Abstract: A grinder includes a body having an annular portion, a wheel cover which is attachable to the annular portion, and a wheel cover holding member which holds the wheel cover. The wheel cover has a cylindrical portion which is attachable to the annular portion. The wheel cover holding member has a slide member and a pressing portion which moves the slide member. The pressing portion switches a state between an engagement state in which the slide member is engaged with the cylindrical portion and a disengagement state in which the slide member is disengaged with the cylindrical portion by moving the slide member. The pressing member moves on a second line which is parallelly offset from a first line passing the center of the annular portion in a predetermined direction.

Abstract: The invention relates to a protective hood anti-rotation lock for a portable power tool (12a-e), especially an angle grinder. Said protective hood anti-rotation lock is characterized in that it comprises an anti-rotation unit (14a-e) that is adapted to take into consideration at least one operating parameter of the portable power tool (12a-e) during anti-rotational locking.

Abstract: The invention relates to a protective hood securing device for a portable power tool (12), especially an angle grinder. Said protective hood securing device comprises a protective hood unit (14), having a protective hood (16), and a securing unit (18) having at least one securing element (20) which is provided together with the protective hood unit (14) for protection in the event of a tool (22) breakage. For this purpose, the securing element (20) is at least partially configured by a protective cover (24) that is provided in addition to the protective hood (16).

Abstract: A grinding machine includes a pair of workpiece support devices (12, 13), which clamp and rotate a workpiece (W), on a bed (11). A pair of saddles (14) is provided on the bed (11) in such a way as to be movable along the rotational axis of the workpiece (W). Grindstone heads (16) provided with rotating grindstones (16c) and drive mechanisms (16d) are supported on the saddles (14) in such a way as to be movable in a direction that perpendicularly intersects the movement direction of the saddles (14).

Abstract: A hand-held power tool system has a hand-held power tool, a guard unit, and a guard anti-rotation lock unit configured to prevent rotation between the guard unit and the hand-held power tool in a case where a tool of the hand-held power tool breaks during intended operation. The guard anti-rotation lock unit also is configured to prevent rotation between the guard unit and the hand-held power tool at a same time as the guard unit is attached to the hand-held power unit, when the guard unit is in a working position. Preferably, the guard anti-rotation lock unit is at least partially located on a closing unit which includes a clamping band and a pivotable lever. The anti-rotation lock unit preferably includes an anti-rotation lock element provided on the lever.

Abstract: The invention is based on a handheld power tool, in particular a right-angle sander (10), having a gearbox (12), a flange neck (14) with a guard device (20), which device is receivable on the flange neck (14) and forms a receptacle region for a tool (18) and is rotatable in the circumferential direction (22), and having at least one detent device (24) for locking a rotary position of the guard device (20). It is proposed that the detent device (24) is at least partially integrated with the flange neck (14) of the gearbox (12).

Abstract: A protection device for a grinding wheel includes a containment structure having an operating opening for a grinding wheel, wherein the containment structure includes a fixed portion and a movable portion which can be moved with respect to the fixed portion by means of a motor and which can be blocked with respect to the first fixed portion by means of a magnetic blocking unit. The device further includes a sensor adapted to automatically detect the position of the movable portion, and a control means of the entire device.

Abstract: A power cutter comprising: a housing 2; an engine 24 mounted within the housing 2; a support arm 7 mounted on the housing and which projects forward of the housing; a blade mounting mechanism 70,90, 86, 92 rotatably mounted on the end of the support arm and which is capable of being rotationally driven by the engine 24 when the engine is running; a liquid fuel aeration mechanism 126 to generate aerated fuel for the engine; an air intake 314 for the provision of air for the liquid fuel aeration device 126; an air filtration mechanism 316 to filter the air drawn in from the air intake for the liquid fuel aeration mechanism; a fuel tank 124 for providing fuel to the liquid fuel aeration mechanism; and an exhaust 146 through which the exhaust gases generated by the operation of the engine are expelled; wherein the air filtration mechanism comprises an air filter 320 comprising a plurality of pleats which hang substantially vertically downwardly when the power cutter is in its standard orientation.

