Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 8186008 | Agitator and suction nozzle for vacuum cleaner having the same An agitator includes an agitator body rotatably accommodated within a suction nozzle having a suction port, and comprising a plurality of bristles planted in an outer circumference, and an air moving device formed on the outer circumference of the agitator body to c... | 05/29/2012 |
| 7926144 | Rollers and disks for carpet cleaning The claimed carpet cleaning apparatus incorporates recesses in a rigid surface of a roller, a hand-operated cleaning device, or a rigid disk. The rigid surface compresses the fibers of the soft surface as the device and the recesses decompress the fibers. The repeat... | 04/19/2011 |
| 7814613 | Rollers and disks for carpet cleaning The claimed carpet cleaning apparatus incorporates recesses in a rigid surface of a roller or in a rigid disk. As the roller or disk rotates or is moved across the soft surface to be cleaned, the roller or disk presses downward on the soft surface and compresses it.... | 10/19/2010 |
| 7392566 | Cleaning machine for cleaning a surface A cleaning machine for cleaning a surface is provided. The cleaning machine includes a base assembly that moves along the surface and a liquid distribution system associated with the base assembly for distributing the cleaning solution to the cleaning surface. A suc... | 07/01/2008 |
| 7293326 | Vacuum cleaner alignment bracket A motor and brushroll mounting system for a cleaning device. The mounting system includes a motor, an agitator, a drive system, and a bracket. The motor has a rotary driving component adapted to rotate about a drive axis centerline, and a motor housing. The agitator... | 11/13/2007 |
| 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 |
| 7197789 | Rotating and oscillating beater bar assembly for vacuum cleaners A beater bar assembly for use within a vacuum cleaner is disclosed. The beater bar assembly is capable of both axial oscillation (horizontal motion) and axial rotation, thereby providing an efficient cleaning motion. ... | 04/03/2007 |
| 7185396 | Brush of cleaner A brush of a cleaner comprising: a rotation shaft rotatably supported at a lower surface of a body; a brush hub fixed to the rotation shaft; and brush hair mounted at an outer circumference surface of the brush hub for sweeping dust and contamination of a floor, whe... | 03/06/2007 |
| 7165286 | Agitator construction An agitator includes a high strength, continuous metal axle, a pulley held on one end of the metal axle and a sleeve of lightweight plastic material received over the axle. The agitator is manufactured by molding a pulley body onto an underlying metal support or D-n... | 01/23/2007 |
| 7159276 | Rotary cleaning body, suction port body of vacuum cleaner, and production method of rotary cleaning body Catching grooves (34) extending in the axial direction are formed in the cylindrical outer surface of a brush base (35) that has a slender, substantially cylindrical shape and made of a twistable material. Brush attaching portions (43) of brush ... | 01/09/2007 |
| 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 |
| 7007336 | Agitator construction An agitator includes a high strength, continuous metal axle, a pulley held on one end of the metal axle and a sleeve of lightweight plastic material received over the axle. The agitator is manufactured by molding a pulley body onto an underlying metal support or D-n... | 03/07/2006 |
| 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 |
| 6574823 | Brushroll A vacuum cleaner brushroll having angled tuft patterns effective to increase cleanability performance of the vacuum. The brushroll comprises a spindle and at least two patterns of bristled tufts. The patterns may be helical shaped rows. The rows may defin... | 06/10/2003 |
| 6539575 | Agitator for a cleaning machine with material cutting channel An agitator for use with cleaning machines, as well as methods for making the same, are shown and described. The agitator is configured to facilitate the removal of elongated fibers therefrom. In one embodiment, the agitator has a rotatable member with op... | 04/01/2003 |
| 6367120 | Carpet cleaning apparatus with loop agitator A carpet cleaning apparatus is disclosed with a loop agitator. The loop agitator comprises a spindle with a plurality of flexible loops attached to the spindle. A blade is provided in close relative proximity to the agitator for severing hair and other fi... | 04/09/2002 |
| 6108853 | Vacuum cleaner beater brush A vacuum cleaner beater brush for lifting dirt from carpeted surfaces without damaging the carpet's fibers. The vacuum cleaner beater brush includes an elongate roller with a pair of opposite ends, and an outer side surface. Each of the ends of the roller... | 08/29/2000 |
| 6085383 | Vacuum cleaner brush wrap geometry A vacuum cleaner comprising a housing having an elongated transverse brush cavity with an elongated cylindrical brush therein, a duct having an air flow nozzle adjacent the brush cavity for receiving dirt-entrained air from the brush cavity, a vacuum moto... | 07/11/2000 |
| 5951780 | Surface treatment method and apparatus including brush means and impact means mounted on a single shaft Surface treatment apparatus having impact elements for impacting a surface to be treated, a brush element for brushing the surface, a drive device for operating the impact element and the brush elements, and a carriage device enabling the surface treatmen... | 09/14/1999 |
| 5850669 | Vacuum cleaner head A vacuum cleaner head, for attachment directly to a vacuum cleaner body having a central longitudinal axis, has exposed bristles with remote ends on a plane off-set by about 70° to the central axis. The bristles extend along opposing sides of a lower sur... | 12/22/1998 |
| 5495634 | Vacuum sweeper roller brush The invention is directed toward a vacuum sweeper roller brush having an integrally formed stiffener bar. The roller brush includes a plurality of brush tufts which fixedly reside in recesses. The brush tufts and stiffener bars are arranged helically on t... | 03/05/1996 |
