AU2013201115B2 - Vacuum accessory tool - Google Patents

Abstract

VACUUM ACCESSORY TOOL Abstract A vacuum accessory tool comprises a nozzle body that forms a suction nozzle and that has an electrical element comprising one or a combination of an illumination element adapted to illuminate a surface to be cleaned, an ion generator or ozone generator to purify a surface to be cleaned and eliminate odours. The tool can further include a power generator for supplying power to the electrical element. The illumination element can further emit light in the ultraviolet spectrum to illuminate stains on the surface to the cleaned. 4111484_1 (GHMaters) P79939.AU.1

Description

- 1 VACUUM ACCESSORY TOOL Cross-Reference to Related Application This application claims the benefit of U.S. Provisional Patent Application No. 61/021,708, filed 5 January 17, 2008, and is related to U.S. Patent Publication No. US2006/0248680, both of which are incorporated herein by reference in their entirety. Background of the Invention Technical Field 10 The invention relates to dry vacuum and wet extractor cleaning accessory tools. In one of its aspects, the invention relates to a vacuum accessory tool adapted to clean carpet and other fabric surfaces while illuminating the surfaces thereof. In another aspect, the invention 15 relates to an illuminated vacuum accessory tool having an agitator assembly that is powered via an air-driven turbine assembly. In yet another aspect, the invention relates to a vacuum accessory tool that emits ultraviolet (UV) light for illumination and for treatment of certain 20 organic stains including pet stains on a surface to be cleaned. In still another aspect, the invention relates to a vacuum accessory tool with an ion generator. In still another aspect, the invention relates to a vacuum accessory tool with an ozone generator. In still another 25 aspect, the invention relates to a vacuum accessory tool that purifies and/or removes odours from a cleaning surface and surrounding air. Background Attachments and accessory tools for use with household 30 vacuum cleaners and extraction machines typically include various brushes, nozzles, powered brush attachments, and the like. Further, some vacuum tools have included a lighting element that is powered directly from line 4111484 ( (GE L ers) P79939 26/02/ 3 - 2 voltage, tapped off of the vacuum motor windings, or powered by a secondary battery pack routed to the device via commonly known wires and switches. U.S. Patent Application Publication No. 2006/0272120 5 to Barrick et al. discloses an extraction cleaning device with a combination of UV lights located on a cleaning head at various positions near the point of fluid delivery. Various cleaning heads are disclosed including stationary, motorized, and ultra-sonic agitator element 10 configurations. U.S. Patent Application Publication No. 2007/0240275 to Willenbring discloses a cleaning attachment for a vacuum cleaner that includes a lighting device. The cleaning attachment comprises a housing, a lighting 15 device, a dedicated battery pack, and an associated control circuit further comprising a power switch and timing device with provisions for automatic power shut-off after a pre-determined wait time via the timing device. U.S. Patent No. 6,792,645 to Ruff discloses a lighted 20 refrigerator coil cleaning tool for attachment to a vacuum cleaner hose. The cleaning tool comprises a flattened tubular housing including an integral light source with associated battery and power switch. U.S. Patent No. 5,983,443 to Redding discloses an 25 accessory attachment including a built-in light for attachment to a vacuum cleaner. The accessory attachment serves as an intermediate connection between the vacuum suction hose and various interchangeable accessory tools. A cuff portion contains lighting elements that are 30 positioned circumferentially around the air path connection portion. Power is provided from a dedicated battery pack or from the main unit power supply line. U.S. Patent No. 2,637,062 to Sutton et al. discloses a light bulb on the cleaning head of a canister vacuum. 4111484 ( (GE L ers) P79939 26/02/ 3 - 3 Power to the light bulb is provided by the main unit power supply and delivered via connectors embedded in the vacuum hose. U.S. Patent Application Publication No. 2006/0096057 5 to Chatfield discloses a transparent illumination accessory for a vacuum cleaner. The accessory comprises a transparent coupling member that illuminates the surface to be cleaned and offers the operator a clear line of sight to the debris being vacuumed. Power is provided 10 from main line power via connectors that are embedded in the vacuum hose. U.S. Patent No. 6,711,777 to Frederick et al. discloses a turbine powered vacuum cleaner tool wherein a nozzle body encloses an agitator located adjacent an 15 elongated suction inlet opening. A turbine rotor is rotatably connected to the nozzle body and operatively connected to the agitator so that airflow generated by a remote suction source flows through the nozzle body and rotates the agitator. 