Abstract: The invention relates to a coupling (10) which comprises a first component (12) and a second component (14) as well as a spring-loaded entrainer (16) which is spring-loaded and mounted on said first component (12), which second component (14) is furthermore rotatably mounted relative to said first component (12) and can be made to rotate in a first direction of rotation—the freewheeling direction (F)—and in a second direction of rotation—the blocking direction (S)—opposite to said first direction of rotation, which second component (12) furthermore comprises a guide means (18) which is designed so as to prevent a spring-loaded entrainer (16) from engaging said guide means (18) during rotation of said second component (14) in the freewheeling direction (F).

Abstract: A brush vacuum cleaner having a safety shutdown of the drive via an overload brush roller torque detection. A mechanical triggering element via transmission elements actuates an electrical switch for the main switch to shut down the drive above a torque threshold. The switch is additionally connected in parallel by an external actuating element to an on and off position by a spring-loaded control element and a coupling element. Due to the control element, switching the switch into an off position due to overload is transmitted to the actuating element that can be adjusted into an off position. The control element is spring held in the on position in an arrangement for the engagement of the control element, where an unlocking can be set as off position by adjustment of the control element via the actuating element against the spring pressure.

Abstract: A vacuum cleaner head having a housing, supports extending downward from the housing to a support point, a suction opening, an agitator chamber above and in fluid communication with the suction opening, an agitator with a spindle rotatably mounted to the housing and one or more agitating devices projecting from the spindle, a cleaning member movably mounted to the housing to move to a position where it engages the agitator to remove debris from the agitator during rotation of the agitator, and a pedal connected to the housing and movable to a position to place the cleaning member in the cleaning position. The pedal has an activation surface configured to receive an activation force from an operator, and the activation surface is configured such that application of the activation force on the pedal generates a moment force to bias the agitator away from the downward direction.

Abstract: An upright vacuum cleaner comprises a base assembly pivotally connected to an upright assembly. The base assembly comprises an agitator and an agitator drive assembly for selectively driving the agitator. The agitator drive assembly includes a drive disk coupled to a motor shaft, a driven disk which engages the drive disk, and a drive coupling between the driven disk to the agitator. The agitator drive assembly can further include a drive disengager for selectively interrupting the transmission of drive force to the agitator. The agitator drive assembly can further include a speed selector for adjusting the relative speed of rotation of the agitator.

Abstract: A belt drive disengaging assembly for a vacuum cleaner includes a pivoting belt tensioner and an actuator assembly, wherein movement of the actuator assembly selectively pivots the belt tensioner to place tension on a belt coupled between an agitator and source of driving power, thereby coupling the agitator with the source of driving power.

Abstract: A vacuum cleaner brushroll clutch having a motor, clutch assembly input rotated by the motor, brushroll, clutch assembly output to rotate the brushroll, drive clutch, and starter clutch. The drive clutch is connected to the clutch assembly output and moveable between a first position in which it does not directly contact the clutch assembly input and a second position in which it directly contacts the clutch assembly input to transmit a first torque directly from the clutch assembly input to the clutch assembly output. The starter clutch is connected to the drive clutch and moveable between a first position in which it does not engage the clutch assembly input and a second position in which it engages the clutch assembly input to transmit a second torque from the clutch assembly input to the drive clutch to move the drive clutch into the second drive clutch position.

Abstract: A device for performing an action on a surface comprises at least one movably arranged functional body (21, 22), driving means for driving the functional body (21, 22), main safety means for decoupling the driving means from the functional body (21, 22) when a load exerted by the functional body (21, 22) in the direction of the driving means under the influence of resistance forces experienced by the functional body (21, 22) exceeds a predetermined maximum value, and additional safety means (40) which are movably arranged in the vicinity of the functional body (21, 22), and which are capable of exerting loads on the main safety means to different extents in different positions, at a side of the main safety means associated with the functional body (21, 22). The additional safety means may comprise a bar (40) having a non-circular cross-sectional area, which is rotatable about its longitudinal axis (41).

