Abstract: The invention concerns a carrier plate holding an abrading element, for detachable mounting on a rotatably mounted abrading plate driven during use, for abrading stone or concrete floors, which carrier plate has sides which form an acute angle with each other. The sides have flanges which are formed for surrounding engagement with a shoulder arranged on the abrading plate so that the carrier plate can be fixed on the abrading plate with an engagement based on form and friction.

Abstract: A floor finishing apparatus includes a chassis, a housing pivotably mounted to the chassis and having a mounting surface and at least partially defining a chamber, and a plurality of floor finishing units mounted to the mounting surface of the housing. The apparatus may include a rolling device carried by the housing and adapted to contact the ground to assist the housing in being pivoted with respect to the chassis.

Abstract: A floor care disk for a floor care machine such as a floor polishing machine includes a floor care pad mounted on a drive plate. The drive plate includes a stiff disk element and tongue-like tabs connected flexibly to a radially outer portion or rim of the disk element, and extending radially inwardly toward a radially inner portion or hub of the disk element. The radially inner free ends of the tongue-like tabs are free to flexibly deflect away from the plane of the disk element. The pad is mounted on the tabs and on the radially outer portion of the disk element. During rotational operation of the floor care disk, due to the arising centrifugal force acting on the center of mass of the rotating pad and tongue-like tabs, the pad and the tongue-like tabs are flexibly deflected away from the disk element and toward the floor surface, thereby deflecting the pad into osculating contact with the floor surface.

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 method of polishing a marble terrazzo floor, including shaving the surface with a first plurality of first diamond abrasive particles, and shaving the surface with a second plurality of second diamond abrasive particles. The first diamond abrasive particles are MBG-type mesh crystals characterized by a first average size, wherein the second diamond abrasive particles MBG-type mesh crystals characterized by a second, smaller average size, and wherein the diamond abrasive particles substantially laterally impact surface protrusions.

Abstract: A grinding head unit mountable in a planetary disk of a surface grinding machine generally including a housing mountable on the planetary disk, a holder supported on the housing and a surface grinding member detachably connectable to the holder wherein the holder is provided with a recess and the holder is provided with a portion receivable within such recess.

Abstract: An installation/uninstallation structure for tooling disk of a grinding tool includes a rotary shaft mounted in the grinding tool and a securing assembly including a securing seat, a shift plate and a securing member. The securing member is movably mounted in the securing seat. The shift plate is pivotally disposed on the securing seat for driving the securing member. In use, the securing assembly is fitted around a rear end of the rotary shaft, when the shift plate is shifted to a locking position, the securing member is latched with the rotary shaft to secure the securing assembly to the rotary shaft for fixing the tooling disk. When the shift plate is shifted to an unlocking position, the securing member is unlatched from the rotary shaft, permitting a user to detach the securing assembly from the rotary shaft for taking off the tooling disk without using any tool.

Abstract: A tool holder for a grinding machine, where the tool holder is mounted to a grinding platform of the grinding machine. The tool holder includes a plate member having a tapered slot where opposing stop elements are provided within the slot at a central location. The tool includes a pair of circular elements that are positioned on either side of the stop elements in the slot and are forced into the tapered shape of the slot so that the tool is held to the tool holder.

Abstract: A grinding tool for natural stone floors, artificial stone floors and industrial floors allows a greatest possible adaptation to the unevennesses of worn natural and artificial stone floors to be restored by using diamond tools that are flexibly attached. The diamond tools are fixed on a mat so that each individual diamond tool can adapt individually to the grooves and unevennesses of an animated natural stone and stone floor. The grinding pattern of a surface machined with said grinding tool corresponds to a newly produced natural stone or artificial stone floor.

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 floor edger and grinding device 10 has a deck 20 pivotably mounted to a rear frame 18 with a handle 16. The deck has a motor 22 mounted thereon that drives two grinder discs 24 in opposite rotational directions. The deck has a skirt 26 and a notch 28 extending along the front edge 27 of the skirt. The discs 24 protrude into the notch 28. A case 50 surrounds the drive gears 38 for protection against dust created by the discs 24.

