Abstract: A vibrating chain saw sharpener for sharpening a saw chain that includes a cylindrical body portion; a ring portion connected to and encompassing an intermediate portion of the cylindrical body portion; a flange portion extending away from a bottom portion of the cylindrical body portion; and a hand-held power tool removably connected to an upper portion of the cylindrical body portion. Vibrations transmitted from the hand-held power tool to the ring portion are conveyed to the tooth of the chain saw, wherein the tooth is sharpened by the vibrations conveyed thereto.

Abstract: An arrangement (1) including a tool (7) and a feeler device (11) is movably guided along the edge of a workpiece (5) so that the workpiece is machined, for example, trimmed, along the edges (3) of the workpiece by the tool. The arrangement (1) can be adjusted perpendicularly to the plane of the workpiece, whereas the feeler device, which is designed for example as a Bernoulli disk (13), has a constant distance from the workpiece, so that the tool also is always guided at the correct position relative to the edge of the workpiece. Thus even for workpieces deviating from the target position, for example workpieces that are not level, the tool is always guided in such a way that the tool is correctly oriented relative to the center plane of the workpiece and, for example, the trimming of the borders at the edges of the workpiece is performed reliably.

Abstract: An inexpensive rotary grinding tool with reduced noise level of the grinding is provided. The rotary grinding tool comprises a metal disk having a grinding surface on at least a part of its surface and a holder for supporting the metal disk. The grinding surface has hard grains having a Mohs hardness in excess of 9 brazed thereon at a surface density of at least 20 grains/cm2. The holder has at its center a securing means for securing the holder on rotary shaft of a rotary drive unit. The holder and the metal disk are joined together to constitute the rotary grinding tool.

Abstract: A damage prevention tool and method is provided in which a free-floating disk is connected to an abrasion disk through a bearing structure. When the tool is actuated, the abrasion disk rotates substantially independent of the floating disk. The floating disk may have a slightly larger circumference and a non-marring friction material on its outer edge, such that the outer edge does not damage foreign objects and protects the abrasion disk, and the abrasion material mounted to the abrasion disk, from contacting foreign objects.

Abstract: A chamfering tool adapted to mount on a handheld grinder, the grinder having a guard and the grinder having a grinding face. The chamfering tool includes a fixed mount, to be attached to the guard on the handheld grinder. A moveable mount is attached to the fixed mount. A first guide face is attached to the fixed mount and a second guide face is attached to the moveable mount. The guide face defines a space there between. The space being disposed such that the grinding face of the handheld grinder contacts a work piece held against at least one of the first guide face or the second guide face. An adjustment member is fixed to one of the fixed mount or the moveable mount. The adjustment member hold the moveable guide mount in a user selected position. The adjustment member are adjustable to selectively vary a width of the space between the first guide face and the second guide face.

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: An abrasive article and method of making same wherein the abrasive article comprises a mounting assembly and an abrasive attachment assembly wherein the first interlock member of the mounting assembly and the second interlock member of the abrasive attachment assembly are configured to align the central axis of the abrasive attachment assembly and the central axis of the mounting assembly, and the first interlock member releasably engages the second interlock member. The abrasive article is adapted to clean a work surface area around studs using a rotary tool, including, for example, a drills or die grinder.

Abstract: In a method for multiple cutoff machining a rare earth magnet block, a cutting fluid feed nozzle having a plurality of slits is combined with a plurality of cutoff abrasive blades coaxially mounted on a rotating shaft, each said blade comprising a base disk and a peripheral cutting part. The slits in the feed nozzle into which the outer peripheral portions of cutoff abrasive blades are inserted serve to restrict any axial run-out of the cutoff abrasive blades during rotation. Cutting fluid is fed from the feed nozzle through slits to the rotating cutoff abrasive blades and eventually to points of cutoff machining on the magnet block.

Abstract: Various forms of knife guides are provided for knife sharpeners to minimize damage to the knife blade. The knife guides include the provision of flexible fibers on the guide surface and further include rings, such as O-rings on an array of rollers when the rollers are used to form the guide surface. Other forms of knife guides are non-contact optical arrangements.

