Abstract: In an electric vacuum cleaner having an intake air opening 18 disposed in a front portion of a main body case 17, a dust collection case 19 which communicates with the intake air opening 18, and a motor fan 20 provided in a back portion of the main body case, and an intake air passage 23, 24, 25 from the dust collection case 19 to the motor fan 20 being formed, a noise blocking member 14d having a specific gravity larger than a material composing the main body case 17 and an area wider than a project area of an intake vent 20a is disposed in the intake air passage 25 facing to the intake vent 20a of the motor fan 20.

Abstract: An actuating element mounted on an electrical appliance for pivotal movement about a pivoting axis in the switching direction of a switch, in order to switch a function of the electrical appliance by actuating the switch, and comprises a slide with an actuating surface that is guided along a slide path provided on the actuating element to adjust an operating parameter. An operating rocker/slide is provided enabling uniform forces introduced into the operating rocker during displacement of the slide. The actuating element includes the slide path and the pivoting axis extending substantially parallel to each other. The parallel orientation of the pivoting axis and the slide path enables the same length of lever arm to be obtained in relation to the pivoting axis of the actuating element, in each position of the slide, during the introduction of forces into the actuating surface of the slide.

Abstract: A suction device (2) for a hand-held power tool and which is releasably connected with the power tool, includes a suction blower wheel (20) for producing a suction air stream in a suction path (S) and located in the device housing (10), a rolling bearing (28) for supporting the suction blower wheel (20) in the device housing (10), a blower shaft (26) for driving the suction blower wheel (20), and a drive coupling (38) for rotatably frictionally connecting the blower shaft (26) with the drive shaft (42) of the hand-held power tool (4) in a connected condition of the drive shaft (42) with the blower shaft (26).

Abstract: A locking unit of a brush assembly for use with a vacuum cleaner has a release preventing member so that if the brush assembly accidentally falls, the release preventing member conveniently keeps upper and lower housings of the assembly assembled. The brush assembly includes the upper and lower housings. A connector is secured in one of the upper and lower housings and is adapted to direct air in the upper and lower housings towards a suction force generator of the vacuum cleaner. A locking unit rotates on the connector to open and sealingly close the upper and the lower housings. The release preventing member is formed between the connector and the locking unit to prevent release of the locking unit.

Abstract: A vacuum cleaner base plate assembly is provided according to an embodiment of the invention. The base plate assembly includes a base plate adapted to fit to a chassis bottom of a vacuum cleaner. The base plate includes one or more nozzle apertures. The base plate assembly further includes one or more trapped components configured to rest against the base plate. The base plate assembly further includes a skid plate that fits to the base plate and that holds the one or more trapped components against the base plate when the skid plate is assembled to the base plate. The base plate assembly further includes one or more fasteners that removably affix the skid plate to the base plate. The skid plate and the one or more trapped components are removably affixed to the base plate by the skid plate and the one or more fasteners.

Abstract: A device for protecting a motor in a vacuum cleaner is provided. The device includes a lower casing for forming a lower portion of a main body of the cleaner, a motor housing, which is installed in the lower casing and includes the driving motor therein and an upper portion of which is opened upwardly, a filtering device installed onto the lower casing for filtering out foreign materials from introduced air, and an intermediate cover integrally formed with a first cover portion positioned onto an upper portion of the filtering device and a second cover portion for covering the upper portion of the motor housing. Further, a pressure switch for sensing pressure within the motor housing and a damper for introducing external air into the motor housing when the pressure within the motor housing is lowered below a predetermined pressure value are directly installed onto the second cover portion of the intermediate cover.

Abstract: A motor assembly for a vacuum cleaner for providing a user with a quieter environment during a cleaning work, and a vacuum cleaner having the same, is disclosed. The motor assembly includes a motor generating a suction force, an auxiliary filter member disposed on an airflow path connecting the motor to a dust-collecting apparatus for filtering a second time the air discharged from the dust-collecting apparatus, and a motor casing. The motor casing includes a first chamber connected to the dust-collecting apparatus with the auxiliary filter member mounted therein. A second chamber is connected to a discharge opening of the cleaner body and includes the motor mounted therein. A connection path is in fluid communication with the first chamber and the second chamber.

