Abstract: A machining apparatus, comprising: a mounting member to be rotationally driven; a tool support member mounted on the mounting member; and a fixing member, fixed to the mounting member, for fixing the tool support member to the mounting member. The mounting member has a mounting outer peripheral surface of a generally cylindrical shape, a cylindrical mounting hole as a through-hole is formed in the tool support member, and the tool support member is mounted on the mounting member by fitting the mounting hole of the tool support member onto the mounting outer peripheral surface of the mounting member.

Abstract: A frame for a portable power sander, the frame convertible into a stand for supporting the power sander in a stationary orientation wherein the abrasive belt is accessible, said frame comprising: a base; a leg connectable to the base, and a fence assembly connectable to the base.

Abstract: A support stand (2) for a sanding apparatus having a housing, a motor, and a sanding belt of abrasive material adapted to be driven around a plurality of rollers by means of the motor is disclosed. The support stand (2) comprises a body portion (6) having recesses (10, 14, 18, 22) for engaging corresponding parts of the sanding apparatus to expose the sanding belt of the sanding apparatus, and a control knob (26) mounted to the body portion (6) to be accessible by a user's hand when the sanding apparatus is supported on the support stand (2). The support stand also has a wheel (36) having a friction belt (38) for engaging a belt speed adjustment knob of the sanding apparatus to enable adjustment of the speed of the sanding belt of the sanding apparatus in response to rotation of the control knob (26) in order to control the rate of removal of material by the sander.

Abstract: An adjustable moveable support for an existing drywall sander. A plurality of legs are centrally mounted and extend from a collar to rotating caster wheels which rest on a floor. The caster wheels allow for movement of the moveable support. Extending through the collar is a vertical boom with a mounting sleeve at one end of the vertical boom. An existing pole-like drywall sander may be mounted in the mounting sleeve. The height of the vertical boom may be adjusted to place the existing drywall sander in proximity to a drywall surface to be sanded. Control handles mounted on the legs allow an operator to engage the sander on the drywall sander on the drywall surface to be sanded. The caster wheels allow the device to be readily moved to appropriately sand seams or other surfaces in the drywall. A control handle may be mounted on either side of the adjustable support so that it may be used with equal ease by left-handed or right-handed users.

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 removable surface positioning guide for a rotary hand-held tool provides one or more adjustable features for selective positioning of a surface engaging bit driven by the rotary hand-held tool. The surface positioning guide may include a pivot joint between a guide base and a mounting adapter. The guide base pivots relative to the mounting adapter about the pivot joint between operable positions. The surface positioning guide may include at least one spring supported by the mounting adapter either directly or indirectly that biases a guide base axially away from the mounting adapter. The guide base is movable toward the mounting adapter against the biasing of the at least one spring to effect a plunging movement. The surface positioning guide may include a reversible or interchangeable base flange with differently configured faces that are adapted to be placed against a working surface.

Abstract: An apparatus to facilitate the replacement of a grinding wheel secured to a mounting plate. The apparatus includes a frame having two spaced-apart uprights. An elongated support bar extends between and is pivotally mounted to the uprights while a mounting plate of a grinding wheel is detachably secured to the support bar. A lift table is mounted to the frame between the uprights and movable between a raised position in which the lift table is positioned adjacent the support bar and a lowered position in which the lift table is spaced downwardly from the support bar. The lift table is dimensioned to support a grinding wheel. An actuator is mounted to the frame and selectively moves the lift table between its raised and lowered positions.

Abstract: A coupling structure for grinding members adopts a removable structure to fasten a grinding member to a pneumatic tool. One or more grinding member may be mounted on the coupling structure according to requirements. The coupling structure may be used repeatedly to reduce costs.