20 Summary of the Invention A vacuum accessory tool according to the invention comprises a nozzle body; a suction nozzle formed by the nozzle body; an opening formed in the nozzle body and adapted to 25 be connected to a suction source remote from the nozzle body for generating a working air flow from the suction nozzle through the nozzle body; an electrical element mounted to the nozzle body and comprising at least one of: 30 (a) a light emitting diode that is configured to emit light in the ultraviolet (UV) spectrum to fluoresce stains and that is positioned on the suction nozzle to project light forwardly 4111484 1 (GE aL ers) P79939.AU. 26/02/ 3 - 4 to illuminate stains on a surface to be cleaned and visible to a user as the vacuum accessory tool is being operated by the user; (b) an ozone generator; and 5 (c) an ion generator; and a power generator mounted to the nozzle body, the power generator being electrically connected to the at least one electrical element and comprising an air-driven turbine disposed in the working air flow through the 10 nozzle body for providing mechanical energy that is converted into electrical energy for supply to the at least one electrical element. In one embodiment, the electrical element may be at least one light emitting diode and the light emitting 15 diode emits light that sanitizes or disinfects the surface to be cleaned. Furthermore, the light emitting diode may further comprise a convex lens to disperse light emitted from the light emitting diode. In another embodiment of the invention, the light 20 emitting diode is positioned on a leading edge of the nozzle body so as to illuminate the surface to be cleaned forwardly of the suction nozzle. In another embodiment of the invention, the power generator may further comprise a plurality of permanent 25 magnets mounted to the air-driven turbine and an inductor coil positioned adjacent the air-driven turbine so as to generate current in the coil by the magnets cyclically passing thereacross, to supply electrical energy to the at least one electrical element. Additionally, the electrical 30 element may be an ion generator which may be positioned on a leading edge of the nozzle body so as to purify the surface to be cleaned forwardly of the suction nozzle. 4111484 ( (GE L ers) P79939.AU. 26/02/ 3 - 5 In one embodiment, the ion generator may be positioned on the nozzle body rearwardly of the suction nozzle. Alternatively, the ion generator may be positioned within the nozzle body in the suction nozzle opening. 5 In one embodiment, the vacuum accessory tool further comprises an agitator mounted to the nozzle body and operably coupled to the air-driven turbine for rotation therewith. Optionally, the agitator may be a brush mounted for rotation about a horizontal axis. 10 In some embodiments, the vacuum accessory tool further comprises a hair removal element on the nozzle body for aiding the removal of hair from the surface to be cleaned. Additionally, the tool may further comprise a fluid delivery element for selectively distributing cleaning 15 fluid onto the surface to be cleaned. In one embodiment, the electrical element may be an ozone generator and the ozone generator may be positioned on a leading edge of the nozzle body so as to purify the surface to be cleaned forwardly of the suction nozzle. 20 Alternatively, the ozone generator may be positioned on the nozzle body rearwardly of the suction nozzle. However, the ozone generator may be positioned within the nozzle body in the suction nozzle opening. Brief Description of the Drawings 25 FIG. 1 is a front perspective view of a vacuum accessory tool with an illumination element according to a first embodiment of the invention. FIG. 2 is an exploded view of the vacuum accessory tool shown in FIG. 1 30 FIG. 3 is a section view taken along line 3-3 of FIG. 1 showing a drive train of the vacuum accessory tool. 4111484 (GE L ers) P79939.AU. 26/02/ 3 - 6 FIG. 4 is a front perspective view of an extractor accessory tool with an illumination element according to a second embodiment of the invention. FIG. 5 is an exploded view of the extractor accessory 5 tool shown in FIG. 4. FIG. 6 is a perspective view of the extractor accessory tool shown in FIG. 4, with portions of the extractor accessory tool removed for clear visibility to internal components. 10 FIG. 7 is a sectioned partial view taken along line 7 7 of FIG. 4 showing a suction selector valve of the extractor accessory tool in a first operating position. FIG. 8 is a sectioned partial view taken along line 7 7 of FIG. 4 showing the suction selector valve of the 15 extractor accessory tool in a second operating position. FIG. 9 is a section view taken along line 9-9 of FIG. 4 showing an inductor coil, a turbine fan, a magnet, and the illumination element of the extractor accessory tool. 20 FIG. 10 is a schematic view of an alternate configuration of the accessory tool shown in FIG. 1. Description of the Preferred Embodiments Referring to the drawings and particularly FIGS. 1-2, a vacuum accessory tool 10 according to a first embodiment 25 of the invention comprises a nozzle body 11 formed by an upper housing 12 and a lower housing 14 secured together by a rotatable and removable retaining ring 