| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 451359000 | Rotary disk tool | 70 |
| 20080305727 | Rapid Locking Device - A rapid locking device axially secures a disc-type tool ( | 12-11-2008 |
| 20080305728 | Power tools - 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. | 12-11-2008 |
| 20090023371 | Power-Driven Hand Tool - A power-driven hand tool comprises a drive spindle adapted to drive a tool, that can be driven to oscillate about its longitudinal axis, which tool can be fixed on a retaining section of the dive spindle by a securing element, and further comprises a displacing device that serves to displace the securing element between a releasing position in which the securing element can be released from the drive spindle and a clamping position in which the securing element is clamped on the retaining section by a spring element, the securing element comprising a clamping shaft adapted to be inserted into the securing element, which is axially fixed in the drive spindle for clamping the tool in the clamping position, and which can be detached in the releasing position. For clamping of the tool a split chuck is provided which is clamped on the retaining section by the securing element in the clamped position and is connected with the retaining section in form-locking engagement. | 01-22-2009 |
| 20090023372 | HAND-HELD POWER TOOL FOR A ROTATING TOOL WITH A GUARD - The invention relates to a portable power tool ( | 01-22-2009 |
| 20090029635 | HAND-HELD POWER TOOL WITH GUARD, IN PARTICULAR AN ANGLE GRINDER - The invention relates to a portable power tool for a rotating, preferably disk-shaped tool ( | 01-29-2009 |
| 20090088052 | INLINE HANDHELD POWER TOOL - 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 | 04-02-2009 |
| 20090104862 | EXPENDABLE UNITARY QUICK MOUNT ABRASIVE DISCS AND SUPPORT PAD THEREFOR - The combination of an abrasive finishing device and a support member therefor. The support member includes a body having a threaded central opening with a flange at one end thereof. A fastening member having a threaded shaft and flange is permanently affixed to the abrasive finishing article by a resiliently deformable retainer press fitted over the threads on the shaft in such a manner that the flange on the fastening member is disposed entirely below the working surface of the abrasive finishing device. The retainer is a washer shaped member having an inner diameter which is less than the outer diameter of the threaded shaft on the fastening member and grips the thread on the shaft. | 04-23-2009 |
| 20090142998 | GRINDER WITH EASILY REPLACING GRINDING TOOL - A grinder has a main body formed with a shaft chamber and a rotary shaft rotatably mounted in the shaft chamber. One end of the rotary shaft outward protrudes from the main body for installing a grinding tool thereon. A passage and a slide way are formed in the main body. One end of the passage communicates with the shaft chamber. A front end of the slide way communicates with the passage. A chucking button is disposed in the passage. A link is movably arranged in the slide way. An activation switch is mounted on the main body for controlling the operation of the grinder. When the grinder is not activated, the chucking button can be pressed to chuck the rotary shaft for easy replacement of a grinding tool. When the activation switch is switched on to activate the grinder, the link is chucked in the chucking button to prevent the chucking button from being pressed. Accordingly, when the grinder operates, the chucking button cannot chuck the rotary shaft so as to ensure safety. When the rotary shaft is chucked by the chucking button, the activation switch cannot be switched on. | 06-04-2009 |
| 20090156105 | Hand-held power tool - A hand-held power tool for driving a grinding and cutting working tool ( | 06-18-2009 |
| 20090156106 | Hand-held power tool with locking nut - A hand-held power tool has a drive spindle ( | 06-18-2009 |
| 20090156107 | Hand-held power tool with locking nut - A hand-held power tool includes a drive spindle ( | 06-18-2009 |
| 20090181603 | Concrete polishing extension - A Concrete Polishing Extension device for treating hardened concrete surfaces and more specifically interior surfaces of countertop sinks made from decorative concrete. The extension device has features for use with grinding deep, contoured surfaces of concrete. The preferred embodiment is comprised of an extended shaft with connection features and other features; a containment cap; a means to connect cap to shaft; an external sleeve that encircles the shaft; a slip ring collar; a means to connect external sleeve to slip ring collar; a bearing such as a thrust bearing; means to connect slip ring collar to bearing; and a means of the extended shaft used to contain bearing, slip ring collar and sleeve assembly. The device has a distal end with means to removably attach to a standard driver and a proximal end with means to removably attach to engage a standard grinding head. | 07-16-2009 |
