Abstract: An attachment for a portable power tool, in particular a screwdriver machine or drilling machine, wherein the attachment has a drive part with a drive element and an output part with an output element for driving a work tool, wherein the drive element is able to be coupled to a machine output element of the portable power tool in order to drive the attachment and is connected or coupled to the output element via a transmission for driving the output element, and wherein the drive part has, on a drive side, a fastening device for releasably fastening the attachment to the portable power tool for conjoint rotation with respect to an angle positioning axis. Provision is made for the output part to be rotatable about the angle positioning axis relative to the drive part into at least two mutually different angle positions.

Abstract: A hand-held knockout punch driver includes a housing, a motor positioned within the housing, a head unit removably coupled to the housing, the head unit including a body, an input member movable relative to the body, and a draw rod to which at least one of a punch or a die is attachable. The draw rod is configured to move axially relative to the body in response to movement of the input member relative to the body. A quick-release mechanism removably couples the body to the housing and includes radially inward-extending locking members on one of the housing or the head unit and a plurality of radially outward-extending locking members on the other of the housing or the head unit engageable with the radially inward-extending locking members to lock the head unit to the housing.

Abstract: A power sweeper has a handle having a first end graspable by a user and a second end, a drive shaft extending along the handle, and a power head coupled to the handle to rotate the drive shaft. A gear box is coupled to the drive shaft adjacent the second end, and a brush is coupled to the gear box for rotation in response to rotation of the drive shaft. The power sweeper includes an axle, and first and second wheels coupled to the axle. A shield is coupled to the gear box and defines an aperture through which the handle extends. The axle is moveable with respect to the shield and the brush to adjust an angle between the handle and the ground surface.

Abstract: A machining device is adapted to be provided on a mount provided with a toolholder. The toolholder is controllable to rotate and is adapted to be engaged with a tool. A primary coil engaged with the toolholder includes a first ferrite core and a first coil assembly detachably engaged with the first ferrite core. The first coil assembly is modular molded, and is adhered to be an annular body having a first hollow portion. A piezoelectric actuator is electrically connected to the primary coil to drive the tool to vibrate. The secondary coil includes a second ferrite core and a second coil assembly detachably engaged with the second ferrite core. The second coil assembly is modular molded to be an annular body having a second hollow portion.

Abstract: An oscillating power tool with an electric motor is provided, including an armature shaft with an armature and a fan wheel, including an eccentric arranged on the armature shaft at one end thereof, a first balancing mass for balancing an unbalance of the eccentric and possibly an eccentric bearing, being arranged in the proximity of the eccentric or the eccentric bearing, respectively, however, at an axial distance, further including a second balancing mass for balancing a couple unbalance caused by the axial distance between the eccentric and the eccentric bearing, respectively, and the first balancing weight, wherein the second balancing mass is arranged on the armature shaft at the side facing away from the eccentric or the eccentric bearing. Also a method for balancing such an electric motor is provided.

Abstract: A gyratory crusher shell has an annular wall extending around a longitudinal axis. A plurality of ears project radially outward from an annular rim of the topshell with each ear including a respective lug to sit within a corresponding recess at an annular rim of the topshell to rotatably lock the crushing shell at the topshell.

Abstract: A hand-power tool includes at least one tool spindle and a drive unit configured to drive the tool spindle at a rotational speed greater than 10,000 min?1. The drive unit has a brushless electric motor.

Abstract: A hand-held machine tool device, in particular, for a screwdriver (12a-h), having a locking device (14a-h) for locking a power take-off unit (16a-h), and having a rotational bearing device (18a-h) of the power take-off unit (16a-h). It is provided that at least part of the locking device (14a-h) and the rotational bearing device (18a-h) be formed in one piece.

Abstract: It is an object to provide a novel technique for releasing an intervening member of a driving member. A representative screwdriver is provided with a motor and a driving mechanism. The driving mechanism has a spindle, a lock sleeve, rollers, a driving gear, a retainer and a spring receiver. When driven with the rollers held between the lock sleeve and the driving gear, the spindle is rotated in a normal direction. The lock sleeve has an inclined part and the retainer has an inclined part. The lock sleeve and the retainer move with respect to each other in the axial direction and the circumferential direction by sliding contact between the inclined parts. This relative movement in the circumferential direction is utilized to release the holding of the rollers.

