A grinding element has an abrasive surface and an abutment surface which is offset by an offset from the abrasive surface. A grinding depth can be adjusted by changing the offset. The grinding element may be a grinding belt.

An abrasive tool (200) for a floor grinder, the abrasive tool (200) comprising an attachment plate (230) arranged to releasably attach to a tool holder of the floor grinder, the abrasive tool (200) also comprising an abrasive tool section (220) at least partly formed in an abrasive material, wherein the attachment plate (230) comprises a supporting surface (235) at least partly formed in a plastic material, wherein the supporting surface (235) is configured to align with a corresponding surface (510) on the abrasive tool section (220), wherein the attachment plate (230) and the abrasive tool section (220) are held together by one or more welds.

The present disclosure relates to a tool for sanding and buffing an irregularly shaped surface that includes a head having a rounded surface, a first abrasive material adapted for sanding or buffing, the first abrasive material attached to the rounded surface via an adhesive substance or other attaching means and at least partially covering the rounded surface, and a handle attached to the head. The tool may further include a second abrasive material attached to the rounded surface via the adhesive substance or other attaching means that at least partially covers a portion of the rounded surface not covered by the first abrasive material. If the first and second abrasive materials have varying properties such as their coarseness, the user may find each material to be especially efficient for use in separate sanding, buffing, or polishing processes.

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.

A floor polishing or grinding pad assembly is provided. In one aspect, a polishing or grinding pad assembly employs a fibrous pad, a reinforcement layer or ring, and multiple floor-contacting disks. In another aspect, the reinforcement layer includes a central hole through which the fibrous pad is accessible and the fibrous pad at the hole has a linear dimension greater than a linear dimension of one side of the adjacent reinforcement layer. In yet another aspect, at least one of the floor-contacting disks has an angle offset from that of a base surface of the disk, the fibrous pad and/or the reinforcement layer. A further aspect employs a smaller set of disks alternating between and/or offset from a larger set of the disks. In another aspect, the reinforcement layer includes a wavy or undulating internal edge shape.

A floor polishing or grinding pad assembly is provided. In one aspect, a polishing or grinding pad assembly employs a fibrous pad, a reinforcement layer or ring, and multiple floor-contacting disks. In another aspect, the reinforcement layer includes a central hole through which the fibrous pad is accessible and the fibrous pad at the hole has a linear dimension (x) greater than a linear dimension (y) of one side of the adjacent reinforcement layer. In yet another aspect, at least one of the floor-contacting disks has an angle () offset from that of a base surface of the disk, the fibrous pad and/or the reinforcement layer. A further aspect employs a smaller set of disks alternating between and/or offset from a larger set of the disks. In another aspect, the reinforcement layer includes a wavy or undulating internal edge shape.

A grouting pan assembly includes a reinforcement ring. In another aspect, a grouting pan includes a substantially planar bottom surface and a curved sidewall surrounding the bottom surface. In a further embodiment, a grouting pan assembly includes a grouting pan having a post or mechanical fastener extending from a backside thereof for attachment to a reinforcing ring or layer.

An adapter clip to be used to mate an abrasive support plate to the drive plate of a floor finishing machine used to grind and/or polish concrete and stone flooring is designed with an internal aperture shaped to conform to and clip onto a protuberance on an upper surface of an abrasive support plate and an external shape to mate with a mounting recess formed on the machine's drive plate.

The present invention relates to an accessory for a polishing machine, suitable for the incorporation thereof in a polishing machine comprising a plurality of blades, characterized in that it comprises abrasive means and magnetic means, wherein the abrasive means and the magnetic means are mutually fitted out so as to be mutually fixable, the magnetic means in turn being fitted out for the incorporation thereof in the blades, with the abrasive means thereby being incorporated in the blades through said magnetic means, and with the same blades also being suitable and having movement capacity to allow floor polishing by means of the abrasive means incorporated therein.

A tool for a floor machine. The tool includes a base having a plurality of slots, and a cleaning element provided in each of the slots. The cleaning elements are oriented along a secant or chord of the base. The cleaning elements have abrasive portions with abrasive grit thereon, and may be non-planar at least at a portion of the abrasive portion.