Abstract: A motor mounting assembly includes a motor mount member having a first and second generally opposing sides. A generally U-shaped channel is formed in the second side of the motor mount member extending around its periphery to form a lip extending from the first side of the motor mounting member. The U-shaped channel allows slight movement of the motor mount member in a radial direction to absorb vibrations from a motor attached thereto.

Abstract: A floor care appliance is provided with an improved power management system for controlling the total amount of current provided to at least a first and a second load device of an appliance. The power management system is comprised of a microprocessor, an alternating current voltage source, a voltage regulating circuit, a clamping circuit, at least two load devices, and a MOC and a triac for each of the at least two load devices. The clamping circuit outputs a fixed voltage of 5.7 volts during the positive portion of the ac cycle and a fixed voltage of ?0.7 volts during the negative portion of the ac cycle. The fixed voltages are input to a microprocessor which utilizes these inputs to control the average voltage and the amount of time the current is turned on to each of the at least first and second load devices.

Abstract: The separator has a bottom (12), a cylindrical body with turbine blades (15), and a sealing ring (11) at the upper end. The separator is made of segments or of an integral one piece. The segment of the separator (10) is manufactured as a turbine wheel, where the radial supports (17) have a periphery (16), on which periphery (16) are disposed uniformly and approximately radially turbine blades (15) having a slightly inclined outer part in the counter-rotation direction. The sealing ring (11) has radial supports (17) and a ring (19), and at the bottom of the lid (1a) it has airflow directing means (20) manufactured as extensions inclined from the periphery towards the radius.

Abstract: A household appliance, particularly a vacuum cleaner, has a housing of rigid material and formed with at least two interconnected housing parts and a handle that is also made of a rigid material. The household appliance is rendered especially rigid and the risk of losing grip of the handle of the appliance is reduced by integrating the handle into a stiffening element that is disposed at the intersection of the housing parts and by providing the handle with a cover that is made of a softer material.

Abstract: A grease extractor for removing grease from culinary utensils includes a substantially hollow housing formed of a pair of separable sections. Within the housing is an impeller chamber with a vacuum impeller removably received therein. Attached to the housing and positioned adjacent the impeller is an electric motor. A pivotal suction nozzle is removably attached to the housing and is in communication with the impeller chamber. The nozzle is elongated and tapered towards an inlet. Removably attached to the nozzle inlet is one of a plurality of interchangeable vacuum tips. A grease reservoir is removably secured to the housing and is in communication with the impeller chamber for collecting grease extracted from a culinary utensil or other external device.

Abstract: A self-propelled vacuum cleaner includes a base having a suction inlet. An upright housing is pivotally mounted to the base. A suction source is disposed in one of the base and the upright housing to generate an airflow at the suction inlet. A dust collection chamber is mounted to one of the base and the upright housing and communicates with the suction inlet and the suction source. A drive motor is mounted to the base. A driven wheel is operatively connected to the drive motor. A handle assembly is mounted to the upright housing, wherein the handle assembly includes an upper handle, a handle grip assembly slidably mounted to the upper handle, and a neutral return spring fastened to the upper handle and engaging the handle grip assembly to urge the handle grip assembly to a neutral position.

Abstract: A self-propelled appliance comprises a base, electric motor mounting the base, a handle moveably depending from the base and a drive wheel mounted in the base and operatively connected to the motor. The control circuits comprising an enable switch and a base switch control the communication of power from the power supply to the motor relative to a gripping of the handle by a user of the appliance and a selective positioning of the handle relative to the base.

Abstract: For a motor having a plastic bracket, a single-piece ground strap grounds both the motor's stator and rotor. The ground strap has one end fastened to a bearing retainer of the motor, an opposite end connected to a ground wire, and an intermediate section that is compressed between the stator and the housing. The end connected to the bearing retainer grounds the rotor, and the intermediate section grounds the stator. The ground strap is fastened to the motor using fasteners that already exist in an otherwise identical but ungrounded motor. In some cases, a combination bearing retainer and ground strap is blanked and formed as a unitary piece.

Abstract: A motor housing is provided which is configured to be installed within a main body of a vacuum cleaner. The motor housing includes a dust collection unit capable of filtering out foreign substances. The motor housing further comprises a casing, an upper portion of which is open, a cover hingedly coupled to a side of the casing for opening and closing the casing, a fastening device configured to maintain a state in which the cover of the casing is closed, a suction portion which is formed at a side surface of the casing and through which air can be introduced from the dust collection unit into the motor housing, and an exhaust portion which is formed at the other side surface of the casing and through which the air introduced into the motor housing can be exhausted to the exterior.