Abstract: Various forms of knife guides are provided for knife sharpeners to minimize damage to the knife blade. One of the forms of knife guides comprises non-contact optical arrangements which includes a light source, at least one light detector and an indicator that monitors and displays the intensity of light reflected from the blade surface.

Abstract: An orbital rotary blade sharpener for sharpening rotary cutter blades and other rotary blades includes a bottom blade holding portion having a center and a perimeter edge, a top blade holding portion rotatably connectable to said bottom blade holding portion, having a perimeter and a center, a central shaft portion extending from said bottom blade holding portion through said top blade holding portion over which a rotary blade can be fitted, a radial shaft portion extending through said top blade holding portion positioned between the perimeter and the center of the top blade holding portion, and grinding portion connected to said radial shaft portion, and within said top blade holding portion, positioned to be orbitally revolvable around said bottom blade holding portion center and contactable with a blade held between said top and bottom blade holding portions.

Abstract: The present invention describes a plate comprising a mono-block body through which a plurality of holes pass, and a deflector that covers at least the external part of the upper surface of said mono-block body. The mono-block body is made up of a rigid support sunk into a flexible body and provided with a holed peripheral part. Said deflector partially or completely covers said peripheral part of the rigid support and presents in the second case a plurality of slits for the passage of the dust sucked through said holes.

Abstract: A sharpener for blades comprises a physical structure supporting at least one abrasive surface. A displaceable guiding plate having an integral linear structural feature of the support is disposed toward one side of the abrasive surface. The linear structural feature provides sliding contact with a face of the blade to establish the relative angle of the plane of the edge facet of the blade with the plane of the abrasive surface at the point of mutual contact as the facet is guided into contact with the abrasive surface.

Abstract: Objectives: To improve the cutting sharpness and life while the manufacturing cost is being lowered. Solution mechanism: The whetstone particle layer (13), which consists of multiple whetstone particle layer units (12), . . . , is configured on the surface (11a) of the whetstone substrate (11) while the respective whetstone particle layer units (12) are being mutually linked via the bridge unit (9). The non-whetstone particle unit (22) is configured between whetstone particle layer units (12) and (12). Whetstone particle layer unit (12) is obtained by configuring the superwhetstone particles (14) densely in the central unit (12a) and by configuring them sparsely in the peripheral unit (12b). The metal coupling phase (17), to which the superwhetstone particles (14) are fixed, is formed by the first and second metal plate phases (15) and (16), respectively. The thickness of the first metal plate phase (15) decreases from the central unit (12a) toward the peripheral unit (12b) in the shape of a mountain.

Abstract: Of the type designed to be attached to the propeller-shaped bases or heads of a concrete grinder, to enhance the grinding effect of said propeller-shaped bases after the latter are used without disks, it is shaped like a cross, with four equal arms which are equiangularly distributed, in the shape of an isosceles trapezoid, each of which has a curved-convex end (1), forming part of the imaginary circumferential outline corresponding to the theoretical disk, and curved-concave side edges (2-2′), which are joined to each other without a break in continuity between adjoining arms and which define a deep concave indentation (3), whose path is circumferential and whose radius appreciably coincides with the theoretical radius of the disk, so that a pair of disks may be used in a concrete grinder with two heads, working on the same plane without touching each other, by means of offsetting them angularly from each other by 45°.

Abstract: A drill bit sharpener includes a motor assembly and a drill bit grinding assembly. The motor assembly has a motor with a drive shaft to drive the drill bit grinding assembly, which includes a driven assembly, a sharpener housing, a grinding wheel assembly and a bit guide assembly. The sharpener housing is attached to the motor assembly, and the grinding wheel assembly is rotatably mounted in the sharpener housing and is rotated by the driven assembly. The bit guide assembly is mounted in the sharpener housing above the grinding wheel assembly. An adjusting screw in the bit guide assembly is used to adjust the grinding wheel assembly relative to the bit guide assembly. Multiple bit guide holes correspond to the grinding wheel assembly are defined in the bit guide assembly and allow a drill bit to pass through to abut the grinding wheel.

