Abstract: A motor driven power tool is provided having an internal dust collection system. A single electric motor drives the working member such as a saw or sander and simultaneously drives an air pump which acts as a collector vacuum for debris created when the power tool is in use. A dust collector shroud surrounds a portion of the cutting member and forms an outlet connected to the air pump inlet.

Abstract: A dust collection system for use in connection with a portable power tool is provided. The dust collection system generally includes a dust collection port having an intake that is interconnected to an air impeller by an intake duct. The impeller is driven by a motor, to create a vacuum at the intake port of the dust collection port. The outlet of the air impeller is in communication with a dust collection volume. In operation, the dust collection system is fixed to a portable power tool. Dust created during sawing or other operations is collected by the dust collection port, and is drawn away from the location at which the dust is created by a vacuum established by the air impeller at the intake port. The dust thus collected is deposited in the dust collection volume, which may include a filter bag.

Abstract: A work table includes a workpiece-supporting box having a bottom plate formed with an outlet port connected to a suctioning device, and a peripheral wall. Left and right guide plates extend inclinedly and downwardly from the peripheral wall toward the outlet port, and have opposing end walls distal from the peripheral wall. A distributor member is disposed between the end walls, and cooperates with the bottom plate to define a lower chamber in fluid communication with the outlet port, and further cooperates with the guide plates and the peripheral wall to define an upper chamber. A working panel is mounted on the peripheral wall, and is formed with apertures for access to the upper chamber.

Abstract: A lapping machine operable with a lap wheel for lapping gold jewelry and adapted to collect gold dust produced by the lapping machine, includes: (a) a base, (b) an electric motor mounted to the base, the electric motor having a rotatable output shaft extending upward and adapted to be coupled to the lap wheel which is situated above the electric motor and rotates about the axis of the output shaft, with a gold dust debris space defined as the area surrounding the lap wheel and extending from below the lap wheel downward and surrounding at least part of the output shaft, (c) a shroud comprising rear and opposite side parts that surround the rear and opposite sides of the gold dust debris space respectively, thus leaving the front of the gold dust debris space open and accessible, the shroud including a continuous front wall and a continuous rear wall spaced radially outward of the front wall, with air flow passages defined between the front and rear walls of the rear and side parts, the front walls of the side

Abstract: A device for processing a workpiece which, for this purpose, is fixed inside a working space (or enclosure) in a machining center and is processed with the aid of a tool. To remove processing residues, a gas stream is made to flow through working space, which is formed, for this purpose, like a nozzle. So as to improve further the removal of undesired processing residues from working space, without at the same time increasing the performance of the devices generating air stream, the working space is widened after the narrowest cross sectional area, in the flow direction of gas stream, similar to a Laval nozzle, machining center being situated in the region of the greatest flow speed. Because of this arrangement, in addition, an undesired limitation of working space available for machining center may be avoided.

Abstract: A grinding device comprising a motor (2) driven drive shaft (4) projecting from a housing (1). The drive shaft (4) passes through a bearing unit (5). A tool receptacle (8) is provided at a free end (7) of the drive shaft (4) for removably attaching a tool (9), in particular a grinding wheel. A suction hood (11) abuts the housing (1) and encloses the free end (7) of the drive shaft (4). The suction hood (11) comprises a suction space (12) opening in a direction facing the tool receptacle (8) side. The suction space (12) has a separator wall (13) between the tool receptacle (8) and the bearing unit (5) to prevent contamination of the bearing unit (5). The wall divides the suction space (12) into a dirty space (14) that opens facing the tool receptacle (8) and an adjacent driver space (15) that opens to the opposing side.

Abstract: A pneumatic edge trimming machine has a base a center of which having a hole. A sleeve extends upwards from the base for receiving a hollow outer casing. The outer casing has a top and a lower end; and the top and lower end of the outer casing are fixed to an inner casing through a frame. A space penetrating the inner casing and outer casing is formed. The inner casing is used to be installed with a pneumatic motor. A shaft is extended from a pneumatic motor. The shaft has a tool combining portion which exposes out of the hole at the base. The inner casing has an air inlet and a control switch. The inner casing has a vent facing toward a top of the outer casing, and the top of the outer casing being connected to a predetermined space by a tube. Therefore dust can be absorbed automatically in working.

