Abstract: A vibration exciter for construction machines, particularly for vibration pile drivers, includes at least one axle having at least two imbalance masses. At least one rotary piston pivot motor is provided, by way of which the rotational position of at least one imbalance mass, relative to the at least one other imbalance mass, can be changed. The rotary piston pivot motor has a pivot motor housing that is mounted on a pivot motor shaft so as to rotate relative to it. At least one rotary vane is disposed on the pivot motor shaft, the angle of rotation of which vane is limited by at least one stop disposed on the pivot motor housing. The maximal angle of rotation of the at least one rotary vane amounts to less than 160 degrees, preferably 150 degrees or less.

Abstract: A power tool according to one aspect of one embodiment described in the disclosure includes a brushless motor, a battery voltage detection unit configured to detect a voltage of a battery that provides energy for driving the brushless motor, a rotational position detection unit configured to detect a rotational position of the brushless motor, and a control unit configured to control a drive output supplied to the brushless motor based at least in part on a signal from the rotational position detection unit. The control unit controls a current conduction angle and/or an advance angle supplied to the brushless motor so that, during control of the drive output to the brushless motor, a rotational speed or a conducting current of the brushless motor approaches or reaches a target value, the target value being based at least in part on a battery voltage detected by the battery voltage detection unit.

Abstract: Provided is a post-processing device including a stapling unit that performs stapling on a sheet bundle with a driving force caused by a rotation of a motor, a power supply unit that supplies power only to the motor, a sheet bundle detector that detects presence or absence of the sheet bundle which is inserted into the stapling unit, and a stapling time storage unit that stores an execution time of one session of the stapling, wherein the power supply unit initiates power supply to the motor based on a detection result of the sheet bundle detector and stops supplying the power to the motor after an elapse of a predetermined time which is stored in the stapling time storage unit.

Abstract: A power tool includes a housing, an output member that rotates about a longitudinal axis, and a motor drivably connected to the output member. A rotational motion sensor is arranged in the housing and operable to detect a user input that includes a rotational motion of the housing in a desired rotational direction about the longitudinal axis of the output member. A controller is configured to receive a first input indicative of a user-desired rotational motion of the output member, and a second input, from the rotational motion sensor, indicative of an actual rotational motion of the power tool. The controller determines a user-desired rotational direction of the output member about the axis from the first input, determines an actual rotational direction of the housing about the axis from the second input, and causes the motor to drive the output member to simulate ratcheting movement in the user-desired rotational direction.

Abstract: An electronic torque wrench or other tool, and a method and a computer program for using the same, are disclosed. The disclosed systems allow a user to operate the tool in either a manual mode or automatic mode. In the manual mode, torque or angle targets are input into the wrench before the torqueing operation, and in the automatic mode, preset torque or angle targets are selected by the user. A user can also lock the tool so only a specific torqueing operation can be used without unlocking the tool. The torque and angle values can be input simultaneously such that a work piece can be torqued to a predetermined torque and angle without separate operations. An indicator can also be implemented that indicates the progress of the torqueing operation.

Abstract: An anti-rotation wire lock for use in a piston to reduce rotation of the anti-rotation wire lock while seated inside a wrist pin lock groove of the piston. The anti-rotation wire lock includes a wire lock body which curls from a first end of the wire lock body and a second end which extends in a direction out of a plane defined by the curled wire lock body. In addition, wire lock tools are disclosed for inserting and removing the anti-rotation wire lock.

Abstract: An electric power tool includes a motor, a current detection unit, an operating portion, a current threshold setting unit and a control unit. The current threshold setting unit sets a current threshold so as to change in accordance with changes in a motor current which flows when the motor is started as usual until a predetermined period of time elapses since the control unit has started driving of the motor. When the predetermined period of time has elapsed, the current threshold setting unit fixes the current threshold to a constant value which corresponds to a set torque.

Abstract: A battery pack of an electric power tool comprises ten lithium-ion cells. The ten lithium-ion cells are connected in series. Each lithium-ion cell has a diameter equal to or less than 18 millimeters, a length equal to or less than 65 millimeters, and an internal resistance equal to or less than 30 milliohms. Because the battery pack has a high voltage in operation and is therefore able to supply large current, the battery pack is preferably configured incapable of being used in a conventional electric power tool that cannot operate under such a large current.

