Abstract: A pneumatic tool has a shell, a setting space formed in the shell, a selector valve, an assembling hole, a through hole, and a positioning element. The selector valve is rotatably mounted in the setting space and has two positioning indentations formed on the selector valve at a spaced interval. The assembling hole is formed in the shell along a straight direction and communicates with the setting space. The through hole is formed in the shell between and communicates with the assembling hole and the setting space. The positioning element is disposed in the shell, is movably mounted in the assembling hole along the straight direction, abuts against the selector valve by an elastic element, and has a base and a protrusion. The protrusion is formed on the base, extends through the through hole, and abuts against one of the two positioning indentations of the selector valve.

Abstract: A pressurized fluid flow system for percussive mechanisms comprises a cylinder coaxially disposed in between an outer casing and a piston which reciprocates due to the changes in pressure of the pressurized fluid contained inside a front chamber and rear chamber located at opposites sides of the piston. The discharge of fluid from these chambers being conducted through a set of discharge channels and the supply of fluid to the front chamber being conducted through a set of supply channels and a front set of recesses. The supply of fluid to the rear chamber being conducted through a piloted valve.

Abstract: An impact tool includes a housing; and a motor, a tubular tool holder, a driving mechanism, a rotation shaft, a driving mechanism housing region inside the housing. The tool holder has a distal end on which a bit is mountable. The driving mechanism is configured to hammer the bit. The rotation shaft is disposed in the driving mechanism and rotates by a rotation of an output shaft of the motor. The driving mechanism housing region houses the driving mechanism in a sealed state inside the housing. The air escape path that releases air inside the driving mechanism housing region to outside of the driving mechanism housing region is formed inside the rotation shaft while an inlet of the air escape path is formed on an outer peripheral surface of the rotation shaft.

Abstract: A mode setting unit sets a parameter setting mode or a work mode. A parameter setting unit sets a plurality of parameter values in the parameter setting mode. A torque estimation unit calculates a tightening torque value by using a detection result from an impact detection unit. In a work mode, a control unit stops a rotation of a motor based on the plurality of parameter values set by the parameter setting unit and in accordance with the tightening torque value calculated by the torque estimation unit. In the parameter setting mode, a work information storage unit stores the tightening torque value calculated by the torque estimation unit during a tightening work according to a user operation, and the parameter setting unit sets the plurality of parameter values based on the tightening torque value stored in the work information storage unit.

Abstract: A pressure reversing valve for a fluid-actuated percussive drilling tool has a front thrust surface in communication with a rear chamber and a rear thrust surface in communication with a pressurized volume isolated from the flow coming from the source of pressurized fluid. The pressurized volume is in communication with a front chamber and allows the valve to take advantage of the imbalanced profile of the pressures inside the front and rear chambers that naturally occurs for enabling an asymmetric feeding process of the rear chamber that is also less sensitive to the bottom hole pressure.

Abstract: A striking tool restricting movement of an intermediate member toward a striker reliably prevents no-load strokes. A hammer drill includes a cylindrical tool holder holding a tip tool, a motor, a piston that reciprocate with rotation from the motor, a striker that reciprocate in cooperation with the piston, an intermediate member reciprocably accommodated in the tool holder between the striker and the tip tool and in contact with a rear end of the tip tool at a normal strike to indirectly transmit a strike from the striker to the tip tool, and at least two ring members that move in a front-rear direction accommodated in the tool holder at a front of the intermediate member between the tool holder and the intermediate member. At least one ring member is made of metal.

Abstract: The invention relates to a device (1) for sexual stimulation having a hollow piston (3), a drive cylinder (5), and transmission means (7, 9) for converting a rotational movement of the drive cylinder into an axial movement of the hollow piston, wherein the drive cylinder (5) encloses the hollow piston (3) at least partially.

Abstract: A rotary power tool, such as an oil pulse driver, includes: a motor, a pinion rotated by the motor, planet gears that mesh with the pinion, an internal gear that meshes with the planet gears and a shaft that is rotationally driven by the planet gears and disposed frontward of the planet gears. The internal gear comprises an internal gear part and an internal gear retaining part for holding the internal gear part. An oil unit bearing is disposed frontward of the internal gear part, and the oil unit bearing is held at a front part of the internal gear retaining part.