Abstract: An electric hand power tool has a machine, an air-cooled electric motor which is accommodated in the housing, a tool which is driven by the electric motor, a handle and an auxiliary handle for a two-hand guidance of the power tool, the auxiliary handle being hollow and formed as an air channel for spent air leaving the electric motor.

Abstract: A rotary orbital sander includes a motor having a rotatable shaft with a radially off-set portion. A suction housing is mounted to the motor around the motor shaft and connectable with a vacuum source. A sanding pad assembly including a backing pad having a plurality of apertures therethrough and an annular frame having a circumferential side wall including first and second circumferential edges is mounted to the radially off-set portion of the shaft. A circular back wall extends from one of the circumferential edges and has an opening therein sealable with the suction housing. The other circumferential edge is attached to the backing pad. The sanding pad assembly resists flapping at high rotational speeds. A sanding disk having a size and shape complimentary to that of the sanding pad, and a plurality of holes aligning with the apertures in the sanding pad is mountable on the sanding pad. A vacuum source draws sanding waste through the aligned apertures and out the suction housing.

Abstract: A handle for an orbital sander (10) of the type having a dust extractor (17) containing an exhaust outlet (18), the handle having: a first part in the form of an elongate tubular member (19) having two open ends, one end being attachable to the exhaust outlet (18) to attach the handle to the sander and to allow dust to pass through the first tubular member, the other end being attachable to a dust discharge hose (22), a second part which is extendable over the top of the sander, attachment means (28) to allow the handle (33) to be attached to a pole, and, guide means (34) extending from a portion of the handle spaced from the guide means being adapted to contact the surface to be sanded and functioning to hold the handle (33) relative to the surface such that, when attached to the sander, the sander is in working alignment with the surface.

Abstract: A grinder in a tire uniformity machine having a frame including a first side frame member and a second side frame member, the frame receiving a tire having a central axis for testing, the grinder including a carriage pivotally attached to the first side frame member and a locking assembly adjacent the carriage and the second side frame member selectively coupling the carriage to the second side frame member when the carriage is in the operating position; a grinding head supported on one end of the carriage, the grinding head having at least one grinding stone and at least one motor coupled to the grinding stone capable of causing rotation thereof.

Abstract: A dry and wet cutting tile saw includes a base seat in which is a disk saw blade actuated by a motor and protected by a lateral and an upper blade guards, a water sink integrated with the base seat positioned under the disk saw blade and a working station made of metallic material pivotally and adjustably secured to the top of the base seat. The working station has a pair of sliding grooves of stepped section in upper surface for selectively and slidably disposing a circle. An inverse U-shaped ruler is also disposed on the top of the working station. It is characterized that a vacuum cleaner connects to the lateral blade guard able to suck all the dirts and chips from a working piece. So that this tile saw can either conduct a dry cutting or a wet cutting of a tile without dirt contaminating the fresh air.

Abstract: A dust collection and removal system for use in conjunction with a tire uniformity machine includes a grinding wheel shroud having a vacuum aperture therein. The vacuum aperture is connected to a vacuum source. An air nozzle is centrally mounted in the vacuum aperture. The air nozzle is connected to a source of pulsed air thereby allowing a blast of air to be directed at the tire surface during or immediately after grinding to dislodge dust particles adhered to the tire. The dislodged dust particles are then removed via the vacuum. A related method of collecting and removing dust includes mounting a vacuum hose adjacent to the grinding face, mounting an air nozzle in the center of the vacuum hose, directing a blast of air toward the tire surface via the nozzle, and removing and collecting the dislodged dust particles via the vacuum hose.

Abstract: The invention is based on a dust and chip removal device, in particular for sanding hand power tools (10), having a transport channel (12, 14), via which the dust and chips can be directed into a storage container (16) secured to the hand power tool (10) in particular, and having a dust and chip retaining device that comprises a retaining element (18, 20, 22, 24) to prevent the dust and chips from flowing back out of the storage container (16).