Abstract: The present invention relates to a system and method for providing power of maximum relevant specific energy. The system is more particularly defined as an operator-portable power supply utilizing a fuel containing hydrogen peroxide for energy, coupled with water and oxygen recovery, storage and delivery means. Extracting energy, water, and oxygen from the hydrogen peroxide fuel and refining to consumable forms (electrical, pneumatic, hydraulic, etc. energy; potable water; breathable oxygen) is for the purpose of increasing the overall energy output of the power supply per carried mass. The resultant water displaces water otherwise requiring transportation by the operator and the oxygen allows for hyperoxic respiration, increasing the metabolic power output of the operator.

Abstract: The present invention is directed, in part, to an apparatus and methods related to an expandable storage tank for compressed gas, the storage tank prepared from a puncture resistant, flexible fabric material in which the storage tank is expandable to a desired volume when inflated and when deflated. During periods of non-use the storage tank is retracted in a compact and folded manner to save space compared to when the tank is inflated. The storage tank is utilized by employing its use in conjunction with a traditional air compressor and can be configured with or without a rigid outer shell that expands in relation to the amount of compressed air transferred into the expandable storage tank.

Abstract: The present invention relates to a restart protection device and a method thereof, wherein the restart protection device is installed in an electric device, and comprises a switch module and a restart protecting module. The restart protecting module is connected between the switch module and a motor of the electric device, used for preventing the current outputted by an external electrical power from directly flowing into the motor when the electric device is restarted. To start the electric device, the user must follow the steps of the restart protection method, such that the unexpected accidents resulted from the sudden restart of the electric device can be effectively prevented.

Abstract: A device for regulating an increase in the output torque over time of an electric drive motor, including a monitoring unit for monitoring an operating variable of the electric drive motor, a regulating unit for regulating the operating variable for regulating the increase in output torque over time, a control unit for activating the regulating unit as a function of a time derivation of the monitored operating variable, the regulating unit being designed to be deactivated after a predetermined period of time. A method for regulating an increase in the output torque over time of an electric drive motor is also described. A corresponding tool and a computer program having program code for carrying out the method are also described.

Abstract: A tightening device and a tightening method are able to check that a fastening member has been fastened to a desired set torque or greater after being tightened, without loosening the fastening member.

Abstract: The invention relates to a handheld power tool (1), including: a mobile element (100) and a stationary element (102); a rotatable actuator; a ball nut (200); a ball screw (202) having a first end (202a) connected to the mobile element (100); and a universal joint (10, 12, 14) arranged so as to be driven by the rotatable actuator and so as to rotate the ball nut (200) on said ball screw (202) in order to move the ball screw (202), and thus the mobile element (100), relative to the stationary element (102). The universal joint can be advantageously retained inside two concentric spherical bearings (50a, 60a, 70a, 80a), thus making it possible to take up the axial forces in two directions. It is thus possible to eliminate any radial force on the ball screw (202) and have angularly variably rotational output.

Abstract: A tooling system that includes a drive unit configured to provide rotational force to a tool member. The tool member is attached at a mount on the drive unit. A camera associated with the drive unit is aligned to capture a target on the tool member. The data is sent to a controller that identifies the tool member based on the target. The controller determines whether the tool member is correct for performing an operation on a work piece. If the tool member is correct, the controller may set one or more operating parameters on the drive unit. If the controller determines that the tool member is not correct, the drive unit is disabled. Further, a signal may be sent to inform an operator of the issue.

Abstract: A multi-purpose electric tool has a motor, an impact block, a detection assembly configured to detect the position and the movement state of the impact block, and a main control circuit board configured to control whether the motor is powered off upon reaching a preset state according to the detected information of the detection assembly. In the control method, the detection assembly feeds back the detected information to the main control circuit board, if the impact block is not impacting reciprocatingly, the main control circuit board performs torque control according to whether the preset state is reached; and if the impact block is impacting reciprocatingly, the main control circuit board enables the motor to output in a normal mode which does not limiting the current.