Abstract: A powerhead for a hand held power tool includes a powerhead assembly, the powerhead assembly being operably couplable to a hand held motive source, the powerhead assembly having a rotatable implement, the implement being selectively rotated by the motive source when the motive source is operably coupled to the powerhead assembly, the implement further being rotatable about an implement axis, the implement axis being disposed transverse to a powerhead assembly longitudinal axis, the implement axis intersecting the powerhead assembly longitudinal axis. A hand held power tool and a powerhead of forming a powerhead for a hand held power tool are further included.

Abstract: The invention relates to a spinner gate housing (100) comprising an outer housing (10) consisting of at least one covering element (15), at least one bottom element (16), two front wall elements (11, 12) and two trapezoidal lateral wall elements (13, 14) which are arranged at a distance from each other and encompassed b said front wall elements. At least one of the lateral wall elements (13, 14) comprises a recess for receiving a guiding sleeve. A guiding sleeve cover (40) is pressed against the lateral wall element (14) by means of at least three claw devices (50) fixed to the lateral wall element next to the recess for receiving the guiding sleeve and/or the bottom element (16) is connected to a base baring element (17) by means of a plurality of claw devices (70), said base bearing element to be fixed to a blasting compartment or a foundation.

Abstract: A dust reducing sanding system for collecting dust created during the sanding of gypsum board includes a shroud including a top wall and a peripheral wall coupled to the top wall to define an interior space. A distal edge of the peripheral wall opposite the top wall defines an open end to allow the dust to enter the interior space. A handle is mounted to the shroud and is graspable to facilitate manipulation of the shroud. A collection pipe is coupled to the peripheral wall of the shroud and is in fluid communication with the interior space. The collection pipe is engaged by a vacuum to allow the dust to be vacuumed out of the shroud. A base plate having a plurality of apertures extending therethrough is positioned over the open end of the shroud. An exterior surface of the base plate is abrasive.

Abstract: A buffing apparatus for production of a retreaded tire. The buffing apparatus can reliably prevent the scatter of buffing swarf and allows smooth transfer of the tire after the buffing operation. The buffing apparatus for production of a retreaded tire includes a grinder facing the tire and buffing its periphery, upper and lower scatter shields disposed about the grinder, spaced apart from each other in the tire radial direction, and coming in contact with the tire, and left and right scatter shields spaced apart from each other in the tire width (axial) direction and coming in contact with the tire. The left and right scatter shields are of such design as to be turnable from predetermined initial positions outward in the axial directions of the tire.

Abstract: The invention relates to a spinner gate housing (100) comprising an outer housing (10) consisting of at least one covering element (15), at least one bottom element (16), two front wall elements (11, 12) and two trapezoidal lateral wall elements (13, 14) which are arranged at a distance from each other and encompassed b said front wall elements. At least one of the lateral wall elements (13, 14) comprises a recess for receiving a guiding sleeve. A guiding sleeve cover (40) is pressed against the lateral wall element (14) by means of at least three claw devices (50) fixed to the lateral wall element next to the recess for receiving the guiding sleeve and/or the bottom element (16) is connected to a base baring element (17) by means of a plurality of claw devices (70), said base bearing element to be fixed to a blasting compartment or a foundation.

Abstract: A portable working machine is provided with a wheel guard partially covering a wheel rotated by a drive source such as an engine, and the wheel guard is retained by a retaining portion of an arm via rubber dampers serving as elastic members. Concave-convex portions are formed on the rubber dampers, a convex-concave portion corresponding to the concave-convex portions is formed in the wheel guard side, and the wheel guard is retained by the arm so that the concave-convex portions are engaged with the convex-concave portion.

Abstract: An electric handheld tool having a safety guard which is rotatably adjustably mounted thereto, and which further has a resilient latching means; a counter latching means borne by the electric handheld tool, and which cooperates with the latching means; and a stop means moveable between first and second portions and which cooperates with the latching means such that latching means, and counter latching means are either, on the one hand, held in engagement, or are released from engagement so as to permit selective movement of the safety guard.