Abstract: A grinding power tool including a motor-driven grinding plate (2) supported in the housing (1) and having a plurality of suction openings (3) connected by a suction channel (4) provided in the housing (1) with a vacuum source (5), and at least one suction relief valve associated with the suction channel (4) for controlling pressure in the suction channel (4).

Abstract: Apparatuses and methods for planarizing a microelectronic-device substrate assembly on a planarizing pad. In one aspect of the invention, material is removed from the substrate assembly by pressing the substrate assembly against a planarizing surface of a planarizing pad and moving the substrate assembly across the planarizing surface through a planarizing zone. The method also includes replacing at least a portion of a used volume of planarizing solution on the planarizing surface with fresh planarizing solution during the planarization cycle of a single substrate assembly. The used planarizing solution can be replaced with fresh planarizing solution by actively removing the used planarizing solution from the pad with a removing unit and depositing fresh planarizing solution onto the pad in the planarizing zone.

Abstract: A universal abrasive article adapted to mount on a mounting surface of a sanding machine having a plurality of dust extraction holes that define an open area. The abrasive article includes a plurality of discrete apertures that are sized and positioned so as to expose a majority of the open area of the dust extraction holes independent of the angular orientation of the abrasive article when the abrasive article is in registration with the mounting surface. The discrete apertures may include elongated, arcuate slots that may be symmetrically positioned about a center point of the abrasive article. In one embodiment, the discrete apertures may include seven arcuate slots. These embodiments also include sufficient abrasive material to provide adequate sanding cut rate and structural integrity during use and removal.

Abstract: A sanding disk for a rotary sander includes an edge which has a plurality of spaced projectionsp. These radially extended projections, preferably in the form of a wave form, facilitate sanding interior radiused surfaces. This sanding disk can be used on a unique pad having an arcuate outer radial edge which further facilitates sanding interior radiused surfaces. The sanding disk may also have a plurality of arcuate slots which are adapted to align with radial holes in the pad of the rotary sander. The radial holes generally communicate a vacuum source.

Abstract: A vacuum system is mounted on a portable milling machine for extracting material cut by the milling drum of the machine from the surface of a roadway. The milling machine includes a frame, a propulsion system for advancing the machine across a surface to be milled, a milling drum mounted on the frame for rotation about its axis, and a conveyor for conveying material cut by the milling drum away from the drum. The vacuum system includes a vacuum pump having an air inlet and an air outlet and a nozzle mounted behind the milling drum having an opening for receiving material cut from the surface by the drum. The vacuum system also includes a material collector having an inlet, an air outlet and a material outlet. The collector is adapted for collecting material entrained in air by the pump through the collector inlet and for discharging such material through the material outlet onto the conveyor. The vacuum system also includes a first conduit and a second conduit.

Abstract: Apparatuses and methods for planarizing a microelectronic-device substrate assembly on a planarizing pad. In one aspect of the invention, material is removed from the substrate assembly by pressing the substrate assembly against a planarizing surface of a planarizing pad and moving the substrate assembly across the planarizing surface through a planarizing zone. The method also includes replacing at least a portion of a used volume of planarizing solution on the planarizing surface with fresh planarizing solution during the planarization cycle of a single substrate assembly. The used planarizing solution can be replaced with fresh planarizing solution by actively removing the used planarizing solution from the pad with a removing unit and depositing fresh planarizing solution onto the pad in the planarizing zone.

Abstract: Apparatuses and methods for planarizing a microelectronic-device substrate assembly on a planarizing pad. In one aspect of the invention, material is removed from the substrate assembly by pressing the substrate assembly against a planarizing surface of a planarizing pad and moving the substrate assembly across the planarizing surface through a planarizing zone. The method also includes replacing at least a portion of a used volume of planarizing solution on the planarizing surface with fresh planarizing solution during the planarization cycle of a single substrate assembly. The used planarizing solution can be replaced with fresh planarizing solution by actively removing the used planarizing solution from the pad with a removing unit and depositing fresh planarizing solution onto the pad in the planarizing zone.

