Abstract: An agitator including an elongated main body configured to rotate about a pivot axis, one or more soft cleaning features coupled to and extending over a substantial portion of a surface of the elongated main body, the one or more soft cleaning features defining at least one channel, and at least one deformable flap disposed at least partially within the at least one channel and extending from the elongated main body. The deformable flap may extend beyond an outer surface of the soft cleaning features. The channel may have a generally U shape and/or V shape. The channel may be configured to allow the resiliently deformable flap to move front to back as the agitator rotates about the pivot axis.

Abstract: A surface cleaning apparatus includes a rotatably mounted brush associated with a dirty air inlet. A plurality of bristles extend outwardly from a radial outer surface of the rotatably mounted brush. A heating element that is positioned exterior to the brush core.

Abstract: A vacuum cleaner head with a housing having a front end, a back end, a lower surface extending from the front end to the back end, and a suction opening through the lower surface. An agitator chamber is the suction opening, and a suction passage extends from the agitator chamber towards the back end. An agitator having a spindle and agitating devices is rotatably mounted to the housing. A cleaning member is movably mounted to the housing to move between a first position in which it does not engage the agitator, and a second position in which it engages the agitator to remove debris from the agitator during rotation of the agitator. A pedal extends from the back end of the housing and moves between a first pedal and a second pedal position to place the cleaning member in the second cleaning member position.

Abstract: A vacuum sweeping machine having a chassis, which is configured for moving the vacuum sweeping machine over a surface to be cleaned, a sweeping roller, a suction extraction device, a side broom and a connecting line. The sweeping roller, which is driven in rotation, is mounted on the chassis and surrounded by the sweeping-roller housing. The sweeping roller extends along its rotational axis between a first and a second side wall of the sweeping-roller housing. The suction extraction device has a suction side that is connected to the sweeping-roller housing for the purpose of suction extraction of dust-laden air. The side broom, which is driven in rotation and mounted on the chassis, is surrounded by an enclosure. The connecting line is provided between the sweeping-roller housing and the enclosure. Coupling of the connecting line to the sweeping-roller housing is provided in one of the side walls.

Abstract: A nozzle assembly usable with an upright vacuum cleaner, comprising: a nozzle assembly body; a drum brush unit disposed in the nozzle assembly body, the drum brush unit having a drum brush disposed to move dirt or dust adhered to a surface to be cleaned while coming in rotational contact therewith; a subsidiary brush unit disposed in front of the drum brush unit, and the subsidiary brush unit having a subsidiary brush to preliminarily move the dust or dirt adhered to the surface to be cleaned before the drum brush moves the dirt or dust adhered to the surface to be cleaned; and a locking unit disposed to the drum brush unit to selectively fix the subsidiary brush unit to the drum brush unit, wherein the subsidiary brush unit is rotatably connected to the drum brush unit to selectively maintain a contact state or a non-contact state to the surface to be cleaned, and, when the subsidiary brush unit maintains the contact state to the surface to be cleaned, the locking unit fixes the subsidiary brush unit to the

Abstract: A cleaner head for a vacuum cleaning appliance includes a main body having a downwardly-directed suction opening and at least one surface engaging support member, a front agitator and a rear agitator, with each agitator being rotatable relative to the main body, and a mechanism for rotating the front agitator and the rear agitator. The front agitator has a relatively flexible pile and the rear agitator has relatively stiff bristles arranged to dislodge matter from the pile of the front agitator. The pile of the front agitator and the at least one surface engaging support member extend downwardly beyond the bristles of the rear agitator so as to space the bristles of the rear agitator from a relatively hard surface to be cleaned.

Abstract: A modular auxiliary brush assembly for a vacuum cleaner includes a mounting bracket coupled to the vacuum cleaner, a spring-biased brush head, and a shaft which mounts the brush head to the mounting bracket. The spring-biased brush head is vertically adjustable to accommodate cleaning surfaces of varied heights and textures. The spring-biased brush head includes a tread which contacts a surface to be cleaned and rolls the brush head relative to the vacuum cleaner when the vacuum cleaner moves over the surface.