Abstract: An adaptive dust shield for rotary grinders having a bearing housing and an axial groove around the bearing housing. The dust shield has a cover and a plurality of upstanding flexible fingers, in multiples of four, which extend upward from and around the top of the cover. These flexible fingers have a defined width and are separated apart from each other defining a space between each one of the flexible fingers. The width of the space is less than the defined width of the flexible fingers. A stretchable fitting ring fits onto the bearing housing of the grinder and into the flexible fingers. The flexible fingers are secured onto the stretchable fitting ring by a securing fastener. Tightening the securing fastener over the flexible fingers compresses them into the stretchable fitting ring and the stretchable fitting ring into the groove of the bearing housing of the grinder forming a secure attachment.

Abstract: The invention is based on a protective hood fastening device having a fastening element (12a-12n) for fastening a protective hood (14a-14n) which is intended for partly enclosing a rotating application tool on a body (16a-16n) of an electric tool (10a-10n). It is proposed that the fastening element (12a-12n) comprise at least one latching element (18a-18n) for locking the protective hood (14a-14n) against rotation relative to the body (16a-16n) of the electric tool (10a-10n).

Abstract: A spinner wheel housing (100) comprises an outer housing (10) having at least one covering element (15), at least one bottom element (16), two front wall elements (11, 12) and two trapezoidal lateral wall elements (13, 14) which are arranged at a distance from each other and encompassed by the front wall elements. At least one of the lateral wall elements (13, 14) has a recess for receiving a guiding sleeve. A guiding sleeve cover (40) is pressed against this lateral wall element (14) by means of at least three clamping claw devices (50) which are fixed to the lateral wall element next to the recess for receiving the guiding sleeve and/or a bottom support element (16). The bottom element is connected to a base support element (17) by means of a plurality of clamping claw devices (70). The base bearing element is adapted to be fixed to a blasting compartment or a foundation.

Abstract: A hand-held power tool system has a hand-held power tool, a guard unit, and a guard anti-rotation lock unit configured to prevent rotation between the guard unit and the hand-held power tool in a case where a tool of the hand-held power tool breaks during intended operation. The guard anti-rotation lock unit also is configured to prevent rotation between the guard unit and the hand-held power tool at a same time as the guard unit is attached to the hand-held power unit, when the guard unit is in a working position. Preferably, the guard anti-rotation lock unit is at least partially located on a closing unit which includes a clamping band and a pivotable lever. The anti-rotation lock unit preferably includes an anti-rotation lock element provided on the lever.

Abstract: An angle grinder for driving a cutting or grinding tool (12), includes a housing (11) having a first housing section (14) extending along a first axis (A1), and in which a motor (18) is arranged, and a second housing section (15) extending along a second axis (A2) and in which an accumulator receptacle is arranged, with the first and second axes (A1, A2) extending at an angle (?) to each other; and with a handle (20) having its first end (21) secured to the first housing section (14) and its second end (22) secured to the second housing section (15).

Abstract: The problem of controlling dust during an operation such as a micro-etching process, associated with a dental appliance in an efficient and economical manner is solved by a unit which is portable and which encloses the appliance during the micro-etching process.

Abstract: A dust-disposal assembly for a machine tool comprises a dust-collection chamber settled in a cutting area of the machine tool and a dust-block board settled on the dust-collection chamber for covering an opening of the dust-collection chamber, wherein the dust-block board serves to retain cutting dust in the dust-collection chamber.

Abstract: A brush gate accessory for a faceting machine splash pan including a mounting bracket having an arcuate cross-member interconnecting first and second attachment arms, each of the first and second attachment arms defining a clip about their free for retaining the brush gate in place over a sidewall of a splash pan, and first and second opposing brushes removably attached to the first and second attachment arms, respectively, the brushes together substantially filling a space defined between the arms from the cross-member to the free ends of the arms.