Abstract: A bifurcated hose junction is provided for a pole mounted abrading device with vacuum assisted particulate removal. The junction is actuated by the movement of the sanding pad assembly. When a. short side of the rectangular sanding pad assembly is moved toward the tubular handle, the bifurcated hose junction is displaced laterally in relation to the linear axis of the handle. When a long side of the sanding pad assembly is moved toward the tubular handle, the bifurcated hose junction rotates in place, thereby allowing the sanding pad a comprehensive range of motion, in relation to the handle. The range of motion enables the operator to close the angle between sanding pad and the handle, and maintain planar contact between the sanding screen and the work surface, when working in constricted areas.

Abstract: In a grinding body (1) for an electric grinding tool, in particular a delta, eccentric or oscillation grinder, having a carrier plate (2), on which a granular abrasive (3) is disposed and which can be connected to a base plate of the grinding tool, a markedly higher material-removal capacity and a markedly longer service life are attained by providing that the carrier plate (2) comprises a steel band (12), in particular a stainless-steel spring band, and the granular abrasive (3) is a hard-metal granular abrasive (11).

Abstract: A rotary woodworking machine includes first, second and third rotary woodworking members, and a dust collecting mechanism. The dust collecting mechanism includes first, second, and third dust collecting units for collecting wood dust generated during a woodworking operation of the first, second and third rotary woodworking members, respectively, a dust accommodating unit for receiving the wood dust from the first, second and third dust collecting units, and a blower mechanism which is connected to and which is in fluid communication with the dust accommodating unit and which is operable so as to draw the wood dust in the dust accommodating unit out of the rotary woodworking machine.

Abstract: A powered sharpening system utilizing a turntable to rotate reversible, interchangeable platters carrying different grades of abrasive for grinding, polishing and lapping woodworking and other edge tools to be sharpened that are secured in a tool holder that contacts a reference surface on a tool rest to facilitate formation of bevels and micro-bevels at desired angles. Use of a platter of a first thickness followed by a thinner platter enables automatic formation of a micro-bevel without any adjustment in the tool holder, tool rest or sharpening technique. The turntable is rotated by an electric motor that also rotates a conventional abrasive wheel or a conventional narrow abrasive belt. The motor is mounted in a base within which a duct is located for coupling to a vacuum system for removing, through ports in the duct, abrasive and metal particles produced in grinding and sharpening. Blades on the underside of the turntable induce airflow through the base to cool the motor and other components.

Abstract: Apparatuses and methods for planarizing a microelectronic-device substrate assembly on a planarizing pad. In one aspect of the invention, material is removed from the substrate assembly by pressing the substrate assembly against a planarizing surface of a planarizing pad and moving the substrate assembly across the planarizing surface through a planarizing zone. The method also includes replacing at least a portion of a used volume of planarizing solution on the planarizing surface with fresh planarizing solution during the planarization cycle of a single substrate assembly. The used planarizing solution can be replaced with fresh planarizing solution by actively removing the used planarizing solution from the pad with a removing unit and depositing fresh planarizing solution onto the pad in the planarizing zone.

Abstract: An interchangeable handle grip assembly, conversion kit, and tools having an interchangeable handle grip are provided having an inlet extension tube and an outlet extension tube. The assembly includes a housing extension having a mounting bracket into which the inlet extension tube and the outlet extension tube are inserted. An extension grip cover fitted to cover at least a portion of the mounting bracket provides a gripping surface thereon.

Abstract: A dust collection system for use in connection with a portable power tool is provided. The dust collection system generally includes a dust collection port having an intake that is interconnected to an air impeller by an intake duct. The impeller is driven by a motor, to create a vacuum at the intake port of the dust collection port. The outlet of the air impeller is in communication with a dust collection volume. In operation, the dust collection system is fixed to a portable power tool. Dust created during sawing or other operations is collected by the dust collection port, and is drawn away from the location at which the dust is created by a vacuum established by the air impeller at the intake port. The dust thus collected is deposited in the dust collection volume, which may include a filter bag.

Abstract: Apparatuses and methods for planarizing a microelectronic-device substrate assembly on a planarizing pad. In one aspect of the invention, material is removed from the substrate assembly by pressing the substrate assembly against a planarizing surface of a planarizing pad and moving the substrate assembly across the planarizing surface through a planarizing zone. The method also includes replacing at least a portion of a used volume of planarizing solution on the planarizing surface with fresh planarizing solution during the planarization cycle of a single substrate assembly. The used planarizing solution can be replaced with fresh planarizing solution by actively removing the used planarizing solution from the pad with a removing unit and depositing fresh planarizing solution onto the pad in the planarizing zone.