Abstract: An agitator includes an agitator body rotatably accommodated within a suction nozzle having a suction port, and comprising a plurality of bristles planted in an outer circumference, and an air moving device formed on the outer circumference of the agitator body to cause air to move in a space defined between the agitator body and an inner wall of the suction nozzle, if the agitator body is rotated.

Abstract: A control system for a vacuum cleaner is disclosed. The control system includes a control pad for generating a number of user inputs. The control system further includes a serial controller for reading the state of the number of inputs and generating serial data in response thereto. The control system yet further includes a processor adapted to receive the serial data and generate control signals that controls a number of electric devices on the vacuum cleaner. A method of operating a vacuum cleaner is also disclosed.

Abstract: The claimed carpet cleaning apparatus incorporates recesses in a rigid surface of a roller, a hand-operated cleaning device, or a rigid disk. The rigid surface compresses the fibers of the soft surface as the device and the recesses decompress the fibers. The repeated compression and decompression, preferably in combination with a cleaning compound, provide the mechanical action necessary for removal of foreign material.

Abstract: The claimed carpet cleaning apparatus incorporates recesses in a rigid surface of a roller or in a rigid disk. As the roller or disk rotates or is moved across the soft surface to be cleaned, the roller or disk presses downward on the soft surface and compresses it. The soft surface decompresses to the original position when the soft surface is in contact with a surface of a recess and recompresses when the roller or disk presses downward again. The compression, decompression, and recompression, preferably in combination with a cleaning compound, provide the mechanical action necessary for removal of foreign material.

Abstract: A cleaning head for use with a floor cleaning machine comprises first and second cleaning tools, at least one motor and a cleaning tool support. The at least one motor is configured to respectively drive rotation of the first and second cleaning tools about first and second horizontal axes. The first and second cleaning tools each have an exterior cleaning surface configured to engage the floor during floor cleaning operations. The cleaning tool support is configured to support the first and second cleaning tools for movement of the first and second horizontal axes relative to each other in a plane that is transverse to the first and second horizontal axes. Another embodiment of the invention is directed to a floor cleaning machine that includes embodiments of the cleaning head.

Abstract: A cleaning machine for cleaning a surface is provided. The cleaning machine includes a base assembly that moves along the surface and a liquid distribution system associated with the base assembly for distributing the cleaning solution to the cleaning surface. A suction nozzle assembly is mounted to the base assembly and includes a front nozzle portion and a rear nozzle portion. The front nozzle portion defines a fluid flow path having an inlet opening and an outlet opening and the rear nozzle portion defines a fluid flow path having an inlet opening and an outlet opening. A suction source is in fluid communication with the suction nozzle for applying suction to draw the cleaning solution and dirt from the surface and through the suction nozzle assembly. The fluid flow path of the front nozzle portion is closed in response to the base assembly moving in one of the forward direction and rear direction.

Abstract: A brush of a cleaner comprising: a rotation shaft rotatably supported at a lower surface of a body; a brush hub fixed to the rotation shaft; and brush hair mounted at an outer circumference surface of the brush hub for sweeping dust and contamination of a floor, wherein the brush hair is composed of a first row arranged toward a shaft direction of the brush hub and divided into a first hair portion which is not contacted with a floor and a second hair portion which is contacted with the floor, and a second row sequentially arranged with the first row and divided into a first hair portion which is contacted with the floor by facing to the first hair portion of the first row and a second hair portion which is not contacted with the floor by facing to the second hair portion of the first row.