Abstract: A method is disclosed for maintaining a hard surface, the method comprising treating the surface with a flexible pad (1), in the presence of abrasive particles, bonded to the pad, on a contact surface between the pad (1) and the hard surface. The abrasive particles comprise diamond particles, and the treating is performed in the absence of an effective amount of crystallization agent on the contact surface. A tool for use in the method is also provided, as well as a floor surfacing machine comprising such a tool and a method for manufacturing such a tool.

Abstract: A surface grinding machine generally consisting of a drive means provided with an output shaft; a planetary disk mounted on the shaft; and at least two grinding head units mounted on the planetary disk, each including a housing mounted on the planetary disk, a shaft having a flange portion, journaled in the unit housing, resilient means interposed between the housing and the flange portion of the unit shaft and a disk provided with a grit surface disposed on an outer side of the flange portion of the unit shaft.

Abstract: The invention relates to a grinding device, comprising a mounting body which is detachably connected to a grinding element, said detachable connection being designed such that the mounting body has a first adhering arrangement and the grinding element has a second adhering element and the adhering elements correspond in the manner of a Velcro fastener. The aim of the invention is to improve the quality and efficiency of the detachable connection for exchange of the grinding element of the claimed grinding device. Said aim is achieved, wherein the first adhering element (1) and the second adhering element (2) comprise a number of projections (3) each with a cross-sectional widening in the direction of the free end (7) of the projection (3).

Abstract: An eccentric grinder has a drive which is arranged in a housing and the drive shaft of which drives a supporting shaft of a back-up pad by way of an eccentric mounting. Also provided is a friction braking device, which comprises a friction braking element on the housing and a friction surface on the back-up pad. The friction surface slopes down in the radial direction from the inside to the outside with respect to a horizontal plane that is perpendicular to the axis of rotation of the back-up pad.

Abstract: An improved low pressure low speed concrete polishing apparatus and method of cleaning and polishing a floor is used with a conventional rotary flooring machine. A polishing pad has interchangeable polymer strips that are slideably received within the housing of the pad. The polymer strips have an abrasive material embedded therein which collectively work to polish the floor while cleaning the floor during normal low speed floor cleaning conditions.

Abstract: The invention relates to a device (1) at a mobile grinding machine (2) for stone materials and that comprises a rotatably driven disc-shaped housing (3), which is arranged to support a plurality of grinding disc holders (6) rotatably driven by a belt (5) or chain driven by a motor (4), which holders are distributed along the circumference of said housing (3) and supported by shafts (11) connected to said housing (3) at a mutual distance from each other. According to the invention, internally (7) in a casing (8), which surrounds a said housing (3), a gear rim (10), situated concentrically with a centre driving shaft (9), is arranged non-turnably connected to the casing (8). The grinding disc holder shafts (11) support an intermediate coupling cogwheel (18) each that co-operates non-turnably with the appurtenant shaft and with said gear rim.

Abstract: A rotary floor sanding machine has a vertically oriented bell housing with a backside floor support and a dust suction port for removing dust from within. The bell housing encloses the sides and backside of a disk casing and rotary sanding pad. The floor support is configured to place the floor contact area of the sanding pad forward of center. There is a lifting vane extending from proximate the floor contact area of the sanding pad in the direction of rotation towards the suction port in the bell housing to elevate dust particles to the higher velocity airflow near the suction port. There may be a shield for reducing the floor level opening between the back edge of the disk casing and the bell housing.

Abstract: A floor care machine such as a floor polisher includes a machine frame carrying a motor coupled through a drive arrangement to a rotationally driven head on which a floor care disc such as a polishing pad is mounted. The drive arrangement includes a drive element rotationally driven by the motor, and a driven element that is connected to the driven head and is automatically height adjustable. The drive element includes a bearing hub, an outer ring and four uniformly rotationally offset spokes that carry first rolling guides extending along helical paths about the rotation axis. The driven element includes upper and lower partial elements that receive the spokes therebetween and carry second rolling guides arranged facing the first rolling guides along the helical paths, and roller bodies are interposed therebetween. Relative rotation between the drive element and the driven element causes an axial height adjustment of the driven head.