Abstract: Apparatuses and methods for planarizing a microelectronic-device substrate assembly on a planarizing pad. In one aspect of the invention, material is removed from the substrate assembly by pressing the substrate assembly against a planarizing surface of a planarizing pad and moving the substrate assembly across the planarizing surface through a planarizing zone. The method also includes replacing at least a portion of a used volume of planarizing solution on the planarizing surface with fresh planarizing solution during the planarization cycle of a single substrate assembly. The used planarizing solution can be replaced with fresh planarizing solution by actively removing the used planarizing solution from the pad with a removing unit and depositing fresh planarizing solution onto the pad in the planarizing zone.

Abstract: A polishing pad made of a non-foamed resin material has surface roughness Ra in the range of 0.1-10 &mgr;m, or preferably 0.5-1.5 &mgr;m and variations in thickness less than 50 &mgr;m, or preferably less than 30 &mgr;m. Its Shore D hardness is greater than 60 degrees, or preferably 68 degrees. Its compressibility is less than 3%, or preferably less than 1% and its elasticity is greater than 30%, or preferably 50%, as measured by specified methods. Grooves may be formed over 30%-70%, or preferably 40%-60% of the total area of the polishing surface. When the polishing surface is subjected to a dressing process, its surface roughness Ra is restored to 0.1-10 &mgr;m, or preferably 0.5-1.5 &mgr;m.

Abstract: Apparatuses and methods for planarizing a microelectronic-device substrate assembly on a planarizing pad. In one aspect of the invention, material is removed from the substrate assembly by pressing the substrate assembly against a planarizing surface of a planarizing pad and moving the substrate assembly across the planarizing surface through a planarizing zone. The method also includes replacing at least a portion of a used volume of planarizing solution on the planarizing surface with fresh planarizing solution during the planarization cycle of a single substrate assembly. The used planarizing solution can be replaced with fresh planarizing solution by actively removing the used planarizing solution from the pad with a removing unit and depositing fresh planarizing solution onto the pad in the planarizing zone.

Abstract: A dust director portable vacuum guard for mounting onto a bore of a portable angle grinder. The dust director includes a housing with parallel inner and outer walls and an end web adjacent to a straight barrel that is secured along aligned edges of the walls. The barrel is slotted from a forward dust collected end to the web and is stepped at a selected distance apart from the inner wall upper edge, functioning as a baffle. An attachment ring is pivotally mounted in the housing inner wall to releasably couple to an angle grinder bore and pivot around that bore upon release of a spring loaded thumb screw. An extension cover is included on an end of the housing to allow for sawing through a corner.

Abstract: The invention relates to a treatment unit with a cutting tool (1) for treating wood, plastic or the like. Said treatment unit comprises a suction hood (6) with a ring (17) that encircles the tool (1) completely in the circumferential direction and at least partially in the axial direction. The suction hood (6) is located on the side of the drive spindle of the tool (1). A chip receiving opening (10) is provided in the tool (1) in the vicinity of the blade (4), said opening traversing the tool (1) in both the axial and the radial direction. A chip formed at the blade (4) is transported through the chip receiving opening (10) to the suction hood (6) from where the chip is removed by air suction.

Abstract: Apparatuses and methods for planarizing a mnicroelectronic-device substrate assembly on a planarizing pad. In one aspect of the invention, material is removed from the substrate assembly by pressing the substrate assembly against a planarizing surface of a planarizing pad and moving the substrate assembly across the planarizing surface through a planarizing zone. The method also includes replacing at least a portion of a used volume of planarizing solution on the planarizing surface with fresh planarizing solution during the planarization cycle of a single substrate assembly. The used planarizing solution can be replaced with fresh planarizing solution by actively removing the used planarizing solution from the pad with a removing unit and depositing fresh planarizing solution onto the pad in the planarizing zone.

