Abstract: An example robot includes: a motor disposed at a joint configured to control motion of a member of the robot; a transmission including an input member coupled to and configured to rotate with the motor, an intermediate member, and an output member, where the intermediate member is fixed such that as the input member rotates, the output member rotates therewith at a different speed; a pad frictionally coupled to a side surface of the output member of the transmission and coupled to the member of the robot; and a spring configured to apply an axial preload on the pad, wherein the axial preload defines a torque limit that, when exceeded by a torque load on the member of the robot, the output member of the transmission slips relative to the pad.

Abstract: The present invention relates to a floor surfacing machine (1) comprising a frame (2) that is carried by a first wheel (3) and a second wheel (4). The floor surfacing machine (1) further comprises a first motor (6), a handle arrangement (7), at least one planetary head (15) that is rotatably mounted to the frame (2) and at least one satellite surfacing head (19, 20, 21) that is rotatably mounted to the planetary head (15), where the first motor (6) is arranged to propel the planetary head (15). The floor surfacing machine (1) comprises a first control unit (10), and a remote control panel (11) which in turn comprises a second control unit (12) that is arranged to communicate with the first control unit (10). The floor surfacing machine (1) also comprises a second motor (22) that is arranged to propel the satellite surfacing heads (19, 20, 21) such that the planetary head (15) and the satellite surfacing heads (19, 20, 21) are independently operable.

Abstract: The present invention relates to a floor treatment apparatus (1) and method for treating a floor.

Abstract: A dust collection system for a circular saw may include an attachment. A fixed blade guard may define an exhaust port for removing debris drawn into the fixed blade guard. An attachment may be positioned adjacent to a fixed blade guard in fluid communication with an interior of the fixed blade guard through an aperture, where the attachment defines an exhaust port. An exhaust port can extend into fluid communication with a cavity formed by a protrusion, where the cavity has an expanded interior volume extending from and adjacent to the exhaust port. A channel defined by a connection configured for connecting to a vacuum source is in fluid communication with the expanded interior volume of the cavity through the exhaust port for pulling debris from within the fixed blade guard into the cavity and through the exhaust port and the channel toward the vacuum source.

Abstract: The invention relates to a device for processing a hard surfacing, the device comprising a rotatable hammering unit configured to process the hard surfacing under the hammering unit with hammers, the hammering unit comprising a substantially flat first and second disc with a number of hammer wheels on the underside of the second disc, wherein the coupling between the first and second disc is formed by one or more vibration-damping coupling elements. The invention also relates to a method for processing a hard surfacing with a vehicle provided with the device described herein.

Abstract: An adjustable sander pad assembly comprising a backer flange, multiple support fingers, multiple adjustment supports, a sander plate, and an adjustment ring; wherein the multiple support fingers each has a first and a second attachment point, wherein the first attachment point is attached to the adjustment support, wherein the second attachment point is attached to the adjustment ring, wherein the support fingers, the adjustment supports, the sander plate, and the adjustment ring are mounted on the backer flange, and wherein the adjustment ring is rotated to move the support fingers and adjustment supports radially from a retracted position to an extended position.

Abstract: The present disclosure describes a chemical mechanical planarization system that includes a pad on a rotating platen, a wafer carrier configured to hold the wafer surface against the pad and apply pressure to the wafer, a slurry dispenser configured to dispense slurry on the pad, and a conditioning wheel configured to condition the pad. The conditioning wheel further includes a base and one or more flexible structures attached to the base with each flexible structure having an elastic body configured to exert a downforce on a feature of the pad, where the downforce is proportional to the height of the feature.

Abstract: An apparatus for grinding a concrete floor surface, in order to perform grinding with a manual, a pullable or a ride-on concrete trowel machine is provided. The apparatus comprises a concrete trowel organ to be used with the concrete trowel machine and a diamond grinding arrangement, such as one or several diamond disks or like, to be coupled in connection with the concrete trowel organ removably by means of a fastening arrangement. The fastening arrangement for coupling the diamond grinding arrangement in connection with the concrete trowel organ comprises a fastening frame, being in connection with the diamond grinding arrangement that exits on a scrubbing surface of the concrete trowel organ, and a fastening part extending from the fastening frame and, while going through the concrete trowel organ, getting supported against a back surface of the same.