Abstract: Disclosed is an exemplary abrasive surface preparation device for use with a rotary device having a rotatable housing and a support member extending obliquely from the housing. The exemplary abrasive hard surface preparation device includes a substantially planar substrate layer having a first end connectable to the support member and an opposite second end. An abrasive material is attached to at least the second end of the substrate layer.

Abstract: An abrasive disk assembly is provided for a floor resurfacing machine wherein the floor machine has at least one shaft configured to rotate about an axis substantially orthogonal to a work surface, the abrasive disk assembly including a head assembly of predetermined dimension configured to be coupled to one end of the shaft of the floor machine proximate the work surface, the head assembly including a central portion to be coupled to the shaft and a carrier portion for receiving at least one abrasive pad thereon, the carrier portion including at least one coupler in the form of a hook, a tab, a finger, a flange, and a tab extending from a peripheral edge of the carrier portion. At least one abrasive pad assembly is detachably coupled to one of the central portion and the carrier portion, and includes a first end received over the coupler and an opposite end to be attached to one of the central portion and the carrier portion.

Abstract: The invention relates to an arrangement in a mobile machine for screeding floor surfaces. This comprises a housing with a planet disk (3), which is rotatably supported in the bottom of the said housing and driven by a drive motor (1). The planet disk carries a number of rotatably supported screeding disks, distributed over the planet disk (3) and operatively connected to the drive motor (1). According to the invention the number of screeding disks is an even number up to a maximum of six. Viewed in the direction of rotation of the planet disk (3), half the number of screeding disks have a direction of rotation coinciding with the planet disk (3) and the remaining screeding disks an opposing direction of rotation.

Abstract: A cleaning element (36) for a cement floor surface mounted to a housing (32). Each cleaning element has a flat flexible abrasive surface (39) that is transversely positioned to the direction of motion to provide flex during cleaning of a cement floor surface.

Abstract: A linear lost motion mechanism is located within a tubular handle of a machine, such as a concrete finishing machine. The linear lost motion mechanism includes a pitch block configured to selectively frictionally lock with the tubular handle or a component attached to the tubular handle using a biasing spring. The linear lost motion mechanism can perform a number of functions, such as controlling a blade pitch adjustment system of a concrete finishing machine.

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: 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 present invention provides an apparatus and a method for aging a stone, preferably an artificial stone. The aging device comprises a rotary support operatively connected to a rotary shaft, at least one abrasive tool mounted to the rotary support for roughing and/or polishing a surface of the artificial stone when the rotary support is brought into functional contact with said surface, and biasing means that biasingly connect the abrasive tool to the rotary support. The biasing means urge the abrasive tool away from the rotary support while allowing the same to move toward the rotary support when the rotary support is brought into functional contact with the surface of the artificial stone, thereby allowing the abrasive tool to follow a surface profile of the artificial stone while roughing and/or polishing its surface.

Abstract: A wood floor edger is disclosed herein. An embodiment of the edger comprises a housing and a motor. The housing comprises an opening and a rotatable abrasive disc located in the opening. The rotatable abrasive disc may have a diameter greater than six inches. The motor is operatively connected to the first housing and drivingly connected to the abrasive disc. A motor controller is electrically connected to the motor, wherein the motor is operatable at a speed that is preselected by the motor controller.

Abstract: A switch mechanism includes a support structure and an electric switch having an activator moveable between a first position where the electric switch is ON and a second position where the electric switch is OFF. A cam is connected to a first actuator, moveably mounted on the support structure, so that movement of the first actuator results in movement of the cant A bar is connected to a second actuator, moveably mounted on the support structure, so that movement of the second actuator results in movement of the bar. The cam engages the activator so that movement of the cam by movement of the first actuator results in the activator moving between its two positions. The bar engages the activator so that movement of the bar by movement of the second actuator results in the activator moving between its two positions.