Abstract: A torque applying system includes a torque applying tool having a motor and rotating output spindle, a torque sensor that measures an instantaneous torque exerted by the output spindle during a fastening cycle, and a controller operatively connected to the tool to control the tool's rotational speed during the fastening cycle. The controller is programmed to control the tool's rotational speed to be [(?F??C)/t]/r, wherein t is a time constant of speed control, ?F is a target final torque for the fastening cycle, and r is a torque rate.

Abstract: The present document describes a torque wrench adaptor system for applying a torque value to an operating shaft of a manual brake of a railcar. The torque wrench adaptor system comprises: a central hub for a hand wheel, the central hub attachable to the operating shaft via the central hub; and a socket adaptor removably engageable in the central hub, and adapted for engagement with a ratchet tool; wherein the ratchet tool is for applying torque which is transmitted to the operating shaft via the socket adaptor and central hub until the torque value is reached and applied to the operating shaft.

Abstract: A power hand tool comprising: a trigger (23); a motor (22); a blade (25) driven by said motor (22), an electronic circuit (10) for controlling the angular position or the speed of the motor (22) on the basis of the instantaneous position of the trigger. The electronic circuit (10) is arranged to detect a predefined movement sequence of the trigger (23) and to execute a function in response to the detection of such a sequence.

Abstract: A multi-segmented handle built in tiers, with vibration isolators separating one tier from the other tiers. The tier that connects via isolators with a machine base is the one to which the other tiers are attached. The tiers shape is circular or a series of circles to diminish the shock wave and each tiers tubes are filled with a vibration dampening element turning the tier into a harmonic absorber. Each tier has attachments to accommodate the isolators for attaching one tier to another tier. The shapes that the tiers take are not limited to circular but includes all shapes, curved or straight and the isolators include all types of isolators.

Abstract: In suppressing chatter vibration of a rotary shaft in a machine tool by fluctuating rotation speed of the rotary shaft, easy setting of a fluctuation parameter is realized. In a monitor apparatus of the machine tool, a graph showing a fluctuation amplitude of the rotation speed is displayed. On this graph, a current fluctuation position (first point) is indicated by a black circle marker, and also, a power limit line L of a motor fluctuation period is depicted based on a predetermined equation. In an area not exceeding the power limit line L, a new fluctuation position (second point) having a larger fluctuation amplitude and a shorter fluctuation period than the current fluctuation position is calculated and indicated with an arrow A guiding this new point from the current fluctuation position.

Abstract: A fastening tool which controls the return behavior of a driver blade by using a blade stop and/or a bumper. The fastening tool can remove the driver blade from the drive path upon its return after driving a fastener into a workpiece and bring the driver blade to a resting state by using a bumper to orient the driver blade out of alignment with the drive path and into contact the driver blade stop.

Abstract: A hydraulic pulse tool includes a power supply unit, a drive unit electrically connected to the power supply unit, a hydraulic pulse torque generating unit coupled to the drive unit and rotatable by the drive unit to produce impacts for causing the drive to produce an electric current change, and a control unit for judging the electric current change and controlling the operation of the drive unit subject to the judgment result. Subject to the above-stated technical characteristics, the hydraulic pulse tool, in addition to the shutoff function, can reduce errors in judgment and achieve multi-stage torque output control.

Abstract: An electric power wrench for fastening and loosening joints includes: a main shaft for delivering a torque to a joint, an electric motor that is arranged to selectively drive the main shaft in two opposed rotational directions, a control unit for controlling the drive of the electric motor, and a transmission that connects the electric motor to the main shaft. The control unit has a first drive mode in which it controls the electric motor such that it delivers a continuous torque in a forward direction, and delivers torque pulses in an opposite backward direction, wherein the transmission includes an inherent play and wherein the torque pulses are produced in said play.

Abstract: In a valveless percussive drill of the hydraulic type and incorporating a hammer assembly, an “intermediate” shoulder between the head portion and cushion portion of a reciprocating piston engages the end face of a distributor or liner, rather than an interior bearing structure for the piston. This end face can be made harder than the ulterior bearing structure, which may include a surface made of a different material than the piston. Collectively, the result is a percussive drill with the hammer assembly incorporating the piston substantially less susceptible to failure due to galling as the result of contamination in the working fluid.

Abstract: An electric tool and a method for fastening a threaded member by using it, the electric tool has a torque output system and a control system configured to, according to a fastening level selected by a user, invoke a corresponding data to drive the motor to enable it to output with designated single-time impact quantity and impact times.