Abstract: A vacuum cleaner comprises a user-controllable clutch assembly for selectively engaging an agitator assembly. The clutch assembly generally comprises an axially displaceable drive member that is selectively engageable by rotating ramps that engage stationary cam lobes. In one embodiment, the clutch module is mounted to the foot housing and is intermediately connected between the vacuum motor/fan shaft and the agitator. In a second embodiment, the clutch module is mounted axially on the agitator shaft. In a third embodiment, a linkage interconnects a handle detent pedal to the clutch module to automatically engage the clutch when a user depresses the detent pedal.

Abstract: A vacuum cleaning appliance includes a vacuum cleaning head having a suction opening, the head having a first state and a second state, a fan unit for drawing an air flow through the suction opening, and a control assembly for controlling the state of the head.

Abstract: A vacuum cleaner includes a floor engaging portion and a handle portion pivotally mounted to the floor engaging portion. The handle portion includes an input device. An agitator is rotatably mounted in the floor engaging portion to agitate a floor surface being cleaned. A first motor has an output shaft and an agitator belt selectively drivingly connecting the motor to the agitator. A tensioning arm pivotally mounts to the floor engaging portion for motion between an agitator-on position in which the tensioning arm engages the agitator belt, to place the agitator belt under tension whereby the agitator belt drives the agitator, and an agitator-off position in which the tensioning arm does not engage the agitator belt, to place the agitator belt in a slack condition whereby the agitator belt does not drive the agitator.

Abstract: A vacuum cleaner clutch assembly having an input driven by a motor, an output to drive an agitator, a starter clutch and a drive clutch. The starter clutch moves between an engaged position in which it receives a first drive torque from the input, and a disengaged position in which it receives substantially no torque directly from the input. The drive clutch is moveable between an engaged position in which it receives a second drive torque from the input, and a disengaged position in which it receives substantially no torque directly from the input. When engaged, the starter clutch is coupled to the drive clutch to transmit the first drive torque to the drive clutch to move the drive clutch into the engaged drive clutch position. When engaged, the drive clutch is coupled to the clutch assembly output to transmit the second drive torque to the output.

Abstract: A floor care appliance has a body including a control assembly and a nozzle assembly, a rotary agitator carried on the nozzle assembly and a dirt collection vessel carried on the body. In addition a suction generator is carried on the body. The suction generator includes a fan and a drive motor. A belt operably connects the drive motor to the rotary agitator. An agitator drive interrupt mechanism includes an idler pulley support and first and second idler pulleys carried on the idler pulley support. The idler pulley support is displaceable between a first position wherein the idler pulleys tension the belt to provide drive to the rotary agitator and a second position wherein the idler pulleys de-tension the belt and interrupt drive to the rotary agitator.

Abstract: An upright vacuum cleaner includes a nozzle assembly having a suction inlet and a rotary agitator. A canister assembly is pivotally connected to the nozzle assembly. The vacuum cleaner also includes a suction generator and a dirt collection vessel. Still further, the vacuum cleaner includes a clutch assembly for controlling power transmission from the drive motor of the suction generator to the rotary agitator. The clutch assembly includes a pulley driven by the drive motor, a first clutch element connected to the pulley, a second clutch element connected to the rotary agitator and an actuator for displacing the second clutch element between a first, engaged position and a second, disengaged position.

Abstract: A vacuum cleaner comprises a user-controllable clutch assembly for selectively engaging an agitator assembly. The clutch assembly generally comprises an axially displaceable drive member that is selectively engageable by rotating ramps that engage stationary cam lobes. In one embodiment, the clutch module is mounted to the foot housing and is intermediately connected between the vacuum motor/fan shaft and the agitator. In a second embodiment, the clutch module is mounted axially on the agitator shaft. In a third embodiment, a linkage interconnects a handle detent pedal to the clutch module to automatically engage the clutch when a user depresses the detent pedal.