Abstract: An apparatus may include a stand, a tire mount supported by the stand and releasably attachable to a tire, a tire rasp, and a tire rasp mount attachable to the tire rasp. The tire rasp mount includes a pair of handles. A four bar support pivotally attaches the tire rasp mount to the stand using hime joints. A motor operably rotates the tire and the tire rasp in opposite directions. An operator can manually move the tire rasp into contact with the tire and apply pressure between the tire rasp and the tire to texturize tread surfaces of the tire. A method is also disclosed which includes forming slices and grooves into the tread surfaces of the tire while maintaining the thickness of the tread. The slices and grooves may extend circumferentially around portions of the tread surfaces of the tire, and about 1/32-inch to about 1/16-inch deep.

Abstract: A pair of hydrostatic radial bearing devices 42, 43 is mounted on right and left side surface of a front portion of a wheel slide 34 in order to support rotatably wheel shafts 45, 52 respectively. A thrust bearing device 45 mounted in either one of wheel shafts 45, 52 supports either wheel shaft 45 or 52 in a thrust direction. A shaft coupling mechanism 60 is installed in wheel shafts 45, 52. A taper cylindrical portion 61 is projected from either one of wheel shafts 45, 52 and fitted tightly with a taper inside opening 65 formed in remaining of wheel shafts 45, 52. A vertical end surface 52t, 49t or Fb extending from a base of the taper cylindrical portion 61 is fitted tightly with another vertical end surface 45t, 52t or 45t of the remaining wheel shaft 45 or 52.

Abstract: An apparatus and method for smoothing unfinished surfaces is disclosed. A sanding head having a formed abrasive surface is secured to the mandrel of a rotational tool. A user is able to finish and smooth irregular and fanciful shapes cut into wood or plastic products using power from the tool where previously such operations were performed by extensive hand sanding or polishing. In a second embodiment of the invention, the sanding head is configured to conform to the size and shape of standard router heads currently available on the market. It also uses the standard router guide bearings, which allow it to be used to surface the area that a router has previously cut. In another embodiment of the invention, a standard sanding roller can be mounted on the rotating tool in place of the sanding head for appropriate applications.

Abstract: A detachable fixture of a rotary machining tool (3) on the tool spindle (2) of a machine tool and in particular of a grinding wheel flange (4) on the spindle nose (1) of a grinding spindle (2) is provided with two clamping rings. By means of the Cardanic located clamping rings (10, 13), the clamping force F generated by turning a clamping screw (7) is distributed uniformly on the spindle flange (6). The tool fixture according to the invention permits even large and heavy driven tools with high demands on stiffness and repeatability with respect to radial and axial runout and quality of balance to be changed with little time expenditure.

Abstract: A bi-directional rotation pneumatic grinding tool for grinding surfaces includes a body which has an operation section and a grasp section. The operation section drives an output shaft to rotate in two directions. The output shaft has positive threads in the interior and reverse threads on the outside and is coupled with a fastening mechanism. The fastening mechanism includes a coupling head which has one end forming a fastening section with reverse threads formed thereon. The front section of the output shaft is coupled with a connection member which has other end forming a latch section with reverse threads formed thereon. The latch section is coupled with an anchor member. A fastener with positive threads runs through the anchor member and engages with the positive threads on the inner wall of the output shaft.

Abstract: A power tool having a receptacle for securing a tool to a drive shaft thereof is disclosed. The receptacle comprises a receiving opening, preferably being arranged on the tool. The receiving opening engages a securing section preferably being provided in a raised fashion on the drive shaft of the power tool, thereby effecting a positive fit. The securing section comprises a plurality of rounded tips arranged at even radial distances from said longitudinal axis, at angular intervals between each other, each rounded tip having a pair of lateral flanks extending from a common apex toward an intermediate section connecting lateral flanks of a pair of adjacent rounded tips. Preferably the receiving opening comprises a number of rounded tips which is twice the number of rounded tips provided on the raised section.

Abstract: In one embodiment, the present invention includes an apparatus including an adaptor body having a first end to be coupled to a rotary device and a second end having a tapered portion, and a tool adaptor dimensioned to fit within the tapered portion, the tool adaptor having a receiving end to receive a tool, such as a bit.