Abstract: A vessel and method to perform subsea wellbore related operations, e.g. slim hole technique drilling of a subsea wellbore are disclosed. The vessel has a hull with at least one moonpool defining first and second moonpool areas. A vertical tower is mounted on a tower supporting hull structure and has a vertical operative face. A hoisting device has a winch and winch driven cable, and is adapted to suspend a load from said vertical tower via said at least one winch driven cable and to manipulate the suspended load in a firing line of the tower that extends along and outside of said vertical operative face of the tower. The tower is slewable about a vertical slew axis by means of a slewing drive at least into first and second operative positions wherein the firing line extends through the first and second moonpool areas respectively.

Abstract: A hand-held power tool includes at least one transmission housing, at least one single-stage transmission unit, at least one motor housing, and at least one compensating unit. The at least one transmission unit is disposed in the at least one transmission housing. The at least one compensating unit includes at least one movably mounted compensating mass element. The at least one compensating unit is disposed at least for the most part in the at least one transmission housing or between the at least one transmission housing and the at least one motor housing.

Abstract: An anvil for use with an impact wrench includes a first end, a second end opposite the first end, a shank adjacent the first end, and a head adjacent the second end. The shank includes a diameter and an outer cylindrical surface that defines a longitudinal axis that extends centrally through the anvil between the first end and the second end. The head includes a plurality of planar faces and an outer cylindrical surface. The outer cylindrical surface defines a diameter of the head. A ratio between the diameter of the shank and the diameter of the head is between approximately 1:1 and approximately 1.35:1.

Abstract: A power tool includes a button useful to select a direction of rotation of the power tool. The button can be used to select between forward, reverse, and neutral. The power tool includes a housing which is coupled with an abutment structure which engages with the button. A sawtooth engagement is formed between the abutment structure and the button. The sawtooth engagement can be asymmetric in shape to provide different force vectors depending on whether the button is pushed in a first or a second direction. The sum of the resistive forces can be the same whether the button is pushed in the first or second direction, owing to the asymmetric forces caused by the sawtooth engagement which make up for differences in other internal resistive forces.

Abstract: A drill comprising: a body, the body comprising a housing formed internally with at least two chambers; a rear handle mounted on the body; a tool holder mounted on the front of the body; an electric motor mounted in a first chamber, the electric motor comprising an end cap attached to a motor housing; a transmission mechanism mounted in a second chamber which is in driving connection with the electric motor, the transmission mechanism being driven by the electric motor when the electric motor is activated to either impart impacts to and/or rotate a cutting tool when held by the tool holder. The end cap engages with the housing to form a separating wall which separates the first and second chambers.

Abstract: A hammer drill comprises a drive mechanism including a spindle, a first ratchet coupled for co-rotation with the spindle, a second ratchet rotationally fixed to the housing, and a hammer lockout mechanism adjustable between a first mode and a second mode. The hammer drill further comprises a clutch adjustable between a first state and a second state. The hammer drill further comprises a collar rotatably coupled to the housing and movable between a first rotational position in which the hammer lockout mechanism is in the first mode and the clutch is in the first state, a second rotational position in which the hammer lockout mechanism is in the second mode and the clutch is in the first state, and a third rotational position in which the hammer lockout mechanism is in the second mode and the clutch is in the second state.

Abstract: A method for setting an expansion anchor by a power tool, and a power tool that performs the method, is disclosed. In an embodiment, the method includes exerting rotary impacts on the expansion anchor in order to expand an expansion sleeve in dependence on a first rotational speed until a tightening torque corresponds to a threshold value, exerting a predetermined number of rotary impacts on the expansion anchor in dependence on the first rotational speed, and exerting rotary impacts on the expansion anchor by the power tool in dependence on a generated second rotational speed for a predetermined period of time.

Abstract: A medical device, and a ratchet for a medical device, include a torque-guiding element and a torque discharging element, between which a switchable toothed unit is arranged so that, in accordance with a switching position of the toothed unit, torque from the torque-guiding element is transferred to the torque discharging element, said toothed unit includes two torque transfer sleeves arranged in a nested manner and which are arranged and produced such that both can be brought into torque-transmitting contact with an intermediate sleeve.

Abstract: A clutch device includes a guiding element, a first clutch element being capable of sliding relative to the guiding element, a second clutch element being capable of sliding relative to the guiding element, an elastic element including a first connecting leg and a second connecting leg which are respectively connected with the first clutch element and the second clutch element, and a rotating element being capable of rotating about a first axis relative to the guiding element. The rotating element includes a first supporting portion for contacting with the first connecting leg, which is disposed at a first axial position of the first axis, and a second supporting portion for contacting with the second connecting leg, which is disposed at a second axial position of the first axis.

Abstract: Disclosed herein is a medical device. The medical device includes two coaxially aligned solenoids and a cannulated armature configured to be received within the two coaxially aligned solenoids.