Abstract: The dental model trimmer includes a wheel having an abrasive surface, a motor for rotating the wheel, and ultraviolet light source powerful enough to inactivate bacteria. The components are located in an enclosure that has an opening to permit access to the abrasive surface of the wheel. The light source is mounted within the enclosure to illuminate a section of the abrasive surface of the wheel that is spaced from the access opening. The enclosure includes wall means interposed between the light source and the access opening for preventing direct light emitted from the UV light source from exiting the access opening. The enclosure is provided with an interlock switch that will automatically turn off the light source when the enclosure is opened. The same switch can be used to deactivate the motor and a source of water provided to the abrasive surface, if desired.

Abstract: A hand-held power tool system has a hand-held power tool, a guard unit, and a guard anti-rotation lock unit preventing rotation between the guard unit and the hand-held power tool during breakdown of a tool of the hand-held power tool and configured to prevent rotation between the guard unit and the hand-held power tool at a same time as the guard unit is being attached to the hand-held power unit when the guard unit is in a working position, the guard anti-rotation lock unit is at least partially located on a closing unit which includes a clamping band and a pivotable lever, and the anti-rotation lock unit includes at least one anti-rotation lock element provided on the lever.

Abstract: The invention provides a housing defining a chamber, within which chamber an operator can perform a procedure on an object, the housing comprising a forward edge portion which in use, is located adjacent the object; viewing means for allowing the operator to see into the chamber; at least one input port through which a tool can access the chamber; and at least one evacuation port through which any waste material produced is removed from within the chamber; such that the procedure is performed in a contained environment.

Abstract: The invention relates to a portable power tool system comprising a portable power tool (12a-n), especially an angle grinder, a protective hood unit (14a-n) and a protective hood anti-rotation lock (16a-n) for providing anti-rotational locking between the protective hood unit (14a-n) and the portable power tool (12a-n) in the event of a breakage of a tool (18a-n). According to the invention, the protective hood anti-rotation lock (16a-n) is adapted to provide anti-rotational locking between the protective hood unit (14a-n) and the portable power tool (12a-n) while at the same time securing the protective hood unit (14a-n) to the portable power tool (12a-n) in a working position of the protective hood unit (14a-n).

Abstract: A machine tool is provided. The machine tool can comprise a machine frame, at least one tool holder device which is held for movement on the machine frame, a work space in which workpieces are machinable, a work space cladding, at least one workpiece carriage which is displaceable on a path guiding device relative to the machine frame, the path guiding device being arranged alongside the work space, and at least one sliding door for access to the work space. The sliding door particularly can be arranged on the path guiding device of the at least one workpiece carriage.

Abstract: A device for abrasive machining, comprising a substantially cup shaped to rough rotatable around an axis and having an inner chamber and a disk-shaped to working element at its one axial end; and immovable holder attachable to a machine to and surrounding at least a portion of said working element at an opposite axial end at a distance therebetween so as to form a passage for passing a cooling liquid; and a helical guiding means provided in said passage so that during rotation of said tool inside said holder the cooling liquid is supplied through the substantially helical guide into said inner chamber of said tool toward said working element.

Abstract: A dust shroud for rotary tools includes a front half and a back half which are attachable together along an axis thereof to form a dust shroud. The dust shroud is mountable to a rotary power tool after mounting a mandrel in the power tool, and includes one or more openings to allow a person to lock the shaft of the tool while the dust shroud is mounted thereto to allow a person to change a worn out abrasive pad. The dust shroud is particularly suited for use with die grinders and similar rotary tools.

Abstract: A disc grinder includes a grinding wheel cover rotatably mounted to a gear housing about an axis of a spindle. A stopper device can restrict a position adjustable range of the grinding wheel cover of the spindle and includes a first stopper on the side of the grinding wheel cover and a second stopper on the side of the gear housing. The first stopper and the second stopper have stopper surfaces for contacting with each other. An impact absorbing device can absorb an impact produced when the stopper surfaces contact with each other.

Abstract: An electrical dermabrasion device (10) for exfoliating a foot includes a hollow main body (12); an abrasion unit (32, 42) connected to the main body (12), for exfoliating the foot; and a driving unit (14, 16, 18) incorporated in a hollow portion of the main body (12), for rotating the abrasion unit (32, 42).