Abstract: Catching grooves (34) extending in the axial direction are formed in the cylindrical outer surface of a brush base (35) that has a slender, substantially cylindrical shape and made of a twistable material. Brush attaching portions (43) of brush members (41) and blade attaching portions (47) of scraping members (42) are respectively secured in the catching grooves (34) so that axially aligned bristles (44) of each brush member (41) and an axially extending blade (46) of each scraping member (42) project from the cylindrical outer surface of the brush base (35). Receiving members (53) are respectively fitted to both ends of a shaft (51) inserted through a shaft insertion hole (39) of the brush base (35). By rotating the receiving members (53) in opposite directions, the brush base (35) is twisted in a spiral and secured. By eliminating the necessity of forming the brush base (35) in a twisted shape beforehand by means of twist extrusion molding, the invention facilitates production of the brush base (35).

Abstract: A suction nozzle for a floor care appliance such as an upright vacuum cleaner having at least a first channel located above an agitator to carry air and dirt to a suction passageway. The cleaner has several embodiments, one of which has a single channel and a single agitator. Another embodiment has front and rear suction ducts, a channel, and a single agitator. Yet another embodiment has the single channel and dual agitators. Still yet another embodiment has front and rear suction ducts and dual agitators. Further yet still, another embodiment has front and rear suction ducts, a channel, and dual agitators. Several embodiments of an agitator drive assembly are provided using various means to provide rotary power to the agitator(s).

Abstract: A beater bar assembly for use within a vacuum cleaner is disclosed. The beater bar assembly is capable of both axial oscillation (horizontal motion) and axial rotation, thereby providing an efficient cleaning motion.

Abstract: A vacuum cleaner brushroll characterized by a bristle tufted arrangement that forms multiple dwell positions around the brushroll. In each dwell position, the majority of bristle tufts along the length of the spindle are out of sweeping contact with the carpet which allows the carpet to drawn upwardly toward the mouth of the vacuum cleaner nozzle. The up and down carpet movement that occurs during brushroll rotation enhances its cleaning performance.

Abstract: A vacuum cleaner brushroll having angled tuft patterns effective to increase cleanability performance of the vacuum. The brushroll comprises a spindle and at least two patterns of bristled tufts. The patterns may be helical shaped rows. The rows may define tuft pairs, wherein each tuft in a pair is equidistant from a spindle each and shares a common sweeping path. A majority of the pairs are formed by tufts that are alternatively positioned at acute and obtuse angles to the spindle axis of the brushroll. Two tufts within a pair may be positioned at supplementary angles.

Abstract: An agitator for use with cleaning machines, as well as methods for making the same, are shown and described. The agitator is configured to facilitate the removal of elongated fibers therefrom. In one embodiment, the agitator has a rotatable member with opposing first and second ends, an axis of rotation extending between the first and second ends, and an external surface extending at least partially between the first and second ends. A number of projections are attached to the external surface of the agitator. One or both of the ends of the agitator are configured to rotatably engage the cleaning machine, such as at a bearing or other connector. The external surface of the rotatable member has a first portion that is substantially cylindrical about the axis of rotation, and a second portion separate from the first portion that has at least a first depression.

Abstract: A carpet cleaning apparatus is disclosed with a loop agitator. The loop agitator comprises a spindle with a plurality of flexible loops attached to the spindle. A blade is provided in close relative proximity to the agitator for severing hair and other fibers that become entangled on the agitator.

Abstract: A power brush assembly for vacuum cleaners is disclosed. In the power brush assembly, a casing is set in the suction part of a vacuum cleaner and defines a suction nozzle used for sucking dust-laden air under pressure into the suction part of the vacuum cleaner. A power brush is set within the casing such that the brush is rotatable and reciprocable to the left and right. This power brush is used for brushing dust and impurities on a target surface. A drive motor generates a rotating force for allowing the power brush to rotate and reciprocate to the left and right within the casing. A power transmission mechanism connects the drive motor to the power brush so as to transmit the rotating force of the drive motor to the power brush.

