Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7357823 | Disposable filter within a removable chamber A vacuum cleaner includes a housing, a nozzle inlet, a suction generator and a dirt cup. The dirt cup includes a dirt collection chamber, an inlet and an open end. Additionally, the vacuum cleaner includes a filter assembly. The filter assembly includes a filter hou... | 04/15/2008 |
| 7325750 | Powder coating system with improved overspray collection Powder overspray that is extracted from a spray booth is recovered back to a powder supply that is used to supply powder to the spray guns inside the spray booth. The powder overspray extracted from the booth is separated from the high flow air stream by a separator... | 02/05/2008 |
| 7293324 | Vacuum cleaner with level control A vacuum cleaner has a housing that includes a separation chamber and collection chamber, a floor unit with a suction opening, and a passage between the suction opening and separation chamber. A suction source establishes a stream of air from the suction opening to ... | 11/13/2007 |
| 7203994 | Compressed air vacuum cleaner A vacuum cleaner powered by compressed air includes a canister forming an internal collection chamber. The vacuum cleaner includes a drain at the bottom of the collection chamber from which liquid and debris can be drained, and may also provide for pressurizing the ... | 04/17/2007 |
| 7199711 | Mobile floor cleaner data communication In a method of communicating data from a mobile floor cleaner to a remote receiver a data communication is initiated from a communicator of the mobile floor cleaner to the remote receiver and data is communicated to the remote receiver with the communicator. ... | 04/03/2007 |
| 7185394 | Dirt cup assembly with attachable and detachable external filter holder A dirt cup for a vacuum cleaner includes a housing defining a dirt collection chamber, an inlet and an outlet in the housing in fluid communication with the dirt collection chamber and a selectively attachable and detachable filter holder on the housing external to ... | 03/06/2007 |
| 7181804 | Removable dirt cup assembly with external filter A dirt cup for a vacuum cleaner includes a housing defining a dirt collection chamber, an inlet and an outlet in the housing in fluid communication with the dirt collection chamber and a filter holder on the housing external to the dirt collection chamber and downst... | 02/27/2007 |
| 7159273 | Muffler assembly for a bagless vacuum cleaner An upright vacuum cleaner having a muffler system is disclosed. The upright vacuum cleaner includes a carpet engaging nozzle base and an upper housing pivotally connected to the nozzle base. The upright vacuum cleaner further includes a dirt cup removably secured to... | 01/09/2007 |
| 7140068 | Vacuum cleaner with cyclonic separation A cyclone outlet assembly with a frusto-conical dirt blocking plate minimizes clogging at the outlet of the cyclone separator. An upright vacuum cleaner with a cyclone separator is mounted on and in fluid communication with an elongated rigid tube that forms part of... | 11/28/2006 |
| 7131165 | Upright vacuum cleaner with cyclonic airflow A vacuum cleaner includes a first housing defining a cyclonic airflow chamber and a second housing defining a main suction opening that is in communication with an inlet of the cyclonic chamber. A suction source has a suction airstream inlet in communication with an... | 11/07/2006 |
| 7124463 | Conveyor lip for motorized street sweeper A street sweeper system is used typically in a motorized vehicle. The sweeper utilizes a cylindrical brush rotating about an axis that is typically perpendicular to the vehicle's direction of motion. A conveyor belt catches debris thrown forwards and upward by the b... | 10/24/2006 |
| 7080425 | Vacuum canister and mounting bracket for use therewith A mounting bracket for use in association with a vacuum canister for a central vacuum system is disclosed. The mounting bracket is received within the housing of the vacuum canister and thereby divides the canister into clean and dirt collection chambers. Dirt colle... | 07/25/2006 |
| 7051399 | Cleaner cartridge A cleaner cartridge includes a container having an interior cavity, in which cleaning agent can be stored. A first end of conduit is fluidically coupled to the interior cavity. A second end of the conduit is connectable to a chemical dispenser. ... | 05/30/2006 |