Abstract: A grinder (100) includes a motor (12), a housing (4, 6, 30), a spindle (24), a first cover (120), and a second cover (170). The spindle protrudes downward from the housing, is driven by the motor, and thereby rotates. The first cover is provided in the circumferential direction of the spindle, is fixed to the housing, and at least partially covers a tool accessory (40), which is mounted on the spindle, from above. The second cover is detachably mounted on the housing (6) independently of the first cover.

Abstract: An example robot includes: a motor disposed at a joint configured to control motion of a member of the robot; a transmission including an input member coupled to and configured to rotate with the motor, an intermediate member, and an output member, where the intermediate member is fixed such that as the input member rotates, the output member rotates therewith at a different speed; a pad frictionally coupled to a side surface of the output member of the transmission and coupled to the member of the robot; and a spring configured to apply an axial preload on the pad, wherein the axial preload defines a torque limit that, when exceeded by a torque load on the member of the robot, the output member of the transmission slips relative to the pad.

Abstract: A sanding wheel that may be used, e.g., to finish a wood deck, includes one or more risers. Each riser includes an angled face and a cross member, and the angled face and cross member define a slot therebetween. The retaining or fastening clip includes a retaining spring, and the fastening clip is received on the angled face of the riser with the retaining spring extending into the slot. The blade has an abrasive on a first end and an aperture at a second end, the aperture being defined by a shoulder about the aperture. The second end of the blade extends into the slot with the retaining spring of the fastening clip engaging the shoulder. The slot and the retaining spring are configured to mechanically lock the blade to the riser and the base.

Abstract: The present invention relates to a floor surfacing machine comprising a frame that is carried by a first wheel and a second wheel. The floor surfacing machine further comprises a first motor, a handle arrangement, at least one planetary head that is rotatably mounted to the frame and at least one satellite surfacing head that is rotatably mounted to the planetary head, where the first motor is arranged to propel the planetary head. The floor surfacing machine comprises a first control unit, and a remote control panel which in turn comprises a second control unit) that is arranged to communicate with the first control unit. The floor surfacing machine also comprises a second motor that is arranged to propel the satellite surfacing heads such that the planetary head and the satellite surfacing heads are independently operable.

Abstract: Provided is a CMP conditioner comprising: a substrate, multiple abrasive bars, and multiple slide blocks. The substrate is divided into a central surface and an outer surface. The central surface is a recessed part. The outer surface encompasses the central surface. Multiple mounting holes are recessed from the outer surface. The abrasive bars are each respectively mounted in the mounting holes. Each of the multiple abrasive bars comprises a bar body and an abrasive particle. The abrasive particle is mounted on a top surface of the abrasive bar. The multiple slide blocks are distributed among the mounting holes of the outer surface. Each of the multiple slide blocks comprises a slide dressing surface. The present invention utilizes the slide blocks to reduce the contact between the substrate and a polishing mat efficiently. The slide blocks may decrease dissolving out of metal components within the substrate and the pollution induced.

Abstract: A hand-held scrubbing tool is formed with an upper dome portion and an incorporated cylindrical base portion which has a predetermined diameter and a generally circular bottom surface. The tool is favorably formed of a comfortable, flexible urethane rubber material that has a durometer value of about 30 A. Hook type material is embedded into the bottom surface of the base portion and is adapted to permit a scrub pad, sanding pad, or the like to be secured to it. The tool may have a design with protruding, tactile features that facilitate a comfortable grip on the tool.