Abstract: A carpet cleaning apparatus is disclosed with a loop agitator. The loop agitator comprises a spindle with a plurality of flexible loops attached to the spindle. A blade is provided in close relative proximity to the agitator for severing hair and other fibers that become entangled on the agitator. A de-foaming device is included that automatically dispenses a de-foaming chemical. The de-foaming device comprises at least two electrodes that allow foam to complete a circuit to open a solenoid valve. Negative vacuum pressure is allowed to disburse the de-foaming chemical. The device also comprises a basket with a mesh bag for straining wastewater and removing debris. Wastewater drains into a wastewater tank where an electrode switch is provided for activating a wastewater pump.

Abstract: A vacuum cleaner beater brush for lifting dirt from carpeted surfaces without damaging the carpet's fibers. The vacuum cleaner beater brush includes an elongate roller with a pair of opposite ends, and an outer side surface. Each of the ends of the roller has a mounting stud outwardly extending from the respective end of the roller. The outer side surface of the roller is divided into a pair of generally equal sized regions. The roller has a plurality of resiliently deflectable elongate prongs outwardly extending from a first of the regions of the outer side surface of the roller. The roller has a plurality of resilient bristles outwardly extending from a second of the regions of the outer side surface of the roller.

Abstract: A vacuum cleaner comprising a housing having an elongated transverse brush cavity with an elongated cylindrical brush therein, a duct having an air flow nozzle adjacent the brush cavity for receiving dirt-entrained air from the brush cavity, a vacuum motor operably associated with the duct and nozzle to draw dirt-entrained air through the nozzle and duct, and the brush cavity having a wrap configuration geometry over the brush including an elongated reflective ledge angled laterally upwardly toward the nozzle.

Abstract: Surface treatment apparatus having impact elements for impacting a surface to be treated, a brush element for brushing the surface, a drive device for operating the impact element and the brush elements, and a carriage device enabling the surface treatment apparatus to be moved across the surface to be treated. The brush elements include a composite rotary brush assembly having circumferentially spaced rows of bristles mounted on a rotatable shaft in alternate circumferential sequence with the impact elements and further rotary assembly mounted on a contra-rotation relative to the composite rotary brush assembly and/or the impact elements, each rotatable so their bristles move upwardly intermediate the respective shafts. The impact elements include a plurality of longitudinal spaced hammers each pivotable about an axis substantially parallel to the axis of the rotatable shaft.

Abstract: A vacuum cleaner head, for attachment directly to a vacuum cleaner body having a central longitudinal axis, has exposed bristles with remote ends on a plane off-set by about 70.degree. to the central axis. The bristles extend along opposing sides of a lower surface of the head in strips at either side of a channel through which dust and debris gathered up by the bristles passes into the vacuum body. The off-set plane means that when the body is held directly or by a handle, a natural comfortable sweeping action, with the handle axis at about 20.degree. to the vertical, keeps both strips of bristle in contact with the swept surface.

Abstract: The invention is directed toward a vacuum sweeper roller brush having an integrally formed stiffener bar. The roller brush includes a plurality of brush tufts which fixedly reside in recesses. The brush tufts and stiffener bars are arranged helically on the exterior of a generally cylindrical roller member. The stiffener bars support the brush tufts to provide improved sweeping performance.

Abstract: Apparatus and method for removing fibrous material wound around a generally cylindrical shaft rotated about a central longitudinal axis thereof. A cutter blade is provided to have a forward edge portion extending along the central longitudinal axis of the shaft, which edge portion is normally spaced from the shaft to define a non-cutting position. The edge portion of the cutter blade is moved about a reciprocating locus defined by a forward movement from the non-cutting position to a predetermined distance from the shaft effective to define a cutting position contacting the fibrous material, a lateral movement in the cutting position along the central longitudinal axis of the shaft to cut the fibrous material for its removal from the shaft, and a rearward movement from the shaft to return the edge portion to the non-cutting position.