Abstract: An improved vibration dampening system has been developed for handheld electrical power tools. The vibration dampening system includes a material that a controller selectively activates with an electrical current to increase the rigidity of the material and dampen random vibrations detected by the controller. The material is positioned between a foot member that helps support the tool against a work piece and both hand grips for the tool. Thus, the vibration dampening system reduces the impact of random vibrations on both hands of an operator.

Abstract: A fastener installation tool and related method are provided for installing fasteners in boards, where the boards are installed immediately adjacent one another, without a gap established therebetween. The tool can include an alignment projection that projects a preselected distance downwardly from a lower surface of the tool. The alignment projection can be disposed between opposing corners of first and second boards to install a fastener without establishing a gap between the boards. This construction can be suitable for installing boards constructed from materials that shrink over time, such as wet, treated lumber or other materials, and even non-shrinkable boards where tighter spacing is desired. A related method of installation is provided.

Abstract: A method is provided for setting a fastener in a workpiece. The method includes: monitoring a parameter of the power tool during operation of the power tool, where the parameter is indicative of the placement of a fastener being driven by the power tool in relation to the workpiece; detecting, a change in the parameter, where the detected change in the parameter indicates that the power tool became disengaged with the fastener; modifying operation of the power tool in response to the detected change in the parameter; subsequently detecting a second change in the parameter; and interrupting transmission of torque to the output spindle in response the detected second change in the parameter, thereby properly setting the placement of the fastener in relation to the workpiece.

Abstract: In a programmable torque control method for sensing locking element, at least one sensing locking element and a power torque tool are provided. A s sensed strain signal produced by the sensing locking element is transmitted to a controller of the power torque tool when the sensing locking element is driven by a power torque tool to a desired position and forward and backward rotations of a driving motor of the power torque tool are controlled by the controller, and the forward or backward rotation of the driving motor is determined according to the s sensed strain signal to control a programmable continuous motion until the tightening torque or clamping force reaches to a predetermined target torque value.

Abstract: Illustrative embodiments of impact tools are disclosed. In at least one illustrative embodiment, an impact tool may comprise an impact mechanism including a hammer and an anvil. The hammer may be configured to rotate and to move between a disengaged position in which the hammer does not impact the anvil when rotating and an engaged position in which the hammer impacts the anvil when rotating, and the anvil may be configured to rotate when impacted by the hammer. The impact tool may further comprise an electronic controller configured to cause the hammer to (i) rotate in the disengaged position until reaching a threshold rotational speed and (ii) move from the disengaged position to the engaged position in response to the hammer achieving the threshold rotational speed.

Abstract: An apparatus for accessing longitudinal bores which includes: a length of resilient tube configured to be extendible along at least a portion of its length; wherein one end of the resilient tube includes a utility head thereon; and wherein the other end of the tube is configured to directly or indirectly connect to, and receive a force from, a physical energy source.

Abstract: A device and a method for preventing vibrations (19) in a rotating spindle (1) mounted in at least one front 8 and one rear bearing (9) in a machine tool, wherein the device comprises measuring units (2, 3, 4, 5) for detecting the vibrations (19) and correction device (6) for preventing the vibrations (19) disposed directly about the periphery (10, 11) of the spindle (1) in a contacting or non-contacting manner and that a control unit (7) for processing the measuring units (2, 3, 4, 5) and for calculating the correction values for the correction device (6) is assigned to this device.

Abstract: A filter turning mechanism is attached to an engine in proximity to a filter (such as an oil filter), and may be used to install or remove a filter by turning the filter. The filter turning mechanism contacts a filter, and rotates the filter when the filter turning mechanism is rotated with a tool. One implementation of the filter turning mechanism includes an inner drive gear and a filter drive mechanism. The inner drive gear normally spins freely within the filter drive mechanism, but when pushed into the filter drive mechanism with a suitable tool such as a ratchet extension, the inner drive gear engages the filter drive mechanism, thereby causing rotation of the inner drive gear to rotate the filter drive mechanism as well, which in turn rotates the filter.