Abstract: A drilling apparatus including a rotary cutting tool having a proximal end and a distal end and further defining a rotary axis generally extending between the proximal and distal ends. The rotary cutting tool includes a proximally directed face located between the proximal and distal ends that face mainly in a proximal direction. The rotary cutting tool also includes an angled mounting face that extends between the proximally directed face and the proximal end. The angled mounting face is angled relative to the proximally directed face and the rotary axis where one of a mounting aperture and a mounting protrusion are provided at the proximally directed face. The one of the mounting aperture and the mounting protrusion have a mounting depth that extends generally in the direction of the rotary axis. The distal end includes a feature that is configured for at least one of cutting and grinding.

Abstract: A hand-power tool, in particular a drill and/or chiseling hammer, includes a transmission, a machine housing, and an inner housing arranged within the machine housing. The inner housing is provided for at least partially receiving at least one transmission element of the transmission. The at least one transmission element is supported jointly by the inner housing and by the machine housing.

Abstract: A driver for medical wires has a hollow drive shaft, rotatable about a rotation axis. The hollow drive shaft has a distal end and a proximal end. Furthermore, a plurality of clamping jaws penetrates under an angle into the hollow drive shaft close to its distal end. The clamping jaws are moved into or out of the hollow drive shaft by means of a jaw guide mounted slidable parallel to the rotation axis and movably connected to the clamping jaws. An actuator is provided to shift the jaw guide parallel to the rotation axis and therefore modify the penetration depth of the clamping jaws.

Abstract: An oscillating power tool includes a drive motor producing rotary motion and an actuator for converting the motor rotary motion to an oscillatory side-to-side movement. The power tool includes a tool mount operably driven by the actuator and configured to support the tool so that the working end is substantially collinear and/or coplanar with the axis of the motor drive shaft.

Abstract: Problem to be solved: to provide an extendible working machine which is lightweight and which has a rod section capable of being extended longer. Solution: an extendible working machine is provided with a rotation/drive section, a working section, and a rod section which connects the rotation/drive section and the working section, transmits rotational force to the working section, and can be extended and retracted. The rod section is provided with a tube body which can be extended and retracted, and also with a shaft body which extends in the axial direction within the tube body and which can be extended and retracted together with the tube body. The tube body is provided, with an outer tube and with an inner tube which can move within the outer tube. The shaft body is provided with a drive shaft which is supported within the outer tube by bearings in a rotatable manner, and also with a pipe shaft which is supported within the inner tube in a rotatable manner.

Abstract: A portable power tool includes a drive motor configured to generate torque, a transmission including a plurality of transmission gears positioned in a housing and configured to transmit torque generated by the drive motor to a drive shaft, a first adjusting element positioned on the housing, and a first sensor configured to detect a position of the first adjusting element. The first adjusting element is configured to set at least one of the torque and a transmission gear of the plurality of transmission gears. The first sensor is configured to transmit a first signal corresponding to the position of the first adjusting element to an electronic control element.

Abstract: A guide member for an oscillating power tool includes an attachment portion configured to be removably attached to a housing of the power tool and a guide portion that extends from the attachment portion. The guide portion includes a leading edge, a trailing edge, and a guide surface. When the attachment portion is attached to the housing of the power tool, the guide portion is configured to extend beyond the housing in a first direction to position the leading edge portion a predetermined distance apart from the oscillation axis, the predetermined distance being greater than a distance that an accessory tool attached to the power tool extends.

Abstract: The invention is based on a hand-held power tool device equipped with a locking device. The locking device is provided for locking an output device and has at least one locking element for supporting at least one radial clamping force. According to a proposed embodiment, the locking element is provided to fasten and/or axially secure at least one component.

Abstract: An insulation system for a tool includes a first element configured to electrically insulate an output unit of the tool from a detachably receivable tool element of the tool that is configured to process a workpiece. The insulation system further includes and a second element configured to electrically insulate the output unit toward the outside. A method includes mounting the insulation system on the tool.