Abstract: A brushroll for a vacuum cleaner includes a cylindrical dowel having a number of holes drilled thereinto. The holes are formed into a first row and a second row, the two rows being closely spaced in relation to each other. First tufts are secured in each hole of the first row and second tufts are secured in each hole of the second row. The tufts can be made of the same type of bristle or of different types of bristles. The tufts of the first row are supported by the tufts of the second row during a cleaning rotation of the brushroll. Preferably, the tufts of the second row are located at between 1/4 and 3/4 of a free length of the first row of tufts. The bristles of the second row are shorter than the bristles of the first row. If desired, a third row of tufts may also be provided. The rows of tufts can extend helically around the dowel.

Abstract: A surface treating tool comprising an interconnected cleaning and stripping device for a self contained automated retrieval cleaning apparatus that provides a vacuum recovery and filtration system, with the tool consisting of a rotary brush mounted in an open bottom housing. The brush provides a core having operative connection to a rotating means and includes rows of radially extending resilient flaps carrying at their distal ends peening elements adapted to have contact through the open bottom of the housing with the surface to be cleaned while such surface is being vacuumed. The core can also provide radially extending wire bristles alternately disposed between the rows of resilient flaps.

Abstract: A vacuum cleaner generally has a working head which is positioned on the floor surface when the machine is in use. The working head of a vacuum cleaner essentially includes a rotating brush, a suction blower and a motor for operating both the brush and the blower. In addition, this working head also generally requires a spacing device, such as a wheel for guiding the brush head or suction brush head and controlling its proper spacing in relation to the floor.

Abstract: In a vacuum cleaner beater brush structure, a beater brush roller is provided with a helical brush strip and a beater strip. A sprocket comprises a support flange and a gear pulley, the gear pulley comprising a carrier having brush tufts and beater bars, a step, a toothed array for engaging with the timing belt, the circular rib for preventing inflow of air containing dirt toward rotating portions of the structure, and an axle for supporting rotation of the structure and integrally formed therewith. A support pulley comprises a circular rib for preventing inflow of air containing dirt toward the rotating portion and an axle adapted for supporting rotation of the structure and integrally formed therewith. A pair of bearing mounts are coupled with the pulleys. The bearing mount comprises a rectangular supporter, a bearing housing portion for receiving an oil-filled sleeve bearing adapted to rotatably support the axle, and openings for allowing air containing dirt to flow therethrough.

Abstract: A beater brush roller of a vacuum cleaner beater brush assembly comprising a body assembly including a semi-cylindrical brush body having a helical brush strip integrally provided therewith, a semi-cylindrical beater body including a helical beater strip integrally provided therewith, a pair of axles engaging with bearing mounts of the beater brush assembly for supporting rotation of the beater brush roller. The annular supports are integrally provided to the body assembly for supporting the axles at opposite ends of the body assembly. The brush body, the beater body and the axles engage with a pair of set screws at the same time, thereby accomplishing the beater brush roller. The present invention provides a beater brush roller of a vacuum cleaner beater brush assembly having advantages in that it accomplishes the simple structure and facilitating the assembling thereof, and the fixing of the axles thereof is more facilitated and the crack of the roller body due to the fitting force is prevented.

Abstract: A vacuum cleaner has a power brush which projects dirt particles directly into a specially formed and located vacuum nozzle in such a manner that low air consumption can be used. The vacuum nozzle has an inlet extending along the full axial length of the power brush. Inclined grooming brushes may be provided to eliminate wheel tracks. The front wall forwardly of the power brush may be modified to provide front edge cleaning. A cordless upright vacuum cleaner may advantageously be provided having a cleaning performance comparable with that of mains powered upright cleaners.

Abstract: A floor nozzle for use with a vacuum cleaner has an agitator rotatably disposed in a housing and includes a rotor and at least one elongate web mounted on a circumferential surface of the rotor. The elongate web is made of a flexible material and has a plurality of teeth on at least one of opposite surfaces thereof. The elongate web has a T-shaped helical anchor foot inserted in a complementary T-shaped helical groove defined in the circumferential surface of the rotor. The floor nozzle also has a turbine rotatable under a vacuum developed by the vacuum cleaner and operatively coupled to the agitator for rotating the agitator.