| 7047594 | Cyclonic vacuum cleaner A cyclonic vacuum cleaner having a simple structure with low airflow leakage and excellent maintainability despite its long suction passage. A dust-collecting portion 11 includes a cyclonic portion 14 which is approximately cylinder-shaped, having a bo... | 05/23/2006 |
| 7024719 | Sweeper drag shoe A sweeper drag shoe used with a rotary broom in sweeping, whereby escaping debris from under a contact skid is recaptured. The sweeper drag shoe contains a deflection plate that redirects bristle tip movement inwardly to allow the broom to recapture debris which esc... | 04/11/2006 |
| 7018439 | Collecting chamber for a vacuum cleaner A bagless vacuum cleaner includes a separating unit for separating dirt and dust from a dirt-laden airflow which is drawn in by the cleaner. The separating unit has a chamber with a collection area for collecting dirt and dust which is separated from the airflow. A ... | 03/28/2006 |
| 6942717 | Venturi effect material return system of a material collection system and appertaining method A material return system of a material collection system and appertaining method permits fine material collected in a fine material collector to be returned to a main debris tank by taking advantage of the venturi effect, thus permitting a relatively trouble-free op... | 09/13/2005 |
| 6916238 | Canopy air delivery system An area air delivery system for delivery of filtered air to an area occupiable by a user who can enter and leave the area, such as the head end of a bed, includes a canopy for at least partially surrounding the area to which air is to be supplied and defining the ar... | 07/12/2005 |
| 6902594 | Industrial dust-collector An industrial dust-collector is provided with an air blower in the bottom of the base. An air-inlet line and an air-out line are provided at the front of the air blower. A cover is provided on the top of the base, a sucking pipe is provided at the top of the cover, ... | 06/07/2005 |
| 6840385 | Lateral dispersion filter basket A lateral dispersion filter basket provides turbulence at the bottom of the filter basket reducing strain on the bottom seam of the filter bag disposed therein causing the particulate being filtered to move up along the vertical walls of the filter bag. ... | 01/11/2005 |
| 6569217 | Industrial dust collector with multiple filter compartments A specially arranged industrial dust collector with multiple filtering compartments is provided which is efficient, effective, and economical. The special industrial dust collector has a solids-gas separation compartment which is positioned generally alon... | 05/27/2003 |
| 6471751 | Polycyclonic vacuum collectors for virtually non-stop environmental remediation A vacuum collector is provided comprising a suction hose, a first drum with a cover having a cylindrical head capable of generating powerful, small-diameter cyclones, a second drum capable of generating large-diameter cyclones, and a stack of three module... | 10/29/2002 |
| 6428590 | Filter system for mobile debris collection machine A mobile debris collection machine which has an improved filter system includes a chassis, wheels for supporting the chassis, an operator controlled debris pickup on the chassis and a debris container on the chassis. There is a vacuum system for carrying ... | 08/06/2002 |
| 6375696 | Vacuum cleaner with latching arrangement A vacuum cleaner having a dirt collecting system including a latch to seal a positively pressurized dirt cup. The latch also serves to secure the dirt cup to the cleaner housing when in the closed position. The dirt cup is formed with a first dirt collect... | 04/23/2002 |
| 6237186 | Built-in wet/dry vacuum system A built-in wet/dry vacuum system includes a canister having an inlet port, an air outlet port, and a liquid outlet port. The canister bounds a chamber configured to hold a liquid. A transfer conduit couples with the canister though the inlet port. The fir... | 05/29/2001 |
| 6146434 | Cyclonic dirt cup assembly A cyclonic dirt cup assembly for a vacuum cleaner has a generally conical truncated cone positioned within a dirt cup of the vacuum cleaner. The dirt cup has a wall formed with an air inlet opening for receiving a stream of dirt-laden air within the dirt ... | 11/14/2000 |