Abstract: A vacuum cleaner motor assembly includes a motor in a bucket, configured so as to drive a fan to provide airflow. An epicyclic gear system is attached to the output shaft of the motor, to produce an output of reduced rotational speed. The output is employed to drive an agitator via a belt. The belt is driven at a reduced rotational speed to that achievable hitherto, and thus there is reduced wear on the belt. The provision of a gear arrangement mounted directly to the motor casing provides a compact assembly. One of the epicyclic gears, such as the ring gear, is arranged to slip with respect to a clutch member if the agitator becomes jammed. An actuator switches off the motor if the heat of friction of the slipping gear exceeds a predetermined value, or if the slipping gear rotates at a speed above a predetermined value. Thus, the motor switches off before damage occurs to any of the components of the system.

Abstract: An overload clutch (10) for a rotating agitation member (11) for a surface cleaning machine includes a clutch member (12) connected to the agitation member (11) to rotate therewith, a coupling member (20) rotatable relative to the clutch member (12), and a torque lever (40) having an end pivotally mounted to the coupling member (12). The other end of the torque lever (40) is biased to engage with the clutch member (12) such that the agitation member (11) is rotated together with the coupling member (20) when a torque load from the agitation member (11) is not greater than a preset level. The torque lever (40) pivots outward away from the clutch member (12) and disengages from the clutch member (12) to disconnect the torque lever (40) from the clutch member (12) when the torque load from the agitation member (11) is greater than the preset level.

Abstract: A drive belt shifting arrangement for a rotatable brush roller of an upright cleaner where the shifter has an idler pulley for arcuate movement within the loop of the belt between the roller and the motor occasioned by pedal actuation. The same pedal action by the user alternately cams the belt onto the idler pulley to discontinue roller rotation or to permit its movement back to the motor shaft to allow roller rotation.

Abstract: A floor care appliance has a body including a control assembly and a nozzle assembly, a rotary agitator carried on the nozzle assembly and a dirt collection vessel carried on the body. In addition a suction generator is carried on the body. The suction generator includes a fan and a drive motor. A belt operably connects the drive motor to the rotary agitator. An agitator drive interrupt mechanism includes an idler pulley support and first and second idler pulleys carried on the idler pulley support. The idler pulley support is displaceable between a first position wherein the idler pulleys tension the belt to provide drive to the rotary agitator and a second position wherein the idler pulleys de-tension the belt and interrupt drive to the rotary agitator.

Abstract: A vacuum cleaner comprises a motor-driven rotatable agitator coupled with a shaft of the motor through a belt. A belt disengaging device for a vacuum cleaner comprises a pin that is movable through an arc of less than 180° between an engaged position and a disengaged position, at which the pin lifts the belt off the motor shaft. An actuator for the belt disengaging device includes a first exterior portion for user access and is moveable between a first and second position. A linkage pivotally connected to the actuator and the mechanically coupled to the pin moves the pin between the engaged and disengaged positions as the actuator moves between the first and second positions.

Abstract: A vacuum cleaner overload clutch having an overload cog, a spring mount, and an overload spring. The spring is engaged with the cog to provide torque transfer, and disengaged from the cog to terminate torque transfer. The spring may not reengage until the parts stop rotating. A weight may be provided to bias the spring into the disengaged position, and the spring may have an engagement portion that is captured between the overload cog and a wall on the spring holder when the clutch is engaged. The clutch may be part of a system including a motor and agitator, and may have other features, such as a graduated engagement clutch.

Abstract: A vacuum cleaner clutch assembly having an input driven by a motor, an output to drive an agitator, a starter clutch and a drive clutch. The starter clutch moves between an engaged position in which it receives a first drive torque from the input, and a disengaged position in which it receives substantially no torque directly from the input. The drive clutch is moveable between an engaged position in which it receives a second drive torque from the input, and a disengaged position in which it receives substantially no torque directly from the input. When engaged, the starter clutch is coupled to the drive clutch to transmit the first drive torque to the drive clutch to move the drive clutch into the engaged drive clutch position. When engaged, the drive clutch is coupled to the clutch assembly output to transmit the second drive torque to the output.