| 20090221222 | ELECTRIC GRINDING GUN - An electric grinding gun has a body, a gear reduction device, a holding cap, and an actuating device. The body has a casing, a rechargeable battery, a protective circuit board, a switch, a trigger, a motor, a cooling fin and a mounting barrel. The gear reduction device is rotatably mounted in the mounting barrel and has a seat, two planet gears and a gear ring. The seat is rotatably mounted in the mounting barrel and has a shaft hole, two gear recesses and a connecting axle. The holding cap is securely mounted around the mounting barrel to hold the gear reduction device in the mounting barrel and has an inner thread and a through hole. The actuating device is connected detachably to the seat of the gear reduction device and has a panel and an adhering layer. | 09-03-2009 |
| 20090239453 | COMPACT ELECTRIC SANDING MACHINE - The present invention particularly relates to a hand-held sanding machine with an outer housing ( | 09-24-2009 |
| 20090247059 | Apparatus for Mechanical Treatment of Surfaces - Herein is described an apparatus for the mechanical treatment of surfaces comprising a wand ( | 10-01-2009 |
| 20090280731 | Electric Portable Grinder With Air Cooling System - A portable electric grinder with an air cooling system and connected to a remote stationary voltage supply means ( | 11-12-2009 |
| 20090280732 | Machine tool, in particular hand-held power tool - The invention relates to a machine tool, particularly a hand machine tool, which comprises a driving motor and an air guide element, which is disposed in the housing of the machine tool and conducts an air current passing over the driving motor to the outside. The air guide element comprises a functional section, which forms a part of the outer lateral surface of the machine tool. | 11-12-2009 |
| 20090311953 | POWER TOOL, IN PARTICULAR HANDHELD POWER TOOL - A power tool includes a guard hood to be fixed on a tightening neck via a securing device thereof. The securing device has a securing part, which is to be tightened via an actuation element, and a detent component which is adjustable between a detent or locked position and a nondetent or unlocked position. The actuation element acts upon both the securing part and the detent component. | 12-17-2009 |
| 20100075581 | Extended utility tool - The utility of the present invention is comprised of an elongated tubular member with a motor end at one end and a working end with a working disc mounted thereon at the opposing end. The motor end includes a motor that is connected to the working end by means of a shaft. A working disc is mountable on the working end in a way that the working surface is rotated when the motor is energized. | 03-25-2010 |
| 20100087127 | Accumulator driven angle grinder - An angle grinder for driving a cutting or grinding tool ( | 04-08-2010 |
| 20100105300 | GUARD HOOD TORSION PREVENTER - The invention is based on a guard hood torsion preventer for a handheld power tool, in particular for a right-angle power sander. The invention is for preventing torsion of a guard hood on the handheld power tool, in particular in the event of damage to a tool. The guard hood torsion preventer includes at least one torsion-prevention unit which has a longitudinal axis, about which the torsion-prevention unit is rotatably supported. | 04-29-2010 |
| 20100105301 | INLINE HANDHELD POWER TOOL - 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. | 04-29-2010 |
| 20100120341 | PORTABLE GRINDER - The invention relates to a portable grinder comprising a grinding head ( | 05-13-2010 |
| 20100120342 | METHOD, SYSTEM, AND APPARATUS FOR MODIFYING SURFACES - The present disclosure is directed to method, apparatus, and system for uniformly supporting flexible surface modifying articles during surface modification as well as enabling replacing and repositioning thereof for improving their useful service life as well as improving dust and debris control management. | 05-13-2010 |
| 20100151776 | Polishing body and device for removing stain - A polishing body for removing stains is provided. The polishing body includes a fiber material or a fabric and a concave is formed in the polishing body to achieve the effects of slowly releasing polishing agent and effort-saving. | 06-17-2010 |
| 20100178857 | HANDHELD POWER TOOL - The invention is based on a handheld power tool, in particular a right-angle sander ( | 07-15-2010 |
| 20100248599 | GUARD FOR AN ELECTRIC MACHINE TOOL, ELECTRIC MACHINE TOOL, AND SYSTEM COMPRISING A GUARD AND ELECTRIC MACHINE TOOL - A guard for a power tool with a rotatably driven insertion tool ( | 09-30-2010 |
| 20100323593 | DUST-PROTECTED HAND-HELD POWER TOOL - A battery-operated hand-held power tool ( | 12-23-2010 |