Abstract: A pad changer capable of automatically replacing a pad used to wipe out dust on a floor, a cleaner and a cleaner system having the pad changer are provided. The pad changer to replace a pad mounted to a cleaner includes a replacement unit. The replacement unit includes a separation cartridge to separate the pad from the cleaner and receive the separated pad therein, and a mounting cartridge to receive a pad therein and mount the pad to the cleaner.

Abstract: An engineered wood flooring removal apparatus for use with a buffer machine to remove bottom ply and adhesive layers of the wood flooring is provided. The apparatus effectively dislodges the bottom ply and adhesive layers with enhanced efficiency while minimizing the production of hazardous airborne particulates. The apparatus includes a base member rotatably mounted to the buffer machine, a support pad coupled to the base member, a disc member coupled to the support pad, and a plurality of cutting members coupled to the disc member. Each cutting member has an upper exposed head and a lower member that extends through the disc member, the support pad and the base member. The upper exposed heads of the cutting members contact the bottom ply and adhesive layers of the engineered wood flooring and dislodge the layers during a rotation of the base member when the buffer machine is enabled.

Abstract: A dust collection cover may be made from resin for achieving a reduction in its typical weight. In such a configuration, a disk-shaped grinding stone for grinding a steel material is preferably not attachable due to interference of an attachment-restricting portion. It is preferred that only a cup-shaped diamond wheel for work that generally does not produce heated iron powder or the like is attachable.

Abstract: Disclosed are an orbital smoothing device for smoothing a surface of a substrate and a method of smoothing a surface of a substrate using the orbital smoothing device. The orbital smoothing device includes a rotatable plate that is driveable by a motor in at least one of a clockwise or a counterclockwise direction and a plurality of smoothing pad assemblies coupled to said plate. Each of the plurality of smoothing pad assemblies is capable of independent rotation in both clockwise and counterclockwise directions and includes a shaft for coupling each of said smoothing pad assemblies to the rotatable plate, means for providing independent rotation in both clockwise and counterclockwise directions mounted on the shaft and securable in a pad holder and a pad holder for receiving and securing the means for independent rotation. The pad holder has removably mounted thereon a smoothing pad capable of smoothing the surface of the substrate when the rotatable plate is driven by the motor.

Abstract: A load transporting device comprising: a central axle portion having at least one wheel, a first construction equipment engagement portion operably connected to the central axle portion, the first construction engagement portion accommodating a curvilinear portion of a construction equipment having a curvature, wherein the first construction engagement portion matches the curvature of the curvilinear portion of the construction equipment, and a second construction equipment engagement portion operably connected to the central axle portion, the second construction engagement portion accommodating an operation component of the construction equipment is provided. Furthermore, an associated method is also provided.

Abstract: A hybrid concrete saw includes a saw blade, an internal combustion engine having an output shaft operably connected to the saw blade, and an electric motor connectable to a battery for receiving power therefrom and having an output shaft operably connected to the saw blade. A transmission is connected to the output shaft of each of the engine and the electric motor and the saw blade. A clutch selectively decouples one of the engine and the electric motor from the transmission. A controller controls operation of the engine and the electric motor. The concrete saw is operable in a first mode where the saw blade is driven solely by the engine, a second mode where the saw blade is driven solely by the electric motor, and a third mode where the saw blade is driven by both the engine and the electric motor.

Abstract: A counter-rotating polisher includes: an enclosure, an electric motor, a polishing arrangement and a counter-rotating arrangement. The electric motor is fixed to the enclosure and includes a driving axle. The polishing arrangement includes two polishing device. The polishing devices respectively include a fixed tray and a polishing material that are fixedly connected to an outside of the fixed tray. The fixed tray is perpendicular to the driving axle. The counter-rotating arrangement includes a first driving wheel, a second driving wheel and a change-direction wheel. The first driving wheel is connected to the driving axle and driven by the driving axle. The second driving wheel is fixedly connected to the second fixed tray. The change-direction wheel is connected to the first driving wheel and the second driving wheel. The driving axle rotates the first polishing material positively. The change-direction wheel reversely transmits the rotation to the second driving wheel.