Abstract: A pressure protection valve is provided which provides a fluid short circuit between a fluid pressure inlet of a hydraulic tool such as a hydraulic hammer and a low pressure region when the pressure at the fluid pressure inlet exceeds a first trigger pressure equal to a predetermined permissible pressure. This prevents damage to the hydraulic tool which can arise through operation at excessive fluid flow or pressure from hydraulic fluid supplied by a carrier vehicle. The pressure protection valve may maintain fluid communication between the fluid pressure inlet and the low pressure region until the pressure at the fluid pressure inlet reduces to a pressure below a predetermined second trigger pressure which is less than the first trigger pressure, to prevent further operation of the tool until the flow of fluid to the fluid pressure inlet has been stopped by an operator.

Abstract: An apparatus for lifting and supporting a pile is provided. The apparatus includes a support structure coupled to the pile and a lifting device coupled to the support structure. Gripping plates of a lift head engage and lift the pile during extension of the lifting device. During retraction of the lifting device, gripping plates of a gravity vice engage the pile to support the pile in the lifted position. The extension and retraction of the lifting device is alternately repeated to lift the pile in steps to a desired height.

Abstract: A medical or dental, fluid-driven handle with a control or regulation circuit for the limiting, control or regulation to a maximum or predetermined rotational speed and a corresponding process are presented. The handle comprises a rotary part that can be set in rotary motion by a drive fluid, a fluid line carrying the drive fluid to or from the rotary part or a fluid branch line that is connected to a fluid line carrying drive fluid, and a control or regulation circuit designed to limit, control or regulate the rotational speed of the rotary part. An electrodynamic converter is driven by the rotary part for generating electrical energy and at least one actuator element is configured to act on the drive fluid. The actuator element is electrically connected to the electrodynamic converter such that it is supplied with electrical energy generated by the electrodynamic converter.

Abstract: The present invention particularly relates to a hand-held sanding machine with an outer housing (1), a tool shaft (2) and a brushless electric drive motor. In the present invention, the rotor of the drive motor is fastened to the tool shaft (2) of the sanding machine, and the stator (6) is positioned in the outer housing (1). The present invention also relates to a control method for an electric sanding machine.

Abstract: One embodiment includes display device configured to wirelessly receive a first position status from a positioning device; display a first work-tool working-axis leveling status based on the first position status; receive cut parameters; receive a cut-start indication; determine a first work-tool position status difference based on cut parameters and a second position status; present a position status correction indicator; determine that a third position status is within cut parameters; send a cut-start signal to the positioning device operable to actuate the first work-tool; determine a work-tool cut completion; and send a cut-end signal to the positioning device operable to de-actuate the first work-tool.

Abstract: A fastener installation tool including a guide that guides a fastener into a side of a work piece at an angle, while optionally restraining the fastener from wobbling due to rotation, even upon initial entry into the work piece. The guide can define an angled bore including a fastener entrance opening and a fastener exit opening which is adapted to be positioned immediately adjacent the work piece. The guide can include a material ejection port between the openings, through which material bored from the work piece can be evacuated from the angled bore to prevent binding of the material with the fastener. The tool can include a clamp assembly that clamps opposing sides of the work piece to precisely align and steadily hold the angled bore as a fastener is being installed in a side surface. Related methods of using the tool to install fasteners also are provided.

Abstract: A vibratory apparatus for attachment to a container adapted to utilized pressurized air from a portable pressure source, which apparatus includes a base and a vacuum generator connectable to a pressure source, wherein the vacuum generator is attached to the base and adapted to create a vacuum between the base and a container. The apparatus further includes a vibrator attached to the base and adapted to vibrate the base and any attached container and a conduit connectable to the vibrator at a first end and a pressure source at a second, opposite end. The conduit has a passage extending therethrough and a flow restrictor is disposed between the pressure source and the vibrator to allow a predetermined, non-adjustable volume of airflow through the conduit into the vibrator in a first direction of flow.

Abstract: In at least one illustrative embodiment, a rotary impact tool comprises a motor including a rotor and an input shaft coupled to the rotor for rotation therewith about an input axis, an anvil configured to be rotated about an output axis and including an output shaft, a carrier driven by the input shaft and having a passage extending through a distal end thereof, and a hammer supported and driven by the carrier and configured to impact the anvil to cause the anvil to rotate about the output axis. The anvil may comprise a blade coupled to the output shaft and configured to direct a lubricating fluid through the passage when the anvil or carrier rotates about the output axis.