| 20110003541 | SANDER - It is an object of the invention to improve usability of a movable handle, in a sander having the movable handle. | 01-06-2011 |
| 20110045749 | Multi-Layer Surface Treatment Pad For Motorized Device - A multi-layer surface treating pad is disclosed. It has an upper layer suitable to serve as one part of a hook/loop type fastener system, a bottom layer which comprises an abrasive or polishing material, and a cleaning or other surface treating formulation positioned between the upper and bottom layer in the form of a bump which is positioned mostly in a central region of the pad. The bump of the formulation causes the upper layer to bulge upwardly so as to provide a visual indication as to where one optimally should attach a motorized device thereto. | 02-24-2011 |
| 20110045750 | ROUGH GRINDING TOOL - A rough grinding tool has a support plate with a centre opening arranged concentrically with respect to a centre longitudinal axis for receiving a drive shaft of a drive machine. Supported on the support plate is a fiber grinding disc, which is formed from a fiber disc being used as a carrier and a resin-bound grinding means covering. The fiber grinding disc is glued to the support plate. | 02-24-2011 |
| 20110081846 | INTERNAL ROTATION TYPE DIRECT MOTOR-DRIVE PORTABLE ANGLE GRINDER - The present invention relates to an internal rotation type direct motor-drive portable angle grinder. By means of the direct drive, the present invention prevents the emission of noise made by angle type transmission devices; and/or an inertial body is installed on the motor rotating part to form a flywheel to improve the grinding, polishing and machining or cutting abilities of the grinding wheel; and/or a motor is established to be open or semi-hermetic for the space from the interior to a housing and/or a handle of the motor to improve the effect of heat dissipation outward. | 04-07-2011 |
| 20110081847 | MOTOR PARALLEL TRANSMISSION PORTABLE ANGLE GRINDER - The present invention relates to a motor parallel transmission portable angle grinder with a motor rotating part spindle parallel installed in a position adjacent to a grinding wheel spindle to form a parallel transmission device driving the grinding wheel. By means of the parallel transmission device, the present invention prevents the emission of noise made by angle type transmission devices; and/or an inertial body is installed on the motor rotating part to form a flywheel to improve the grinding, polishing and machining or cutting abilities of the grinding wheel; and/or a motor is established to be open or semi-hermetic for the space from the interior to a housing and/or a handle of the motor to improve the effect of heat dissipation outward. | 04-07-2011 |
| 20110086583 | POWER TOOL, PARTICULARLY A HAND-HELD POWER TOOL - The invention relates to a power tool, comprising a protective guard, and a clamping band to be positioned about a clamping collar for attaching a protective guard to the clamping collar of the power tool. The clamping band is tensioned by a fastening device associated with the protective guard by way of a screw. A section of the clamping band is designed as a pivoting section, which is held at an adjoining section of the clamping band in an articulating manner. | 04-14-2011 |
| 20110171887 | Power Tool - An electric power tool includes a housing, a brushless motor, an output shaft, and a motor driver circuit. The housing defines an axial direction. The brushless motor is accommodated in the housing and having a drive shaft. The output shaft extends in a direction generally perpendicular to the drive shaft. The motor driver circuit is accommodated in the housing for driving the brushless motor. The housing has a cylindrical shape and has a part functioning as a grip portion. | 07-14-2011 |
| 20110183587 | CEILING GRINDER - A ceiling grinder comprising a drive unit, a grinding wheel, which can be set in rotation by means of the drive unit, a grinding head housing, which receives the grinding wheel and has an opening allowing the grinding wheel access to the surface to be ground and a holding element for holding the grinder. The ceiling grinder also has means for producing a negative pressure within the grinding head housing, by which the ceiling grinder is held on the surface to be ground, wherein the means for producing the negative pressure comprise lamellar elements, which rotate about the axis of the grinding wheel during the grinding operation of the ceiling grinder and thereby cause within the grinding head housing an air flow that induces a static negative pressure. | 07-28-2011 |
| 20110195643 | POWER TOOL WITH A SHIELD - 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. | 08-11-2011 |