Abstract: An orthopedic impacting tool including a motor, an energy storage chamber, a striker, and an anvil. The motor stores energy in the energy storage chamber and then releases it, causing the striker to apply a controlled force on an adapter to create a precise impact for use in a surgical setting. The tool may further comprise a combination anvil and adapter. Alternatively, the tool may comprise a gas spring assembly system for generating an impact force. The tool further allows forward or backward impacting for expanding the size or volume of the opening or for facilitating removal of a broach, implant, or other surgical implement from the opening. An energy adjustment control of the tool allows a surgeon to increase or decrease the impact energy. A light source and hand grips improve ease of operation of the tool.

Abstract: The present invention provides a multi-mode drive mechanism. The multi-mode drive mechanism may be employed, for example, in a power tool, for driving a chuck supporting an end effector, such as a drill bit or spiral cut bit, for acting on a work surface. For example, when employed in a power tool, the mechanism can generate rotating, reciprocating, or simultaneous rotating and reciprocating motion. Cutting with simultaneous rotational and reciprocating motion lessens the potential for undesired walking or wandering of the cutting bit by actively removing debris from the cut. Additionally, multi-mode drive mechanisms provide increased functionality in a single tool to accommodate a variety of situations and materials. One aspect of the invention provides a multi-mode drive mechanism including: an input shaft, a reciprocating assembly, an output shaft, a reciprocating block, and a shift collar. The input shaft terminates in an input external spur gear.

Abstract: A safety wrench for coupling and uncoupling hammer union type connections employs a spring biased retractable bolt to apply a blow to the union lug. In use the bolt is retracted rearward to compress compression springs positioned within an internal spring bore in the bolt to a position away from the lug of the union to be rotated. When the bolt is disengaged from the ratchet mechanism, the compression springs rapidly extend to rapidly move the bolt forward to impact the union lug and rotate the union. The bolt may be retracted by a hydraulic or pneumatic cylinder, a hand lever, or a rack and pinion mechanism. Reversing the position of the safety wrench on the union lug will allow the union to be rotated in the opposite direction.

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 holder for a head replacement-type cutting tool is provided with a holder main body and a tubular coupling member 3 which is housed in an attachment hole formed on the holder main body and made of a metal material lower in hardness than the holder main body. A recessed part is formed on an inner circumferential face of the attachment hole, the coupling member is engaged with the recessed part by firmly attaching the outer circumferential face thereof on the inner circumferential face of the attachment hole, and the coupling member is provided with an attachment screw part which is screwed into a head-side screw part formed at the replacement-type cutting head.

Abstract: An impact tool which transmits an impact force to a tool bit supported by a casing includes: a cylinder which is attached to the casing and has an opening on one end side thereof to which the tool bit is inserted; an intermediate element which is provided in an inside of the cylinder so as to be able to move straight, has a projection projecting in a radial direction so as to regulate a range of the straight movement, and transmits the impact force to the tool bit; and passages and which communicate a space in an inside of the cylinder at a position nearer to the tool bit than the projection with the outside of the cylinder and penetrate through the cylinder in the radial direction.

Abstract: A pneumatic tool includes a housing that contains an installation tunnel, an air supplying channel and first and second air inlets, a control valve installed in the installation tunnel for shifting among first, second and third positions; a controller that is mounted on the control valve and has two paddles; a pushing rod that passes through the controller and the control valve; and a trigger that is attached to the pushing rod. The pneumatic tool provides the controller for a user to selectively operate with his/her left hand or right hand to perform forward/reverse switching and speed adjustment.

Abstract: A power tool includes a housing in which a motor is supported and an output shaft coupled to the motor that extends from the housing. A tool holder is secured to the end portion of the output shaft which is configured to releasably retain an accessory tool. The power tool includes an accessory change tool having a driver portion and a handle portion. The driver portion is used to install and remove the accessory change tool from the tool holder. The handle portion and the driver portion are configured to pivot into a folded position at which the handle portion is located adjacent the driver portion. A retainer assembly is incorporated into the housing that is configured to releasably retain the accessory change tool on the housing with the accessory change tool in the folded configuration.

Abstract: A machine tool is disclosed. The machine tool has a tool receptacle for receiving a tool on a working axis, a housing, and a striking mechanism. An impact stop is provided for a beater or an intermediate beater. An impact absorber has two polymer-based absorber rings that are offset axially to one another and are disposed so that they overlap radially and has two iron-based disks disposed axially between the absorber rings.

