Abrasive devices suitable for use in cylinder style floor cleaning machines for the purpose of deep cleaning, restoring, honing and/or polishing are described. The abrasive devices include an elongated body and abrasive structures extending, at least in part, radially outward from an outwardly facing body surface, and relative to a rotational axis of the elongated body.

A broom attachment is provided for a rotary sweeper assembly that includes a broom mount and a broom unit mountable to the broom mount. The broom attachment includes a plurality of broom attachment bristles and a support member having a retained portion and a retaining portion. The plurality of bristles extend from the retaining portion and the retained portion is operatively mountable to at least one of the broom mount and the broom unit. A broom assembly includes at least one broom attachment. When the broom attachment is operatively mounted to the broom mount, the broom attachment bristles are positioned at a greater radial distance away from an axis of rotation than the cleaning bristles of the broom unit. A method of assembling a broom attachment to a broom mount includes operatively mounting the retained portion to the broom mount.

A spacer device for a grinding roller, in particular of a grinding machine, including a main body to which at least two rolling bodies are rotatably mounted and wherein the spacer device can be supported by way of the at least two rolling bodies against a surface to be ground during a grinding process. At least one fixing device is arranged, preferably centrally, between the at least two rolling bodies and with which the grinding roller can be preferably releasably fixed to the spacer device. Furthermore, an adjusting device allows the grinding roller in a state of being fixed to the spacer device to be adjustable relative to the main body and/or at least one of the at least two rolling bodies.

Disclosed herein are walk behind grinding tools with horizontally aligned guides and grinding drum. One embodiment relates to a grinding tool with a pair of guides on opposing sides of a blade set of a grinding drum, where the pair of guides is configured to limit a grinding depth of the grinding drum. At least a portion of a guide curvature is generally concentric with a mill curvature, and a guide radius is less than a mill radius. Another embodiment relates to a grinding system including a grinding tool with a vacuum shroud hingedly attached to a front of a main body of a grinding housing, and a vacuum including a vacuum tube in fluid communication with the vacuum shroud. Another embodiment relates to a method of forming a grinding tool.

A floor sander comprising a drive motor, a horizontal rotating drum having a top and a bottom driven by the drive motor and a housing covering the top of the rotating drum, wherein the rotating drum supports and drives sandpaper continuously, and the bottom of the rotating drum is exposed to sand a floor; wherein the floor sander has a blower impeller driven by the shaft of the drive motor to create an air flow that is fluidly conducted by a channel mounted on the outside of the housing and the air flow is directed toward the rotating drum to cool the drum.

A hand-held electric power tool for grinding sheetrock particularly adapted to making butt joints have a tapered or recessed juncture for filing with tape embedded with mud such that the joints are ready for painting or covering with wallpaper without being noticeable. The tool includes a grinding cylinder with barbs protruding therefrom which cut or grind the sheetrock edges without penetrating the full depth of the sheetrock or otherwise weakening or damaging the butt joint.

The present invention relates to a milling drum for removing glued-down floor coverings, in particular wooden floor coverings, preferably parquet floor coverings, in particular multilayer parquet, with a predetermined milling width which determines the width of a floor surface section by running the milling drum over the floor surface section to be machined, having a plurality of cutting plates which are arranged tangentially on the milling drum and which are arranged in a distributed manner on the milling drum, such that, upon a complete revolution of the milling drum, the entire milling width is operable with at least one cutting plate and such that a common width of the cutting plates being in contact simultaneously with the floor surface section to be machined is always smaller than the milling width. The present invention further relates to a surface milling cutter for removing glued-down floor coverings by use of such a milling drum, and a method for removing glued-down floor coverings by use of such a surface milling cutter.

The present invention relates to a milling drum for removing glued-down floor coverings, in particular wooden floor coverings, preferably parquet floor coverings, in particular multilayer parquet, with a predetermined milling width which determines the width of a floor surface section by running the milling drum over the floor surface section to be machined, having a plurality of cutting plates which are arranged tangentially on the milling drum and which are arranged in a distributed manner on the milling drum, such that, upon a complete revolution of the milling drum, the entire milling width is operable with at least one cutting plate and such that a common width of the cutting plates being in contact simultaneously with the floor surface section to be machined is always smaller than the milling width. The present invention further relates to a corresponding surface milling cutter, and a corresponding method for removing glued-down floor coverings.

Embodiments relate to a surface processing device that may be used to surface process concrete or other hard suitable surfaces. A surface processing device comprises a plate, a bearing, and a plurality of bush heads. The plate has a top and bottom. The bearing can be attached to the top of the plate to facilitate rotation of the plate. The plurality of bush heads can be attached to the bottom of the plate. Each bush head comprises a bracket and a grinding wheel.

A broom attachment is provided for a rotary sweeper assembly that includes a broom mount and a broom unit mountable to the broom mount. The broom attachment includes a plurality of broom attachment bristles and a support member having a retained portion and a retaining portion. The plurality of bristles extend from the retaining portion and the retained portion is operatively mountable to at least one of the broom mount and the broom unit. A broom assembly includes at least one broom attachment. When the broom attachment is operatively mounted to the broom mount, the broom attachment bristles are positioned at a greater radial distance away from an axis of rotation than the cleaning bristles of the broom unit. A method of assembling a broom attachment to a broom mount includes operatively mounting the retained portion to the broom mount.