| 20110230125 | INSTALLATION/UNINSTALLATION STRUCTURE FOR TOOLING DISK OF A GRINDING TOOL - An installation/uninstallation structure for tooling disk of a grinding tool includes a rotary shaft mounted in the grinding tool and a securing assembly including a securing seat, a shift plate and a securing member. The securing member is movably mounted in the securing seat. The shift plate is pivotally disposed on the securing seat for driving the securing member. In use, the securing assembly is fitted around a rear end of the rotary shaft, when the shift plate is shifted to a locking position, the securing member is latched with the rotary shaft to secure the securing assembly to the rotary shaft for fixing the tooling disk. When the shift plate is shifted to an unlocking position, the securing member is unlatched from the rotary shaft, permitting a user to detach the securing assembly from the rotary shaft for taking off the tooling disk without using any tool. | 09-22-2011 |
| 20110281508 | ATTACHMENT MECHANISM FOR A CUTTING DISC - Disclosed herein is a power tool ( | 11-17-2011 |
| 20120071066 | CORDLESS CONCRETE FINISHING TOOL - A concrete finishing tool includes a body having a chassis, a guard, and frame supports. An extension handle is attached to the body, and a motor is attached to the body and operatively connected to a driving gear and driven gear to rotate blades having a quick change coupling mechanism. An integrated handle is configured on the body and houses a switch for the motor that is powered by a power supply. | 03-22-2012 |
| 20120129436 | POWER TOOL - An improved hand-held power tool is provided which can effectively reduce whirling vibration caused by imbalance of a rotating element. The power tool has a grip that is connected to a tool body and designed to be held by a user and a self-synchronous mechanism that reduces whirling vibration caused in the tool body or the grip when the tool bit is driven. The self-synchronous mechanism is of a phase variable type, having a rotating body which serves as a vibrator and is rotationally driven by a driving source different from a driving source for the tool bit. The self-synchronous mechanism is disposed in the tool body or the grip in which whirling vibration is caused, and arranged such that a phase of vibration of the rotating body is automatically tuned to a phase of the whirling vibration, thereby reducing the whirling vibration. | 05-24-2012 |
| 20120184188 | DISC SANDER - A disc sander includes a housing having an operation platform for holding a workpiece on a work surface at the operation platform for sanding, a sanding mechanism pivotally mounted on the housing and having a sanding surface for sanding the workpiece, and an angle adjustment unit set between the housing and the sanding mechanism and including two swing plates disposed at two opposite lateral sides relative to the housing and respectively connected to the sanding mechanism so that the sanding mechanism is biasable with the swing plates relative to the housing to change the angle between the work surface and the sanding surface. | 07-19-2012 |
| 20120244788 | POWER TOOL - In a grinder, a spindle protruding from a main body including a brake device is provided with an inner member. The inner member contacts a pressing portion provided integrally with the spindle and is pressed toward a tip end of the spindle when the spindle is braked by the brake device. A nut member can be screwed on the tip end of the spindle so that a disc-like tool though which the spindle extends perpendicularly can be held between the inner member and the nut member. The inner member comprises a locking member that contacts the pressing portion and is pressed toward the disc-like tool when the brake device is operated, and an inner flange which is detachably attached to the locking member so as to be rotatable together with the locking member. | 09-27-2012 |
| 20130090045 | CLAMP NUT - A flange nut for use in mounting a power tool component onto a rotatable spindle of a power tool. The flange nut includes one or more non-circular apertures into which an end of a shaped tool such as an Allen wrench may be inserted. Torquing or otherwise applying a force to a portion of the shaped tool serves to thread the nut along the spindle either towards the power tool component to secure the power tool component on the spindle or away from the power tool component to allow for removal of the power tool component. | 04-11-2013 |
| 20130137347 | MACHINE TOOL PROVIDING A LARGE GRINDING AREA - A machine tool providing a large grinding area includes a tool body, a rotary bracket driven by the tool body and a plurality of grinding portions coupled to the rotary bracket. The tool body includes a driving motor and a spindle driven by the driving motor to spin axially. The rotary bracket is coupled to and driven by the spindle to rotate and includes a plurality of connecting portions equally spaced from each other on the circumference formed by rotation of the rotary bracket. The grinding portions are coupled with the connecting portions and have grinding zones at the same horizontal level and are driven by the rotary bracket to rotate synchronously therewith to jointly form a grinding plane. Thereby a larger grinding area can be achieved through smaller grinding discs. | 05-30-2013 |