Abstract: A power sanding machine (10) has three circumferentially spaced cogged belts (40) to drive three discs (52) rotatably mounted to an inner bowl (30) which is rotatably mounted to a housing (12), which in turn is connected to an operating handle (14). Mechanical lock can rotationally affix the inner bowl (30) to the housing to circumferentially position a pulley at the left or right edge (326, 322) of the sanding machine or at the front end (330) of the sanding machine. Power cleaning and sanding machines (412, 500, 600) incorporate the three disc (52) arrangement or a direct-drive one disc arrangement (572, 672). The machines (412, 500, 600) include multiple floor finishing units (420, 514, 614) ganged together in unique arrangements.

Abstract: A grinding apparatus for grinding a surface includes a plurality of satellites, a carrier for supporting the plurality of satellites, a plurality of primary gears rotatably mounted within the carrier and disposed about a motor output, a static gear which is fixed with respect to the motor and co-axial with the motor output, and a plurality of secondary gears which each rotate with one of the primary gears. The primary gears rotate the satellites with respect to the carrier and the secondary gears rotate the carrier around the static gear.

Abstract: A method of polishing a marble terrazzo floor, including shaving the surface with a first plurality of first diamond abrasive particles, and shaving the surface with a second plurality of second diamond abrasive particles. The first diamond abrasive particles are MBG-type mesh crystals characterized by a first average size, wherein the second diamond abrasive particles MBG-type mesh crystals characterized by a second, smaller average size, and wherein the diamond abrasive particles substantially laterally impact surface protrusions.

Abstract: An epoxy porcelain tile surface including a plurality of spaced, substantially flat substantially smooth porcelain tiles and epoxy grouting substantially filling the spaces between the porcelain tiles. The plurality of spaced, substantially flat substantially smooth porcelain tiles are substantially flush with one another and substantially flush with the epoxy grouting.

Abstract: Disclosed is an exemplary abrasive surface preparation device for use with a rotary device having a rotatable housing and a support member extending obliquely from the housing. The exemplary abrasive hard surface preparation device includes a substantially planar substrate layer having a first end connectable to the support member and an opposite second end. An abrasive material is attached to at least the second end of the substrate layer.

Abstract: A grinding head unit mountable in a planetary disk of a surface grinding machine generally including a housing mountable on the planetary disk, a holder supported on the housing and a surface grinding member detachably connectable to the holder wherein the holder is provided with a recess and the holder is provided with a portion receivable within such recess.

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 surface grinding machine generally consisting of a drive means provided with an output shaft; a planetary disk mounted on the shaft; and at least two grinding head units mounted on the planetary disk, each including a housing mounted on the planetary disk, a shaft having a flange portion, journaled in the unit housing, resilient means interposed between the housing and the flange portion of the unit shaft and a disk provided with a grit surface disposed on an outer side of the flange, portion of the unit shaft.

Abstract: A floor edger and grinding device 10 has a deck 20 pivotably mounted to a rear frame 18 with a handle 16. The deck has a motor 22 mounted thereon that drives two grinder discs 24 in opposite rotational directions. The deck has a skirt 26 and a notch 28 extending along the front edge 27 of the skirt. The discs 24 protrude into the notch 28. A case 50 surrounds the drive gears 38 for protection against dust created by the discs 24.

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: The invention relates to a machine and at least one tool (10) for machining floor and road surfaces. The tool comprises at least one rotatably mounted disc (20) driven during use, which disc (20) comprises at least one machining element (30) being attached at one end (30a) to the disc. The machining element has a free end (30b) with a symmetrically blunt shape, so that the disc can be driven in different directions with the same machining element in a plane essentially in parallel with the plane of the disc.

Abstract: The invention relates to an arrangement in a mobile machine for screeding floor surfaces. This comprises a housing with a planet disk (3), which is rotatably supported in the bottom of the said housing and driven by a drive motor (1). The planet disk carries a number of rotatably supported screeding disks, distributed over the planet disk (3) and operatively connected to the drive motor (1). According to the invention the number of screeding disks is an even number up to a maximum of six. Viewed in the direction of rotation of the planet disk (3), half the number of screeding disks have a direction of rotation coinciding with the planet disk (3) and the remaining screeding disks an opposing direction of rotation.

