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David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 8091169 | Mobile floor-cleaning appliance The invention relates to a mobile floor-cleaning appliance having a housing in which a cleaning tool is mounted, and having a handle holder which is mounted on the housing and is adapted to be connected to a handle in order to guide the appliance along a floor surfa... | 01/10/2012 |
| 7900310 | Powered cleaning appliance A powered sweeper includes a housing, a brushroll chamber disposed in the housing, a brushroll mounted in a brushroll chamber, a dirt chamber disposed in the housing, a drive motor disposed in the housing, and a driven wheel operatively connected to the drive motor.... | 03/08/2011 |
| 7861351 | Electric cleaning sweeper An electric cleaning sweeper comprises a housing, including a detachable dirt tray placed inside the housing; and at least one openable wall located on the dirt tray wherein the openable wall is responsive to movement of a device located on the handle which can pick... | 01/04/2011 |
| 7805795 | Brush roll arrangement for a floor cleaning tool A brush roll is rotatably supported by bearings in a housing of a cleaning brush tool. One of the bearings is incorporated in a removable bearing arrangement that can be rotationally fastened and removed as needed on a cylindrical end of the housing. Preferably coll... | 10/05/2010 |
| 7676877 | Cleaning implements and substrates for cleaning surfaces A cleaning implement for cleaning a soft or a hard surface comprises a handle, a sweeper head, rotating blades and a collection bin. The bottom wall of the collection bin includes an opening that is covered by a cleaning sheet during the cleaning operation. The heig... | 03/16/2010 |
| 7665172 | Sweeper A powered floor sweeper comprises a foot assembly with a motor driven primary agitator and a pair of edge agitators coupled to wheels such that manual propulsion of the sweeper rotates the wheels and thereby the edge agitators. The sweeper includes a slip clutch mec... | 02/23/2010 |
| 7631387 | Motorized broom and collector A cleaning device has an elongated handle attached to a housing. The housing includes a stationary brush extending through the housing. Also, the housing includes a rotatable brush, as well as a debris collector. In a first position the cleaning device is used as a ... | 12/15/2009 |
| 7617557 | Powered cleaning appliance A powered sweeper includes a housing, a brushroll chamber disposed in the housing, a brushroll mounted in a brushroll chamber, a dirt chamber disposed in the housing, a drive motor disposed in the housing, and a driven wheel operatively connected to the drive motor.... | 11/17/2009 |
| 7571509 | Surface cleaning apparatus A handheld surface cleaning apparatus comprises a body including at least a rear compartment, a forward compartment and a top volume openly connected to the rear compartment. An elongate rotatable brush arrangement is positioned within and extends across the forward... | 08/11/2009 |
| 7373685 | Mechanical sweeper configuration A mechanical sweeper is disclosed. The mechanical sweeper includes a front housing and a rotating brush secured to the front housing having tangentially extending bristles adapted to engage a surface at an oblique angle. The mechanical sweeper further includes a fra... | 05/20/2008 |
| 7371147 | System for realising complex assemblies The invention concerns a system for realizing complex constructions, characterized in that it comprises a plurality of basic elements, and a plurality of constructive and/or figurative elements, that can be coupled with said basic elements, each basic element being ... | 05/13/2008 |
| 7367076 | Dry powder spreader A carpet cleaning machine for uniformly spreading a dry carpet cleaning powder onto a surface and working the dry carpet cleaning powder into the surface. The cleaning machine includes base having a hopper integrally formed therein, distribution slots on the bottom ... | 05/06/2008 |
| 7363994 | Wheeled platforms A wheeled platform 100 is disclosed, which is characterized by high mobility and reliability, and which can be used in a wide range of applications including transport and robotic devices. The wheeled platform 100 has fore and aft body portions 130,... | 04/29/2008 |
| 7340795 | Floor sweeper A floor sweeper head is mounted to an elongated handle by a universal pivot or universal joint which allows the floor sweeper head to easily pivot about the handle in any direction to pick up debris under over hanging cabinets or under furniture. The floor sweeper h... | 03/11/2008 |
| 7334284 | Surface cleaning apparatus A surface cleaning apparatus includes a surface cleaning strip and means responsive to movement of the surface cleaning apparatus over a surface to be cleaned for positioning the cleaning strip relative to the surface to be cleaned in dependence upon the direction o... | 02/26/2008 |
| 7329294 | Dirt container for a surface cleaning apparatus and method of use A dirt container for a surface cleaning apparatus is constructed from an air impermeable material and exterior walls of sufficient rigidity to maintain the shape of the dirt container. The dirt container may be supplied in a disassembled condition and assembled by a... | 02/12/2008 |
| 7243393 | Agitator drive configuration The invention is an agitator configuration for a floor care appliance such as an upright vacuum cleaner. The floor care appliance is provided with at least two agitator chambers each having at least one rotary agitator member disposed therein. In the preferred embod... | 07/17/2007 |
| 7200892 | Robot cleaner with adjustable brush A robot cleaner with a pivotable brush which pivots in accordance with a condition of a floor surface to be cleaned. The pivotal brush prevents overload to a suction motor caused by excessive contact of the brush with the floor surface to be cleaned. The robot clean... | 04/10/2007 |
| 7152267 | Floor sweeper A light weight floor sweeper having a very low profile sweeper head that uses glides rather than rollers to slide across the surface to be cleaned. The floor sweeper head is mounted to an elongated handle by a universal pivot or universal joint which allows the floo... | 12/26/2006 |