Abstract: A pneumatic tool includes a handle body, an output unit having a driving head, a driving unit for driving the output unit, and a switching unit operable to change the rotational direction of the driving head. The handle body includes: a surrounding wall having a top surface and an axial space that has a central axis and that is adapted to permit the driving unit to be mounted therein; a mounting unit disposed at the top surface of the surrounding wall and adapted to permit the switching unit to be mounted therein; and a through hole formed vertically through the surrounding wall and in spatial communication with the axial space, the through hole being adapted to permit the output unit to be mounted therein.

Abstract: A pneumatic tool has an outer casing, a selector valve, a switching button and a cover. The outer casing has two elongated holes formed through an external surface of the outer casing, and facing and communicating to each other. The selector valve is rotatably mounted in the outer casing and has a communicating hole and two connecting blocks. The connecting blocks are axially formed on and protrude from an external surface of the selector valve, align with each other and respectively face the elongated holes. The switching button is detachably connected to one of the connecting blocks and extends out of one of the elongated holes. The cover is detachably connected to the outer casing to cover the other elongated hole and has a shape corresponding to a shape of the external surface of the outer casing.

Abstract: A hand power tool device includes a hammer tube and a B-impact damping system. The B-impact damping system includes at least one damping mechanism configured to damp recoil energy. The damping mechanism is disposed at least partially radially outside of the hammer tube in at least one operating state.

Abstract: The present invention relates to a down-the-hole hammer comprising an external cylindrical outer wear sleeve (5), a sliding piston (8) mounted for reciprocating movement within the outer wear sleeve to strike a percussion bit (1) of a drill bit assembly located at the forward end of the outer wear sleeve.

Abstract: A hammer drill (101) comprises a main body (103) which houses a driving motor (110) and a driving mechanism and a handle (109) which is movable to the main body (103). Further, a coil spring (160) which biases the handle (109) is provided. In a state that the coil spring (160) biases the handle (109), the handle (109) is moved against the main body (103) in a longitudinal direction of a hammer bit (119) and vibration transmission from the main body (103) to the handle (109) is prevented.

Abstract: A powered ratchet drive for a ratchet wrench includes a pair of elongate pawls for driving an output member of the wrench. Each pawl may have a lower portion pivotally attached to a rocker and an upper portion comprising teeth for engagement with teeth of the output member to turn the output member. The upper portion of the pawl extends outward at an angle with respect to the lower portion. The ratchet may include a compression spring secured inside a cavity of each pawl for biasing the pawl into engagement with the output member. The ratchet also includes a reversing switch mechanism for selectively configuring the ratchet in a forward-driving configuration and in a reverse-driving configuration. The switch mechanism includes a cam disposed between the pawls. The cam has a groove for receiving one of the pawls during operation depending on the configuration of the ratchet.

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: An impact tool performs a processing operation on a workpiece by carrying out an impact operation on a tool bit in a longitudinal axis direction. The impact tool includes a motor having a rotor and a stator, a tool main body housing the motor, a drive shaft parallel to a longitudinal axis of the tool bit and rotatably driven by the motor, and an oscillating member that is supported by the drive shaft and that carries out an oscillating movement in the axial direction of the drive shaft based on the rotational motion of the drive shaft. A tool drive mechanism is coupled to the oscillating member so that the oscillating movement of the oscillating member linearly moves the tool bit in the longitudinal axis direction. The motor is an outer rotor motor in which the rotor is disposed on an radially outer side of the stator.

Abstract: A handheld power tool, including a tool socket on a drive shaft for purposes of holding a tool, the drive shaft executing a rotating and partially tangentially striking movement using a tangential striking mechanism drivable by a drive. The tangential striking mechanism has an anvil associated with the drive shaft and a hammer associated with the drive, movable with respect to each other so as to strike each other axially when under the effect of the force of at least one first spring, and to strike each other tangentially when the anvil and the hammer are rotated. The hammer has a main mass, and an extra mass that is under the effect of a second spring couplable to the main mass.

Abstract: A rotary tool includes a drive device, a driven member configured to be rotatably driven by the drive device, a spindle rotatably supported within a housing, an impact attenuation mechanism disposed between the driven member and the spindle and transmitting rotation of the driven member to the spindle while an impact applied to the driven member being attenuated, and a driven member support bearing rotatably supporting the driven member, so that the driven member can rotate relative to the spindle.

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: A hand-held power tool device comprises an impact tool unit, an impact detection unit, and a blocking detection unit. The impact tool unit is configured to drive an insertion tool at least partially in at least one of a rotational fashion and a translatory fashion. The impact detection unit is configured to detect at least one impact parameter, such as linear acceleration running at least substantially parallel to a processing axis of the insertion tool. The blocking detection unit is configured to detect at least one blocking parameter, such as at least one an angular acceleration about the processing axis of the insertion tool. The impact detection unit and the blocking detection unit are formed at least partially as one-piece.