Abstract: A base has wheels, including a drive wheel, for wheeling the base over a floor. A nozzle is fixed to the base for a fan in the base to draw air from the floor through the nozzle. A handle is connected to the base for propelling the base by manually applying a force to the handle. A drive assist motor, which is not configured to drive the fan, has an output shaft coupled to the drive wheel. The controller is operative in a driving mode to power the motor to rotate the drive wheel in a direction corresponding to a direction of the force applied to the handle. The controller is operative in a non-driving mode to refrain from powering the motor to rotate the drive wheel.

Abstract: A brush apparatus capable of controlling a drive of a brush member with a simplified structure and a vacuum cleaner having the same. The vacuum cleaner includes a rotatable brush member, a driving unit to drive the brush member, and a blocking unit disposed between the brush member and the driving unit to selectively block a driving force transmitted between the brush member and the driving unit. The driving unit includes a suction motor to generate a suction force, and a single continuous connecting belt connecting the suction motor and the blocking unit.

Abstract: A head (10) for a suction cleaner is described. The head (10) including: a lower housing portion (12); an upper housing portion (14); and a rotatably mounted brush bar (26) mounted within the housing portions (12, 14). The upper housing portion (14) is pivotable relative to the lower housing portion (12) between a closed position for use and an open position in which the brush bar (26) is exposed from above and the front.

Abstract: A driving control apparatus of a rotary brush, which controls a drive of the rotary brush disposed in a suction body of a vacuum cleaner, is disclosed. The driving control apparatus includes a fixing bracket disposed in a suction body of a vacuum cleaner, a link unit pivotably connected to the fixing bracket, a pedal unit connected to one side of the link unit, and a pulley unit to move in combination with the link unit and to connect or separate a driving belt to or from a driving shaft, and the pulley unit is rotated in the same direction as a rotating direction of the driving belt when coming in contact with the driving belt.

Abstract: The present disclosure relates to a rotating brush driving control apparatus. The rotating brush driving control apparatus includes a supporting bracket disposed in a suction brush assembly; a moving member slidably and elastically disposed in the supporting bracket; a lever disposed above a driving belt, the lever having an end rotatably disposed at a side of the supporting bracket; a tension spring elastically connecting the moving member and the lever; and a locking member disposed below the moving member, the locking member locking or unlocking the moving member in turn according as the moving member is downwardly pressed; wherein, when the locking member locks the moving member, the other end of the lever press the driving belt by the tension spring so that the driving belt transmits the driving power to the rotating brush.

Abstract: An upright vacuum cleaner comprises a base assembly pivotally connected to an upright assembly. The base assembly comprises a foot-actuated belt drive disengaging mechanism and a ratchet operated nozzle height adjustment mechanism.

Abstract: An upright vacuum cleaner is provided having a suction nozzle height adjustment arrangement controlled by a rotary mode control member located on the upper housing. The rotary mode control member controls a suction nozzle height adjustment motor and a rotary agitator drive disconnect arrangement. A wheel tensioner located on an idler arm is operatively connected to a cam on the suction nozzle height adjustment motor which tensions and de-tensions the agitator drive belt to control the rotary agitator. The rotary mode control member could have discrete settings for the various floor surfaces to be cleaned including bare floors and carpet of varying pile heights. Alternately, the rotary mode control member could be variable so that an infinite number of suction nozzle height settings can be selected.

Abstract: The present disclosure relates to a rotation brush driving apparatus for a vacuum cleaner capable of selectively transmitting power of a motor to a rotation brush in a simple structure. The rotation brush driving apparatus for a vacuum cleaner according to the present disclosure includes a motor for generating suction force; a rotation brush; a belt for transmitting rotation force of the motor to the rotation brush; and a driving selection unit installed rotatably around the rotation shaft of the motor, for selectively transmitting the rotation force of the motor to the rotation brush by selectively contacting the belt with the rotation shaft of the motor.