13. The tool 10 further comprises an illumination element 16 and an agitator assembly 18, both of which may be operatively 30 coupled to and powered by an impeller assembly 20 that is in turn powered by a working airflow passing through the tool 10. A more detailed description of the basic 4111484 ( (GE L ers) P79939 26/02/ 3 operation of an impeller-driven accessory tool is provided in U.S. Patent Application Publication No. 2006/0248680 to Heidenga et al. The tool 10 can be fluidly connected to a remote suction source 170. The remote suction source 170 5 can be a vacuum cleaner, to which the tool 10 is fluidly coupled by attaching a conventional vacuum hose 160 to the tool 10. In the illustrated embodiment, a suction nozzle 32 is formed at a forward, lower portion of the lower housing 10 14. The lower housing 14 further comprises a working air conduit 34 positioned on an end of the nozzle body 11 opposite the suction nozzle 32. The working air conduit 34 is configured to be connected to the vacuum hose 160 to couple the tool 10 to the remote suction source 170. 15 A lower agitator chamber 36 is formed at a forward portion of the lower housing 14 in close proximity to and in fluid communication with the suction nozzle 32. The agitator assembly 18 is mounted within the lower agitator chamber 36 and is enclosed by an upper agitator cover 24 20 formed at a forward portion of the upper housing 12. The agitator assembly 18 comprises a commonly-known brushroll including a dowel 60 that supports a plurality of bristles 56. The dowel 60 further comprises bearing assemblies 54 at either end thereof and a fixed agitator pulley 58 25 intermediate to the bearing assemblies 54. The bearing assemblies 54 are mounted to corresponding brush bearing supports 38 formed in the lower agitator chamber 36. An impeller chamber 40 formed between the suction nozzle 32 and the working air conduit 34 receives the 30 impeller assembly 20. In the illustrated embodiment, the impeller assembly 20 comprises an air-driven turbine having a plurality of arcuate blades 62 surrounding an impeller hub 64 and a pair of bearing assemblies 68 received by bearing supports 42 formed in the lower 35 housing 14 on opposite sides of the impeller chamber 40. 4111484 ( (GE L ers) P79939.AU. 26/02/ 3 - 8 The impeller assembly 20 is fixedly mounted on an axle 70 that passes through the impeller hub 64 and defines an axis about which the impeller assembly 20 rotates. A belt pulley 72 is fixedly attached to the axle 70 and resides 5 within a belt compartment 44 when the tool 10 is assembled. The belt compartment 44 is formed adjacent the impeller compartment 40 and extends to the lower agitator chamber 36 and receives a drive belt 74 which mechanically couples the belt pulley 72 of the impeller assembly 20 to 10 the agitator pulley 58 of the agitator assembly 18. The drive belt 74 is maintained under tension so that rotation of the belt pulley 72 induces rotation of the agitator pulley 58, thereby rotating the dowel 60. The illumination element 16 is preferably positioned 15 on a leading edge of the tool 10, adjacent to the suction nozzle 32, to effectively illuminate the surface to be cleaned. The illumination element 16 comprises at least one light emitting element 48, a cover 46, and a power source. The light emitting element 48 is chosen from a 20 range of optional light emitting elements based upon the desired effect and dictated by the range in the light spectrum. For example, illumination of the surface to be cleaned requires a light source in the visible light spectrum with a wavelength of at least 400 nanometres. 25 Other options include various ranges in the ultraviolet light (UV) spectrum. For example, light in the UVA range comprising a wavelength from about 400 nanometres to about 320 nanometres (also known as "black light") is effective for illuminating carbon-based stains, including pet stains 30 such as urine stains. UVA light causes carbon-based stains to fluoresce, thus making the previously invisible stain visible to the eye. Furthermore, it is known that illuminating certain peroxygen cleaning compounds with UVA light can improve cleaning efficacy and decrease the 35 cleaning time. The light emitting element 48 can be chosen to have a sanitization or disinfection action on 4111484 ( (GE L ers) P79939.AU. 26/02/ 3 - 9 the surface to be cleaned. Disinfecting the surface to be cleaned is best achieved with a UVC wavelength of about 260 nanometres, however wavelengths from about 280 nanometres to about 100 nanometres are also effective. 5 Once the desired effect is known, the light emitting element 48 can be chosen from known constructions, including light emitting diodes (LED), incandescent, fluorescent, and combinations thereof. Furthermore, multiple dissimilar light emitting element types can be 10 incorporated into the illumination element 16. Use of a commonly known selector or toggle switch can allow selection of UVA, UVC, and/or visible light independently, or, in various combinations depending on the specific cleaning requirement. 