Abstract: A bi-directional rotation pneumatic grinding tool for surface grinding operation consists of an operating section and a handgrip. The operating section includes an actuator to drive a transmission axle to rotate in two directions that has a spline section and a screw hole to couple with a first and a second splined trough of a coupling member and a fastening member, and a fastening element which has screw threads to run through the fastening member and fasten to the screw hole of the transmission axle. The invention may rotate in a positive or inverse direction to meet different requirements without loosening off. The design of spline section and splined troughs makes fabrication and assembly easier without concerning screwing direction. And sparks, grinding debris or dusts generated during grinding operation may be directed in a desired direction without polluting the working environment, hurting people, or damaging the work pieces.

Abstract: A circular saw includes a worktable, a mounting seat extending upwardly from the worktable for mounting a motor thereon, a blade supporting unit pivotally mounted on the mounting seat at a pivot end so that an opposite free end is turnable to be close to and away from the worktable, and a saw blade shaft mounted rotatably on the blade supporting unit about a blade axis parallel to an output shaft axis of an output shaft of the motor and having a saw blade mounted thereon. The saw blade shaft is coupled to the output shaft by a drive transmitting unit which transmits driving force of the output shaft to the saw blade shaft so as to rotate the saw blade.

Abstract: This device for the treatment of surfaces is specifically conceived as an addition to motor-driven hand tools. It includes a device mounting that can be installed securely in position on a housing component of a motorized driving unit in such a way as to be removable at will. The device also includes a tool mounting, which is designed specifically for an instrument that rubs and polishes surfaces. The device further includes a peripheral component, extending from the center, which is connected to the tool mounting in a manner such that the turning of the peripheral component, around a rotation axis, of this peripheral component sets the tool mounting in motion. The tool mounting is mounted in relation to the device mounting, in a manner such that it can be tilted, and a mechanism is envisioned, which will basically prevent the tool mounting from turning about on the rotation axis of the peripheral component, and which will simultaneously allow for the tilting of the tool reception.

Abstract: A reusable mounting device which includes a support member having a support pad (32) secured to a hollow cylindrical body (42) by way of a compression ring (46). The hollow body defines a recess which receives a nut (18) that is adapted to protrude through a central aperture in an abrasive disc (1) and includes an irregular surface (22) providing an interference fit between the nut and the aperture in the disc. The nut extends into the hollow cylindrical member and includes an internal threaded bore adapted for threadable engagement with a drive member (30) which forms a part of or is attached to a portable power tool.

Abstract: A suspension device for coupling a surface maintenance appliance to a surface maintenance machine is disclosed. The suspension device includes a carriage member movably supported upon the maintenance machine through a plurality of linkages coupled to the carriage member. Together the plurality of linkages permit the carriage and surface maintenance appliance to follow undulations in the floor surface during operation of the surface maintenance machine. An actuator engages a lost motion device to lift the carriage member away from the ground surface. A variety of different floor surface maintenance appliances may be coupled to surface maintenance vehicles according to aspects of the present invention.

Abstract: A ski sharpening arrangement includes a portable powered grinder adapted to be manipulated by one hand of a user. The arrangement includes a motor assembly spaced from a ski having a top surface, a base, a side edge and a bottom edge coplanar with the base. The motor assembly drives an endless belt having an abrasive surface about an axis of rotation transverse to a plane of the base. The endless belt is entrained about a mounting framework extending from the motor assembly, and engaged against the side edge of the ski to provide sharpening thereof. A support structure is suspended from the mounting framework of the belt and is adapted to be manipulated by another hand of the user for guiding, stabilizing and changing the angle of the abrasive surface relative to the side edge of the ski.

Abstract: A power tool having a receptacle for securing a tool to a drive shaft thereof is diclosed. The receptacle comprises a receiving opening, preferably being arranged on the tool. The receiving opening engages a securing section preferably being provided in a raised fashion on the drive shaft of the power tool, thereby effecting a positive fit therebetween. The receiving opening has a cross section comprising a plurality of bulges displaced outwardly from a center axis of the drive shaft.