Abstract: A hand-held edge sander that is adapted to sand vertical surfaces near a corner. The edge sander is a portable power hand tool that has an electric motor mounted within a casing. The electric motor is used to move a sanding head. The sanding head has a flat surface designed to retain a flat piece of sandpaper thereon. The flat surface of the sanding head exists in a first plane. The first plane remains constant as the edge sander is in operation and the sanding head is moved by the electric motor. Wheels are mounted to the casing for supporting the casing during the operation of the edge sander. The wheels are oriented to rotate in a plane that is parallel to the flat surface of the sanding head.

Abstract: A floor care apparatus is provided that utilizes at least one cylindrical pad to remove a floor finish. More specifically, a cylindrical pad having an abrasive surface is integrated onto a cylindrical scrubber brush or associated core or roller commonly used in the art. The main outwardly-facing surface of the pad contacts the floor to remove a predetermined amount of floor finish wherein generated debris is expelled away from the pad. After finish removal, a new layer of finish is applied to the floor. Thus, the need to remove all finish layers from a flooring surface is alleviated, which saves time and money.

Abstract: A drive assembly for a grinder has a housing device, a drive device, multiple transmission devices and multiple grinding devices. The drive device has a motor, a driving wheel and a driving band connected with the motor and the driving wheel. Each transmission device has a transmission wheel, multiple driven wheels and a transmission band. Each transmission band is engaged with the driven wheels and the transmission wheel is engaged with the driving band. With two-layer arrangement of the bands, the driving band and the transmission bands are not long and can be rotated smoothly to reduce energy waste. Accordingly, the motor's load is greatly reduced, and life spans of the driving band and the transmission bands are prolonged.

Abstract: A hand-held rotary tool is provided which can offer improved usability while realizing reduction of vibration of a tool body. The rotary tool has a tool body, a drive shaft disposed in the tool body, a driven shaft to which a tool bit is attached, an Oldham's coupling that transmits rotation of the drive shaft to the driven shaft, and an elastic element disposed between the driven shaft and the tool body. The driven shaft is prevented from moving in a longitudinal direction of the driven shaft relative to the tool body and allowed to move in a direction transverse to the longitudinal direction of the driven shaft relative to the tool body. During this relative movement, power transmission from the drive shaft to the driven shaft is maintained via the Oldham's coupling. The elastic element absorbs the movement of the driven shaft relative to the tool body.

Abstract: Orbital surface cleaning apparatus (400) are presented. An orbital surface cleaning apparatus (400) can include a driver motor (410) coupled to a plate (130) having offset distributed weights (133). As the plate (130) rotates, the offset weights (133) cause oscillations of the apparatus (400) cleaning head. A driver motor (410) capable of 80 RPM can induce over 1700 RPM oscillations.

Abstract: A floor grinding/polishing machine with a gimbal-mounted grinding/polishing head is disclosed. The floor grinding/polishing machine includes a wheeled carriage, a handle attached to the carriage for controlling the wheeled carriage, a grinding/polishing head attached to the wheeled carriage, and a motor supported on the grinding/polishing head for driving one or more abrasive discs on the bottom of the grinding/polishing head. The grinding/polishing head mounts to the wheeled carriage with a gimbal mount, allowing fore-and-aft pivoting of the head, as well as side-to-side pivoting of the head relative to the wheeled carriage.

Abstract: A concrete finishing tool includes a body having a chassis, a guard, and frame supports. An extension handle is attached to the body, and a motor is attached to the body and operatively connected to a driving gear and driven gear to rotate blades having a quick change coupling mechanism. An integrated handle is configured on the body and houses a switch for the motor that is powered by a power supply.

Abstract: A damage prevention tool and method is provided in which a free-floating disk is connected to an abrasion disk through a bearing structure. When the tool is actuated, the abrasion disk rotates substantially independent of the floating disk. The floating disk may have a slightly larger circumference and a non-marring friction material on its outer edge, such that the outer edge does not damage foreign objects and protects the abrasion disk, and the abrasion material mounted to the abrasion disk, from contacting foreign objects.