15 Referring to FIGS. 2 and 3, at least one mounting recess 26 can be formed on a leading surface of the upper agitator cover 24 in which the light emitting element 48 may be positioned. The cover 46 is mounted on the upper agitator cover 24 to enclose the mounting recesses 26 and 20 can include at least one lens 47 to allow light from the light emitting element 48 to pass through the cover 46. The lens 47 can be transparent or translucent and can advantageously be convex-shaped to disperse the light emitted by the light emitting element 48. Alternately, the 25 cover 46 can be made from a transparent or translucent material thereby transmitting light from the light emitting element 48 through the cover without need for a lens. The cover 46 can also include integral mounting features (not shown) to house and retain the light 30 emitting element 48. The vacuum accessory tool 10 further comprises a power source for supplying power to the illumination element 16. In the preferred embodiment, the power source is a power generator 52 which produces electrical energy from 35 mechanical energy. The illumination element 16 includes wire conductors 50 that connect the light emitting element 4111484 ( (GE aL>ers) P79939.AU. 26/02/ 3 - 10 48 to the power generator 52. In the preferred embodiment, the power generator 52 comprises a motor 45 that functions by converting kinetic/mechanical energy into electrical energy, i.e. rotational motion into 5 electricity, and is driven by the drive belt 74 that mechanically connects the air-driven impeller assembly 20 to the agitator brush assembly 18 for cooperative rotation. Thus, the air-driven impeller assembly 20 can be considered a part of the power generator 52 since it 10 provides the mechanical energy that is converted to electrical energy. The motor 45 comprises a motor shaft 51 having a motor pulley 53 fixedly connected thereto which is coupled by the drive belt 74 to the belt pulley 72. As shown in FIG. 3, the motor pulley 53, agitator 15 pulley 58, and belt pulley 72 are generally arranged in a triangular formation so that one belt 74 can be used to drive both the motor 45 and the agitator assembly 18. Alternately, two separate belts (not shown) could be provided, one coupling the belt pulley 72 to the motor 20 pulley 53 and the other coupling the belt pulley 72 to the agitator pulley 58. The motor 45 has output leads 55 that are connected to the conductors 50 through a suitable socket (not shown). The motor 45 can be mechanically mounted either to the upper housing 12, lower housing 14 25 or a combination thereof via mounting features (not shown) formed in the nozzle body 11, and can comprise a low voltage direct current (LVDC) motor. The tool 10 can optionally further comprise a hair removal element 22 for aiding in the removal of pet hair 30 from the surface to be cleaned. The hair removal element 22 is preferably associated with the suction nozzle 32 and can be mounted to the underside of the lower housing 14 in the area of the lower agitator chamber 36. The material of the hair removal element 22 can be selected such that 35 it creates an electrostatic charge when in contact with and moving relative to the surface to be cleaned. The 4111484 ( (GE L ers) P79939.AU. 26/02/ 3 - 11 electrostatic charge attracts pet hair and other debris on the surface and holds the pet hair and other debris in the vicinity of the suction nozzle 32 for ingestion therethrough. Details of several suitable hair removal 5 elements are provided in the above-referenced Heidenga application. In operation, a remote suction source 170 is energized to create a working air flow through a hose 160 that connects the tool 10 with the remote suction source 170 at 10 the working air conduit 34 to draw working air through the suction nozzle 32. Working air is pulled through the suction nozzle 32, into the impeller chamber 40, and subsequently induces rotation of the impeller assembly 20. When the blades 62 of the impeller assembly 20 are exposed 15 to a moving air stream, such as that created by the remote suction source 170, the axle 70 rotates with the blades 62, and the belt pulley 72 rotates with the axle 70. The belt pulley 72, in turn, drives the drive belt 74, which rotates the motor pulley 53 and the agitator pulley 58. 20 The rotation of the motor shaft 51 cooperatively rotates the internal armature (not shown) which is also connected to the motor shaft 51 and induces an electro-motive force (e.g. "emf" or voltage) in the circuit, ultimately providing power to the lighting element 48. 25 Referring to FIGS. 4 through 9 a third embodiment of the invention is shown, which comprises a wet extractor accessory tool 80. The tool 80 comprises a main housing 82 having an illumination element 84 and an agitator assembly 86, both of which may be operatively coupled to 30 and powered by an impeller assembly 90 which is in turn powered by air passing through the tool 10. The tool 80 may be fluidly connected to a remote suction source 170. The remote suction source 170 is typically a vacuum cleaner, carpet cleaner, or extractor to which the tool 10 35 is fluidly coupled by attaching a conventional vacuum hose 160 to the tool 80. 