Abstract: A bare floor switch assembly for a power head or an upright vacuum cleaner includes a mounting bracket, an idler and idler arm pivotally mounted to the mounting bracket, a biaser for biasing the idler and idler arm to an agitator drive interrupting position and a switch body for engaging and locking the idler arm into an agitator driving position.

Abstract: A brush apparatus capable of controlling a drive of a brush member with a simplified structure and a vacuum cleaner having the same. The vacuum cleaner includes a rotatable brush member, a driving unit to drive the brush member, and a blocking unit disposed between the brush member and the driving unit to selectively block a driving force transmitted between the brush member and the driving unit. The driving unit includes a suction motor to generate a suction force, and a single continuous connecting belt connecting the suction motor and the blocking unit.

Abstract: An appliance comprises a moving member, a drive motor, and a linkage drivingly connecting the drive motor to the moving member, the linkage including first and second magnetic coupling members The magnetic clutch may have first and second magnetic coupling members. Each magnetic coupling member has a first surface, which includes at least first and second magnets. Each of the first and second magnets have an outer pole and the outer poles of each of the first magnets and the outer poles of each of the second magnets are of reverse polarity, wherein at least one of the first and second magnetic coupling members is moveably mounted with respect to the other of the first and second magnetic coupling members in a direction perpendicular to the first faces.

Abstract: A liquid extraction cleaner includes a solution dispensing system, a liquid recovery system, and an agitation brush assembly. The solution dispensing system includes a supply tank removably affixed to a housing and fluidly connected to a fluid distributor through a trigger-operated manual spray pump. The liquid recovery system includes a recovery tank removably mounted to the housing adjacent to the supply tank. An air liquid separator is provided within the recovery tank. Another assembly within the housing provides a vacuum source, where working air comes from the recovery tank to an inlet between a motor and an impeller. The agitation brush assembly is removably mounted in a lower forward portion of the housing.

Abstract: An overload coupling is provided for the limited transfer of torque in a floor cleaning device. A drive element and a driven element are arranged concentrically to one another, thereby forming an intermediate space. The intermediate space accommodates at least one coupling element which transfers torque and can be moved from the intermediate space into an alternative space contrary to the action of an elastic restoring force when an overload occurs. The overload coupling has an overload element which is spring-loaded in the direction of rotation of the coupling element and releases the alternative space for the coupling element when an overload occurs.

Abstract: A bare floor switch assembly for a power head or an upright vacuum cleaner includes a mounting bracket, an idler and idler arm pivotally mounted to the mounting bracket, a biaser for biasing the idler and idler arm to an agitator drive interrupting position and a switch body for engaging and locking the idler arm into an agitator driving position.

Abstract: The present invention relates to an apparatus of driving an agitator of an upright vacuum cleaner. It includes a fixing panel and a rotation guide which are positioned at an outer side of the driving shaft roller and guided to move coaxially with the driving shaft roller so as to conveniently switch a power transmitted to an agitator by a user's foot; a support sphere and a roller support part which are formed in a direction of an axis parallel with the driving shaft roller on an outer circumference of the rotation guide; an idle roller which is inserted into the roller support part; a manipulating means connected with the support sphere, for controlling the rotation guide so that the elastic member is selectively wound around the driving shaft roller or the idle roller; and a stop means for maintaining a position of the rotational driving part stably.

Abstract: An upright vacuum cleaner includes a housing, a nozzle opening in the housing and a dust collector carried on the housing. A suction fan is also carried on the housing. The suction fan draws air, dirt and debris from a surface to be cleaned through the nozzle opening to the dust collector. The upright vacuum cleaner also includes a first rotary agitator and a second rotary agitator, both carried on the housing. A drive motor carried on the housing drives the first rotary agitator through the belt and pulley assembly. A gear drive assembly drivingly connects the first rotary agitator to the second rotary agitator.