Abstract: A vacuum cleaner has a suction motor and fan assembly in a main airflow conduit extending between the dirty air inlet, typically in a surface cleaning head, and a filtration member.

Abstract: Contoured intakes and fan housing assemblies for floor care machines are disclosed. In one embodiment, a contoured intake includes a contoured duct having a passage therethrough. The passage has a cross-sectional area progression that smoothly varies between a first cross-sectional area and a second cross-sectional area. Turbulence within the intake passage may be reduced or inhibited, and noise generated by the airstream within the intake passage may be reduced. In another embodiment, the contoured duct may include a bellmouth substantially surrounding the first open end that may inhibit the separation of the airstream within the intake passage. In a further embodiment, an airflow propulsion device for a floor care machine may include a motor having a drive shaft, a fan operatively coupled to the drive shaft, and a fan housing disposed about the fan and having a transition passage proximate the radially-outward ends of the vanes of the fan.

Abstract: A cleaning machine for cleaning a surface in which cleaning solution is dispensed to the surface and substantially extracted along with the dirt on the surface in a continuous operation is provided. The cleaning machine includes an airflow source that produces an airflow directed out of an outlet. A duct cover covers the outlet. The duct cover includes at least one opening that is sized and oriented to distribute the air evenly across the outlet.

Abstract: A vacuum cleaner includes a handle and a bottom part, the handle being swivel-mounted to the bottom part via an articulated joint. The bottom part includes at least one bottom-side suction opening, a dust chamber bounded by dust chamber walls, a fan unit, and an additional suction opening for a suction hose. A first flow path through the bottom-side suction opening and a separate parallel flow path through the additional suction opening are guided into the dust chamber via a common inlet opening formed in one of the dust chamber walls. The two flow paths are arranged in the bottom part and are guided into the inlet opening together approximately parallel to each other by a flow-guide element located between the two flow paths.

Abstract: A vacuum cleaner having a first housing member with at least one housing wall defining a first housing passage. The first housing passage having an intake end adjacent a subjacent surface and a discharge end opposite the intake end. A second housing member mounted on the first housing member with the second housing member including a filter chamber. The filter chamber has at least one filter chamber wall defining a collection cavity therein. The at least one filter chamber wall has a port communicating with the collection cavity. A vacuum source supported on either the first or second housing member and in fluid communication with the first housing passage and the port. A conduit extends between the discharge end of the first housing passage and the port of the filter chamber. The conduit has a conduit wall defining a conduit passage in fluid communication between the first housing passage and the port.

Abstract: The invention relates to a floor cleaning appliance comprising a suction turbine with a turbine wheel rotatingly drivable about a turbine axis, and a substantially horizontally aligned suction channel via which the suction turbine is in flow communication with a suction opening facing the floor surface to be cleaned, with the suction channel forming a container for collecting dirt and accommodating a dirt filter. In order to design the floor cleaning appliance with as low an overall height as possible, while achieving as strong a suction flow as possible in the area of the suction opening, it is proposed, in accordance with the invention, that the suction turbine be mounted on the suction channel with its turbine axis aligned at an incline to the vertical.

Abstract: 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 agitating a surface to be cleaned. A duct is connected to the nozzle body and located adjacent the agitator chamber. The duct extends parallel to the rotative axis of the agitator.

Abstract: A motor brush dust removing filter for use in a vacuum cleaner in which the vacuum cleaner includes a cylinder-shaped canister, a supporting portion having wheels and attached to a lower portion of the canister, an air outlet formed in a cover so as to discharge air at an upper portion of the cylindrical canister, and a vacuum generating unit for sucking air into the cylindrical canister. The cover has at a center thereof a circular aperture, a circular protrusion or shelf along the aperture, a filter, and a brush dust removing filter having a connection portion. The connection portion of the filter is fastened to a case of a motor brush assembly so that brush dust discharged via an air vent in an upper surface of the brush assembly case is filtered by the filter of the filter unit from air exhausted to the ambient atmosphere.