4111484 ( (GE L ers) P79939 26/02/ 3 - 12 Referring to FIGS. 5 and 7, a suction nozzle 100 is formed at a forward portion of the main housing 82 and is defined between a rear nozzle body 101, which can be integrally formed with the main housing 82, and a front 5 nozzle window 102. The main housing 82 further comprise a working air conduit 94 positioned on an end of the main housing 82 opposite the suction nozzle 100. The working air conduit 94 is configured to be connected to the vacuum hose 160 to couple the tool 10 to the remote suction 10 source 170. The working air conduit 94 is in fluid communication with the suction nozzle 100 via a connecting conduit 95. An agitator chamber 108 is formed in the main housing 82 rearwardly of the suction nozzle 100. The agitator 15 assembly 86 is mounted within the agitator chamber 108 and is enclosed by a lower agitator cover 88. The agitator assembly 86 may comprise a commonly-known brushroll comprising a dowel 138 that supports a plurality of bristles 134. The dowel 138 further comprises bearing 20 assemblies 132 at both ends thereof and a fixed agitator pulley 136 intermediate to the bearing assemblies 132. The bearing assemblies 132 are mounted to corresponding bearing supports 139 formed in the lower agitator cover 88. 25 An impeller chamber 104 is formed on one side of the main housing 82 and receives the impeller assembly 90, which is enclosed by an impeller cover 92 that attaches to the impeller chamber 104. The impeller chamber 104 is in fluid communication with the working air conduit 94, and 30 thus the remote suction source 170, via an outlet opening 106 (FIG. 7). Air is drawn into the impeller chamber 104 through at least one inlet opening 105 formed in the periphery of the impeller chamber 104. In the illustrated embodiment, the impeller assembly 90 comprises an air 35 driven turbine fan 140 having a plurality of arcuate blades 141 surrounding an impeller hub 147. The turbine 4111484 ( (GE L ers) P79939.AU. 26/02/ 3 - 13 fan 140 is fixedly mounted on an axle 146 that passes through the impeller hub 147 and defines an axis about which the turbine fan 140 rotates. A belt pulley 148 is fixedly attached to the axle 146. 5 As illustrated in FIG. 6, the belt pulley 148 drives a reduction spur gear train 152, which includes a drive pinion 153 that is mechanically coupled to the agitator pulley 136 by a drive belt 150, thereby operably coupling the impeller assembly 90 to the agitator assembly 86. The 10 drive belt 150 is maintained under tension so that rotation of the drive pinion 153 induces rotation of the agitator pulley 136, thereby inducing rotation of the dowel 138. The tool 80 can optionally include a fluid delivery 15 element for selectively distributing cleaning fluid onto the surface to be cleaned. As illustrated, the fluid delivery element comprises a solution tube 121 coupled between a fluid delivery nozzle 119 and adapter coupling 123. The fluid delivery nozzle 119 is preferably 20 positioned within the agitator chamber 108 and can be orientated to distribute cleaning fluid directly on the surface to be cleaned or onto the agitator assembly 86 for distribution by the brushroll. The solution tube 121 receives cleaning fluid from a cleaning fluid source (not 25 shown) by coupling the adapter coupling 123 with a supply tube (not shown) or other means in fluid communication with the cleaning fluid source. The cleaning fluid source may be carried by a vacuum cleaner, carpet cleaner, or extractor that also serves as the remote suction source 30 170. The fluid delivery element can further comprise an actuator (not shown) for controlling the dispensing of cleaning fluid through the nozzle 119. The actuator can be provided on the tool 80 itself, or on the remote suction source 170. 4111484 (GE L ers) P79939 26/02/ 3 - 14 Now referring to FIGS. 5, 6 and 7, the tool 80 further comprises a suction selector valve assembly 96 for selective operation of either the agitator assembly 86 or the suction nozzle 100. The suction selector valve 5 assembly 96 comprises a valve body 154 slidably received within the working arm conduit 94 and can selectively close the outlet opening 106. The valve body 154 comprises a valve head 156 that can be selectively received within the connecting conduit 95, which forms a 10 valve seat 158 on one end thereof for the valve head 156. A selector button 98 fixedly attached to the valve body 154 is provided on the exterior of the main housing 82 for moving the valve body 154 between a first operating position (FIG. 7) and a second operating position (FIG. 15 8). Referring to FIG. 7, in the first operating position, the suction selector valve assembly 96 is in an orientation in which the valve head 156 is received in the valve seat 158, thereby blocking fluid flow through the 20 connecting conduit 95 and exposing the outlet opening 106. Accordingly, no suction is generated at the suction nozzle 100; instead, working air enters the impeller chamber 104 through the inlet opening 105 and passes through the outlet opening 106 into the working air conduit 94. The 25 working air to approaches the turbine fan 140 at a tangential trajectory angle and, subsequently, induces rotation of the turbine fan 