The invention provides a float trowel blade attachment for cement floor finishers comprising a rectangular section of sheet metal having a top surface and a bottom surface and having its edges optionally bent upwardly, means for providing to the top surface a three-sided rearwardly open pocket on the back of the section adjacent the leading edge thereof adapted to partially receive a finish trowel blade of the finisher, a spring clip secured to the top surface or the pocket-forming means and extending rearwardly therefrom so as to be engageable with the finish trowel blade to retain the section thereon, and wherein said rectangular sheet metal has attached to its bottom surface using an adhesive or mechanical attachment material interlayer, a composite rigid abrasive element bonded to a resilient backing and wherein said abrasive element comprises a substrate of two or more non woven layers pads including holes for inserting grinding and polishing elements.

The present disclosure provides a floor grinding machine (1) for grinding floor surfaces of stone or stone-like material. The machine comprises a machine frame (2), a grinding head (3), supported by the machine frame (2), a motor (4), supported by the machine frame (2) and operatively connected to the grinding head (3), and a handle frame (5), extending from the machine frame (2), and pivotable relative to the machine frame (2). The machine further comprises a guide member (12), which is pivotable relative to the machine frame (2) and pivotable relative to the handle frame (5), a first locking device (14), for locking the guide member (12) relative to the handle frame (5), and a second locking device (13), for locking the guide member (12) relative to the machine frame (2). The disclosure further provides a handle for a floor grinding machine as well as methods of setting a position of a handle and methods of steering a floor grinding machine.

The present disclosure provides a floor grinding machine (1) for grinding floor surfaces of stone or stone-like material. The machine comprises a machine frame (2), a grinding head (3), supported by the machine frame (2), a motor (4), supported by the machine frame (2) and operatively connected to the grinding head (3), and a handle frame (5), extending from the machine frame (2), and pivotable relative to the machine frame (2). The machine further comprises a guide member (12), which is pivotable relative to the machine frame (2) and pivotable relative to the handle frame (5), a first locking device (14), for locking the guide member (12) relative to the handle frame (5), and a second locking device (13), for locking the guide member (12) relative to the machine frame (2). The disclosure further provides a handle for a floor grinding machine as well as methods of setting a position of a handle and methods of steering a floor grinding machine.

The adverse effects associated with high temperatures and warpage of parts of a shot blaster are ameliorated by providing a telescoping sleeve and valve mount and an orifice adaptor to regulate the area of the flow path from a shot reservoir to a metering valve.

The adverse effects associated with high temperatures and warpage of parts of a shot blaster are ameliorated by providing a telescoping sleeve and valve mount and an orifice adaptor to regulate the area of the flow path from a shot reservoir to a metering valve.

A walk-behind, wet/dry grinder/polisher adapted for concrete floors does not use of pulleys, belts or chains. Maintenance is significantly enhanced, as such components are typically the first to wear out and cause replacement issues. A frame with forward and rear portions pivots about a single set of right and left wheels. A planetary grinding head, powered by a propane engine, is coupled to the forward portion of the frame. In contrast to all known designs, the engine is directly, mechanically coupled to the grinding head without the use of pulleys, belts or chains. The direct, mechanical coupling to the grinding head preferably uses a centrifugal clutch. A water tank and water feed line from the water tank to the grinding head facilitate wet floor grinding and polishing. The grinding head is also encased in a shroud coupled to a tube for dust collection associated with dry floor grinding and polishing.

A walk-behind, wet/dry grinder/polisher adapted for concrete floors does not use of pulleys, belts or chains. Maintenance is significantly enhanced, as such components are typically the first to wear out and cause replacement issues. A frame with forward and rear portions pivots about a single set of right and left wheels. A planetary grinding head, powered by a propane engine, is coupled to the forward portion of the frame. In contrast to all known designs, the engine is directly, mechanically coupled to the grinding head without the use of pulleys, belts or chains. The direct, mechanical coupling to the grinding head preferably uses a centrifugal clutch. A water tank and water feed line from the water tank to the grinding head facilitate wet floor grinding and polishing. The grinding head is also encased in a shroud coupled to a tube for dust collection associated with dry floor grinding and polishing.

A method for manufacturing a structure on a surface of a workpiece (1) is disclosed, the method having the following steps: applying a liquid base layer (2) onto the surface of the workpiece (1); spraying on at least one droplet (3) into the not yet congealed base layer (2), wherein the at least one droplet (3) at least partially, preferably completely, penetrates into the base layer (2); fixing the base layer (2); and at least partially removing the at least one droplet (3).

Further, a second method having the following steps is disclosed: spraying on at least one droplet (3) onto the surface of the workpiece (1); applying a liquid base layer (2) onto the surface of the workpiece (1), wherein the base layer (2) flows around the at least one droplet (3) and preferably at least partially covers the at least one droplet (3); fixing the base layer (2); at least partially removing the at least one droplet (3).

Finally, a device for performing the methods is disclosed.

A cement surface grinding device includes a central disk which is extended upwards with a central shaft; the central disk being rotary with respect to the central shaft; at least one outer rotary disk arranged around the central disk; a bottom of the outer rotary disk being installed with a grinding sheet; and a rotary frame arranged above the central disk and the at least one outer rotary disk; the rotary frame including a connecting frame and a plurality of connecting rods; an upper side of the central shaft being connected to a central hole of a seat and the seat being connected to a lower side of the connecting frame; each outer rotary disk being formed with an outer belt wheel and the central disk being formed with a connecting element; and a belt winding around the connecting element and the outer belt wheel.

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.