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Class Information
Number: 15/346
Name: Brushing, scrubbing, and general cleaning > Machines > With air blast or suction > Air blast with suction > Closed circuit systems, i.e., air recirculating
Description: Apparatus in which the cleaning air is recirculated in a substantially closed circuit, usually the intake side of the pump being the source of suction and the outlet side being the source of pressure.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7607195 |
Cleaning unit of roads and the like |
Oct. 27, 2009 |
| 7555812 |
Brushless vacuum cleaner |
Jul. 7, 2009 |
| 7552503 |
Apparatus and method for cleaning a surface with high pressure air |
Jun. 30, 2009 |
| 7503134 |
Inclined slope vacuum excavation container |
Mar. 17, 2009 |
| 7458130 |
Closed loop vacuum cleaner |
Dec. 2, 2008 |
| 7383607 |
Agitation apparatus |
Jun. 10, 2008 |
| 7337493 |
Upright-type electric vacuum cleaner with detachable dust collector |
Mar. 4, 2008 |
| 7329297 |
High efficiency separator apparatus for yard debris |
Feb. 12, 2008 |
| 7320735 |
Fan cleaning method and apparatus |
Jan. 22, 2008 |
| 7320151 |
Vacuum cleaner |
Jan. 22, 2008 |
| 7311785 |
Automatic air-blown cleaning device for liquid crystal display component in LCD assembly and method thereof |
Dec. 25, 2007 |
| 7234197 |
Unattended spot cleaning apparatus |
Jun. 26, 2007 |
| 7191485 |
Lawn waste sweeper with recirculating airstream |
Mar. 20, 2007 |
| 7143468 |
Vortex vacuum cleaner nozzle with means to prevent plume formation |
Dec. 5, 2006 |
| 7100235 |
Automatic air-blown cleaning device for liquid crystal display component in LCD assembly and method thereof |
Sep. 5, 2006 |
| 7097714 |
Particulate removal from an electrostatic chuck |
Aug. 29, 2006 |
| 7059012 |
Robot vacuum cleaner with air agitation |
Jun. 13, 2006 |
| 6957472 |
Cannister and upright vortex vacuum cleaners |
Oct. 25, 2005 |
| 6732404 |
Electric vacuum cleaner having exhaust air return feature |
May. 11, 2004 |
| 6725500 |
Air recirculating surface cleaning device |
Apr. 27, 2004 |
| 6687951 |
Toroidal vortex bagless vacuum cleaner |
Feb. 10, 2004 |
| 6689225 |
Toroidal vortex vacuum cleaner with alternative collection apparatus |
Feb. 10, 2004 |
| 6675424 |
Litter vacuum |
Jan. 13, 2004 |
| 6647587 |
Vacuum cleaner using centrifugal force dust collection to prevent filter blinding |
Nov. 18, 2003 |
| 6578230 |
Upright-type vacuum cleaner having a cyclone dust collecting apparatus |
Jun. 17, 2003 |
| 6521043 |
Device for cleaning a gumming applicator |
Feb. 18, 2003 |
| 6517640 |
Vacuum cleaner apparatus and return system for use with the same |
Feb. 11, 2003 |
| 6507163 |
Robotic bridge maintenance system |
Jan. 14, 2003 |
| 6484354 |
Air circulation type vacuum cleaner |
Nov. 26, 2002 |
| 6484355 |
Passage system of vacuum cleaner |
Nov. 26, 2002 |
| 6460217 |
Electric cleaning device |
Oct. 8, 2002 |
| 6345411 |
Vacuum cleaner |
Feb. 12, 2002 |
| 6336244 |
Electric blower and electric cleaning device using the same |
Jan. 8, 2002 |
| 6324722 |
Vacuum-cleaner with recirculation of exhaust air |
Dec. 4, 2001 |
| 6295696 |
Vacuum apparatus for cleaning condensers and the like |
Oct. 2, 2001 |
| 6263540 |
Compact utility type surface cleaning vehicle |
Jul. 24, 2001 |
| 6260231 |
Air knife drying system |
Jul. 17, 2001 |
| 6245159 |
Vacuum cleaner apparatus and return system for use with the same |
Jun. 12, 2001 |
| 6243915 |
Vacuum cleaner |
Jun. 12, 2001 |
| 6237188 |
Suction port body for vacuum-cleaner and vacuum-cleaner having the same |
May. 29, 2001 |
| 6195836 |
Mechanical surface cleaning vehicle for fine particulate removal |
Mar. 6, 2001 |
| 6161250 |
Dustless regenerative air sweeper |
Dec. 19, 2000 |
| 6154922 |
Self-propelled factory floor cleaning vehicle |
Dec. 5, 2000 |
| 6135127 |
Process and machine for treating flat surfaces |
Oct. 24, 2000 |
| 6122797 |
Debris suctioning and separating apparatus for use in a surface cleaning vehicle having a recirculating type debris suctioning system |
Sep. 26, 2000 |
| 6108863 |
Vacuum cleaner with dual blowing/suction function |
Aug. 29, 2000 |
| 6070290 |
High maneuverability riding turf sweeper and surface cleaning apparatus |
Jun. 6, 2000 |
| 6032327 |
Electric vacuum cleaner |
Mar. 7, 2000 |
| 5944956 |
Surface-cleaning doctor for use in a papermaking operation and associated method |
Aug. 31, 1999 |
| 5930864 |
Upright vacuum cleaner |
Aug. 3, 1999 |
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