140about its axle 146. The rotating turbine fan 140 drives the coupled turbine axle 146 and the drive pinion 148. The rotating drive pinion 30 148 drives the reduction spur gear train 152, which in turn drives the belt pulley 136 and results in cooperative rotation of the agitator assembly 86. Referring to FIG. 8, the suction selector valve assembly 96 is moved to the second operating position by 35 sliding the selector button 96 rearward. In the second operating position, the suction selector valve assembly 96 4111484 ( (GE L ers) P79939.AU. 26/02/ 3 - 15 is in an orientation in which the valve head 156 is spaced from the valve seat 158 for fluid flow through the connecting conduit 95, and in which the valve body 154 closes or covers the outlet opening 106. Accordingly, the 5 airflow path through the suction nozzle 100 is open and the airflow path through the impeller chamber 104 is closed. Air, cleaning fluid, and/or debris are drawn into the tool 80 at the suction nozzle 100 and pass sequentially through the connecting conduit 95 and the 10 working air conduit 94. Thereafter, the air, cleaning fluid, and/or debris may enter the vacuum hose 160 and remote suction source 170, which may include a suitable collector (not shown) for storing material drawn through the tool 80. 15 Cleaning fluid may be dispensed from the fluid delivery nozzle 119 of the fluid delivery element with the suction selector valve assembly 96 in either the first or second operating position. Preferably however, cleaning fluid is dispensed with the suction selector valve 20 assembly 96 in the first operating position so that the rotating agitator assembly 86 can be used to work the cleaning fluid into the surface to the cleaned. Referring to FIGS. 4, 5, and 9, the illumination element 84 comprises a lighting element housing 120, at 25 least one light emitting element 124, an inductor coil 128, and a plurality of magnets 144 that mount into associated recesses 142 on the turbine fan 140. The light emitting element 124 can be any of the types discussed above with respect to the first embodiment of the 30 invention. The illumination element 84 further comprises the necessary conductor wires 126 and associated wire routing features and housing mounting features (not shown) required for successful assembly and operation as is known by one of ordinary skill in the art. The illumination 35 element 84 can be user-adjustable to disperse light in 4111484 ( (GE L ers) P79939.AU. 26/02/ 3 - 16 downward or forward directions depending on the unique stain illumination or stain treatment requirements. As shown in FIG. 4, the lighting element housing 120 can be mounted to an underside of the main housing 82, 5 preferably near the agitator chamber 108 and contains the light emitting element 124, the inductor coil 128 and the necessary conductor wiring 126. The lighting element housing 120 can also be mounted in alternate locations on the tool 80. The lighting element housing 120 further 10 comprises at least one lens 123 (FIG. 9) to pass light from the light emitting element 124 through the lighting element housing 120. The lens 123 can be transparent or translucent and can advantageously be convex-shaped to magnify the light emitted by the light emitting element 15 124. Alternately, the lighting element housing 120 can be made from a transparent or translucent material thereby allowing light from the light emitting element 124 to pass therethrough without need for a lens. In operation, power is delivered to the illumination 20 element 84 via an electromagnetic inductive circuit. The magnets 144 embedded into the periphery of the turbine fan 140 induce an electromotive force in the inductor coil 128 when the turbine fan 140 rotates, thereby generating an electromotive force (voltage) to power the light emitting 25 element 124 that is connected in series with the inductor coil 128. Alternatively, the electromagnetic inductive circuit can be used to power other electrical elements including an ion generator 180 and/or an ozone generator 182 as previously described. 30 Referring now to FIG. 10, showing a schematic view of a vacuum accessory tool 10' that includes an alternate powered electrical element comprising one of either an ion generator 180, an ozone generator 182, and/or a light emitting element 48'. The ion generator 180, ozone 35 generator 182, and/or light emitting element 48' can be 4111484 (GE L ers) P79939.AU. 26/02/ 3 - 17 electrically connected and selectively energized by a turbine driven power generator 52'. Ion and ozone generators are well-known devices that can be utilized to provide air and surface purification. The purification 5 process can eliminate undesirable odours from a surface to be cleaned. Ion generators typically disperse negatively or positively charged ions into the air. These ions attach to particulate matter such as dust, animal dander, mould spores, bacteria, and pollen giving them a negative 10 or positive charge. The charged particulates then tend to attract to nearby surfaces such as furniture, carpet, or walls; or they attract to one another and settle out of the air due to their larger combined mass. When