| 5482562 | Method and an apparatus for the removal of fibrous material from a rotating shaft Apparatus and method for removing fibrous material wound around a generally cylindrical shaft rotated about a central longitudinal axis thereof. A cutter blade is provided to have a forward edge portion extending along the central longitudinal axis of the... | 01/09/1996 |
| 5452490 | Brushroll with dual row of bristles A brushroll for a vacuum cleaner includes a cylindrical dowel having a number of holes drilled thereinto. The holes are formed into a first row and a second row, the two rows being closely spaced in relation to each other. First tufts are secured in each ... | 09/26/1995 |
| 5365634 | Surface treating tool A surface treating tool comprising an interconnected cleaning and stripping device for a self contained automated retrieval cleaning apparatus that provides a vacuum recovery and filtration system, with the tool consisting of a rotary brush mounted in an ... | 11/22/1994 |
| 5255410 | Vacuum cleaner A vacuum cleaner generally has a working head which is positioned on the floor surface when the machine is in use. The working head of a vacuum cleaner essentially includes a rotating brush, a suction blower and a motor for operating both the brush and th... | 10/26/1993 |
| 5249328 | Vacuum cleaner beater brush structure In a vacuum cleaner beater brush structure, a beater brush roller is provided with a helical brush strip and a beater strip. A sprocket comprises a support flange and a gear pulley, the gear pulley comprising a carrier having brush tufts and beater bars, ... | 10/05/1993 |
| 5134744 | Beater brush roller of vacuum cleaner beater brush assembly A beater brush roller of a vacuum cleaner beater brush assembly comprising a body assembly including a semi-cylindrical brush body having a helical brush strip integrally provided therewith, a semi-cylindrical beater body including a helical beater strip ... | 08/04/1992 |
| 5084934 | Vacuum cleaners A vacuum cleaner has a power brush which projects dirt particles directly into a specially formed and located vacuum nozzle in such a manner that low air consumption can be used. The vacuum nozzle has an inlet extending along the full axial length of the ... | 02/04/1992 |
| 5029361 | Floor nozzle for vacuum cleaner A floor nozzle for use with a vacuum cleaner has an agitator rotatably disposed in a housing and includes a rotor and at least one elongate web mounted on a circumferential surface of the rotor. The elongate web is made of a flexible material and has a pl... | 07/09/1991 |
| 5020186 | Vacuum cleaners A vacuum cleaner has a power brush which projects dirt particles directly into a specially formed and located vacuum nozzle in such a manner that low air consumption can be used. The vacuum nozzle has an inlet extending along the full axial length of the ... | 06/04/1991 |
| 5014387 | Brush roll mounting A brush roll assembly for an upright vacuum cleaner having mounting blocks at each end to support the brush at different levels, to account for wear, depending on the selected angular orientation of such blocks. The blocks, while of different size to prev... | 05/14/1991 |
| 5003663 | Upright-type electric vacuum cleaner Disclosed is an upright-type electric vacuum cleaner which comprises a suction port body provided with a rotary brush and a main body case supported tiltably on the suction port body. Improvements are made in details such as the arrangement for supporting... | 04/02/1991 |
| 4996737 | Vacuum cleaner power nozzle An air booster power nozzle for use in combination with a vacuum cleaner having a motor/fan unit for creating a vacuum, the power nozzle including an enclosed base having a suction inlet for air and an air outlet spaced from the suction inlet, a power sou... | 03/05/1991 |
| 4912805 | Dual-purpose rotating brush for vacuum cleaner A cylindrical power brush for a vacuum cleaner includes two types of bristle tufts. One type of bristle tuft is short and stiff for contacting and agitating a carpeted surface. The other type of bristle tuft is longer and softer for contacting a hard surf... | 04/03/1990 |
| 4905341 | Upright-type electric vacuum cleaner Disclosed is an upright-type electric vacuum cleaner which comprises a suction port body provided with a rotary brush and a main body case supported tiltably on the suction port body. Improvements are made in details such as the arrangement for supporting... | 03/06/1990 |
| 4777691 | Motor driven brush assembly for vacuum cleaner A cylindrical motor driven brush for a vacuum cleaner or the like having a hollow outer cylinder and a plastic bristle tube assembly for insertion in the outer cylindrical tube. The insert tube is provided with a helical mounting strip with brush bristles... | 10/18/1988 |
| 4620341 | Curb and gutter machine A new curb and gutter machine used in combination with a vehicle and characterized by its construction to include an adjustable cutter for trimming along the side of a roadway or curb, a sweeper for removing not only trimmed material but also other debris... | 11/04/1986 |
| 4530128 | Motor driven cylindrical brush for a cleaning apparatus A motor driven cylindrical brush for a cleaning apparatus. The brush has bristles which lie in the zone outside a bearing section provided with a contact surface for a drive belt. Between the bristle filling and the bearing section, the brush member has r... | 07/23/1985 |
| 4429430 | Vacuum cleaner beater brush structure A vacuum cleaner beater brush structure having a dowel roller provided with a sprocket for cooperation with a cog belt. The brush structure is elongated for providing a wide cleaning action. A portion of the brush is disposed outboard of the cog belt spro... | 02/07/1984 |
| 4429433 | Surface cleaning machine with squeegee assembly A surface cleaning machine is provided which employs a drum broom at a forward portion of the machine for sweeping the floor, a hopper in front of the drum broom to receive debris therefrom, a plurality of disc-type scrubbing brushes at an intermediate po... | 02/07/1984 |