Abstract: The present invention relates to an apparatus of driving an agitator of an upright vacuum cleaner. It includes a fixing panel and a rotation guide which are positioned at an outer side of the driving shaft roller and guided to move coaxially with the driving shaft roller so as to conveniently switch a power transmitted to an agitator by a user's foot; a support sphere and a roller support part which are formed in a direction of an axis parallel with the driving shaft roller on an outer circumference of the rotation guide; an idle roller which is inserted into the roller support part; a manipulating means connected with the support sphere, for controlling the rotation guide so that the elastic member is selectively wound around the driving shaft roller or the idle roller; and a stop means for maintaining a position of the rotational driving part stably.

Abstract: A bare floor switch assembly for a power head or an upright vacuum cleaner includes a mounting bracket, an idler and idler arm pivotally mounted to the mounting bracket, a biaser for biasing the idler and idler arm to an agitator drive interrupting position and a switch body for engaging and locking the idler arm into an agitator driving position.

Abstract: The invention provides a clutch mechanism (200) having a driven pulley (32) and a drive pulley (34) to which a load is applied, the clutch mechanism (200) having an engaged position in which torque applied in use to the driven pulley (32) is transmitted to the drive pulley (34), and a disengaged position in which torque applied in use to the driven pulley (32) is not transmitted to the drive pulley (34), wherein the clutch mechanism (200) also has override means (238, 242) by which at least a proportion of the torque applied to the driven pulley (32) is absorbed when the load applied to the drive pulley (34) exceeds a predetermined value. The override means comprising a pair of detent plates (238, 242), and at least one ball-bearing (248) being held captive between the detent plates (248, 242).

Abstract: A vacuum cleaner of the type which includes a canister which when upright the vacuum cleaner is operated as an upright vacuum cleaner, or, when tilted down, the vacuum cleaner is operated as a canister-type vacuum cleaner.

Abstract: A vacuum cleaner includes a housing incorporating a handle assembly and a nozzle assembly, a suction fan and cooperating suction fan drive motor carried on the housing, a rotary agitator held in the nozzle assembly, an agitator drive motor carried on the housing and a motor control and protection circuit. The motor control and protection circuit includes a handle switch to de-energize the agitator motor when the handle is displaced to an upright storage position. The motor control and protection circuit may also include an above-floor switch and cooperating activation to de-energize the agitator drive motor when the nozzle assembly is displaced above the floor for bare floor cleaning. Additionally, the motor control and protection circuit may include a hose switch and activator, a selection switch and activator, a circuit breaker and a temperature sensor switch.

Abstract: A device for removing dust and rubbish includes a casing provided with a suction opening, a rotating brush, a turbine operationally connected to the brush, a suction nozzle located between the brush and the turbine, and a suction pipe connected to a suction device; the brush and the turbine are rotatably supported, respectively, in a first and in a second housing; the device also includes at least a bypass duct and a first valve, the bypass duct being designed for bypassing the second housing and the turbine, the first valve being able to engage with the suction nozzle and with the bypass duct for closing the suction nozzle and opening the bypass duct. (FIG.

Abstract: A vacuum-cleaner nozzle has a housing forming a turbine compartment and a brush compartment and having opening into the turbine compartment an outlet adapted for connection to a fan input and a slot opening into the brush compartment. A brush rotatable in the brush compartment has bristles projecting from the slot. A turbine in the turbine compartment is oriented such that air flow from the slot to the outlet rotates the turbine. A drive or transmission couples the turbine to the brush for rotating the brush when the turbine rotates. A button is displaceable on the housing between an outer position and an inner position and a spring urges the button into the outer position. A link between the button and the drive arrests rotation of the brush on displacement of the button into the outer position. This button is remote from the slot and the housing is formed with a handle adapted to be held by a hand of a user.