Abstract: A rotary tool for driving drill bits or screw bits. The rotary tool includes a main body, a main shaft, a chuck, and a locking assembly for locking the chuck at a fixed position relative to the main shaft in the axial direction. The locking assembly is arranged fixedly relative to the main body in the circumferential direction of the main shaft and it has a portion that contacted with the chuck when locking the chuck.

Abstract: A portable power wrench is controlled by an operation control unit and comprises a housing (10;50) with a rotation motor, a gear casing (15;55) including a gearing (18;56,57) and a drive spindle (19;60} and being releasably and/or rotatably connected to the housing via a swivel or multi-position connection, an operation parameter sensing device (22,23;68) is associated with the drive spindle (19,60). The sensing device (22,23;68) communicates with the operation control unit via a first signal transferring device (28;82) which is disposed between the drive spindle (19;60) and the gear casing (15;55), and a second signal transferring device (31;84) is disposed between the gear casing (15;55) and the housing (10;50), wherein the second signal transferring device (31;84) communicates with the operation control unit. At least the first signal transferring device (28;82) between the drive spindle (19;60) and the gear casing (15;55) comprises a contact free transfer device.

Abstract: The invention relates to a power tool with a quick-operated locking mechanism. The power tool comprises a housing, an output shaft configured to mount and drive a working head and provided with a carrier extending out of the housing, a fixer configured to fix the working head at the carrier of the output shaft, a locking mechanism configured to lock or release the fixer and a driving mechanism configured to move the locking mechanism between a locking position and a releasing position, while in the locking position, the fixer is clamped fixedly on the output shaft, and while in the releasing position, the fixer is released from the output shaft. The distance between the locking mechanism and the carrier of the output shaft keeps constant in the locking position to prevent slippage of the fixer and ensure the working head firmly fixed.

Abstract: Provided is a power tool including a housing body having a first side and a second side and housing a motor and has an overmold bumper formed on at least the first side of the housing body protruding outwardly from the first side of the housing body such that an outer surface of the overmold bumper defines an outermost point of the power tool in a direction orthogonal to a motor axis of the power tool. The overmold bumper has a longitudinal span of at least 60% of a total length of the housing body in a direction along the motor axis, is formed of an elastomeric material and includes raised indicia.

Abstract: A power tool comprises a housing having at least two housing parts and at least one recess, a portion of the recess provided by each housing part, and a bearing located in the recess. The power tool includes a seal comprising an elongate seal member located between the housing parts to seal at least a portion of the housing. The seal includes at least one polymeric extension part extending from the elongate seal member and in contact with an external part of the bearing without extending around the bearing. The polymeric extension part of the seal prevents the external part of the bearing from rotating with respect to the housing during use of the power tool.

Abstract: In a handheld machine tool having a tool housing, in which a drive motor is situated for driving a drive element equipped with at least one clamping surface, to which a spindle-locking device equipped with a blocking element and at least one spindle cylinder is assigned, the at least one spindle cylinder being able to be clamped in a spindle-lock operation of the spindle-locking device between the at least one clamping surface and the blocking element to prevent the drive element from rotating relative to the tool housing, wherein a positioning element associated with the spindle locking device is situated at least in sections on the at least one clamping surface, the positioning element being situated at least partially in the region between the at least one spindle cylinder and the at least one clamping surface.

Abstract: In a handheld machine tool having a tool housing, in which a drive motor is situated for driving a drive element equipped with at least one clamping surface, to which a spindle-locking device equipped with a blocking element and at least one spindle cylinder is assigned, the at least one spindle cylinder being able to be clamped in a spindle-lock operation of the spindle-locking device between the at least one clamping surface and the blocking element n order to prevent the drive element from rotating relative to the tool housing, the spindle-locking device has an impingement element, which is developed to impinge on the at least one spindle cylinder with a specified force in the direction of the at least one clamping surface.

Abstract: The invention relates to a motor spindle comprising at least one spindle drive which can be supplied with energy and/or operating supplies via at least one feed line. This motor spindle has a fixedly installed first coupling element of a multi-coupling, to the ports of which the feed lines for transmitting energy and/or operating supplies are connected. The invention also relates to a machine tool comprising such a motor spindle, wherein the machine tool has a second coupling element of the multi-coupling. On this second coupling element, the respective complementary ports for transmitting energy and/or operating supplies are arranged.