| 7150068 | Light-weight self-propelled vacuum cleaner A vacuum cleaner power head (40) for vacuum cleaning and having two counter rotating agitators 52 and 54. Motor (60) rotates agitators (52) and (54) through transmission (70), and also rotates suction fan (65) ... | 12/19/2006 |
| 7143461 | Sweeping appliance A sweeping appliance having a housing having dirt receiving enclosure. A slot-like opening is formed in the underside of the housing. An elongate rotary brush having a plurality of bristles is located towards the front of the sweeping appliance. Front and rear wheel... | 12/05/2006 |
| 7134161 | Mechanical broom A sweeper comprising a main wheel being capable of spinning in both a counterclockwise and a clockwise direction in response to the broom being moved backwards or forwards. The sweeper has a brush wheel driven by the main wheel and being capable of spinning in one d... | 11/14/2006 |
| 7134160 | Cleaning device In a cleaning device 10, a dustpan portion 23 is supported to a frame 15 so as to freely oscillate independently from a scraping up body 16 in a vertical direction, and a dust receiving portion 23C of the dustpan portion 23 ... | 11/14/2006 |
| 7131162 | Floor and carpet push brush In a wheel supported floor and carpet push brush of the type having an array of aggressive bristles and another array of bristles which are of lesser diameter than the aggressive bristles carried on the dowel so that the brush can be turned over to bring a selected ... | 11/07/2006 |
| 7117556 | Surface cleaning apparatus A surface cleaning apparatus comprising a body (1) with a front face (201) wherein the front face (201) comprises a non-planar lower edge (203) such that in use the distance between the lower edge (203) and a plane of a surface to ... | 10/10/2006 |
| 7100234 | Suction nozzle configuration A suction nozzle for a floor care appliance such as an upright vacuum cleaner having at least a first channel located above an agitator to carry air and dirt to a suction passageway. The cleaner has several embodiments, one of which has a single channel and a single... | 09/05/2006 |
| 7051396 | Vehicle cleaning element A vehicle cleaning element of a substantially flat configuration having a first cleaning surface provided by a portion of the flat surface and a second cleaning surface provided by radially projecting prongs or tines for reaching into and pulling out dirt and debris... | 05/30/2006 |
| 7039986 | Vibration isolation machine handle Disclosed is a vibration dampening handle for power tools. It includes a branch handle attached to a main handle, but at least one resilient connection. The upper connection is through a resilient connection, and the lower connection is typically a solid connection.... | 05/09/2006 |
| 7024716 | Cleaning apparatus for screen mask An automated cleaning apparatus, employed wherein a paste-like printing agent having a low viscosity is used in a screen printing machine, comprising a cleaning unit constituted by an adhesive tape, an adhesive tape take-up body, an adhesive tape delivery body and a... | 04/11/2006 |
| 7017221 | Floor sweeping apparatus Floor sweeping apparatus (9) of the type having a rotary brush member (20), which in use is driven to rotate about a generally horizontal axis, the brush member (20) having bristle elements (22) that, as the brush member (20) rotat... | 03/28/2006 |
| 7003840 | Cleaning device In a cleaning device, the scraping up body and the rotating body rolling the adhesive roll are rotatably supported to the frame, and the adhesive roll is rotatably arranged on the scraping up body and the rotating body in parallel. ... | 02/28/2006 |
| 6971140 | Brush assembly of cleaner In a brush assembly of a cleaner including plural brushes arranged at the bottom surface of a cleaner body radially at regular intervals; plural supporting shafts for rotatively supporting the brushes; and a driving unit connected to the brushes in order to rotate t... | 12/06/2005 |
| 6968587 | Surface cleaning apparatus A surface cleaning apparatus comprises a body including a rear compartment, a forward compartment and an intermediate compartment arranged between the rear and forward compartments. An elongate rotatable brush arrangement is positioned within and extends across the ... | 11/29/2005 |
| 6918155 | Dual agitator drive system with worm gear A floor cleaning apparatus such as an upright vacuum cleaner, an extractor or a powerhead for a canister vacuum cleaner includes twin agitators that are operatively connected together by means of a worm gear drive assembly. ... | 07/19/2005 |
| 6912753 | Manual floor sweeper A manual floor sweeper includes a housing and a brush roller mounted within the housing and rotatable in a sweeping direction. A first drive member is fixed to the brush roller. A second drive member is mounted rotatably with the housing and engagable with the first... | 07/05/2005 |
| 6845538 | Cleaning implement The lower end of the rotative brush 12 contacts the cleaning subject surface 26. As the driving wheels 14 roll on the cleaning subject surface 26, the rotative brush 12 rotates, while being guided by the sweep-up slope surface 1... | 01/25/2005 |
| 6783600 | Cleaning device and method of use In a cleaning device, the scraping up body and the rotating body rolling the adhesive roll are rotatably supported to the frame, and the adhesive roll is rotatably arranged on the scraping up body and the rotating body in parallel. ... | 08/31/2004 |
| 6779231 | V-belt driven vacuum cleaner brushroll A vacuum cleaner brushroll including a spindle rotated by a drive belt having grooves in its inner drive surface extending lengthwise around the belt, and a pulley formed in one-piece with the spindle, the pulley having a flat, smooth belt surface parallel to the sp... | 08/24/2004 |
| 6760952 | Vacuum cleaner brushroll A vacuum cleaner brushroll characterized by a bristle tufted arrangement that forms multiple dwell positions around the brushroll. In each dwell position, the majority of bristle tufts along the length of the spindle are out of sweeping contact with the carpet which... | 07/13/2004 |
| 6698055 | Sweeping machine and sweeping lip A sweeping machine of the type having two rotating brushes which in operation sweep material into a sweeping lip assembly is provided. In order to prevent damages to the sweeping lip, the forward area which in use contacts the ground during sweeping opera... | 03/02/2004 |