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A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 6591447 | Spring loaded vacuum cleaner nozzle A vacuum cleaner of the fixed or floating nozzle type wherein a spring is utilized for urging the suction nozzle into the carpet pile to maintain and improve nozzle suction over a wide range of carpet pile heights and types. Such cleaners often lose nozzl... | 07/15/2003 |
| 6588054 | Upright vacuum cleaner with cyclonic airflow An upright vacuum cleaner includes an upright housing section and a nozzle section. A cyclonic airflow dirt and dust separating chamber is defined in said upright housing section. A suction source pulls air and entrained dirt, dust, and other contaminants... | 07/08/2003 |
| 6588055 | Upright vacuum cleaner with cyclonic air flow An upright vacuum cleaner includes an upright housing section and a nozzle section. A cyclonic airflow dirt and dust separating chamber is defined in said upright housing section. A suction source pulls air and entrained dirt, dust, and other contaminants... | 07/08/2003 |
| 6588049 | Cleaning installation and device for removing soot or similar deposits The present invention relates to a device for use in a cleaning installation for removing soot or similar inside deposits in a flow channel in a processing system such as a boiler, heat exchanger, flue gas filter or the like, by intermittently blasting a ... | 07/08/2003 |
| 6574831 | Upright vacuum cleaner having detachable upright handle A latching mechanism for an upright vacuum cleaner which allows an upright handle to be quickly and easily detached and reattached to an independently usable powerhead of the vacuum cleaner. The latching mechanism includes a pair of attachment portions fo... | 06/10/2003 |
| 6574829 | Leaf receptacle lid A leaf receptacle lid attaches to a hand-held portable lawn blower/vacuum having an inlet for drawing air and leaves into the blower/vacuum and having a hose outlet for discharging the air and leaves. The lid contains a vertical chute and an overhanging h... | 06/10/2003 |
| 6572711 | Multi-purpose position sensitive floor cleaning device This invention relates to a multi-purpose position sensitive floor cleaning device having two separate and distinct selective modes of operation whereby 180° longitudinal rotation of the floor cleaning device selectively activates one of the two separate... | 06/03/2003 |
| 6571422 | Vacuum cleaner with a microprocessor-based dirt detection circuit A vacuum cleaner for providing visual operational status indicators includes a vacuum cleaner having internal components that are indicative of the cleaner's performance. Sensors are coupled to at least one of the internal components to be monitored. A mi... | 06/03/2003 |
| 6568028 | Carpet-cleaning brush A carpet-cleaning brush, particularly for use in cleaning rugs or carpets soiled by the hair of animals kept in the room. The brush has bristles in the form of an angle or arc, a brush body for receiving the bristles, a brush head which is fixed thereto a... | 05/27/2003 |
| 6564421 | Multi functional cleaning module of manufacturing apparatus for flat panel display and cleaning apparatus using the same The multi functional cleaning module comprises a plurality of air curtain, an eximer ultraviolet light irradiating device, a brush, a high-speed shower device, and an air knife, where they are arranged continually on a plan and the glass substrates are in... | 05/20/2003 |
| 6560818 | Carpet cleaning wand boot A molded component or boot is removably fitted to the narrow edges of a commercial carpet cleaning wand otherwise in contact with carpet to be cleaned. Wider bearing surfaces of the attachment or boot allow for smoother action of the carpet cleaning wand ... | 05/13/2003 |
| 6560817 | Floor cleaning system An apparatus for cleaning floors which recycles waste heat and water to provide greater efficiency. An internal combustion engine is used to power the apparatus. Heat from the engine's lubricant is used to heat the wash solution applied to the floor. Heat... | 05/13/2003 |
| 6553614 | Vacuum cleaner with air/water separator hub An air and water hub for the separation of excess water from air is constructed at the top of a canister assembly that is used for the induction of air, dust and water. The hub is a spinning member rotating within the canister assembly near the top thereo... | 04/29/2003 |