Abstract: A grinder for use with a tire uniformity machine and being selectially moved into and out of contact with a tire mounted in the tire uniformity machine and including a pair of rotatable grindstones for grinding the tire carried by a grinding head. The grindstones are moved radially toward and away from the tire and are driven by one or more motors mounted on the grinding bead for rotating the grindstones in opposite directions relative to each other.

Abstract: A dust collector of a grinding device includes an inner cover and an outer cover. The outer cover encloses the inner cover and is not extending to a whole periphery of the inner cover, but a notch is formed. The outer cover has a lower edge, and when the dust collector is installed to a grinding device, the inner cover is installed between a grinding disk of a grinding device and a body of the grinding device. The inner cover and the grinding disk define a first chamber. The outer cover enclosing the inner cover and the grinding disk; defining a second chamber with the inner cover and the grinding disk.

Abstract: Apparatuses and methods for planarizing a microelectronic-device substrate assembly on a planarizing pad. In one aspect of the invention, material is removed from the substrate assembly by pressing the substrate assembly against a planarizing surface of a planarizing pad and moving the substrate assembly across the planarizing surface through a planarizing zone. The method also includes replacing at least a portion of a used volume of planarizing solution on the planarizing surface with fresh planarizing solution during the planarization cycle of a single substrate assembly. The used planarizing solution can be replaced with fresh planarizing solution by actively removing the used planarizing solution from the pad with a removing unit and depositing fresh planarizing solution onto the pad in the planarizing zone.

Abstract: A disk cleaner includes a polishing member that is rotated while it is pressed against a surface of a disk to be polished to thereby polish the surface of the disk and an air cooling apparatus that cools the disk by causing outside air to flow along the surface of the disk. The air cooling apparatus is incorporated integrally with the disk cleaner. The cooling apparatus inhibits the peeling of the adhered surfaces as well as the generation of cracks of a DVD of a two-ply structure.

Abstract: A grinding or polishing machine or device having a grinding or polishing disc for grinding or polishing a work piece for the condition of the work piece placed against the lower surface of the grinding or polishing disc. The grinding or polishing disc has a plurality of slots extending therethrough to allow visual inspection of the work piece during the grinding or polishing operation.

Abstract: A grinding device comprising a motor (2) driven drive shaft (4) projecting from a housing (1). The drive shaft (4) passes through a bearing unit (5). A tool receptacle (8) is provided at a free end (7) of the drive shaft (4) for removably attaching a tool (9), in particular a grinding wheel. A suction hood (11) abuts the housing (1) and encloses the free end (7) of the drive shaft (4). The suction hood (11) comprises a suction space (12) opening in a direction facing the tool receptacle (8) side. The suction space (12) has a separator wall (13) between the tool receptacle (8) and the bearing unit (5) to prevent contamination of the bearing unit (5). The wall divides the suction space (12) into a dirty space (14) that opens facing the tool receptacle (8) and an adjacent driver space (15) that opens to the opposing side.

Abstract: A wood machining apparatus includes a sawdust collector having a supporting wall that supports a base of a cutter carriage thereon, two upright walls extending downward from the supporting wall to define a bin-receiving space therebetween, a mounting rod extending between bottom ends of the upright walls, and a sawdust collecting bin pivoted to the mounting rod in such a manner that the bin is turnable about the mounting rod between a sawdust collecting position, in which, a top opening of the bin is confined in the bin-receiving space to receive sawdust discharged from the cutter carriage, and a sawdust removing position, in which, the top opening is exposed outwardly of the bin-receiving space to facilitate removal of the sawdust from the bin.

Abstract: A hand-held oscillating spindle sander is disclosed. The sander includes a pair of toothed pulleys associated with the output shaft. The first pulley is attached to the output shaft for rotation with the output shaft. The second pulley is rotatably disposed on the output shaft for relative rotation with respect to the output shaft. The second pulley includes opposed camming surfaces formed on the inside thereof. A cam follower is attached to and extends from the output shaft so that it is positioned between the opposed camming surfaces. A pair of belts are respectively entrained around the first and second pulleys from a jackshaft rotatably received in the housing. Upon rotation of the belts, both pulleys rotate, but at slightly different speeds. This slight difference in speeds causes the cam follower to move along the opposed camming surfaces to create an oscillation effect for the output shaft.