Abstract: A universal dust shroud includes mounting brackets held above the shroud body by springs. The brackets move radially and vertically relative to the body to accommodate different angle grinders, and allow vertical movement of the shroud body relative to the grinding disk while using the grinder to allow the user greater control over the angle grinder.

Abstract: A vacuum shroud for an angle grinder includes a removable hatch for grinding in a corner and provides a storage location on the shroud for the hatch in order to encourage use of the hatch when not grinding in a corner.

Abstract: A grinding device is specified, comprising a housing in which a tool spindle for driving a tool is mounted, comprising a protective hood which can be locked on the housing, and comprising means which allow the tool spindle and the protective hood to be locked. An actuating device is provided which is displaceable on the housing between a first position in which the tool spindle is released and the protective hood is locked against rotation and a second position in which the tool spindle is locked against rotation and the protective hood can be adjusted in the angular position thereof on the housing.

Abstract: A power tool includes an air introduction device that can introduce an external air into the casing and can produce a spiral flow of the air within the casing. A motor is disposed within the casing.

Abstract: A machining apparatus has a vertical support frame defining two machining stations spaced apart in a direction, holders in the stations for rotating respective workpieces each about a respective station axis, and a transfer device for loading rough workpieces into the holders and for taking finished workpieces out of the holders. A single machining tool can be shifted in the direction between one position engaging the workpiece in one of the stations and out of engagement with the workpiece in the other of the stations and another position engaging the workpiece in the other station and out of engagement with the workpiece in the one station.

Abstract: A sharpening device for sharpening operative instrumentation having a gripping handle 4 and an acutely angled receptacle support 6, both of which form a radiated palmer contour 8, and both of which have flattened self balancing table rest 10 terminations. The hone receptacle 6 has an attached offset rectilinear container or whet-stone receptacle 12 with guard walls 16 that extend above a contained whet-stone 14. The instrument entry channel 18 is a shorter wall that allows full usage of the whet-stone surface without forcibly influencing sharpening angulations due to an excessively high wall. The offset receptacle support 6 and whet-stone receptacle 12 create two overhangs or a vertical locking rest 20 and a horizontal locking 22 rest that engage with a table. The locking rests coupled with the angled handle 4 receptacle support 6 and resultant palmer contour 8 permit two ergonomic holding positions that allow for both vertical and horizontal honing orientations.

Abstract: A multi-axes contouring machine for contouring a workpiece within a cavity of a main frame by moving a machining part along one or more axes simultaneously to the movement of the workpiece along one or more different axes. In an exemplary embodiment, the machining part simultaneously moves along an X and Y axis, while a workpiece moves along a Z axis. Here, the main frame comprises two adjacent side walls each having an opening cut out. A first carriage is attached to one of the side walls to move in the X direction, and a second carriage is attached to the first carriage to move in the Y direction. The machining part is actuated by the X and Y axes-oriented carriages. On another side wall, a carriage is attached to move in a Z direction, and the workpiece is actuated by the Z axis-oriented carriage.

Abstract: It is an object of the invention to provide an effective technique for improving the gripping characteristics in a hand-held power tool. To solve the problem, a representative power tool is provided to include a motor that drives a tool bit, a cylindrical housing that houses the motor, a motor actuating parts that actuates the motor, a cylindrical cover that is connected to one end of the housing in its longitudinal direction and houses the motor actuating parts. A grip to be held by a user of the power tool is defined by the housing and the cylindrical cover. A plurality of projections are formed on the outer surface of the grip in a circumferential direction of the grip and that each projection extends between the housing and the cover in the longitudinal direction of the power tool.

Abstract: An angle grinder is provided including a radial fan assembly. The radial fan assembly is configured to direct exhaust radially outwardly and axially away from a user of the angle grinder. Brush card assemblies for an angle grinder are also provided. The brush card assemblies provide for the securing of brush cards to a field case of the angle grinder by the interface between the field case and brush cards. Additionally, a spindle lock mechanism and a safety mechanism for an angle grinder are provided.