| 6553609 | Apparatus for floor cleaning The invention relates to an apparatus for floor cleaning, with several wheels 4, 5, 6 being attached to a frame R in such a way that a curve movement about a momentary center MP, MP1, MP2 can be performed and all momentary centers MP, MP1, MP2 form a mome... | 04/29/2003 |
| 6553611 | Vacuum cleaner with thermal cutoff A vacuum cleaner having a thermal cutoff assembly. The assembly includes a temperature sensor disposed proximate to a motor of the vacuum cleaner. When the temperature sensor reaches a predetermined temperature, a switching element in the assembly disconn... | 04/29/2003 |
| 6553613 | Electric vacuum cleaner An electric vacuum cleaner has a main body incorporating an electric blower, a nozzle unit having a nozzle, and a first and a second connection pipe fitted between the main body and the nozzle unit so as to serve as part of the passage for a dust suction ... | 04/29/2003 |
| 6553599 | Low-profile and highly-maneuverable vacuum cleaner having at least one anti-ingestion bar A low-profile and highly-maneuverable vacuum cleaner having improved functionality including, alone or in combination, a headlight, a sidelight, anti-ingestion bars, side brushes, a squeegee, and a scent cartridge for use in cleaning floors, floor coverin... | 04/29/2003 |
| 6550098 | Extraction cleaner with tank retention A liquid extraction cleaner includes a recovery tank mounted to the forward end of a cleaner housing with a suction nozzle and conduit on a front face of the recovery tank connected to an inlet opening in the recovery tank. A vacuum source is connected to... | 04/22/2003 |
| 6546592 | Dual filter vacuum cleaner apparatus A dual filter arrangement for a vacuum cleaner for filtering particles of dust and debris from an airflow passing through the vacuum cleaner. The dual filter comprises a coarse pre-filter having an array of pores formed therein of substantially uniform di... | 04/15/2003 |
| 6543085 | Vacuum appliance having push and pull handles A vacuum cleaning appliance includes a vacuum cleaner drum having a bottom wall, a sidewall, and a rim surrounding an open upper end with a lid detachably mounted to the rim and extending across the open upper end of the vacuum cleaner drum. A motor power... | 04/08/2003 |
| 6536072 | Compression latch for dirt cup A dirt cup latching arrangement includes a cleaner housing portion and a dirt cup mounted on the housing portion to define a mounted position. A latch assembly is pivotally mounted to the housing portion. A catch frame is pivotally mounted to the housing ... | 03/25/2003 |
| 6536071 | Tank mounting of carpet extractor A carpet extractor includes a base assembly 1 including a housing 10 which selectively receives a recovery tank 22 for collecting dirty cleaning fluid. A first supply tank 14 for concentrated cleaning fluid and a second supply tank 15 for clean water are ... | 03/25/2003 |
| 6536074 | Conversion valve assembly A conversion valve arrangement for converting a vacuum cleaner from floor use to off-the-floor use. A valve door located in the suction duct leading from the nozzle body shuts off the suction airstream to the nozzle body when the vacuum cleaner is moved i... | 03/25/2003 |
| 6536076 | Suction nozzle for cleaning apparatuses such as vacuum cleaners, electric brushes or similar Suction nozzle (10, 110) for cleaning apparatuses such as vacuum cleaners, electric brushes or similar, comprising a central body (11, 111) provided with a suction chamber (30, 130), and at least two suction arms (12, 112) pivoting on the central body (11... | 03/25/2003 |
| 6532621 | Vacuum cleaner with noise suppression features A vacuum cleaner includes a cyclonic airflow chamber that facilitates the separation of contaminants from a suction airstream. The airflow chamber includes a chamber inlet and a chamber outlet, with the chamber inlet being fluidically connected with at le... | 03/18/2003 |
| 6530115 | Dryer A nozzle for an air blower of a car wash installation is designed to be adjustable to vary the direction of the air flow delivered by the blower. The blower has a tapered frusto-conical nozzle that is oblique and is rotatably mounted at its base about an ... | 03/11/2003 |