Abstract: A vacuum cleaner including a nozzle base comprising a primary suction opening and a suction source. A dust cup assembly is releasably secured to the nozzle base. The dust cup assembly comprises a first inlet and a door positioned adjacent the inlet to selectively open and close the inlet. A rotatable brushroll assembly is positioned adjacent the primary suction opening. A three position control assembly is located on the nozzle base. The control assembly comprises a selector switch and a slide bar. Movement of the selector switch to first and second positions moves the slide bar out of engagement with a finger extending from the door allowing the door to open due to suction air. Movement of the selector switch to a third position moves the slide bar into engagement with the finger to prevent the door from opening due to suction air.

Abstract: A self-propelled vacuum cleaner is provided having an upper handle portion and a carriage pivotally mounted to a lower end of the handle portion for pivotal motion relative the handle portion about a horizontally extending carriage axis. A transmission drivingly connected to at least one drive wheel mounted on the carriage, whereby the at least one drive wheel propels the vacuum cleaner over a floor surface. A nozzle body pivotally mounted to the carriage for pivotal motion relative the carriage about a generally horizontally extending nozzle axis, the nozzle body having a downward facing suction opening. The nozzle axis being generally horizontally offset from the carriage axis.

Abstract: A vacuum cleaner head has a housing having a turbine chamber and a connection tube connecting the turbine chamber to a suction aggregate of a vacuum cleaning machine. The housing has a suction opening and the turbine chamber has an inflow opening communicating with the suction opening. Air flow is sucked in by the suction aggregate through the suction opening and the inflow opening. A rotary roller brush is mounted in the housing close to the suction opening such that bristles of the roller brush project outwardly through the suction opening when the brush is in a lowest position. An air turbine is mounted in the turbine chamber such that the air turbine is acted upon by the air flow passing through the inflow opening. A device is provided for axially displacing the air turbine relative to the inflow opening when the power uptake of the roller brush is reduced.

Abstract: Device for driving/stopping a brush of a vacuum cleaner, including a driving motor built in a body of the vacuum cleaner, a brush fitted in front of the driving motor in the body of the vacuum cleaner, a support frame fixed inside of the body and having the motor shaft of the driving motor rotatably passed through a surface thereof, a first link of a circular arc cam form rotatably mounted on an outer circumference of the motor shaft passed through the support frame centered on the motor shaft without interference with the motor shaft and having a belt shaft fitted at a fore end thereof, a belt for connecting between the belt shaft and the brush, a change over lever fitted at one side of rear of the motor shaft in the support frame to be rotatable centered on a hinge shaft and having a foot step for applying a stepping force thereto for connecting/disconnecting a driving force of the motor to the brush, a second link of an arch form connected between a middle of an arm of the change over lever and the belt sh

Abstract: A vacuum cleaner (10) includes a housing (14), an agitator brush (40) mounted for relative rotation in the housing (14) and a motor (30) including a shaft (42) for driving the agitator brush (40). A flexible belt (44) connects the drive shaft (42) of the motor (30) to the agitator brush (40). Further, a mechanism (50) is provided for disconnecting the belt (44) from either the motor drive shaft (42) or the agitator brush (40). That mechanism (50) includes an element or lug (54) carried on a shifter (52) and an actuator (56) for selectively displacing the shifter (52) and element/lug (54) carried thereon between a first position wherein the element/lug (54) is out of engagement with said belt (44) and a second position wherein the element/lug (54) engages the belt (44), thereby forcing the belt (44) out of engagement with either the motor drive shaft (42) or the agitator brush (40).

Abstract: A vacuum cleaner comprises a floor nozzle housing an agitator for stirring dust, a handle sector containing a dust bag and a fan motor for sucking dust, and a power transmission device for transmitting the driving force of the fan motor to the agitator. The handle sector is tiltably attached to the floor nozzle at a rear section. The power transmission device comprises a driving pulley fixed to the agitator, an idling pulley attached adjacent to the driving pulley and rotating free from the agitator, and a belt provided between the fan motor and one of the driving pulley and the idling pulley. A switching lever is provided for switching the position of the belt to the driving pulley or to the idling pulley, which motion is coupled with the tilting motion of the handle sector. The driving force of the fan motor is conveyed to the agitator in accordance with the tilting motion of the handle sector.