Abstract: A device for protecting a motor in a vacuum cleaner is provided which includes a lower casing for forming a lower portion of a main body of the cleaner; a motor housing which is installed in the lower casing and includes the driving motor therein, and of which an upper portion is opened upwardly; a filtering means installed onto the lower casing for filtering out foreign materials from introduced air; and an intermediate cover integrally formed with a first cover portion positioned onto an upper portion of the filtering means and a second cover portion for covering the upper portion of the motor housing. Further, a pressure switch for sensing pressure within the motor housing and a damper for introducing external air into the motor housing when the pressure within the motor housing is lowered below a predetermined pressure value are directly installed onto the second cover portion of the intermediate cover.

Abstract: A vacuum cleaner system having an electric powerhead with a first switch actuator component which can be actuated with a user's thumb, to turn on and off the powerhead, and a second switch actuator component which can be actuated with the user's foot, to also turn on and off the powerhead. The first switch actuator component is used when the powerhead is being used in a handheld cleaning mode. The second switch actuator component is used when the powerhead is being used in a floor cleaning mode along with an upright handle attached to the powerhead. An anti-tip over lockout system is incorporated for preventing the powerhead from being accidentally turned on when it is being held in an upside down orientation, such as during cleaning of a beater brush thereof.

Abstract: A battery-powered vacuum cleaner is provided with a battery pack that generates heat and is capable of efficiently cooling the battery pack. The battery pack of the battery-powered vacuum cleaner is cooled by a vacuum cleaner cooling method.

Abstract: A discharging duct of an upright-type vacuum cleaner having side walls and a pair of ribs defining a passage portion, the passage portion connecting an air outlet pipe and a motor driving chamber of a cleaner body. A cover is connected to the duct and seals the passage portion. The cover includes side walls and sealing strips integrally formed thereon to tightly contact the ribs, the sealing strips completely contacting an outer surface of the ribs. Accordingly, the contact area of the cover with respect to the ribs of the duct is lengthened, and sufficient sealing effect is guaranteed without having to use a separate sealing member. Since the need for a separate sealing member is eliminated, the duct is easier to assembly and less costly to manufacture.

Abstract: A vacuum cleaner includes a case having a collection chamber including a filter for removing extraneous matter mixed with air sucked in through main suction channels and an apparatus chamber including a fan motor assembly for generating suction force and discharging intake air behind the collection chamber and a peripheral air suction unit connected between the external surface of the case and the main suction channels or between the external surface of the case and the inside of the collection chamber in addition to the main suction channels, the peripheral air suction unit sucking up the air around the case. It is possible to suck up dust that floats in the air around the vacuum cleaner, caused by air discharged when the vacuum cleaner is used and to purify the air. Accordingly, it is possible to reduce the inconvenience of a user and to improve cleaning efficiency.

Abstract: A vacuum cleaner has a case including a dust chamber filtering dust included in air, an appliance chamber sucking the filtered air from the dust chamber and discharging the air through a discharge port, and a cord chamber storing a wound electrical cord. A fan motor assembly is installed inside the appliance chamber of the case for forcedly sucking the air inside the appliance chamber and discharging the air. An exhaust duct is installed between the fan motor assembly and the discharge port in the case and guiding the air discharged from the fan motor assembly to the discharge port, and a flowing passage is disposed between the dust chamber and the cord chamber so that the air is able to flow therein, whereby overheating of case and of the electrical cord can be prevented and the durability and reliability of the cleaner can be enhanced.

Abstract: A vacuum cleaner having a first housing member with at least one housing wall defining a first housing passage. The first housing passage having an intake end adjacent a subjacent surface and a discharge end opposite the intake end. A second housing member mounted on the first housing member with the second housing member including a filter chamber. The filter chamber has at least one filter chamber wall defining a collection cavity therein. The at least one filter chamber wall has a port communicating with the collection cavity. A vacuum source supported on either the first or second housing member and in fluid communication with the first housing passage and the port. A conduit extends between the discharge end of the first housing passage and the port of the filter chamber. The conduit has a conduit wall defining a conduit passage in fluid communication between the first housing passage and the port.

Abstract: A sub-fractional Horsepower motor, intended for use with a worm on its output shaft, is positioned adjacent a servo actuator housing with the motor shaft disposed adjacent to and oriented generally parallel to the housing. The housing is provided with a resiliently deflectable rear motor mounting stanchion having a camming surface and a front motor mounting stanchion, both preferably formed integrally as a one-piece member with the housing. Upon assembly into the housing, the motor is maintained in its parallel orientation and moved in a single direction normal to the shaft to contact the camming surfaces, on the rear stanchion and deflects and snap-locks into the stanchion and the rear stanchion biases the motor axially such that the opposite shaft end of the motor registers against one surface of the front stanchion.