Abstract: An angle grinder is provided including a trigger assembly for selectively actuating the angle grinder. A particle separation assembly is provided for the removal of any dust, particle, or artifacts that may have entered into the housing of the angle grinder. A brush biasing system is also provided to ensure proper and efficient operation of the motor of the angle grinder. An overload monitoring system is included to monitor the loading on the motor. A clutch mechanism is also included to prevent overloading on the motor of the angle grinder. A gear wheel lock mechanism is also provided to prevent the wheel spindle from rotating during installation or removal of a grinding wheel on the wheel spindle. An anti-locking flange system is also included to prevent the over-tightening of the flanges and the grinder wheel during the operation of the angle grinder. A gear case labyrinth feature is also provided.

Abstract: A quick change mounting system for grinding and other surface preparation pads provides a simple and effective way for the pads to be mounted and changed on the mounting plate of a large surface preparation machine without removing the mounting plate from the machine. (This method also allows that existing mounting plates and preparation pads may be used with a minimal amount of adaptation.) The new quick-change system makes use of a unique slot design (using countersunk keyhole slots) for mounting the pads on the plate. Studs fixed on the pads fit into slots on the plate and may lock into position. In operation, centrifugal and other forces then help to further seat the pad onto the plate.

Abstract: A head assembly for a rotary tool, comprising a body arranged for connection to a drive means, the drive means rotatable about a first axis of rotation; a rotatable element arranged for connection to a pad assembly, the rotatable element rotatable about a second axis of rotation disposed substantially parallel to the first axis of rotation; and, a locking assembly arranged to lock the rotatable element to the body to prevent rotation of the rotatable element relative to the body about the second axis of rotation.

Abstract: An abrasive abrading a grinding device (10) having a housing (12) for moving over a concrete surface. The housing has depending abrasion elements (14) with a substrate layer (30) and a backing layer (32) mounted to a support bracket (34) that in turn is affixed to the housing. The substrate layer (30) has a front surface (44) with a distal section (40) having abrasive particles (42) brazed thereon with brazing material (46).

Abstract: A wheel assembly for a floor treatment machine is provided that aids the operator in maintaining positive control of the machine. The wheel assembly includes a body that can be removably attached to the floor treatment machine, and wheels that are configured to contact the floor, while the floor treatment machine is in use. The body of the wheel assembly can include a first end disposed below the base of the floor treatment machine, an intermediate region, and a second end extending beyond the base.

Abstract: The invention concerns a carrier plate holding an abrading element, for detachable mounting on a rotatably mounted abrading plate driven during use, for abrading stone or concrete floors, which carrier plate has sides which form an acute angle with each other.

Abstract: The invention concerns a carrier plate (2) holding an abrading element, for detachable mounting on a rotatably mounted abrading plate (1) driven during use, for abrading stone or concrete floors, which carrier plate (2) has sides (2a, 2b) which form an acute angle with each other. The sides (2a, 2b) have flanges (2a1, 2b1) which are formed for surrounding engagement with a shoulder (1a) arranged on the abrading plate (1) so that the carrier plate (2) can be fixed on the abrading plate (1) with an engagement based on form and friction.

Abstract: A tool holder or a disc-shaped working tool (18) has a working tool holding member (14) and a working tool holding counter-member (16) rotatable, together with the working tool holding member, (14) about an operational axis (A) and cooperating with the working tool holding member (14) for receiving therebetween the working tool (18) for joint rotation therewith; central securing element (26) for securing the working tool (18) between the working tool holding member (14) and the working tool holding counter-member (16); and at least one coupling element (44) associated with the working tool holding member (14), radially spaceable from the central securing element (26) and having a rotary stop for forming a releaseable plug-in connection with at least one through-bore (24) formed in the working tool (18).

Abstract: The invention relates to an arrangement in a mobile machine for screeding floor surfaces. This comprises a housing with a planet disk (3), which is rotatably supported in the bottom of the said housing and driven by a drive motor (1). The planet disk carries a number of rotatably supported screeding disks, distributed over the planet disk (3) and operatively connected to the drive motor (1). According to the invention the number of screeding disks is an even number up to a maximum of six. Viewed in the direction of rotation of the planet disk (3), half the number of screeding disks have a direction of rotation coinciding with the planet disk (3) and the remaining screeding disks an opposing direction of rotation.