Abstract: An apparatus, system, and method thereof for material positioning and shaping. The apparatus includes a two-section positioning system which includes a guide and follower thereon for positioning along a path.

Abstract: Accessories for an angle grinder include a tool comprising a rotary disk having releasably attached to its surface, an annular attachment having a cutting or abrading, (“shaping”), surface, and rest means in a rest zone for supporting the grinder on a surface to be shaped. The rest means may be a non-rotating nose beneath the grinder; a rubbing contact mounted on a flat tool or simply part of the surface of a convex tool. Tilting the grinder about the rest means gives effective control of the tool. Steeper tilts cause the cutting or abrading surface to bite more deeply into the surface to be shaped. The grinder is preferably stroked toward the user with the cutting or abrading zone trailing. Most disks are perforated. Work to be shaped can be seen through the spinning disk during use. The annular attachment can have a variety of cutting or abrading surfaces.

Abstract: Disclosed is an accessory mounted on a cutting device including two mutually parallel guide bars. The accessory includes a first channel formed in the accessory for receiving one of the two mutually parallel guide bars. A second channel is formed to receive the other of the two mutually parallel guide bars in such manner that the second guide bar is freely translatable in the second channel. An affixation device is firmly affixes the accessory to one of two mutually parallel guide bars.

Abstract: A polishing cloth according to the present invention includes: a polishing cloth substrate; a pressure-sensitive adhesive layer laminated on one face of the polishing cloth substrate; and a release sheet attached to the pressure-sensitive adhesive layer in a releasable manner. The pressure-sensitive adhesive layer includes an adhesive composition containing a polymer, the polymer having a first-order melt transition in a temperature range narrower than 15° C. Thus, the present invention provides a polishing cloth and a method for attaching/detaching the polishing cloth to/from a base plate of a polishing machine such that the polishing cloth can be peeled off the base by simply cooling the base plate and the adhesive layer of the polishing cloth.

Abstract: A blade sharpener having a magazine slidably carried within a sleeve. The magazine contains two sets of three sharpening wheels carried for rotation within the magazine, which are positioned in a staggered relationship with respect to one another, such that each set of three sharpening wheels forms two sharpening interfaces. Two channels are defined in the magazine and are generally in alignment with each of the two sharpening interfaces. The magazine is movable with respect to the sleeve, and may be selectively fixed in at least three positions relative thereto with a spring-biased pushbutton. For storage or transport, the magazine is moved into the sleeve such that both sets of the sharpening wheels are housed within the sleeve. The magazine of the blade sharpener is also provided with an elongated sharpening rod which is pivotally connected to the magazine, and which is used to sharpen serrated blades.

Abstract: A bit sharpener includes a casing with a front plate having a first tube extending therefrom and a rear plate with a plurality of first holes defined therein, the rear plate having a first tubular member and a first rod centrally extending from an inner side thereof such that a guide plate is mounted to the first tubular member and a grinding member is mounted to the guide plate, a rotating member connected to the grinding member and receiving the first rod therein with two springs disposed between the grinding member, the first rod and an inner side of a front end of the rotating member, the front end of the rotating member having a cone-shaped recess defined in a front side thereof for jaws of a hand drill inserted therein to rotate the rotating member and the grinding member such that when a bit is inserted through the first hole and the vent, the bit is ground by the grinding member.

Abstract: This invention is a tool designed to sharpen rotary cutter blades. In a first embodiment, an inside-threaded clamp is screwed down upon the blade, pressing it tightly against a platform from which a threaded shank rises, and holding the blade from turning. When an upper casing containing an inside angled abrasive strip is lowered over the clamp until contact is made against the blade surface, the abrasive strip is brought into contact with the blade edge. When the upper casing is rotated around the tightened clamp, the abrasive acts upon the blade edge and thereby sharpens the edge. A second embodiment is comprised of a blade holder for holding the cutting blade stationary and a ring member with an abrasive strip which fits around the blade holder such that the abrasive strip contacts the edge of the cutting blade.