Abstract: A vacuum cleaner for stationary use includes a canister with an upper housing mounted to a lower housing. Openings in the bottom plate of the upper housing are generally in registry with apertures in the top cover of the lower housing. A gasket seals the abutment between the upper and lower housing. Each of the lower housing and the upper housing are of size and weight to allow their shipment by express or package delivery services. An access port to the interior of the upper housing is located in the sidewall of the upper housing behind the coin mechanism housing.

Abstract: An upright vacuum cleaner (10) includes an upper housing (12) and a nozzle base (14). An underside (20) of the nozzle base includes a main suction opening (26) formed therein which is in fluid communication with the upper housing via a hose assembly (28). The hose assembly is coupled to the nozzle suction opening via a coupling member (40). The coupling member is substantially cylindrical in shape and is dimensioned to be inserted into a receiving portion (42) of the nozzle base. The coupling member includes a first tapered end (60) dimensioned to be frictionally fit within a suction inlet (44) of the receiving portion. A second end (62) of the coupling member is configured to be supported on a rear wall (50) of the receiving portion. A quarter turn thread segment (72) is disposed on the coupling member's peripheral surface.

Abstract: 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 disconnects power shutting off the vacuum cleaner. The vacuum cleaner cannot be restarted until its power source has been manually disconnected and reconnected.

Abstract: The present invention relates to a device for protecting a motor in a vacuum cleaner. The device for protecting the motor in the vacuum cleaner according to the present invention comprises a lower casing 170 for forming a lower portion of a main body of the cleaner; a motor housing 160 which is installed in the lower casing and includes the driving motor 150 therein and of which an upper portion is opened upwardly; a filtering means installed onto the lower casing for filtering out foreign materials from introduced air; and an intermediate cover integrally formed with a first cover portion 122 positioned onto an upper portion of the filtering means and a second cover portion 124 for covering the upper portion of the motor housing.

Abstract: An improved floor cleaning unit is provided. The floor cleaning unit comprises a base for movement along the surface. A nozzle assembly is removably attached to the base for pick up and removal of liquid and dirt. Such attachment is accomplished by providing the nozzle assembly with a slide latch that slidably engages a channel formed in the base.

Abstract: 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 least one of a suction nozzle and an above-the-floor cleaning tool. An exhaust filter housing includes a suction duct and an exhaust plenum, with the suction duct communicating with the chamber outlet. A suction source housing includes an open end communicating with the exhaust plenum and a closed end. A suction source is positioned within the suction source housing to define an annular exhaust flow passageway surrounding the suction source from the housing closed end to the housing open end. The suction source includes a suction inlet communicating with the suction duct and an exhaust outlet communicating with the housing closed end.

Abstract: A vacuum cleaner includes a housing having a housing passage with a passage inlet, air entering through the passage inlet flowing in a first direction and the housing passage directing air flowing therethrough in a second direction which is more than 90 degrees different from the first direction. The vacuum cleaner also includes a blower adapted to be used separately from the vacuum cleaner, the blower having a blower housing with a blower inlet, a blower outlet, and defining a blower passage between the blower inlet and the blower outlet, an impeller disposed in the blower passage to move air between the blower inlet and the blower outlet and a motor mounted to the blower housing and coupled to the impeller to move the impeller. The blower is detachably secured to the housing with the blower outlet disposed in communication with the passage inlet.

Abstract: 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 adapted to sense a change in the position of the vacuum cleaner and to alter the power provided to the at least one motor and fan assembly in response thereto.

Abstract: The invention relates to a removable dust collection module (5) for use with vacuum cleaners as well as a vacuum cleaner incorporating such modules and the method of detachably securing the dust collection module (5) to a vacuum cleaner housing. The dust collection module is slidably received within a vacuum cleaner and comprises a latch member (81) that can move from a first position in which it engages with the clamshell of the vacuum cleaner (1) to retain the dust collection module within the vacuum cleaner, to a second position out of engagement with the vacuum cleaner to allow the dust collection module to be removed. The latch member is displaceable from its first to second position by activation of a slidable release member (7) which is actuated by an end user so as to lock or unlock the dust collection module.