an ion generator is mounted to a vacuum accessory tool and 15 configured to emit ions in close proximity to a cleaning surface, the ions can attract undesirable particulates residing on the cleaning surface, such as carpet fibres, and can attract and contain any particulates that are stirred up and introduced into surrounding air during the 20 vacuuming process. Ion generators are commercially available in various sizes ranging from large generators that are capable of purifying air in an entire room to smaller, portable and even wearable devices that can purify a smaller volume of 25 air near a user or inside a vehicle. Representative examples of portable ionic generators are the AirTamerm A3000 from Comtech Research, LLC (South Greenfield, Mo.), model XJ-850 from Heaven Fresh, Inc. (Toronto, Ontario), and model AS150MM from Wein Products, Inc. (Los Angeles, 30 Ca.). Additional examples showing self-contained electro kinetic ion generators can be found in U.S. Patent Nos. 6,632,407 and 6,896,853 both to Lau et al, which are incorporated herein by reference in their entirety. Ozone generators are well known in the art and can 35 comprise corona discharge type generators or UV lamp generators. Both types emit ozone, which is an unstable 4111484 ( (GE aL>ers) P79939.AU. 26/02/ 3 - 18 molecule formed of three oxygen atoms. Upon encountering other molecules in the air or on surfaces, the ozone molecule can transfer an oxygen molecule thereby altering the molecular structure of the receiving substance. When 5 bacteria, mould, mildew, or other micro-organisms are exposed to ozone, the organisms are altered and this alteration typically results in the death of those substances and subsequent elimination of its odour. Representative, non-limiting examples of ozone generators 10 are described in the following patents: U.S. Patent Nos. 5,866,082 to Hatton et al., 4,051,045 to Yamamoto et al., 4,461,744 to Erni et al., 5,268,151 to Reed et al., and 1,971,513 to Stoddard, which are all incorporated by reference in their entirety herein. 15 FIG. 10 shows a schematic diagram of a vacuum accessory tool 10' including either of an ion generator 180, an ozone generator 182, or a light emitting element 48'. The accessory tool 10' comprises a nozzle 32' that is fluidly connected to a turbine impeller chamber 40' and 20 a working air conduit 34' for selective connection to a remote suction source 170' via a flexible hose assembly 160'. As previously described, the accessory tool 10' further comprises a power generator 52' operably coupled to an impeller assembly 20' via a drive belt 150' or other 25 suitable means such as a gear train or the like. The power generator 52' is electrically connected to either of an ion or ozone generator 180, 182 via conductors 55' for delivering power to either device. The ion generator 180 or ozone generator 182 is preferably positioned at a lower 30 portion of the accessory tool 10' near the front or rear of the nozzle opening 32' in close proximity to the surface to be cleaned. In use, a remote suction source 170' is energized to create a working air flow through a hose 160' that 35 connects the tool 10' with the remote suction source 170' at the working air conduit 34' to draw working air through 4111484 ( (GE L ers) P79939.AU. 26/02/ 3 - 19 the suction nozzle 32'. Working air is pulled through the suction nozzle 32', into the impeller chamber 40', and subsequently rotates the impeller assembly 20'. The rotating impeller assembly 20' drives the electrical 5 generator 52', which, in turn, provides power to the ion generator 180 or ozone generator 182. When energized, the ion or ozone generator 180, 182 disperse ions or ozone molecules onto the surface to be cleaned and into the surrounding air that can purify and remove undesirable 10 odours from the cleaning surface and from surrounding air. While this invention has been specifically described in connection with certain specific embodiments thereof, it is to be understood that this is by way of illustration and not of limitation. As an example, power to the 15 electrical element can be supplied from other types of power generators, such as a dynamo. Alternately, the power source for the illumination element could be an energy storage device, such as a battery, a rechargeable battery connected to a recharging circuit, line voltage, 20 or other power sources not specifically described herein. Reasonable variation and modification are possible within the scope of the foregoing description and drawings without departing from the scope of the invention, which is described in the appended claims. 25 In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word "comprise" or variations such as "comprises" or " comprising" is used in an inclusive sense, 30 i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention. It is to be understood that, if any prior art publication is referred to herein, such reference does not 35 constitute an admission that the publication forms a part 4111484 1 (GE aL ers) P79939.AU. 26/02/ 3 - 20 of the common general knowledge in the art, in Australia or any other country. 4111484 (GE aL ers) P79939 26/02/ 3