Abstract: An apparatus for drilling a hole in the ground has a hammer drill installed at a bottom of a rod assembled in multi-stages at support structure on the ground. The hammer drill has a pilot hammer drill and a reamer hammer drill coupled to each other through a key structure formed in the vertical direction so as to allow simultaneous rotations and up-and-down movements relative to each other.

Abstract: The disclosure relates to a rock drilling machine, a rotating sleeve and a method of lubricating a shank of the rock drilling machine. The rock drilling machine includes a rotatable shank for connecting a drilling tool. The shank is rotated by a rotating sleeve arranged around the shank. Gears are arranged between the shank and the rotating sleeve. The rock drilling machine is provided with a lubricating system for lubricating the gears and also bearings of the rotating sleeve.

Abstract: A rotation speed control method for impact type fastening tools has a presetting step and a dynamic control step. The presetting step includes setting a plurality of working positions, and setting a PWM signal with a larger duty cycle as a driving signal in a period after energization so that a motor can rotate at a higher speed and improve work efficiency. When a main controller judges, according to a feedback means, that the operation enters an impact phase and torsion control is needed to reduce rotation speed, the main controller makes adjustment by driving the motor with a PWM signal with a lower duty cycle corresponding to a working position currently set by the user. The control method improves work efficiency, and meet the user's need of driving a fastener with a higher rotation speed at an early stage of operation.

Abstract: An extendable multi-tool comprising an extendable pole and a head unit selectively detachably coupled together. The head unit comprises a grasping mechanism configured to engage a light bulb, a control switch and a rotation mechanism. The control switch configured to cause the grasping mechanism to become secured to a light bulb, and to cause the rotation mechanism to automatically detect when a light bulb is secured to the grasping mechanism and then rotate the grasping unit and the secured light bulb in a first direction based on the position of the control switch. The tool further comprises an arm unit for positioning the grasping mechanism in a desired configuration to engage the light bulb, wherein the arm member is coupled to the grasping mechanism.

Abstract: Disclosed is a method for supplying air to a cluster hammer in which a nozzle has been installed. An air distribution block 1 including an air distribution nozzle 3 formed therein is disposed under an air inlet cover 4 of the cluster hammer, into which air is introduced. The hammers 10 are disposed under the air distribution block 1 respectively. Compressed air which has passed through the air distribution nozzle 3 is supplied to each of the hammers 10, and then the hammer 10 is operated. Even when the hammer 10 installed in the cluster hammer is in a flushing position, the cluster hammer is smoothly operated without creating the problems in the operation of the other hammers.

Abstract: Disclosed embodiments are directed toward driver implements and methods for driving rigid members into a support surface. In some embodiments, the disclosed driver implement is combined with a power machine that provides operation signals to the driver implement. Other embodiments disclose a rigid member that is configured to be driven into a support surface by various embodiments of the driver implement.

Abstract: An electric tool has a motor, an implementing member driven by the motor for driving a working element and a controlling circuit for controlling the electric tool. The controlling circuit includes a current detecting module for detecting the current flowing through the motor; a microprocessor for memorizing and storing a current value; an user interface module for an user to select working modes, and the working modes at least comprising a learning mode for recording the current value after the implementing member has driven the working element and a constant torque mode for driving other working elements having the same size based on the recorded current value; and a driving module for driving or stopping the torque output of the motor. The electric tool can achieve the function of electronic clutch so as to drive screws having the same size with substantially the same effect. The present disclosure also discloses a controlling method by using the above controlling circuit.

Abstract: The invention relates to a power tool, which comprises a motor for driving a tool bit rotating, the motor attains a rotational speed, a source for supplying an electric current to said motor, a sensor for measuring said current, and a control device. The control device fulfills the task of detection of a variation of the slope of the current in the course of time, and generates a control signal. The rotational speed of the tool is reduced in response to the control signal. The present invention automatically detects whether the work piece operated by the tool bit reaches a predetermined position by providing electronic control means. It may make sure that the screw is driven into a piece of wood and does not go beyond the predetermined position once detect that the work piece reaches the position and carries out the changing action.