Abstract: An appliqué film and paint removal tool includes a central rotating shaft, a spring-loaded locator pin, at least three freely rotating bearings, an arbor, and a collar. The rotating shaft may be centered with the locator pin and pushed down until the bearings touch the surface from which the appliqué or paint material is to be removed. By rotating while touching the mold line contour of the fastener the bearings will cause the appliqué film or paint treatment to separate around the mold line of the fastener. The separated material than can be peeled off and the fastener is accessible. Therefore, the appliqué film or paint treatment can be removed from fasteners without damaging the surface around the fastener. The appliqué film and paint treatment removal tool may be designed to accommodate all fastener diameters and mold line contours.

Abstract: This device for the treatment of surfaces is specifically conceived as an addition to motor-driven hand tools. It includes a device mounting that can be installed securely in position on a housing component of a motorized driving unit in such a way as to be removable at will. The device also includes a tool mounting, which is designed specifically for an instrument that rubs and polishes surfaces. The device further includes a peripheral component, extending from the center, which is connected to the tool mounting in a manner such that the turning of the peripheral component, around a rotation axis, of this peripheral component sets the tool mounting in motion. The tool mounting is mounted in relation to the device mounting, in a manner such that it can be tilted, and a mechanism is envisioned, which will basically prevent the tool mounting from turning about on the rotation axis of the peripheral component, and which will simultaneously allow for the tilting of the tool reception.

Abstract: A combination abrasive disc and backing plate provide workpiece viewing and blowing collectively through aligned viewing apertures. The backing plate has a bottom surface adapted to support the abrasive disc and an opposed top surface. Coordinated alignment of the viewing apertures of the disc and plate allows observation of a workpiece collectively through the disc and plate during rotary drive thereof. The plate's viewing aperture is partially adjoined by a scoop formation on the plate's top surface. The scoop is arranged for deflecting air from above the plate's top surface and consequently forcing such in a current collectively through the aligned viewing apertures of the disc and plate. This blowing current acts to both blow away debris from the field of view and thereby reduce viewing impairment, as well as to provide some cooling to the workpiece.

Abstract: A slip proof device for a chuck includes a recessed area adapted to receive therein a collar, a through hole defined through a bottom face defining the recessed area to allow a bit to extend therethrough, and a first threaded hole defined in a periphery of a side wall defining the recessed area so as to adapt to correspond to one of three cavities in the collar and to allow a first abutting element to extend through the first threaded hole and one of the cavities to secure the slip proof device relative to the chuck. The bit includes a free end adapted to be clamped by the three claws of the chuck and a truncated surface longitudinally defined on the bit such that a second abutting element is able to abut the truncated surface to secure the bit relative to the slip proof device.

Abstract: A finishing machine having a sandpaper positioning function includes a frame, a rotation wheel rotatably mounted on the frame, a sandpaper bonded on the rotation wheel, and an O-ring mounted on the rotation wheel and urged on the sandpaper. The rotation wheel has a periphery formed with an annular flange radially extending inward. The annular flange has an inner periphery formed with an annular groove. The O-ring is inserted into the annular groove of the rotation wheel and urged on the annular flange of the rotation wheel so as to position the sandpaper rigidly and stably.

Abstract: A device for sharpening ski edges and the like which is useful in sharpening both the side and bottom edges of skis is disclosed. The device is operable easily by an individual, is portable and allows a bevel to be sharpened into the edge where desired quickly and easily.

Abstract: A grinding tool includes a handle with a driving device for driving a grinding member connected to a shaft extending from the driving device. A cone-shaped recess is defined in a distal end of the shaft and a flexible cone-shaped piece is received in the cone-shaped recess of the shaft. The grinding member has a shank extending through the flexible cone-shaped piece and a retaining cap is mounted to the shank and threadedly mounted to the shaft. The grinding member can be replaced with a grinding wheel and a fender is rotatably mounted to the shaft. A quick release device is connected to two lugs on the C-shaped collar of the fender so that the fender can be conveniently loosened and rotated by operating the quick release device.