Abstract: A rotary orbital sander includes a motor having a rotatable shaft with a radially off-set portion. A suction housing is mounted to the motor around the motor shaft and connectable with a vacuum source. A sanding pad assembly including a backing pad having a plurality of apertures therethrough and an annular frame having a circumferential side wall including first and second circumferential edges is mounted to the radially off-set portion of the shaft. A circular back wall extends from one of the circumferential edges and has an opening therein sealable with the suction housing. The other circumferential edge is attached to the backing pad. The sanding pad assembly resists flapping at high rotational speeds. A sanding disk having a size and shape complimentary to that of the sanding pad, and a plurality of holes aligning with the apertures in the sanding pad is mountable on the sanding pad. A vacuum source draws sanding waste through the aligned apertures and out the suction housing.

Abstract: A protective cover detachably installed on a cutting machine/engraving machine combination including a main body and a protective cover. The protective cover is disposed with a fixing ring which can be directly tightened on an outer thread section of the main body. The gap of the split of the fixing ring can be changed by means of a tightening member so as to tightly engage the inner thread section of the fixing ring with the outer thread section of the main body without loosening. Therefore, the protective cover can be quickly and conveniently installed and taken off from the main body.

Abstract: Apparatuses and methods for planarizing a microelectronic-device substrate assembly on a planarizing pad. In one aspect of the invention, material is removed from the substrate assembly by pressing the substrate assembly against a planarizing surface of a planarizing pad and moving the substrate assembly across the planarizing surface through a planarizing zone. The method also includes replacing at least a portion of a used volume of planarizing solution on the planarizing surface with fresh planarizing solution during the planarization cycle of a single substrate assembly. The used planarizing solution can be replaced with fresh planarizing solution by actively removing the used planarizing solution from the pad with a removing unit and depositing fresh planarizing solution onto the pad in the planarizing zone.

Abstract: A workbench for dental prostheses is disclosed comprising: a working table leaning on a support frame; a couple of arm resting appendages projecting from the table to an operator; a drawer slidably inserted into the frame and provided with arm resting outlines; a suction unit to collect the working residues of the prosthesis, arranged between the arm resting appendages and comprising a shaped bracket protruding to the operator and provided with a through opening communicating with a suction tube. The shaped bracket is coupled to the suction tube through connecting means allowing the rotate the shaped bracket along a generally vertical axis.

Abstract: A vacuum shroud for a floor grinding machine has a rigid cover with a cylindrical skirt and a vacuum port. The skirt is concentrically disposed above the grinding wheel. A flexible cylindrical guard has a plurality of vertical ribs protruding inwardly from its upper portion against the lower outer periphery of the skirt and extends downwardly to a plane slightly above the plane of the grinding surface of the grinding wheel. The ribs and skirt define a plurality of vertical air inlet passages which communicate from outside the cover to the vacuum port. The guard bottom rim and the floor define an annular air inlet passage around the periphery of the grinding wheel which communicates from outside the guard to the vacuum port. The air flow caused by the vertical and annular air flow passages prevents dust and debris from escaping the shroud.

Abstract: An apparatus for cleaning a surface has a handle joined to a cleaning head operable to dispense liquid onto a surface to be cleaned, mechanically work up dirt, film and particulates from the surface into a vacuum unit. The cleaning head has a cylindrical core supporting a scrubber that rotates on a cylindrical member as the head moves relative to the surface to be cleaned. Nozzles located within the cleaning head discharge liquid into the core and scrubber. The scrubber has helical abrasive and porous ribbons that horizontally and laterally scrub and distribute the liquid onto the surface to be cleaned. A modification of the apparatus has nozzles located adjacent the scrubber that dispenses liquid to a surface. The scrubber when subjected to vacuum picks up the liquid and dirt from the surface.

Abstract: A power tool (10) having a dust suction device (19) integrated into its housing (12) and having an ejection fitting (20) which is connected to the dust suction device (19) and can be detachably fastened with its injection fitting (22) to a dustproof dust box (21) is particularly suitable for containing sanding dust because of a number of side walls (34) of the dust box (21) have air openings (40) and on the inside, support at least one filter element (48), in particular a folded filter, which overlaps the air openings (40).