Abstract: A spindle with a composite material spindle housing insert and a composite material spindle shaft insert is disclosed where housing characteristics of the housing insert are calculated to match the spindle characteristics of the spindle shaft to provide optimum spindle performance.

Abstract: A power tool includes a tool housing, an output spindle, a motor received in the tool housing, a transmission coupled to the motor and configured to transmit torque from the motor to the output spindle, a clutch assembly, and a hammer assembly. The clutch assembly includes a clutch mechanism configured to interrupt torque transmission from the transmission to the output spindle when an output torque exceeds a threshold, and a clutch housing composed of a non-metallic material and supporting at least a portion of the clutch mechanism. The hammer assembly includes a hammer mechanism configured to apply axial impacts to the output spindle when the hammer mechanism is engaged, and a hammer housing composed of a heat conductive material and supporting at least a portion of the hammer mechanism.

Abstract: A handheld tool apparatus comprising a spindle blocking apparatus and a torque limiting unit that includes at least one limiting spring and a stop arrangement that is supported movably against the limiting spring. It is provided that the stop arrangement of the torque limiting unit nonrotatably secure a wedging arrangement of the spindle blocking apparatus.

Abstract: The invention describes a hand-held power tool having a drive train, which includes a motor with a rotor, a drive shaft, and a transmission. According to the invention, at least one flywheel mass is provided that is positionable rotationally symmetrical to the drive shaft and connectable to the drive shaft for co-rotation therewith.

Abstract: A hand-held oscillating tool has a linear motor and an accessory attachment mechanism configured for releasable coupling to an accessory blade.

Abstract: A representative power tool according to the invention performs a predetermined operation on a workpiece at least by axial linear movement of a tool bit 119 coupled to a front end region of a housing 103. The power tool includes driving mechanisms 113, 115 that are housed within the housing 103 and linearly drives the tool bit 119, and a dynamic vibration reducer 151 that has a weight 153 which is allowed to linearly move under a biasing force of an elastic element, and reduces vibration caused during operation, by movement of the weight 153 in the axial direction of the tool bit. A dynamic vibration reducer housing space 149 for housing the weight 153 and the elastic element of the dynamic vibration reducer 151 is integrally formed with the housing 103.

Abstract: A cutter hub pin drive mechanism and a quick disconnect hub for a pelletizer and a pelletizer having a cutter hub pin drive mechanism are provided. The pelletizer has a cutter hub that includes a cutter hub holder which is engaged with the pelletizer shaft through a plurality of drive pins. The drive pins ride in drive pin channels formed by grooves cut into an inner surface of the cutter hub holder and aligned grooves formed in the outer surface of the forward end of the pelletizer shaft. By machining of grooves into the cutter hub holder and shaft to form channels that receive the drive pins, more precise engagement between the pelletizer shaft, cutter hub holder and drive pins is obtained, resulting in improved torque transmission from the shaft to the cutter hub. Also provided is a seal around the pelletizer shaft to prevent the egress of fines into the drive pin area which might otherwise interfere with the unobstructed movement of the cutter hub holder necessary to adjust blade position.

Abstract: Drivers and drive systems (e.g., off-axis drive systems, pneumatic motors, multi-gear drive systems, and/or the like), and kits comprising drivers with drive systems, such as those, for example, configured to move a drive shaft.

Abstract: A drilling rig includes a base and a rotation unit for drilling a hole in a mine surface. The rotation unit is moveably coupled to the base. The drilling rig further includes a cable feed device for feeding a cable bolt into the hole created by the rotation unit. The cable feed device is moveably coupled to the base and includes a pair of wheels and a transmission. The cable bolt is received between the pair of wheels. The transmission is coupled between the rotation unit and at least one of the wheels to transmit power from the rotation unit to at least one of the wheels.