| 6526622 | Vacuum cleaner actuated by reconfiguration of the vacuum cleaner A vacuum cleaner is reconfigurable between at least two positions. The vacuum cleaner has at least one motor and fan assembly for receiving power and producing airflow during use of the vacuum cleaner. The vacuum cleaner also has at least one sensor adapt... | 03/04/2003 |
| 6526624 | Blower tube for air-jet type cleaner A blower tube connected to a blower of an air-jet type cleaner comprises a straight tube part having one end connected to the blower; and a deflecting part, extending from the other end of the straight tube part, for receiving an airflow within the straig... | 03/04/2003 |
| 6526621 | Positionable web cleaning buff assembly A positioning frame supports a rotating buff roll within a vacuum plenum at a desired location adjacent a moving web of material. The apparatus has a drive arm with a jackshaft and a support arm each pivoted off bases which may be clamped to a single cros... | 03/04/2003 |
| 6523222 | Airflow shut-off mechanism for vacuum cleaner A vacuum cleaner includes a floor nozzle having a brushroll chamber with an outlet aperture. An upper assembly is secured to the floor nozzle and is adapted to pivot relative to the floor nozzle about a generally horizontal pivot axis. A dirt cup is remov... | 02/25/2003 |
| 6523221 | Railcar cleaning method and apparatus A mobile air cleaner for removing particulate materials from a chamber of a railcar or container is mounted on a motor truck operable to locate the air cleaner adjacent a railcar. The cleaner has an air hose connected to a motor driven fan for moving air ... | 02/25/2003 |
| 6519807 | Cleaner head assembly for a vacuum cleaner The invention provides a cleaner head assembly for a vacuum cleaner comprising a cleaner head body pivotably attachable to a main body of a vacuum cleaner and a brush housing pivotably mounted on the cleaner head body, the brush housing having a suction o... | 02/18/2003 |
| 6517640 | Vacuum cleaner apparatus and return system for use with the same A vacuum cleaner that generates an output air stream to agitate dirt and other debris on the surface being cleaned.... | 02/11/2003 |
| 6513188 | Mixing pump for carpet extractor A carpet extractor includes a solution distributor, such as a spray bar 90, which delivers cleaning solution to a floor surface. A housing 10 selectively receives a recovery tank 22 for collecting dirty cleaning solution from the floor. A first tank 14 fo... | 02/04/2003 |
| 6513190 | Turbine powered vacuum cleaner nozzle A suction cleaner nozzle has a nozzle body enclosing an agitator chamber, which has an elongated suction inlet opening. An agitator is disposed in the agitator chamber such that the agitator extends partially through the suction inlet opening for agitatin... | 02/04/2003 |
| 6514356 | Edge cleaner for vacuum cleaner An upright vacuum cleaner is disclosed, comprising an upright section (12) and a base (14) with primary nozzle (18), and further including an edge cleaner (40). The edge cleaner includes a main body (46) and brushes (50). The edge cleaner is rotatably mou... | 02/04/2003 |
| 6511549 | Vacuum cleaning wheel and vacuum applicator A vacuum cleaning wheel and vacuum applicator having a stationary vacuum chamber, a ported wheel that rotates around the stationary vacuum chamber, and a stationary shoe that acts as the vacuum applicator and is positioned between the ported wheel and an ... | 01/28/2003 |
| 6510582 | Vacuum cleaner tool caddy for storing accessory tools A vacuum cleaner, provided with a detachable tool caddy unit, is disclosed. The tool caddy unit also has a pocket used for storing desired spare supplies, such as a spare dust bag or a spare transmission belt, on the cleaner body provided with a suction d... | 01/28/2003 |
| 6510585 | Turbo tool A turbo tool includes a housing forming a hollow section. The housing includes at least one air inlet and a nozzle opening spaced from the air inlet, a brushroll rotatably mounted in the housing and within the nozzle opening and a turbine. The turbine is ... | 01/28/2003 |
| 6510584 | Flow cut-off and brushroll shut-off mechanism for vacuum cleaner A vacuum cleaner includes a floor nozzle having a brushroll chamber with an outlet aperture. An upper assembly is secured to the floor nozzle and is adapted to pivot relative to the floor nozzle about a generally horizontal pivot axis. A dirt cup is remov... | 01/28/2003 |