Abstract: A vacuum cleaner has a power brush which projects dirt particles directly into a specially formed and located vacuum nozzle in such a manner that low air consumption can be used. The vacuum nozzle has an inlet extending along the full axial length of the power brush. Inclined grooming brushes may be provided to eliminate wheel tracks. The front wall forwardly of the power brush may be modified to provide front edge cleaning. A cordless upright vacuum cleaner may advantageously be provided having a cleaning performance comparable with that of mains powered upright cleaners.

Abstract: A brush roll assembly for an upright vacuum cleaner having mounting blocks at each end to support the brush at different levels, to account for wear, depending on the selected angular orientation of such blocks. The blocks, while of different size to prevent improper installation end-for-end, are relatively large for convenience and performance and are configured to avoid obstruction of edgewise air flow and to avoid improper installation in an angular sense.

Abstract: Disclosed is an upright-type electric vacuum cleaner which comprises a suction port body provided with a rotary brush and a main body case supported tiltably on the suction port body. Improvements are made in details such as the arrangement for supporting the main body case in the suction port body, the arrangements of mounting a handle onto the main body case, the configuration of a main body duct, the arrangement of a rotary brush, the arrangement of a cover of the main body case, and the arrangement of a T-shaped joint for connecting the main body duct and a dust filter means, thereby increasing the strength and rigidity of each of these parts and improving the performance of the vacuum cleaner.

Abstract: An air booster power nozzle for use in combination with a vacuum cleaner having a motor/fan unit for creating a vacuum, the power nozzle including an enclosed base having a suction inlet for air and an air outlet spaced from the suction inlet, a power source and a motor energized by the power source, a suction-creating fan rotatably supported by the motor and sited relative to the enclosed base adjacent the air outlet; the motor/fan units of the vacuum cleaner and of the power nozzle operating in tandem for creating an extremely high suction and vacuum at the power nozzle to forcefully remove debris from the surface being cleaned and to preclude plugging of the power nozzle or the vacuum cleaner.

Abstract: A cylindrical power brush for a vacuum cleaner includes two types of bristle tufts. One type of bristle tuft is short and stiff for contacting and agitating a carpeted surface. The other type of bristle tuft is longer and softer for contacting a hard surface. In addition to the differences in length and bristle stiffness, the tufts for the hard surface contain substantially fewer bristles, whereby catching and rolling of carpet edges is avoided. One embodiment alternates types of bristle tufts in a row of bristle tufts. Another embodiment employs multiple rows of bristle tufts arranged such that a point on a surface being cleaned is contacted alternately by the two types of bristle tuft. Winding up of thread and hair on the axle of the rotating brush is avoided by overlapping annular extensions on a support wheel and a brush spindle. The brush support wheel is locked in place in the floor tool by a resilient locking tab integrally formed with one of the halves of the floor tool.

Abstract: Disclosed is an upright-type electric vacuum cleaner which comprises a suction port body provided with a rotary brush and a main body case supported tiltably on the suction port body. Improvements are made in details such as the arrangement for supporting the main body case in the suction port body, the arrangements of mounting a handle onto the main body case, the configuration of a main body duct, the arrangement of a rotary brush, the arrangement of a cover of the main body case, and the arrangement of a T-shaped joint for connecting the main body duct and a dust filter means, thereby increasing the strength and rigidity of each of these parts and improving the performance of the vacuum cleaner.

Abstract: A cylindrical motor driven brush for a vacuum cleaner or the like having a hollow outer cylinder and a plastic bristle tube assembly for insertion in the outer cylindrical tube. The insert tube is provided with a helical mounting strip with brush bristles thereon which is inserted through a correspondingly shaped slot in said outer cylindrical tube.