Abstract: A gas-engine-powered handheld working machine has a working unit driven by a engine capable of running on a gas fuel supplied from a gas cartridge. The gas cartridge is arranged such that when the handheld working machine is disposed in a normal rest position where the handheld working machine is placed on a horizontal plane with a bottom surface of a machine body lying flat on the horizontal plane, the gas cartridge is disposed in a substantially vertical position with a discharge nozzle directed downwards while a central axis of the gas cartridge extends substantially perpendicular to the horizontal plane.

Abstract: A device for providing elliptical path motion to skin or other surface. The device includes a motor, shaft, and a cam having at least one offset axis cam lobe for creating offset motion. A mounting bracket assembly that has a pair of arms associated with the motor can be moved by the cam in an elliptical path having X-axis, Y-axis and, in exemplary embodiments, Z-axis movement. The mounting bracket assembly may have two brackets, each being associated with an oscillating plate. Each oscillating plate may have a plurality of protrusions or tufts of bristles protruding therefrom. Elliptical movement of the oscillating plates creates offset elliptical motion of the protrusions associated with each oscillating plate. A fluid delivery system may be incorporated to provide fluid through the device. The device may be used for cleaning, stimulation or treatment of skin.

Abstract: Illustrative embodiments of power tools with spindle locks are disclosed. In one illustrative embodiment, a power tool may include a drive train including an output assembly, the output assembly including a spindle configured to support a tool element, a power source configured to selectively supply energy to the drive train to cause the output assembly including the spindle to rotate, a switch movable between a first position in which the power source does not supply energy to the drive train and a second position in which the power source supplies energy to the drive train, and a spindle lock configured to automatically engage the output assembly including the spindle when the switch is in the first position and to automatically disengage the output assembly including the spindle when the switch is in the second position, the spindle lock preventing rotation of the output assembly including the spindle when engaged.

Abstract: A tool chucking device, in particular an oscillation tool chucking device, includes a tool holder that has a first form locking element and a second form locking element. The form locking elements are provided at least for a form locking connection to a machining tool in a circumferential direction about a rotational machining axis. The form locking elements are mounted rotatably with respect to each other at least relative to a rotational axis that is oriented at least substantially parallel to the rotational machining axis and/or are mounted movably with respect to each other along at least one movement axis that is oriented at least substantially perpendicular relative to an axis that is parallel to the rotational machining axis.

Abstract: An oscillating drive for a power tool includes a wobble shaft located on a drive shaft of a motor for a power tool, and a wobble member rotatably supported on the wobble shaft. The wobble member includes a wobble drive structure that defines a drive axis. A tool driver includes a tool drive structure at one end that is coupled to the wobble drive structure and a tool holder configured to releasably retain an accessory tool. Rotation of the drive shaft causes the wobble shaft to wobble about an axis of the drive shaft. The tool driver holds the wobble member against the rotation of the wobble shaft such that the wobble member wobbles without rotating which results in an oscillating motion of the drive axis of the wobble member in a plane that is parallel to the axis of the drive shaft. The oscillating motion of the drive axis causes the tool driver to oscillate.

Abstract: Equipment serves to form consolidated soil columns having a non-circular cross-section, and includes a mast (2, 8), a rotary (3) which is rotatable and translatable along an axis parallel to the mast, a series of hollow rods (4) temporarily unlockable from the rotary (3), and a device to vary the rotational rate of the rotary in one or more prefixed angular ranges. A rotor (21) is directly secured to one of the rods of the string and operatively coupled to a device (20) generating control signals to vary the rotational speed of the rotary in response to the rotor angular position. A through clamp (10) is mounted to the rotatable mandrel of the rotary and is provided with locking members which can be activated to clamp a rod and make it integral to the rotary, and which can be deactivated to release the rod so as to allow the rotary to move relative to the rod.

Abstract: A power tool head is removably connectable to a power tool handle. The power tool head has an output for performing an operation on a work piece, and a housing having an inner surface defining a main cavity for receiving an interface of the power tool handle. The housing has an outer surface generally opposite the inner surface. The power tool head also has a first opening for selectively receiving a drive shaft for transferring rotation of the drive shaft to the output, the opening defining a central axis. The power tool head also has a pin extending substantially parallel to the central axis for depressing a trigger lock button, and a second opening extending from the inner surface to the outer surface in a direction generally radial with respect to the central axis for receiving a release member.