Abstract: A rotatable disc head for a floor treatment device includes a pair of coupling members which are pivotably connected to each other according to pivot axes which are transversely oriented with respect to each other. A rotation axis is defined which is transversely oriented with respect to the pivot axes. The coupling members are furthermore connected to each other by means of at least one elastically deformable connection element. One of the coupling members includes fitting means for mounting the coupling member to the rotary drive of the floor treatment device and the other coupling member includes carrier means onto which a floor treatment element, such as a grinding disc, can be mounted. The connection of the connection elements to one of the coupling members is an adjustable connection allowing displacements which are oriented transversely with respect to the rotation axis.

Abstract: A machine tool providing a large grinding area includes a tool body, a rotary bracket driven by the tool body and a plurality of grinding portions coupled to the rotary bracket. The tool body includes a driving motor and a spindle driven by the driving motor to spin axially. The rotary bracket is coupled to and driven by the spindle to rotate and includes a plurality of connecting portions equally spaced from each other on the circumference formed by rotation of the rotary bracket. The grinding portions are coupled with the connecting portions and have grinding zones at the same horizontal level and are driven by the rotary bracket to rotate synchronously therewith to jointly form a grinding plane. Thereby a larger grinding area can be achieved through smaller grinding discs.

Abstract: A floor grinding and polishing machine including a base that includes a shroud, and first and second spindle carriers rotatably coupled thereto which have first and second axes of rotation spaced from each other in an alignment direction. The base also includes first and second pluralities of rotatable spindles, each plurality carried by a spindle carrier and distributed about the respective spindle carrier axis of rotation. Motors are connected to the shroud and drivingly engaged with the pluralities of spindles, whereby each plurality of spindles is rotatably driven about its respective spindle axis of rotation. The machine also includes floor-engaging handle coupled to the base and defining a direction of operative movement along which the machine may linearly travel. The base and handle have different first and second selective, relative positions in which the alignment and operative movement direction have substantially different relative angular positions.

Abstract: A counter-rotating polisher includes: an enclosure, an electric motor, a polishing arrangement and a counter-rotating arrangement. The electric motor is fixed to the enclosure and includes a driving axle. The polishing arrangement includes two polishing device. The polishing devices respectively include a fixed tray and a polishing material that are fixedly connected to an outside of the fixed tray. The fixed tray is perpendicular to the driving axle. The counter-rotating arrangement includes a first driving wheel, a second driving wheel and a change-direction wheel. The first driving wheel is connected to the driving axle and driven by the driving axle. The second driving wheel is fixedly connected to the second fixed tray. The change-direction wheel is connected to the first driving wheel and the second driving wheel. The driving axle rotates the first polishing material positively. The change-direction wheel reversely transmits the rotation to the second driving wheel.

Abstract: The present invention is directed to an insertion tool (12) for a machine tool that has a hub (16) with at least one opening (42, 80) for insertion of a fastening means (40, 84), via which the hub (16) is clampable on a driving flange (22) of the machine tool connected to a drive shaft, the opening (42, 80) including a retaining region (54) and a releasing region (56), the releasing region (56) including a stop (66, 88) for limiting a release motion of the fastening means (40, 84). It is provided that the opening (42, 80) adjacent to the stop (66, 88) has a convex section (76, 90).

Abstract: A ceiling grinder comprising a drive unit, a grinding wheel, which can be set in rotation by means of the drive unit, a grinding head housing, which receives the grinding wheel and has an opening allowing the grinding wheel access to the surface to be ground and a holding element for holding the grinder. The ceiling grinder also has means for producing a negative pressure within the grinding head housing, by which the ceiling grinder is held on the surface to be ground, wherein the means for producing the negative pressure comprise lamellar elements, which rotate about the axis of the grinding wheel during the grinding operation of the ceiling grinder and thereby cause within the grinding head housing an air flow that induces a static negative pressure.