Abstract: An electric vacuum cleaner including a motor-driven blower driven by an inverter circuit. The inverter circuit has a plurality of switching elements. The inverter circuit AC-drives a motor-driven blower according to periodic switching between the switching elements. The periodic switching is based on the detected value of physical quantities related to the electric vacuum cleaner. The electric vacuum cleaner can, in the highest operation mode, undergo a sudden fluid load variation. The electric vacuum cleaner is able to limit, by way of the inverter circuit, the unpleasant sound produced by the vacuum cleaner due to the change in rotation velocity of a rotor of a motor of the vacuum cleaner.

Abstract: A blower having a fan mounted perpendicularly relative to an airflow discharge port. The fan is disposed within a volute formed in the housing at a rear area of the housing. This places the volute slightly behind the user's leg or hip when the blower is suspended or being held by a user along one side of the user's body. This significantly increases the ergonomics, efficiency and comfort of the blower by allowing the blower to rest more comfortably along the user's side without interference from the volute portion of the housing. This also allows the motor to be located directly underneath the handle of the housing to provide a better balance and feel to the housing when the user is holding onto the blower via the handle.

Abstract: Disclosed is a unique and novel air filtrating, self-propelled upright vacuum cleaner. The filtration system utilizes a HEPA-rated air filter as a final filtering element. The disclosed vacuum cleaner contains numerous other features including a self-propelled drive mechanism.

Abstract: An electric cleaning device circulates exhaust air from an electric blower to a floor intake tool. The exhaust air passes through an exhaust guide, formed as one element, in a main cleaning device unit from the electric blower through a hose to the floor intake tool. The exhaust guide is a resilient unitary resin part with sufficient resilience to permit compression for installation. The springback of the exhaust guide seals the exhaust path against leakage.

Abstract: Contoured intakes and fan housing assemblies for floor care machines are disclosed. In one embodiment, a contoured intake includes a contoured duct having a passage therethrough. The passage has a cross-sectional area progression that smoothly varies between a first cross-sectional area and a second cross-sectional area. Turbulence within the intake passage may be reduced or inhibited, and noise generated by the airstream within the intake passage may be reduced. In another embodiment, the contoured duct may include a bellmouth substantially surrounding the first open end that may inhibit the separation of the airstream within the intake passage. In a further embodiment, an airflow propulsion device for a floor care machine may include a motor having a drive shaft, a fan operatively coupled to the drive shaft, and a fan housing disposed about the fan and having a transition passage proximate the radially-outward ends of the vanes of the fan.

Abstract: A vacuum cleaner has a plurality of operating modes is provided. The vacuum cleaner includes a power control system having at least one sensor for automatically sensing a change in the operating mode of the vacuum cleaner and for generating a mode signal. A microprocessor responsive to the mode signal is adapted to vary the power supply signal being supplied to the vacuum cleaner motor and fan assembly.

Abstract: The battery charger (2) recharges the battery (1) when the electrical cord (7) is in use. The battery (1) supplies 12 volts of low voltage electricity to the DC/AC converter (3). The DC/AC converter (3) converts the 12-voltage electricity to a higher powered 115 volts electricity, which supplies the motor (6). The motor (6) turns a gear-driven generator (4), which supplies voltage to the battery charger (2) and recharges the battery (1). To help keep a longer charge in the battery (1), the power is controlled by a toggle switch (9) and relay (8), which disconnects the power supply.

Abstract: A motor is incorporated in a cylindrical body which is a rotary brush. Rotation of a rotor of the motor, directly or via a speed reduction mechanism, drives the rotary brush. Cooling air runs through the cylindrical body so that the motor is cooled and protected. The rotary brush and an electric apparatus using the rotary brush can be downsized and easily.

Abstract: 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 least one of a suction nozzle and an above-the-floor cleaning tool. An exhaust filter housing includes a suction duct and an exhaust plenum, with the suction duct communicating with the chamber outlet. A suction source housing includes an open end communicating with the exhaust plenum and a closed end. A suction source is positioned within the suction source housing to define an annular exhaust flow passageway surrounding the suction source from the housing closed end to the housing open end. The suction source includes a suction inlet communicating with the suction duct and an exhaust outlet communicating with the housing closed end.