| 5961676 | Hard bag door with air directing arrangement A hard bag cleaner door is disclosed having air directing rib vanes integral with its inner surface. These vanes take the form of, alternately, angled J-shaped ribs and short straight interleaved ribs. All the ribs are stepped so that the flow passage for... | 10/05/1999 |
| 5910247 | Two element filter bag My invention comprises a two element filter bag which includes a cylindrical outer element, a generally tubular inner element, a joining means, a securing means, and a diverting means. Cylindrical outer element is hollow, constructed of suitable filter me... | 06/08/1999 |
| 5782943 | Integrated powder collection system for paint spray booths An integrated powder collection system for paint spray booths is provided for paint spray booths having a floor through which overspray and air are exhausted. The powder collection system includes at least two sloped surfaces disposed beneath the floor fo... | 07/21/1998 |
| 5607649 | Method and apparatus for processing a particulate material in a fluidized bed chamber An apparatus for processing a particulate material containing an inflammable component, such as ethanol or another solvent, comprises a fluidized bed chamber with a perforated bed plate arranged therein. The particulate material may be fluidized on the be... | 03/04/1997 |
| 5481780 | Clean air vacuum cleaners This invention introduces a new series of vacuum cleaners or a special cover for them in which the unit will have a mechanism to prevent polluted air going out via the walls of the collection bag of the commonly used vacuum cleaners to enter into the hous... | 01/09/1996 |
| 5417855 | Filter bag subassembly A filter apparatus having a filter bag subassembly for collecting contaminating material. The filter bag sub-assembly includes five diametrically and axially-spaced bags and an integral collar. The five spaced bags form five spaced chambers and the integr... | 05/23/1995 |
| 5277704 | Mist collector A mist collector for separating liquid components from a mist-laden gas stream to include a housing which houses three filter or separation stages. The stream is pumped through ducts into the bottom of the housing, and is pulled upwardly through the filte... | 01/11/1994 |
| 5221302 | Mobile separation unit The mobile separation unit, for separating particulate solids from a transport gas, has a filtration housing for separating the solids from the transport gas connected to a vacuum pump or air compressor for inducing the flow of transport gas into the hous... | 06/22/1993 |
| 5217511 | Enhancement of electrostatic precipitation with electrostatically augmented fabric filtration An electrostatic precipitator includes a plurality of collector sections having parallel collection plates, defining gas flow lanes therebetween, and a bag filter section containing a plurality of parallel, elongated filter fabric bag elements. A pluralit... | 06/08/1993 |
| 5110331 | Dust collector with re-entrainment prevention walls A dust collector for removing particles entrained and transported in a flow of transport air which comprises a housing having a generally cylindrical chamber with a tangential inlet for introducing the transport air and causing it to assume a helical flow... | 05/05/1992 |
| 5030261 | Two stage transition input section for dust collectors An improved gas stream inlet construction for industrial dust collectors such as fabric filter type collectors that includes a first transition section in which an incoming high velocity gas stream is reduced in velocity and delivered to a second transiti... | 07/09/1991 |
| 4946483 | Filter for the separation of oily fumes The air in which the oil particles are suspended is drawn from the environment through an air intake (4) as a result of the vacuum created by a centrifugal aspirator (11) and then passes along a substantially vertical duct (5) in which an internal helical... | 08/07/1990 |
| 4921510 | Vacuum cleaner system A vacuum cleaning system having a receptacle of non-porous material, such as a plastics bag (65), adapted to safely receive and hold hazardous material such as asbestos fibre. Vacuum is applied by a fan (86) to a suction chamber (69) and then through a fi... | 05/01/1990 |
| 4883509 | Multi stage gas inlet construction for dust collectors An improved gas stream inlet construction for industrial gas treating apparatus such as fabric type dust collectors that includes two series arranged velocity reducing transition sections employing expanded metal grids as flow diverting and gas stream dif... | 11/28/1989 |