Abstract: A semiconductor process includes polishing a substrate with a slurry in an enclosure. Polishing the substrate is stopped. First mist is injected into the enclosure, such that the first mist has at least about 80% of saturation of a liquid or gaseous solvent in a carrier within the enclosure.

Abstract: A polishing apparatus can effectively prevent abrasive particles from falling off a polishing tape during polishing. The polishing apparatus includes: a polishing head for polishing a peripheral portion of a substrate by pressing a surface of a polishing tape, having abrasive particles fixed on the surface, against the peripheral portion of the substrate while allowing the polishing tape to travel in one direction; and a conditioning apparatus, disposed upstream of the polishing head in the traveling direction of the polishing tape, for conditioning the surface of the polishing tape in advance in order to prevent the abrasive particles from falling off the surface of the polishing tape during polishing.

Abstract: A cutting and dust collecting assembly comprises a rotatable, circular saw blade (4) having a first side (20), a second side (21), and a cover device (6) with a terminal member (52). The bottom surface (36) of the cover device extends in a plane. A longitudinal passage (45, 46) for the saw blade extends through the cover device from its top surface to its bottom surface. The terminal member comprises a terminal chamber (60) having an inlet (45a), the mouth of which coincides with the plane of said bottom surface. An outlet (58) can be connected to a vacuum source. The direction of rotation of the operating blade is such that the rear part (4a) of the saw blade which has passed beyond the bottom surface of the cover device will move in a direction upwards-rearwards towards the bottom surface. The invention also concerns the cover device, a sealing body belonging to the cover device and a working machine which is provided with the cutting and dust collecting assembly.

Abstract: A dust shroud for gas powered circular saws allows for mounting to a circular saw and for use therewith out hindering the use of the saw. The shroud does not interfere with the ability to operate the saw or set the saw on the ground, and effectively collects dust and debris without reducing the depth of cut.

Abstract: A hood assembly for woodworking equipment, the hood assembly having a main frame member, at least one secondary frame member, a hood member, and first and second mounting members. Each secondary frame member is supported relative to the main frame member. The hood member is supported by the main frame member and the at least one secondary frame member. The main frame member is supported by the first and second mounting members. The main frame member and the at least one secondary frame member support the hood member such that the hood member extends over at least a portion of the woodworking equipment.

Abstract: A power tool includes a housing accommodating a motor therein, a bearing base having a lower surface and an upper end that is connected to the housing, an output shaft that is mounted in the bearing base and protrudes out of the lower surface of the bearing base, a shield that is movably connected with the bearing base, and a locking mechanism for locking the shield relative to the bearing base. The locking mechanism further includes a locking element arranged on the shield and a stop member and the bearing base is formed with a hollow chamber within which the stop member is arranged.

Abstract: The sharpener includes a generally conical body, a base upon which the body is mounted and a hollow head mounted over the body. A shaft extends beyond the body and into the head. A cutting disk with an abrasive surface is situated within the head and fixed to the shaft. A motor situated within the body is provided for rotating the shaft. The head has an opening though which tweezers may be received such that the tweezers may be sharpened by the rotation of the cutting disk. The debris created by the sharpening process is captured within the head. The motor is energized by connection with an electrical source through series connected pushbutton switches. The switches are located remotely, preferably on opposite sides of the body, to reduce the chance of accidental energization of the motor.

Abstract: A cover device for a power tool with at least one disc-shaped working tool (6), includes first and second cover parts (12, 22) and a locking mechanism (41) for releasably pivotally positioning the second cover part (22) relative to the first cover part (12) and having a locking element (46) provided on one of the first and second cover parts (12, 22) and engageable with a counter-locking element (23) provided on another of the first and second cover parts (12, 22), and an actuation member (42) pivotally supported at a pivot point (45) on the one of the first and second cover parts (12, 22) and having an actuation section (43) and a locking section (44) extending at an angle from the actuation section (43), with the locking element (46) being provided at a free end of the locking section (44).

Abstract: The invention is based on a dust container of a portable power tool for receiving machining residues of a portable power tool (2), comprising a container (8) predetermining a receiving volume (14). It is proposed that the container (8) have a variation means (12) for varying the size of the receiving volume (14).