Abstract: An accessory clamping mechanism for clamping an accessory to a working mandrel having a mandrel flange. The accessory clamping mechanism includes: a fastening flange; a driving device for forcing the fastening flange to move between a released position in which the accessory can be removed between the mandrel flange and the fastening flange and a clamped position in which the accessory is clamped between the mandrel flange and the fastening flange; a pushing member connected to the fastening flange; and a first elastic member by which the fastening flange is biased towards the clamped position; wherein the pushing member is arranged on one side of the working mandrel.

Abstract: A bidirectional cross airflow machine tool includes a housing chamber to hold a tool spindle and air inlets and air outlets at two sides thereof. The tool spindle is coupled with a balance weight member which includes a first balance weight portion and a second balance weight portion arranged in an up and down fashion so that the tool spindle generates eccentric rotation against the machine tool. The first and second balance weight portions respectively have a first vane set and a second vane set. The first vane set sucks air via the air inlets at one side of the machine tool during rotation of the tool spindle. The air is transmitted from the first vane set to the first and second balance weight portions, and then is discharged via the second vane set through the air outlets at another side of the machine tool to form cross cooling airflow.

Abstract: A power tool is provided with a prime mover which causes the tool to rotate and a housing which houses the prime mover. In a back-end face that is positioned on an opposite side on the housing from a tool side, a back-end groove, into which a user can position his/her web between his/her thumb and forefinger, is formed. A pair of side-face grooves, into which the user can place the thumb and forefinger, are formed in both side faces of the housing. A depth changing portion is formed in at least one of the side-face grooves, such that the depth is reduced toward the back-end face of the housing. According to this structure, even when the housing is gripped directly from the back-end face, the user can easily draw up or raise the power tool.

Abstract: A hand-held power tool device includes at least one spindle unit, which is provided in particular for transmitting a drive motion of a drive unit to a tool receptacle, and a locking unit, which is provided in particular for locking the at least one spindle unit in at least one locking state, and which has at least one spindle lock element, which includes at least one entrainment element, and which is provided for at least partially transmitting the drive motion of the drive unit to the at least one spindle unit in at least one operating state. The spindle lock element has at least one clamping surface, which is situated at least partially offset from the at least one entrainment element at least in an axial direction.

Abstract: A power tool may include a rotational force generating device and a rotational driven shaft coupled to a rotational drive shaft of the rotational force generating device via a transmission mechanism, so that the rotation of the rotational drive shaft is transmitted to the rotational driven shaft via the transmission mechanism. One or each of the rotational drive shaft and the rotational driven shaft is rotatably supported by at least three bearings.

Abstract: The invention relates to a hand-held machine tool, particularly to a drill hammer and/or chisel hammer, having a hand-held machine tool housing and a transmission chamber with at least one transmission element arranged inside the hand-held machine tool housing. According to the invention, the hand-held machine tool includes a pressure equalization unit, provided for equalizing pressure in the transmission housing and serving at least partially for supporting the transmission element.

Abstract: In a grinder, a terminal plate is projectingly provided on an upper surface of a controller. A connection portion, which accommodates a female terminal and includes a slit into which the terminal plate enters, is projectingly provided on a lower surface of a main body portion of a switch block. At the time of assembling of the switch block and the controller, the terminal plate that enters into the connection portion from the slit is inserted into and connected to the female terminal. First and second projections that cover a formation surface of the slit in the connection portion when the connection portion is inserted with and connected to the terminal plate are formed on the upper surface of the controller.

Abstract: Mechanisms, assemblies, systems, tools, and methods incorporating the use of an offset drive shaft within an independently rotating member are provided. An example mechanism includes a base and a main shaft mounted to rotate relative to the base, a first drive shaft mounted inside the main shaft, and a first drive feature engaged with the first drive shaft. The main shaft includes a proximal end, a distal end, and a main shaft rotational axis defined therebetween. The first drive shaft is offset from the main shaft rotational axis. A first drive feature rotational axis is defined for the first drive feature and is fixed relative to the base as the main shaft rotates. The first drive feature rotates the first drive shaft.