Abstract: A new curb and gutter machine used in combination with a vehicle and characterized by its construction to include an adjustable cutter for trimming along the side of a roadway or curb, a sweeper for removing not only trimmed material but also other debris which might be along the side of the roadway, and a vacuum head for transferring the debris into a receptacle that is preferably mounted at the rear of the vehicle. The machine of this invention is further characterized by its utilization of braided cable to accomplish both the cutting operation and the sweeping operation, thereby significantly increasing the useful life of both the cutter and the sweeper.

Abstract: A motor driven cylindrical brush for a cleaning apparatus. The brush has bristles which lie in the zone outside a bearing section provided with a contact surface for a drive belt. Between the bristle filling and the bearing section, the brush member has recessed annular grooves. Via these grooves, it is possible to compensate for length changes of the brush member. These length changes occur when the brush filling is anchored in the brush member. By compensating for these length changes, the brush is very smooth running, and minimum bearing loading occurs.

Abstract: A surface cleaning machine is provided which employs a drum broom at a forward portion of the machine for sweeping the floor, a hopper in front of the drum broom to receive debris therefrom, a plurality of disc-type scrubbing brushes at an intermediate portion of the machine for scrubbing the floor, and a squeegee assembly therebehind. A solution or supply tank and a recovery tank are located in side-by-side relationship at a forward portion of the machine, the solution tank supplying clean solution for the disc brushes and the recovery tank receiving dirty solution gathered by the squeegee assembly. The squeegee assembly is connected to the machine by arms which also raise and lower the assembly, the arms being engaged by a mounting plate carrying the disc brushes so that both the squeegee assembly and the disc brushes can be raised and lowered by common mechanism.

Abstract: A vacuum cleaner beater brush structure having a dowel roller provided with a sprocket for cooperation with a cog belt. The brush structure is elongated for providing a wide cleaning action. A portion of the brush is disposed outboard of the cog belt sprocket. The beater brush includes a novel arrangement of brush and beater bar strips carried in mounting channels in the dowel portion thereof. The end brush assembly is mounted to the dowel by mounting structure which further clamps the cog belt sprocket to one end of the dowel.

Abstract: A brush or agitator roll of a suction cleaner for carpets or other floor coverings is provided with a plurality, for example, a pair of diametrically opposed longitudinally extending spiral grooves and a bristle/agitator strip is spirally, slidably engaged in each spiral groove. Each strip has a section including a band forming part of a crowned pulley for a drive belt. On either side thereof a series of holes is provided for receiving bristle tufts. On each side, the strip is provided with a radial hole at a medial location with each succeeding bristle hole being elongated so that its inner wall is radial and the outer wall is inclined away from the center by an amount equal to the inclination of the adjacent hole plus a fixed incremental amount.

Abstract: Wall-floor edge cleaning ability in a vacuum cleaner is improved by a disk brush positioned rim with its bristles capable of floor contact and the hard, unyielding parts entirely contained in a gap in a bumper guard affixed to an exterior side wall of the housing. A stub shaft, loosely penetrating an aperture in the said housing side wall, is rigidly affixed at one extremity to the hub of the disk brush and at the other extremity axially to a free, unfettered end of a revolvable brush roll, the said brush roll horizontally supported within the nozzle area between the housing side walls. The disk brush is consequently revolvable with the brush roll. The disk brush may join the stub shaft end on a slightly oblique plane to assure better agitation of a carpet nap and direct penetration of a wall-floor edge by the rim bristles. To facilitate assembly and replacement of worn parts, the members are removably joined.

Abstract: A rug and carpet cleaning apparatus of the type in which a housing is shifted along the floor and is connected to a suction chamber while having rotary brush, carpet-shampoo, massager, and like rotary units which are selectively to act upon the carpet depending upon the function or operation to be carried out. According to the invention, at least two such units are provided on opposite sides of the fulcrum or pivot of a rocker or teeter which is controlled, e.g. by a lever and cable arrangement, to selectively bring one or the other unit into action depending upon the tilt imparted to the rocker. Both units can be continuously coupled to the drive motor which can also be mounted on the rocker.