Abstract: A structurally improved stone cutter including a rectangular frame supported by a foldable stand, a rectangular sink in the frame, a rectangular platform having sliding devices on two end slidably engaged with a pair of guide rods of the frame, a brace secured to a corner of the frame for supporting a positioning plate on the top, a motor positioned on a top having a first wheel on one end, a tubular shaft releasably secured to an underside of the positioning plate opposite to the motor and having a spindle therein supported by bearings, a second wheel secured to one end of spindle, a fan cap and a saw blade secured to the other end of the spindle, a belt tensely wrapped on the first and second wheels, a blade guard positioned on the top of the saw blade and secured on one end to an outer lateral surface of the positioning plate and a working station having a L-shaped edge releasably engaged into the gap of the frame.

Abstract: A combined rotary hand tool and accessory attachment includes a rotary hand tool having an output shaft and a nose end associated with the shaft. An accessory attachment has a mounting portion configured for releasable attachment to the nose end and an engagement formation provided to the nose end and the mounting portion and configured so that the mounting portion is securable upon the nose end upon an approximate ¼ relative rotation.

Abstract: A traverse carriage and operator arrangement for transversely adjusting the abrader unit or units of a mobile surface abrading apparatus to facilitate more precise abrading of the underlying road or other surface. In a preferred embodiment the traverse carriage is mounted on a cross-member by means of rollers and is operated by a specially designed, fluid-operated cylinder horizontally oriented in the mobile surface abrading apparatus and attached to the traverse carriage and the apparatus frame for moving the traverse carriage along the cross-member and positioning the abrader unit a selected distance along the cross-member transverse to the longitudinal movement of the mobile surface abrading apparatus.

Abstract: The invention relates to a cutting device that is provided with a traveling mechanism and a cutting disc that can be rotatably driven by a drive unit. The drive unit and the cutting disc are arranged on a support frame. An undercarriage is movably fixed to the support frame. A relative position can be adjusted between the undercarriage and the support frame by means of an adjustment device. The adjustment device is provided with a coarse adjustment device for adjusting at least two discrete relative positions and a fine adjustment device, which overlaps the effect of the coarse adjustment device in at least one of the discrete relative positions. The fine adjustment device is used for adjusting any relative position in a determined area.

Abstract: An accessory for a power hand tool including a rolling support structure for supporting and carrying the hand tool over a substrate at a user-selected or preselected working depth or height of the disc grinder or sander or similar material processor is disclosed. The accessory includes a support bracket having a longitudinal axis for attachment to a portion of the housing at an intermediate position of the support bracket, together with a pair of substrate-surface engaging rollers adjustably secured to the support bracket at mounting locations longitudinally separated from the intermediate attachment position. For a power hand tool having a housing including a cylindrical outer surface portion coaxially aligned with the drive shaft of the power tool, the attachment portion of the accessory includes a corresponding concavity for being installed about the cylindrical portion of the housing in nesting relationship with a clearance fit therebetween to allow for angular adjustment therebetween.

Abstract: An accessory for a power hand tool including a rolling support structure for supporting and carrying the hand tool over a substrate at a user-selected or preselected working depth or height of the disc grinder or sander or similar material processor is disclosed. The accessory includes a support bracket having a longitudinal axis for attachment to a portion of the housing at an intermediate position of the support bracket, together with a pair of substrate-surface engaging rollers adjustably secured to the support bracket at mounting locations longitudinally separated from the intermediate attachment position. For a power hand tool having a housing including a cylindrical outer surface portion coaxially aligned with the drive shaft of the power tool, the attachment portion of the accessory includes a corresponding concavity for being installed about the cylindrical portion of the housing in nesting relationship with a clearance fit therebetween to allow for angular adjustment therebetween.

Abstract: A method of polishing an object is disclosed. In one embodiment, the method comprises the steps of creating a polishing zone within a magnetorheological fluid; determining the characteristics of the contact between the object and the polishing zone necessary to polish the object; controlling the consistency of the fluid in the polishing zone; bringing the object into contact with the polishing zone of the fluid; and moving at least one of said object and said fluid with respect to the other. Also disclosed is a polishing device. In one embodiment, the device comprises a magnetorheological fluid, a means for inducing a magnetic field, and a means for displacing the object to be polished or the means for inducing a magnetic field relative to one another.

