Abstract: A powered fastener driver having a motor, a biasing member configured to store a force for driving a fastener, a lifter configured to release the force, a piston configured to be urged by the force towards a bottom-dead-center position to drive the fastener into a workpiece, and a magnet coupled to the lifter for rotation therewith. The magnet is formed as a single piece including a first pair of poles having a first north pole face and a first south pole face, and a second pair of poles including a second north pole face and a second south pole face. The first north pole face is adjacent the second south pole face, and a pole junction is defined between the first and second pairs of poles. A sensor is configured to detect the pole junction. A controller is configured to control the motor based on detection of the pole junction.

Abstract: A powered fastener driver includes a housing, a nosepiece extending from the housing, a driver blade movable within the nosepiece between a ready position and a driven position the driver blade comprising a plurality of drive teeth on a first side of the driver blade and a plurality of locking projections on a second side of the driver blade, a piston coupled to the driver blade for movement therewith, a driver cylinder within which the piston is movable, a storage chamber cylinder containing pressurized gas therein and in fluid communication with the driver cylinder, a first end of the driver cylinder being affixed to a corresponding first end of the storage chamber cylinder, and a latch actuator assembly adjacent the driver blade, wherein the latch actuator assembly includes a latch to engage one of the plurality of locking projections to prevent the driver blade from moving toward the driven position.

Abstract: A control system for a power tool is disclosed. The control system comprises: a sensing unit configured to sense an operating characteristic of the power tool; a first control unit configured to determine whether the operating characteristic is within a safe operational range, and to output a first control signal at least partially based on the determination; a second control unit configured to determine whether the operating characteristic is within a safe operational range independently of the first control unit, and to output a second control signal at least partially based on the determination; and an output unit configured to receive the first and second control signals and to activate the power tool when the first and second control signals are received.

Abstract: Disclosed is a nail gun having an accidental shooting prevention structure. More particularly, the nail gun having an accidental shooting prevention structure has a function of controlling not to be shot when not loaded or continuously driven except when a nose of a contact member is pressed to a target object and, at the same time, a trigger is pulled.

Abstract: Systems and methods for implementing an electronic clutch in a powered fastener driver. One fastener driver includes a motor, a trigger, a position sensor, a speed sensor, and a controller. The position sensor is configured to sense a position of the lifting assembly. The speed sensor is configured to sense a speed of the motor. The controller is configured to provide power to the motor. The controller is configured to receive speed signals from the speed sensor indicative of the speed of the motor, and determine whether the speed of the motor has dropped by a speed drop threshold within a first period of time. The controller is configured to activate an electronic clutch to electronically brake the motor for a second period of time. In response to the second period of time having passed, the controller is configured to provide power to the motor.

Abstract: A pneumatic tool includes a trigger configured to perform a first operation of operating a drive part, a contact member configured to perform a second operation of operating the drive part, a timer configured to measure the time during which the drive part can be operated by the second operation of the contact member and to switch the operation mode of the drive part after the time has elapsed, and a timer switch configured to control the operation of the timer. The first operation of the trigger is transmitted to the timer switch using a transmitting member.

Abstract: An adaptor configured for mounting to a nose stem of a fastener gun, with the adaptor including a flexible elongate body portion that is stretchable over the nose stem of the fastener gun to retain the body portion thereon, and including an end affixed to the body portion, where the end is configured to engage with a mountable building fixture to secure the mountable building fixture to a building surface via a fastener discharged from the fastener gun. The mountable building fixtures may be plastic washers, metallic washers, as well as various plates or hangers, such as joist hangers or truss plates or other such connectors.

Abstract: A fastening tool for driving a fastener into a workpiece is described herein. The fastening tool includes a contact trip, a magnet, and a magnetometer. The contact trip is disposed at a first end of the fastening tool and is configured to move toward a second end of the fastening tool opposite of the first end when the contact trip engages the workpiece. The magnet is configured to generate a magnetic field. The magnet is coupled to the contact trip such that movement of the contact trip causes the magnet to move. The magnetometer is configured to detect a change in the magnetic field generated by the magnet when the magnet moves relative to the magnetometer and, based on the detected change in the magnetic field, to generate a signal indicating when the contact trip engages the workpiece.

Abstract: A gas-spring fastener driving tool has a working cylinder and a pressurized main storage chamber to hold the gases that will drive the cylinder's piston and driver combination. An end cap is placed on the upper (back) end of the pressure chamber, above the cylinder, with a set of seals and a set of fasteners; the fasteners can be removed by a user—one at a time—to safely release the stored gas pressure from the tool, for maintenance or repair of the interior parts. The end cap includes a fill valve positioned along the side of the working cylinder which allows ‘refilling’ gases to flow through passageways in the end cap, then into the working cylinder and pressure chamber, thereby bringing the tool up to its nominal working pressure. In some embodiments, the fill valve can also act as a pressure release valve.