| 20140004778 | Handheld Pneumatic Grinder with Adjustable Wheel Guard Structure | 01-02-2014 |
| 20140038499 | COMPACT ELECTRIC GRINDING MACHINE - The present invention particularly relates to a hand-held sanding machine with an outer housing ( | 02-06-2014 |
| 20140057538 | PROTECTIVE HOOD DEVICE - A protective hood device includes at least one basic body, at least one fastening unit, and at least one protective-hood-device anti-rotation unit. The at least one fastening device is configured, at least partially, to fasten the basic body relative to a hand power tool, in particular by force closure. The at least one protective-hood-device anti-rotation unit has at least one stop element, which is configured, at least partially, in at least one operating state of a hand power tool, to lock the basic body against rotation relative to the hand power tool, in particular by form closure. The at least one stop element is at least partially integral with the fastening unit. | 02-27-2014 |
| 20140080390 | Counter-rotating polisher - A counter-rotating polisher includes: an enclosure, an electric motor, a polishing arrangement and a counter-rotating arrangement. The electric motor is fixed to the enclosure and includes a driving axle. The polishing arrangement includes two polishing device. The polishing devices respectively include a fixed tray and a polishing material that are fixedly connected to an outside of the fixed tray. The fixed tray is perpendicular to the driving axle. The counter-rotating arrangement includes a first driving wheel, a second driving wheel and a change-direction wheel. The first driving wheel is connected to the driving axle and driven by the driving axle. The second driving wheel is fixedly connected to the second fixed tray. The change-direction wheel is connected to the first driving wheel and the second driving wheel. The driving axle rotates the first polishing material positively. The change-direction wheel reversely transmits the rotation to the second driving wheel. | 03-20-2014 |
| 20140349556 | WORKING TOOL - A working tool includes a housing ( | 11-27-2014 |
| 20140370791 | Hand-Held Power Tool with an Electromotive Drive and at least a First Housing Part - A hand-held power tool comprises an electromotive drive that is configured to drive an output shaft and that is positioned in a first housing part, wherein the electromotive drive and the output shaft define a common first axis. The hand-held power tool further comprises an electronic system that is configured to energize the electromotive drive and that is positioned in a second housing part. The second housing part is elongated and includes a grip that is distal from the electromotive drive. The second housing part defines a second axis that is at an angle to the first axis between 60° and 120°. | 12-18-2014 |
| 20140370792 | POWER TOOL - A power tool, especially an angle grinder, includes at least one grip housing, at least one switching unit that has at least one latch element arranged on the grip housing, and at least one bearing unit configured to mount the latch element such that it is mobile at least with respect to the grip housing. When the latch element is actuated, the bearing unit is configured to guarantee a stroke movement of the latch element along a trajectory of a value greater zero, starting from an end of the latch element closer to the connecting region of the grip housing in the direction of an end of the latch element away from the connecting region, which end is configured to be gripped. | 12-18-2014 |
| 20140370793 | PROTECTIVE HOOD ROTATION PREVENTION DEVICE - A protective hood rotation prevention device for a power tool, in particular an angle grinder, includes a clamping unit that is configured to clamp a protective hood unit. The clamping unit includes at least one clamping element with a rotation prevention unit that has a rotation prevention element. The device further includes a movement coupling unit that is configured to move the rotation prevention element in at least one operating state depending on a movement of the clamping element. The device also includes a securing unit that is configured, in at least one operating state, to secure the rotation prevention element, in the event of a movement of the clamping element in a loosening direction of the clamping element, at least as far as possible counter to a movement in an uncoupling direction of the rotation prevention element out of a rotation prevention position of the rotation prevention element. | 12-18-2014 |