Abstract: A flexible adapter for use with rotary tools typically employed in a construction environment for driving a rotary tool by a prime mover. In its most fundamental embodiment, the flexible adapter for use with rotary tools exhibits a construction having a mechanical rotary tool such as a wire brush tool or a sanding disc tool for use on a work surface. A prime mover such as an electric drill is supplied for providing rotary motion to the mechanical rotary tool. A flexible member such as a suitable length of stainless steel cable is provided for connecting the mechanical rotary tool to the prime mover for driving the mechanical rotary tool and for absorbing the torque generated by the prime mover to ensure control of and to improve the efficiency of the mechanical rotary tool.

Abstract: A stone cutter includes a working station separated at center by a partition to form a water sink and a motor compartment. The motor has a shaft inserted through the partition entered into the water sink and connected to a disk saw. A water trough in four sides of the working station. A pair of rulers having the serrations on outer edge on opposite side and a rail formed on the other side of the working station. A bar pivoted with a dividing circle slidably inserted into the rail for cutting the angled working pieces. A slidable guide slides between the rulers for cutting the rectangular working pieces. And a second working plate can be sloped on the motor compartment for cutting the oblique edge of the working pieces in different angle less than 90 degrees.

Abstract: A pivoting arm cut-off saw is provided having a base, a cutting arm assembly and a lock bar. Cutting arm assembly is pivotally attached to the base and shiftable between a raised and lowered position. A lock bar interposed between the base and the cutting arm is slidably moveable between an unlock position where cutting arm assembly is free to pivot and a locked position in which a locking portion of a lock bar is interposed between a fixed stop on the base and a rotating stop on the cutting arm. The lock bar is provided with a grip portion to be grasped by the user enabling the lock bar to be moved between a pair of limit stops.

Abstract: A grinding wheel replacement safety structure for handheld grinding wheel device is located between a transmission grinding wheel fitting end and an actuating push button, and includes a safety button, a stop in, a limit actuating link, a link spring, and a stop in spring. The safety button is located above an umbrella-shaped gear of the fitting end and has a button face projecting from a grinding wheel housing. The stop pin extends vertically across a rear end of the button face proximate to a hub of the gear. The limit actuating link extends transversely across an offset surrounding wall of the safety button proximate to the actuating push button. The link spring is fitted over the limit actuating link and the stop pin spring is fitted over a neck portion of the stop pin to respectively abut against the inner wall of the housing.

Abstract: A set of spacing clips and a method of use therefor are described. Polishing pads utilized in wafer polishing machines, such as the MirraTrak™ and MiraMesa™ polishers made by Applied Materials, Inc., must be centered on polisher's platens. The polishing pads are generally of a larger diameter than the platens, and are held on the platen by a pressure-sensitive adhesive present on the backside of the pads. Each centering clip has two surfaces that are spaced apart from each other by the distance that a polishing pad will overhang the platen when properly centered on the platen. One surface of each of two centering clips is butted up against the edge of the circular pad and clamped to the pad. As the pad is lowered into place on the circular platen, the other surface of each clip is butted against the outside edge of the platen, ensuring that the pad will be centered on the platen when the adhesive backed pad contacts the platen.

Abstract: The present invention provides a drive for a grinding wheel of a cam grinding machine, in which case an electric motor is provided with a drive wheel, the drive wheel is provided with equispaced, annular recesses, the annular recesses are fitted on the radial surfaces with permanent magnets, a grinding spindle rotor is provided with equispaced, annular recesses, the radial surfaces of the annular recesses are fitted with permanent magnets, and the annular recesses, fitted with permanent magnets, of the drive wheel and the rotor intermesh.