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: A hand tool device has a tool spindle and a hammer mechanism which includes a hammer and at least one curve guide driving the hammer at least during a hammer drilling operation. The tool spindle has at least one bearing surface on which the hammer is movably supported in at least one operating state.

Abstract: A hand tool device has a hammer mechanism including a hammer, at least one curve guide which drives the hammer at least during the hammer drilling operation, and at least one hammer mechanism spring which (i) stores at least a part of an impact energy in at least one operating state, and (ii) holds the hammer in the peripheral direction in at least one operating state.

Abstract: Various embodiments herein provide a remotely adjustable feed system for remotely controlling the movement of a tool head on a machining tool along an axis of motion by means of converting reciprocal linear motion, i.e., back and forth linear motion, into rotary motion. The rate of movement of the tool head along the axis of motion may be controlled by varying the distance of linear motion in each cycle of linear reciprocal motion and/or by varying the rate of linear reciprocal motion cycles per unit time. Alternatively, or in addition, the rate of movement of the tool head along the axis of motion may be controlled by varying the amount of rotary motion that results from a given amount of reciprocal linear motion. Additionally, in some embodiments, the movement of the tool head may be controlled by directly controlling the rotary motion that drives the tool head along the axis of motion.

Abstract: Disclosed herein is a hydraulic hand tool. The tool includes a frame, a hydraulic drive, a drive shaft, and a seal assembly. The hydraulic drive is connected to the frame and includes a housing. The drive shaft extends from the hydraulic drive. The seal assembly is located between the drive shaft and the housing. The seal assembly includes a first seal member, a second seal member, and a carrier ring. The first seal member is in contact with the housing. The second seal member is in contact with the drive shaft. The carrier ring has an outer annular groove and an inner annular groove. The first seal member is located within the outer annular groove. The second seal member is located within the inner annular groove. The carrier ring includes a polymer material configured to elastically deform in response to a hydraulic load from hydraulic fluid at the hydraulic drive.

Abstract: A rotary power tool includes a housing, a spindle defining a working axis, and a motor supported by the housing. The motor is operable to drive the spindle. The rotary power tool also includes a handle movably coupled to the housing and a vibration isolating assembly disposed between the housing and the handle. The vibration isolating assembly attenuates vibration transmitted from the housing to the handle. A battery pack is removably coupled directly to the handle and configured to provide power to the motor.

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 pneumatic tool includes a plastic tool body, a metal front hood connected to and disposed in front of the plastic tool body so as to define an accommodating space therebetween, and an air motor disposed within the accommodating space. The air motor includes a front bearing unit and a rear bearing unit disposed behind the front bearing unit. At least one of the front and rear bearing units is connected fixedly to the metal front hood. The air motor further includes a cylinder body disposed between the front and rear bearing units and connected integrally to the one of the front and rear bearing units, and a rotor disposed rotatably within the cylinder body.

Abstract: A power tool with a working head for holding a working element. The power tool includes a motor having a motor output shaft for driving said working element and a duct having an inlet locatable in proximity to a point of contact between the working element and a workpiece. A dust collection chamber has an inlet in fluid communication with an outlet from said duct, and an outlet in fluid communication with atmospheric air. A fan is operable to transport air from the inlet of said duct to the inlet of said dust collection chamber. A first drive wheel is mounted on the motor output shaft. A second, driven, wheel mounted on a second shaft and a drive belt connects the first, drive wheel to the second, driven wheel, for transmitting power from the motor output shaft to the second shaft. The fan is mounted on the second shaft.

Abstract: A handheld tool apparatus having a tool guidance unit, which has a tool spindle and a tool chuck, and having an impact mechanism which has a striker that in at least one operating state percussively drives the tool guidance unit. It is provided that a mass of the striker be at maximum two thirds as great as a mass of the tool guidance unit.

Abstract: An impact tool includes a motor, a hammer casing with an opened rear end and a disk-shaped member coupled to the hammer casing to close the opened rear end and to rotatably support a spindle. A first engagement member is formed on an outer face of the disk-shaped member. A second engagement member is formed on an inner face of the recess and engaging with the first engagement member to restrict a movement of the hammer casing in a second direction parallel to a rotation axis of the spindle. A third engagement member is formed on an outer face of the hammer casing. A fourth engagement member is formed on an inner face of the housing body and engaging with the third engagement member so as to restrict a movement of the hammer casing in the first direction.