive air and fluid distribution, metering, and control method and apparatus for primary movers, heat exchangers, and terminal flow devices Aug. 7, 2012
8006571 Air flow measurement Aug. 30, 2011
7794312 Enclosure cover and method for making an enclosure cover Sep. 14, 2010
7740530 Air handling system Jun. 22, 2010
7677243 Solar heating system and architectural structure with a solar heating system Mar. 16, 2010
7566264 Small duct high velocity damper assembly Jul. 28, 2009
7094143 Security housing having ventilation openings Aug. 22, 2006
7022008 Air duct seal for HVAC case Apr. 4, 2006
6966830 Device for ventilation and/or air circulation Nov. 22, 2005
6941193 Sensor system for measuring and monitoring indoor air quality Sep. 6, 2005
6907747 Refrigeration unit guard device Jun. 21, 2005
6669554 Ventilating sill plate for crawl spaces Dec. 30, 2003
6589112 Duct silencer Jul. 8, 2003
6589111 Snow extractor for use with an air handling system Jul. 8, 2003
6506110 Ventilation device, especially for electrical control devices Jan. 14, 2003
6273813 Ventilation apparatus Aug. 14, 2001
5895318 Apparatus and method for selectively dispensing oxygen from an aerosol container Apr. 20, 1999
5860857 Method and apparatus for controlling the atmosphere of an essentially closed space Jan. 19, 1999
5791984 Air handling system with snow removal capabilities Aug. 11, 1998
5409266 Adjustable roof jack Apr. 25, 1995
5306208 Apparatus for the ventilation of the passenger space of rapidly moving elevator cars Apr. 26, 1994
5197921 Construction element for a noise-suppression shed Mar. 30, 1993
5080007 Tilted seamless vent and method for making the same Jan. 14, 1992
5035093 Building structure with fixed center and movable perimeter roof sections Jul. 30, 1991
4995308 Roof ventilating apparatus Feb. 26, 1991
4987894 Anesthetic evacuation regulator Jan. 29, 1991
4938123 Wind directing assembly for a boat hatch or like structure Jul. 3, 1990
4922806 Doors for negative air pressure enclosure May. 8, 1990
4815365 Self-ventilating greenhouse Mar. 28, 1989
4715268 Ventilator device Dec. 29, 1987
4672888 Inflatable greenhouse vent cover Jun. 16, 1987
4631876 Orifice metering fan device Dec. 30, 1986
4526091 Adjustable roof jack Jul. 2, 1985
4514951 Guard grid for a passageway May. 7, 1985
4486122 Method and device for reducing the risk of freezing of surface-water pipe-line systems Dec. 4, 1984
4164265 Baffle Aug. 14, 1979











 
 
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