| 20150038064 | Hand-guided power tool - A hand-guided power tool has a support arm and a tool member supported on the support arm. A drive motor is provided and a drive belt is rotatably driven by the drive motor and drives in turn the tool member. The support arm has a belt chamber in which the drive belt is arranged. The belt chamber is closed off relative to the environment and sealed off relative to the environment. | 02-05-2015 |
| 20150056897 | SANDER PROVIDING AIRFLOW CORRECTION - A sander capable of correcting airflow amount comprises a body and a correction valve. The body includes an air intake passage to receive pressurized air, a drive motor driven by the pressurized air to rotate at a rotational speed including a preset range and an excessive range, and a regulation valve located on the air intake passage to adjust the rotational speed of the drive motor in the preset range. The correction valve includes an adjustment portion operable in an adjustment displacement and a mask wall movable by the adjustment portion to block the air intake passage. The adjustment portion determines the flow amount of the pressurized air passing through the correction valve according to the adjustment displacement thereof to confine the rotational speed of the drive motor from the excessive range to the preset range, thereby controls the rotational speed of the drive motor in the preset range. | 02-26-2015 |
| 20150065018 | Grinders with Friction Drives - In one illustrative embodiment, a grinder may comprise an arbor configured to rotate about a first axis and to support a grinding wheel for rotation therewith, a gear surrounding a first portion of the arbor and having a slip fit with the first portion of arbor, a motor configured to drive rotation of a drive train including the gear, a collar surrounding a second portion of the arbor and having an interference fit with the second portion of the arbor such that the collar is constrained for rotation with the arbor about the first axis, and at least one spring disposed between the gear and the collar and configured to exert a biasing force along the first axis such that one or more resulting friction forces cause the arbor to rotate with the gear when a torque exerted on the gear is less than a threshold torque. | 03-05-2015 |
| 20150072600 | SELF-LEVELING SANDPAPER GRINDING MACHINE - The invention discloses a self-leveling sandpaper grinding machine, comprising a base part including a seat, a motor frame fixed to the seat, a motor supported on the motor frame, a decelerator connected to an output shaft of the motor, in which an output shaft of the decelerator penetrates the seat and extends to the other side of the seat; and a grinder part attached to the seat and opposing to the motor, which includes a tray, four barrier strips provided on the tray and forming a quadrangle, U-shaped clip seats provided along diagonals of the quadrangle, elastic pads inserted into sockets formed by the barrier strips and clip seats, sandpaper placed on the elastic pads, U-shaped clips for engaging with the clip seats and fastening the sandpaper together with the clip seats, and a transmission mechanism provided on the tray and for coupling with the output shaft of decelerator. | 03-12-2015 |
| 20150087211 | Machine Tool Braking Device - A machine tool braking device, particularly a hand-held machine tool braking device, includes at least one braking unit and at least one control unit. The control unit includes a moveably-mounted control element that is configured to activate and/or deactivate the braking unit. The control element has a movement axis and is mounted such that the control element can pivot about the movement axis. | 03-26-2015 |
| 20150111480 | HANDHELD GRINDER WITH A BRUSHLESS ELECTRIC MOTOR - A handheld grinder comprising a housing; a grinding disk; a motor; an output shaft connected to the grinding disk and the motor to impart rotary motion thereto; and a circuit board residing in the housing and having thereon a rectifier that receives an alternating current and converts the alternating current to a direct current, a switching arrangement having a plurality of motor switches connected electrically between the rectifier and the motor and operates to deliver the direct current from the rectifier to the motor, a capacitor connected electrically between the rectifier and the switching arrangement, wherein the capacitor is coupled in parallel across the rectifier, a driver circuit interfaced with the motor switches and operable to control switching operation of the motor switches, and a power switch connected electrically between the rectifier and the driver circuit and operable to selectively energize the driver circuit and power on the grinder disk. | 04-23-2015 |
| 20150328573 | Filter assembly attachment to an angle grinder - The invention relates to a filter assembly ( | 11-19-2015 |