Abstract: A driving tool comprising: a plunger; a motor configured to move the plunger from a bottom dead center to a top dead center; a driving unit configured to use the plunger to drive a fastener by moving the plunger from the top dead center to the bottom dead center; a voltage fluctuation information acquisition unit configured to acquire voltage fluctuation information indicating a fluctuation amount of a voltage applied to the motor during movement of the plunger; and a control unit configured to control the motor based on the voltage fluctuation information.

Abstract: A breaching tool is powered by a blank cartridge in a breaching gun and includes a barrel, a propulsion assembly in the barrel, and a spring assembly around the barrel. When the cartridge is discharged in a chamber in fluid communication with the barrel's bore, pressure produced by the discharged cartridge propels the propulsion assembly forward from a ready position to an extended position, forcing a ramming head forward. The spring assembly has a compression spring in a spring can that biases the assemblies and ramming head back to the ready position. The breaching tool also includes a handguard that extends over and past the barrel's proximal half and surrounds a rear portion of the spring can. When used with a semiautomatic breaching gun, the breaching tool includes gas block over a gas port in the barrel, and a gas tube extends back to the breaching gun's bolt carrier group.

Abstract: A fastening tool includes a contact trip operatively associated with a contact trip switch to enable a fastener drive system to be fired when the contact trip reaches a firing position, after having engaged a work surface. If a dry-fire condition exists in a magazine connected to the fastening tool, the movement of the contact trip is completely taken up or absorbed by a biasing agent so that the contact trip switch is not closed. The biasing agent also limits the amount of force that can be applied to the contact trip switch in the event an operator slams the contact trip against a work surface or drops the fastening tool nose-first onto an unyielding surface.

Abstract: In an illustrative embodiment, a motor-driven orthopedic impacting tool for orthopedic impacting in the hips, knees, shoulders and the like may be capable of holding a surgical implement such as a broach, chisel, or other end effector, which when gently tapped in a cavity with controlled percussive impacts, can expand the size or volume of an opening of the cavity or facilitate removal of the surgical implement from the opening. A stored-energy drive mechanism may store potential energy and then release it to launch a launched mass or striker to communicate a striking force to an adapter in either a forward or reverse direction. The tool may further include a combination anvil and adapter and an energy adjustment mechanism to adjust the striking force the launched mass delivers to the adapter.

Abstract: A driver capable of suppressing an increase in a load of a bumper is provided. The driver includes a striking portion provided movably and configured to move to strike a fastener; a bumper configured to be in contact with the striking portion to restrict a range of movement of the striking portion; and a housing configured to support the bumper, the driver further including a load suppressing portion configured to suppress an increase in a load of the bumper based on the load of the bumper detected by a load detection portion or number of operations of the striking portion within a predetermined time.

Abstract: A fastener-driving tool includes a housing and a workpiece-contacting element movable between a rest position and an activated position. The tool also includes a trigger connected to the housing and movable between a rest position and an activated position, a control valve including an actuating pin, an actuation lever movably connected to the trigger and movable between a rest position and an actuating position adjacent to the actuating pin, and a trigger control mechanism associated with the actuation lever and configured for moving and holding the actuation lever in the actuating position. In a powered mode, the trigger control mechanism causes the-actuation lever to move and remain in the actuating position such that the tool is actuated each time the workpiece-contacting element contacts a workpiece and moves to the activated position causing the actuation lever to contact the actuating pin and initiate an actuation of the tool.

Abstract: A powered fastener driver includes a driver blade movable from a top-dead-center (TDC) position to a bottom-dead-center (BDC) position for driving a fastener into a workpiece and a drive unit for providing torque to move the driver blade from the BDC position toward the TDC position. A rotary lifter is engageable with the driver blade and configured to receive torque from the drive unit for returning the driver blade from the BDC position toward the TDC position. The lifter has a body, a drive pin coupled to the body, and a roller positioned on the drive pin. The roller includes an engagement section configured to receive an end portion of a tooth of the driver blade. The lifter includes a means for aligning the engagement section with the end portion of the tooth on the driver blade to facilitate meshing between the end portion and the roller.

Abstract: A nail gun includes a frame unit, a flywheel, and a nail-striking device that includes an actuation unit, an impact member and an accidental discharge prevention unit. The actuation unit includes a safety subunit. The impact member has a confining portion. The accidental discharge prevention unit includes a restraining member located between the confining portion of the impact member and the safety subunit. The actuation unit is operable to convert the restraining member from a restraining state, in which the restraining member restrains movement of the confining portion of the impact member, to a releasing state, in which the movement of the confining portion of the impact member is permitted.