Abstract: The invention relates to a grinding head for a grinding machine. The grinding head comprises a tool holder, which in use is moved in a plane, in particular rotated or translated back and forth, by the grinding machine. The grinding head furthermore comprises at least two tools which are connectable to the tool holder by a releasable sticking connection. One of the tools or the tool holder is provided with at least one protrusion and the other one is provided with an associated cavity to lock which extend transverse to said plane of movement of the tool with respect to the tool holder in a direction parallel to said plane when the tool is connected to the tool holder.

Abstract: A speed control device is provided for a pneumatic power tool which includes a housing with a pressure air inlet, an output spindle, and an air turbine with a turbine wheel drivingly connected to the output spindle. Nozzles are arranged for directing motive air onto the turbine wheel. The speed control device includes a valve unit for controlling pressure air flow through the nozzles in response to a speed responsive parameter. The plurality of nozzles are divided into n separate nozzle groups having individual air feed through individual air feed passages (n is an integer, n>1). The valve unit is capable of being actuated into n states for controlling air feed to the n nozzle groups, whereby for each subsequent state, x (1?x?n, x is an integer) air feed passages are connected to the pressure air inlet such that nozzle groups 1 to x are fed with air.

Abstract: A system and method for high efficiency floor treating is provided. Embodiments of the floor treating system include a floor treating device with a power source having a rotatable drive shaft with an axis of rotation, a flywheel with an aperture for receiving the drive shaft, a counterbalance connected to the flywheel, and a floor treating attachment located at a distance of at least 0.400 inch from the axis of rotation of the drive shaft. Embodiments of the floor treating method include agitating a cleaning substance using the floor treating device with the floor treating attachment positioned at least 0.400 inch from the axis of rotation of the drive shaft.

Abstract: A floor treatment apparatus includes a frame, a housing which is rotatable with respect to the frame according to a main axis, at least three head pulleys which are rotatable with respect to the housing according to respective head axes which are regularly spaced around, and which are parallel to, the main axis, a motor supported by the frame and a main belt drivable by the motor and being slung around the drive pulley and the driven head pulleys. Furthermore, the main belt is slung around a first auxiliary pulley and a second auxiliary pulley. The second auxiliary pulley is driven by the first auxiliary pulley. An auxiliary belt is slung around a fixed pulley connected to the frame and around the second auxiliary pulley for rotating the housing with respect to the frame.

Abstract: The invention relates to a grinding holder (10) for connecting a rotary driven tool (20) to a device (30) for machining floor and road surfaces, comprising a first plate member (40) for detachable attachment of the tool (20), and a second plate member (50) for detachable attachment to the machining device (30).

Abstract: This invention relates to a mobile floor levelling vehicle for levelling an undulating floor surface, which comprises a vehicle body with front and back displacement means for moving the vehicle body. To carry out the levelling operation the floor levelling vehicle comprises at least one grinding tool which is provided and driven to remove an amount of material from the floor, and at least one additional polishing device provided at a position behind the back displacement members in moving direction of the levelling vehicle.

Abstract: A floor finishing machine includes a base frame, a movable frame movably mounted to the base frame, and a plurality of floor finishing units carried by the movable frame, and being pivotable about a generally longitudinal pivot axis and a generally transverse pivot axis. The machine may also include a jack operatively coupled between the base frame and the movable frame, and a vacuum tank carried on the movable frame and straddling the jack.

Abstract: A negative pressure dust collection structure aims to be used on a power tool which is coupled with an application tool operable in a working space surrounded by a dust collection hood. The dust collection hood includes at least one flow conduction vent communicating with an airflow duct through a negative pressure enhancing duct. The negative pressure enhancing duct has a negative pressure enhancing chamber communicating with the flow conduction vent. The negative pressure enhancing chamber is formed at a cross section shrunk gradually from the flow conduction vent towards the airflow duct to increase suction of the negative pressure enhancing duct to collect dust in the dust collection hood. Moreover, the negative pressure enhancing chamber has an opening edge mating the shape of the inner side of the wall of the dust collection hood to increase covering range of the airflow.