Claims (19)

1. A vacuum accessory tool comprising: a nozzle body; a suction nozzle formed by the nozzle body; an opening formed in the nozzle body and adapted to be connected to a suction source remote from the nozzle body for generating a working air flow from the suction nozzle through the nozzle body; an electrical element mounted to the nozzle body and comprising at least one of: (a) a light emitting diode that is configured to emit light in the ultraviolet (UV) spectrum to fluoresce stains and that is positioned on the suction nozzle to project light forwardly to illuminate stains on a surface to be cleaned and visible to a user as the vacuum accessory tool is being operated by the user; (b) an ozone generator; and (c) an ion generator; and a power generator mounted to the nozzle body, the power generator being electrically connected to the at least one electrical element and comprising an air-driven turbine disposed in the working air flow through the nozzle body for providing mechanical energy that is converted into electrical energy for supply to the at least one electrical element.

2. The vacuum accessory tool according to claim 1 wherein the electrical element is at least one light emitting diode. 22

3. The vacuum accessory tool according to claim 1 or claim 2 wherein the light emitting diode emits light that sanitizes or disinfects the surface to be cleaned.

4. The vacuum accessory tool according to any of claims 1 to 3 wherein the light emitting diode further comprises a convex lens to disperse light emitted from the light emitting diode.

5. The vacuum accessory tool according to any of claims 1 to 4 wherein the light emitting diode is positioned on a leading edge of the nozzle body so as to illuminate the surface to be cleaned forwardly of the suction nozzle.

6. The vacuum accessory tool according to any of the preceding claims wherein the power generator further comprises a plurality of permanent magnets mounted to the air-driven turbine and an inductor coil positioned adjacent the air-driven turbine so as to generate current in the coil by the magnets cyclically passing thereacross, to supply electrical energy to the at least one electrical element.

7. The vacuum accessory tool according to any of the preceding claims, and further comprising an agitator mounted to the nozzle body and operably coupled to the air-driven turbine for rotation therewith.

8. The vacuum accessory tool according to claim 7 wherein the agitator is a brush mounted for rotation about a horizontal axis.

9. The vacuum accessory tool according to any of the preceding claims, and further comprising a hair 23 removal element on the nozzle body for aiding the removal of hair from the surface to be cleaned.

10. The vacuum accessory tool according to any of the preceding claims, and further comprising a fluid delivery element for selectively distributing cleaning fluid onto the surface to be cleaned.

11. The vacuum accessory tool according to claim 1 wherein the electrical element is an ion generator.

12. The vacuum accessory tool according to claim 11 wherein the ion generator is positioned on a leading edge of the nozzle body so as to purify the surface to be cleaned forwardly of the suction nozzle.

13. The vacuum accessory tool according to claim 11 wherein the ion generator is positioned on the nozzle body rearwardly of the suction nozzle.

14. The vacuum accessory tool according to claim 11 wherein the ion generator is positioned within the nozzle body in the suction nozzle opening.

15. The vacuum accessory tool according to claim 1 wherein the electrical element is an ozone generator.

16. The vacuum accessory tool according to claim 15 wherein the ozone generator is positioned on a leading edge of the nozzle body so as to purify the surface to be cleaned forwardly of the suction nozzle.

17. The vacuum accessory tool according to claim 15 wherein the ozone generator is positioned on the nozzle body rearwardly of the suction nozzle. 24

18. The vacuum accessory tool according to claim 15 wherein the ozone generator is positioned within the nozzle body in the suction nozzle opening.

19. A vacuum accessory tool as hereinbefore described with reference to the accompanying drawings. 4824659_1 (GHMatters) P79939.AU.1