Abstract: A bayonet coupling for mounting of a tool on a drive shaft of a machining unit. The drive shaft is connected to the tool via a bayonet coupling, which includes two coupling parts. The one coupling part is provided with a receiving groove for an engaging tab placed on the other coupling part. The receiving groove has a first section with an extension parallel to the axis of rotation and the second section of the receiving groove has an extension transverse, perpendicular, to the axis of rotation, so that the tool is driven via the engagement of the bayonet coupling.

Abstract: Grinding heads rotate about central axes, have surfaces between plane and cylindrical surfaces provided with retainer grooves for edge profile parts of a number of abrasive paper members with associated support brushes. Abrasive paper members are mounted at angles of 20-40°, preferably about 30°, directed obliquely forward in the direction of rotation of the plane surface and a tangential plane of the cylindrical surface. Retainer grooves for edge profile parts of the abrasive paper members extend obliquely rearward in the direction of rotation of the plane surface at an angle of 3-10° relative to a radial extension. Alternatively, the retainer grooves extend obliquely rearward in the direction of rotation of the cylindrical surface at an angle of 3-10° relative to an axially parallel generatrix of the cylindrical surface. In a simple way a more optimal abrading of particularly outer side edges and edge areas of plate-shaped items is readily achieved.

Abstract: The invention concerns a rotating sanding/grinding/polishing tool (1) provided with a number of undercut mounting grooves (5) for mounting one or more displaceable grinding elements (4), at which is provided an annular groove (8) in a plane largely perpendicularly to the rotary axis of the tool, and a ring-shaped securing means (9) provided in the groove and a resilient means (11) along the periphery of the rotating tool (1), at which the securing means (9) has one side bearing against the resilient means (11) and another side bearing against part of the grinding elements (4).

Abstract: A channel lighting sign is provided in which the side structure of the channel lighting sign can be constructed of a translucent polycarbonate material. The channel lighting sign includes a faceplate foamed of a translucent or transparent material, such as an acrylic plastic. The side structure is shaped to conform to perimeter contours of the shape of the faceplate. At least one mounting bracket is disposed on an inside surface of the side structure at a position near a front side of the side structure. The mounting bracket holds a mounting insert formed of a material that can easily and quickly bond with the faceplate material using a solvent or bonding agent.

Abstract: A grinding apparatus for machining a workpiece (6), including an apparatus frame (2) supporting a grinding station (3) with a number of grinding heads (4) with associated grinding elements (5) arranged such that the grinding elements (5) are in contact with one surface (7) of the workpiece at the passage of the workpiece through the grinding apparatus (1), and an endless conveying means (8) for the grinding heads (4), and a roller table (9) for supporting the workpiece (6), where the grinding apparatus (1) includes a further grinding station (10) with grinding heads (4) arranged such that the grinding elements (5) are in contact with the opposite surface (11) of the workpiece at the passage of the workpiece across the roller table (9), where the roller table includes a first (12) and a second set of rollers (13), and where there is an interspace (14) between two set of rollers (12, 13), allowing passage of the workpiece between the two set of rollers (12, 13), wherein spacing (15) between individual rollers (

Abstract: The invention concerns a rotating sanding/grinding/polishing tool (1) provided with a number of undercut mounting grooves (5) for mounting one or more displaceable grinding elements (4), at which is provided an annular groove (8) in a plane largely perpendicularly to the rotary axis of the tool, and a ring-shaped securing means (9) provided in the groove and a resilient means (11) along the periphery of the rotating tool (1), at which the securing means (9) has one side bearing against the resilient means (11) and another side bearing against part of the grinding elements (4).

Abstract: The present invention relates to a profile strip (1), preferably for a cylinder drum (5) comprising a bottom strip (3) which is designed for replaceable retention of a bottom profile (2) comprising a number of brushes (6) and a number of grinding elements (8) and where the grinding element (8) along the length of a side edge (10) is provided with an edge zone (13) without grinding effect.

Abstract: The present invention concerns an apparatus (1), preferably for grinding a surface, including at least one grinding unit, a screen (2, 3) and a guide member (5), where the grinding unit is a rotatable and preferably horizontally arranged grinding cylinder, which at a cylinder surface is provided with a number of preferably exchangeable grinding elements, where the screen (2, 3) entirely or partly encloses the grinding unit, and where the guide member (5) is connected with the screen (2), and where the screen includes an outer screen (2) and an inner screen (3) which are mutually movably connected, and where the inner screen (3) includes a first suction screen (11) and a second screen (12) which are mutually movably connected.

Abstract: The present invention concerns a grinding apparatus (1) including a number of grinding units (3), a number of drive units (11) and a number of screen units (2), where a number of the grinding units (3) are enclosed by at least one of the screen units (2), and where at least one the screen units (2) is arranged with a pipe connection (4) adapted for connecting one or more suction units (21), where the screen unit (2) with the pipe connection (4) is designed along a lower edge (6) with a number of spacer members (7) that are arranged adjustable and replaceable, and a number of sealing members (8) that fit tightly to an underlying surface, that the spacer members (7) establish an adjustment of spacing of the grinding units (3) relatively to an underlying surface, and that the sealing members (8) interact with the suction units (21) for forming a vacuum that holds the grinding apparatus (1) against the said surface during operation.

Abstract: The present invention concerns a grinding wheel (1) including a circular wheel that rotates about a central axis and with a surface (2) to which edge parts of a number of sand paper items (3) are fastened, and that the surface (2) has increasing height inwards from a periphery (6) of the surface (2), and that the sand paper items (3) have approximately the same height and are mounted mainly perpendicularly to the surface (2) of the wheel and have approximately radial extension over the greater part of the radius of the surface (2).