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Class Information
Number: 454/188
Name: Ventilation > Having protecting air current
Description: Subject matter comprising an air jet or air sheet forced across an opening to a (ventilated) space to prevent entrance of dust, flies, or other debris into the space.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7597129 |
Door closure system |
Oct. 6, 2009 |
| 7544122 |
Air shutter and installation method thereof |
Jun. 9, 2009 |
| 7503842 |
Air curtain-assisted exhaust method and device thereof |
Mar. 17, 2009 |
| 7497770 |
Air louver for a refrigerated display case |
Mar. 3, 2009 |
| 7482558 |
Thermotherapy device |
Jan. 27, 2009 |
| 7357131 |
Air curtain door system for an oven |
Apr. 15, 2008 |
| 7044850 |
Open patient care unit |
May. 16, 2006 |
| 7040978 |
Sliding door device |
May. 9, 2006 |
| 7014672 |
Carrying vehicle, manufacturing apparatus, and carrying system |
Mar. 21, 2006 |
| 6960129 |
Conditioned vestibule for a cold storage doorway |
Nov. 1, 2005 |
| 6836906 |
Eye protection device |
Jan. 4, 2005 |
| 6797029 |
Process facility having at least two physical units each having a reduced density of contaminating particles with respect to the surroundings |
Sep. 28, 2004 |
| 6776710 |
Vent structure for slotted outlet with uniform velocity profile |
Aug. 17, 2004 |
| 6755036 |
Confined space conditioning system |
Jun. 29, 2004 |
| 6733557 |
Device for diffusing sterile air |
May. 11, 2004 |
| 6705940 |
Portable doorway bug deflector |
Mar. 16, 2004 |
| 6702663 |
Arrangement for producing an air partition |
Mar. 9, 2004 |
| 6632260 |
Adjustable clean-air flow environment |
Oct. 14, 2003 |
| 6623352 |
Vortex air barrier |
Sep. 23, 2003 |
| 6623538 |
Sterile laminar airflow device |
Sep. 23, 2003 |
| 6595429 |
Apparatus and method for providing continuous real-time conditioned air curtain |
Jul. 22, 2003 |
| 6569696 |
Device and method for manufacturing semiconductor |
May. 27, 2003 |
| 6532761 |
Low temperature physical distribution system and method and apparatus for maintaining quality in auction market |
Mar. 18, 2003 |
| 6470698 |
Freezer/refrigerator car |
Oct. 29, 2002 |
| 6450879 |
Air curtain generator |
Sep. 17, 2002 |
| 6442957 |
Refrigeration for vehicle |
Sep. 3, 2002 |
| 6431978 |
Slot outlet arrangement for air screen installations |
Aug. 13, 2002 |
| 6390755 |
Exhaust device for use in a clean room, cleanroom, and method |
May. 21, 2002 |
| 6375562 |
Sliding door |
Apr. 23, 2002 |
| 6318110 |
Artificial snow system with air roof |
Nov. 20, 2001 |
| 6248146 |
Induction assembly for high efficiency air filter |
Jun. 19, 2001 |
| 6234892 |
Device for producing hot air curtains for door openings in local transit vehicle |
May. 22, 2001 |
| 6146267 |
Device for separating two zones with different environment |
Nov. 14, 2000 |
| 6098676 |
Aseptic liquid fillings |
Aug. 8, 2000 |
| 6095918 |
Method and device for protecting a work surface |
Aug. 1, 2000 |
| 5992412 |
Filtered smoke screen |
Nov. 30, 1999 |
| 5947170 |
Aseptic liquid filling |
Sep. 7, 1999 |
| 5870898 |
Method and apparatus for controlling driving of air curtain fan |
Feb. 16, 1999 |
| 5848774 |
Air curtain mounting plate and structure |
Dec. 15, 1998 |
| 5828572 |
Processing System and semiconductor device production method using the same including air conditioning control in operational zones |
Oct. 27, 1998 |
| 5788568 |
Fan |
Aug. 4, 1998 |
| 5641354 |
Puller cell |
Jun. 24, 1997 |
| 5590537 |
Dry gas curtain for cryogenic surface |
Jan. 7, 1997 |
| 5425793 |
Coupling-type clean space apparatus |
Jun. 20, 1995 |
| 5416982 |
Moisture sealing apparatus for powdery brazing flux |
May. 23, 1995 |
| 5366409 |
Controlling pouring stream and receiver environment |
Nov. 22, 1994 |
| 5316794 |
Method for servicing vacuum chamber using non-reactive gas-filled maintenance enclosure |
May. 31, 1994 |
| 5306209 |
Contaminant shield for viewing ports |
Apr. 26, 1994 |
| 5195888 |
Multi-layer fluid curtains for furnace openings |
Mar. 23, 1993 |
| 5149299 |
Room-air interceptor device |
Sep. 22, 1992 |
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