Abstract: Disclosed are an orbital smoothing device for smoothing a surface of a substrate and a method of smoothing a surface of a substrate using the orbital smoothing device. The orbital smoothing device includes a rotatable plate that is drivable by a motor in at least one of a clockwise or a counterclockwise direction and a plurality of smoothing pad assemblies coupled to said plate. Each of the plurality of smoothing pad assemblies is capable of independent rotation in both clockwise and counterclockwise directions and includes a shaft for coupling each of said smoothing pad assemblies to the rotatable plate, means for providing independent rotation in both clockwise and counterclockwise directions mounted on the shaft and securable in a pad holder and a pad holder for receiving and securing the means for independent rotation. The pad holder has removably mounted thereon a smoothing pad capable of smoothing the surface of the substrate when the rotatable plate is driven by the motor.

Abstract: A floor treatment apparatus includes a frame, a housing which is rotatable with respect to the frame according to a main axis, at least three head pulleys which are rotatable with respect to the housing according to respective head axes which are regularly spaced around, and which are parallel to, the main axis, a motor supported by the frame, a drive pulley which is drivable by the motor, a main belt tensioning pulley and a main belt which is slung around the drive pulley, the head pulleys and the main belt tensioning pulley. Further an auxiliary pulley is coaxially connected to the main belt tensioning pulley. A fixed pulley is connected to the frame. An auxiliary belt is slung around the auxiliary pulley and the fixed pulley for rotating the housing with respect to the frame.

Abstract: The invention relates to a grinding head for a grinding machine. The grinding head comprises a tool holder, which in use is moved in a plane, in particular rotated or translated back and forth, by the grinding machine. The grinding head furthermore comprises at least two tools which are connectable to the tool holder by a releasable sticking connection. One of the tools or the tool holder is provided with at least one protrusion and the other one is provided with an associated cavity to lock which extend transverse to said plane of movement of the tool with respect to the tool holder in a direction parallel to said plane when the tool is connected to the tool holder.

Abstract: A floor treating system is provided including a power source having a rotatable drive shaft with an axis of rotation, a floor treating attachment, means for imparting an oscillating motion from the drive shaft to the floor treating attachment, a rug beating attachment, and means for imparting a vibrating motion from the drive shaft to the rug beating attachment. Multiple embodiments provide that the means for imparting an oscillating motion impart at least two speeds of oscillating motion. Embodiments include those with means for connecting floor treating attachments at at least two different distances from the drive shaft axis of rotation.

Abstract: A mobile machine for screeding floor surfaces and the like comprises a planet disk, which is rotatably supported and driven by a drive motor, and which carries at least one screeding disk, operatively connected to the drive motor and defining one screeding plane. The operative connection comprises at least one belt or chain running over a belt sheave connected to the screeding disk, and a belt sheave connected to the drive motor. The belt sheave of the screeding disk has a central stub axle forming part of an automotive wheel hub, comprising wheel bolts attached to said planet disk.

Abstract: A dual mode floor scrubber with a square cleaning pad that can rotate in a first mode to achieve a scrubbing operation away from the walls, and reciprocate longitudinally in a second mode adjacent to a wall to remove the sediment next to the wall and corners.

Abstract: A power-driven hand tool is disclosed comprising a housing, a work spindle for driving a tool, which tool can be located between a tool end of the work spindle and a fixing mechanism, further comprising a displacing mechanism with a clamping lever, adapted to pivot about a pivot axis for displacing the fixing mechanism between a releasing position, in which the fixing mechanism can be released from the work spindle, and a clamping position in which the fixing mechanism is clamped on the work spindle by a spring. An impeding mechanism is provided that interacts with the clamping lever for impeding the pivoting movement of the clamping lever between the releasing position and the clamping position.