| 20150328742 | Hand-Held Power Tool having an Electronically Commutated Electric Motor and an Integrated Electronics System - A hand-held power tool, in particular an angle grinder, having a drive unit, has an electronically commutated electric motor and has an electronics system which is integrated in an appliance housing. The ratio of a weight of the hand-held power tool M | 11-19-2015 |
| 20150328763 | ELECTRIC TOOL - An electric tool, such as an angle driver, has a main tool body with a front portion and a rear portion positioned opposite to the front portion. The main tool body houses a motor configured to receive electricity to function as a drive source. A gear head is coupled with the front portion of the main tool body wherein the gear head has a spindle in communication with a motor axis of the motor via mesh-engagement of bevel gears associated with the motor axis. The spindle has with a cutter tool accessory attached thereto such that rotation of the motor axis produces a commensurate rotation of the cutter tool accessory. Battery attachment portions are associated with the rear portion of the main tool body and are configured to receive a corresponding set of batteries that provide electricity to power the motor. | 11-19-2015 |
| 20150336238 | PARTICLE SEPERATION ASSEMBLY FOR POWER TOOL - A power tool is provided including a having a field case portion and a gear case portion, a motor disposed in the field case portion of the housing, a gear set disposed in the gear case portion of the housing and operatively connected to the motor via a motor spindle, a fan rotatably connected to the motor, a plurality of intake conduits disposed along the housing, and a particle separation assembly in fluid communication with the plurality of intake conduits. The particle separation assembly includes a baffle and a centrifugal chamber, where the baffle is operable to direct airflow from the intake conduits into the centrifugal chamber in a cyclonic path, and the centrifugal chamber includes a radial gap forming a particle dispersion port in the cyclonic path of the airflow to eject contamination from the airflow. Additionally or alternatively, the centrifugal chamber includes a plurality of air-directing fins arranged angularly to direct contamination from the airflow towards the particle dispersion port. | 11-26-2015 |
| 20150367495 | POWER TOOL - For providing a power tool capable of significantly reducing the transmission of vibrations to the housing | 12-24-2015 |
| 20160016285 | ADJUSTABLE GUARD FOR POWER TOOL - A power tool includes an output shaft defining a rotational axis and a housing from which the output shaft protrudes. The power tool further includes a flange at least partially surrounding the output shaft, a circumferential groove defined between the housing and the flange, and a radially inward-extending slot in the flange. The power tool also includes a rotatable guard having a first radially inward-extending projection and a plurality of apertures positioned radially about the rotational axis. The first radially inward-extending projection is receivable through the radially inward-extending slot in the flange and positioned within the groove. Furthermore, the power tool includes a lever having a detent member, and a biasing member for biasing the lever toward the rotatable guard. The detent member is receivable in one of the plurality of apertures to rotationally lock the rotatable guard relative to the housing. | 01-21-2016 |
| 20160036089 | Heavy-Duty Hand-Held Power Tool - A heavy-duty hand-held power tool appliance includes at least one electric motor configured to drive a working tool and an energy storage unit configured to supply electricity to the at least one electric motor. | 02-04-2016 |
| 20160052102 | PAD FOR SUPPORTING ABRASIVE DISC - A pad for supporting an abrasive disc by being fixed with the abrasive disc to a shaft of a grinder, the pad including a supporting surface opposing the abrasive disc. In a radial direction, an outer edge of the supporting surface is located inward of an outer edge of the abrasive disc. The supporting surface includes a taper portion inclined away from the abrasive disc as it approaches the outer edge of the supporting surface. The abrasive disc is not fixed to the taper portion. | 02-25-2016 |
| 20160184973 | TOOL HOLDER AND HANDHELD ABRADING MACHINE - In order to provide a tool holder for holding a tool for treating the surface of a workpiece by means of which it is possible to treat workpieces in a low-vibratory and convenient manner, it is proposed that the tool holder comprise a disk-shaped base body which has an attachment section for the attachment of the tool holder to a machine tool and at least one resiliently flexible deformation section. | 06-30-2016 |
| 20160193713 | GRINDER | 07-07-2016 |
| 20190143486 | LONG-LIFE ABRASIVE PAD ASSEMBLY | 05-16-2019 |