Abstract: A sharpening machine for sharpening the cutting edges of instruments, particularly the curved inner cutting edges of dental instruments, to obtain an arbitrary wedge angle. A grinding disk is provided with both a plane surface and a radiused outer edge. A shaft extension extends above the plane of the grinding disk and serves to support the instrument as it is being sharpened. The longitudinal axis of the instrument is displaced away from the axis of rotation of the shaft extension by an offset one-half distance equal to the diameter of the shaft extension thereby determining an offset angle of the longitudinal axis of the instrument with respect to the grinding disk and thus the wedge angle of sharpening of the curved inner edge of the instrument. In order to facilitate the sharpening of the curved inner edge of the instrument, the outer edge of the grinding disk is formed with a radius shorter than the radius of curvature of the instrument.

Abstract: A bevel grinder for an edge of a sheet workpiece of predetermined thickness has a generally planar support on which the workpiece lies, a head having a frustoconical grinding surface centered on an axis substantially perpendicular to the support and rotatable about the axis, and a drive connected to the head for rotating same about the axis with the surface engaging the sheet at the edge and for relatively displacing the head and workpiece. Thus the head moves along the edge so that a bevel is ground in the edge. A spacer on the head projects axially therefrom toward the support and has an axial dimension smaller than the workpiece thickness.

Abstract: A grinding chip fitting type grinding plate uses grinding chips to which cylindrical mounting portions are added, thereby facilitating the attachment and removal of the grinding chips. The grinding plate comprises a plurality of grinding chips each having a cylindrical mounting portion, a grinding chip mounting plate to which the grinding chips are attached, and a holding plate. Each of the grinding chips is provided with an O-ring attached to the cylindrical mounting portion which has a front end to which a diamond chip is bonded. A projection portion is integrally formed at a rear end of the mounting portion. The grinding chip mounting plate has a plurality of grinding chip receiving holes which are radially provided. Each of the receiving holes is a stepped hole composed of a mounting portion receiving hole and a projection receiving hole which is radially offset with respect to the mounting portion receiving hole by a predetermined eccentric amount.

Abstract: This invention is a tool designed to sharpen rotary cutter blades used for cutting fabrics. In the preferred embodiment, when a dulled blade is placed over a threaded shank, an inside-threaded clamp is screwed down upon the blade, pressing it tightly against a platform from which the shank rises, and holding the blade from turning. When an upper casing containing an inside angled abrasive strip is lowered over the clamp until contact is made against the blade surface, the abrasive strip is brought into contact with the blade edge. When the upper casing is rotated around the tightened clamp, the abrasive acts upon the blade edge and thereby sharpens the edge. Removing the upper casing and clamp, the blade is then turned over, replaced on the platform and the process repeated, thereby sharpening both sides of the blade edge.

Abstract: A sanding wheel modified to incorporate a rub collar that provides a guide surface for sanding raised wooden panels. The modified sanding wheel was specifically designed and is particularly useful for accurately and quickly sanding arched panels. The wheel includes a base support member, sanding members, and a specially adapted rub collar. The rub collar has two portions with the first or inner portion being rotated as a unit with the base support and sanding members and the second or outer portion being mounted for movement independent thereof. The second or outer portion has a guide surface and in operation, the arched portion of the raised wooden panel is abutted against the guide surface and moved therealong with the raised, arched surface to be sanded abutting the rotating sanding surfaces of the sanding members.

Abstract: Both facets of a double faceted blade are simultaneously sharpened as the facets are moved across a first pair of planar abrasive coated surfaces crossing to form a vertex and positioned to establish a total included angle at the vertex nominally equal to the intended total included angle of the edge facet. A guide structure contacts and aligns the blade so that the centerline of the blade is positioned at or near the bisection of the included angle of the abrasive surfaces. The guide structure is one or more rotatable members.