Abstract: Disclosed are a balancing apparatus for a grinding stone to automatically adjust the balance of the grinding stone during the rotation of the grinding stone and a wheel grinder having the balancing apparatus. The balancing apparatus has a flange having a ring-shaped weight groove, a weight member received in the weight groove and a fluid filled in the weight groove. The weight groove is covered with cover. When the grinding stone rotates at high speed, the balance of the grinding stone is automatically adjusted by means of the weight member, thereby rapidly accomplishing the balance adjustment of the grinding stone. In addition, separate balancing process is not demanded after the dressing process due to the abrasion of the grinding stone.

Abstract: The present invention relates to an electric sharpening machine for chain saws capable of correctly sharpening the teeth of every kind of saw; this system according to the invention allows to rotate all the upper group with the motor and the grinding wheel, to balance the chain stop situated on the vice and, in addition, to turn the saw of 180°; in this way it is possible to let the abrasive vice sharpening the saw teeth rotate, both in case of left and right teeth, towards the inner part opposite to the position of the operator.

Abstract: A motorized spindle assembly for a grinding wheel is fabricated with an opening extending through the spindle casing, and stator and so as to extend in the direction of the spindle axis of rotation at least the length of the stator. The opening is of a size, depth, configuration and disposition so that when the spindle assembly is utilized to grind a workpiece and to do so is moved towards the workpiece, that portions of the workpiece are received within the opening thus permitting the spindle assembly and its grinding wheel to be moved as close as possible to the workpiece axis of rotation. The motorized spindle assembly is carried by a wheelhead for coaction with an additional spindle assembly carrying a grinding wheel with a larger radius. The larger radius grinding wheel is utilized to rough grind cam lobes and the smaller grinding wheel is utilized to finish grind the cam lobes and to grind concave cam contours for the cam lobes.

Abstract: A back-up pad for pad for supporting an abrasive article. A preferred embodiment of the invention provides a back-up pad having a dust collection groove, in which the engagement component for securing the abrasive article is attached to the dust collection groove surface. The present invention also provides a method for forming a back-up pad with a dust collection groove.

Abstract: A tile saw includes a base, a frame supported on the base, a sliding table supported on the frame, an arm mounted to the frame, and a rotary saw mounted to the arm for cutting tile or other masonry products placed on the sliding table. The table includes rollers which ride inside substantially enclosed tracks on the frame. The substantially enclosed tracks prevent fluid from reaching the tracks and the rollers and prevent deposits of sludge from forming on the tracks and rollers and hampering the smooth movement of the sliding table. Also, because the rollers ride in enclosed tracks, the table is stable and does not tip relative to the tile saw. Also, the table can be easily removed from the tile saw when a locking assembly is unlocked. The base includes an integral reservoir and is hollow for increased rigidity. A blade guard pivots to a position to provide access to the saw blade, and includes an improved clamping mechanism.

Abstract: A retarding mechanism for a grinding machine which is an improvement on a prior patent application, and comprises a body and a grinding member. Wherein, the body is fixedly provided with an annular plane plate encircling an output axle thereof, the grinding member is fixedly provided with a fixing seat on the rear surface thereof, the retarding mechanism is characterized by that: the fixing seat is provided with a plurality of peripheral abrasive members which are arciform raised portions to render the abrasive members more solid and resistive to grinding and contactable with the plane plate in larger area. Therefore, during rotation of the grinding member, the abrasive members can provide a better structure to get larger friction force with the plane plate to endue the grinding member with a desired retarding effect.

Abstract: A power tool is disclosed, having an elongated motor housing in which an electric motor is received, having a gear drive housing at a first end of the motor housing to receive a gear drive for driving a working spindle, and having a handle element which is fastened rotatably at a second end of the motor housing and in which a grip switch is arranged. The handle element is rotatable with respect to the motor housing into at least four predefined angular positions that are preferably offset from one another by angles of 90°, and can be snap-locked in them.

Abstract: A sander includes a base having a platform for supporting a work piece. A casing is rotatably secured to the base at a pivot shaft and has a plate for supporting a sander member. A lock device may secure the casing and the sander member to the base at any selected angular positions. The casing has two rotatable barrels for supporting the sander member. A motor is secured to the casing and secured to one of the barrels for driving the sander member via the barrels. The barrels may be adjusted relative to each other to tighten the sander member.