Abstract: A gas spring-powered fastener driver includes a cylinder, a moveable piston positioned within the cylinder, a driver blade attached to the piston and movable therewith between a ready position and a driven position, a lifter to move the driver blade from the driven position to the ready position, and a transmission including an output shaft operatively coupled to the lifter to provide torque to the lifter. The fastener driver also includes an input to provide torque to the transmission and a clutch positioned downstream of the input and operably coupled to the output shaft to limit an amount of torque transferred to the output shaft and the lifter. In response to an application of a reaction torque to the output shaft above a predetermined threshold, torque from the input is diverted from the output shaft via the clutch.

Abstract: A nail gun includes a nail gun body unit, and a magazine unit. The nail gun body unit has a drive module, a nail-discharging section, and a firing channel that is formed in the nail-discharging section, and that extends along a firing axis. The nail-discharging section has a base segment, and a guide segment having a guide surface. The base segment has a tip section that has a tip face. The tip face and the guide surface have a height difference in the direction of the firing axis. The magazine unit is connected to the nail gun body unit, and is adapted to accommodate nails. The drive module is adapted for firing the nails that are positioned within the firing channel to move along the firing axis.

Abstract: A fastener driving tool including a housing and a workpiece contact element movably connected to the housing, where the workpiece contact element is movable between a rest position and an activated position. A trigger assembly including a bottom assembly and a top assembly is movably connected to the housing. The tool includes an actuation lever movably connected to the bottom assembly of the trigger assembly and movable between a rest position and an engaged position. The top assembly includes a downwardly extending block configured to engage the actuation lever. A damper mechanism is associated with the actuation lever and is configured to control a rate of movement of the actuation lever.

Abstract: A fastener-driving tool is provided and includes a housing and a workpiece-contacting element movably connected to the housing, where the workpiece-contacting element is movable between a rest position and an activated position. A trigger is movably connected to the housing such that the trigger is movable between a rest position and an activated position. The tool further includes an actuation lever movably connected to the trigger and movable between a rest position and an activated position. A damper mechanism is associated with the actuation lever and is configured to control a rate of movement of the actuation lever between the activated position and the rest position.

Abstract: A retaining device adapted for use with an electric nail gun includes a retaining member; a swing arm unit adapted to swing between a proximate position and a distal position with respect to a flywheel of the nail gun; an impact unit movably connected to the swing arm unit, including an engaging portion, and being movable between a pre-striking position, where the engaging portion is confined within the retaining member when the swing arm unit is at the distal position, and a striking position, where the engaging portion is removed from the retaining member; and a retrieving unit connected between the impact unit and the swing arm unit, and configured to bias the impact unit to move to the pre-striking position.

Abstract: A combustion-powered fastener-driving tool that include a chamber member retainer assembly configured to enable the controller of the tool to prevent the chamber member of the tool from moving to an open unsealed position and to ensure the tool's combustion chamber remains sealed until the piston fully returns to its pre-firing position.

Abstract: A nail gun includes a housing, a power output assembly, a cylinder, and a firing assembly. At least a part of the power output assembly is disposed in the housing. At least a part of the cylinder is disposed in the housing. The firing assembly includes a firing pin provided with a first drive teeth capable of being driven, the first drive teeth includes a locking tooth provided with a rotating shaft, the rotating shaft is provided with a roller wheel, and the roller wheel is rotatable about a rotating axis.

Abstract: A compliant tip member for a fastening tool that includes a body having compressible and protective properties includes a forward section, a rearward section longitudinally opposite to the forward section and lateral sides connecting the forward and rearward sections. The compressible feature is in the form of a compression portion that forms at least a portion of the forward section. The compliant tip member forward section is compressible relative to the rearward section due to projections, such as wings or lobes that deform when the forward section is pressed against a workpiece by the nose of the fastening tool. The compliant tip member includes a recess within a surface between the forward section and the rearward section. The recess is shaped to receive the nosepiece of the fastening tool.

Abstract: A locking device for adjusting nailing force of an electric nail comprises a power box, a driving motor, and an upper cylinder and lower cylinder provided on the right side of the power box. The driving motor is connected with connecting arm through a reducing mechanism. The end of the connecting arm is provided with an eccentric spindle. A lower piston is provided inside the lower cylinder. The lower piston is hinged with a piston arm on its top side. The piston arm is connected to the eccentric spindle. An upper piston is provided inside the upper cylinder. A firing pin is provided at the center of the sidewall on the left side of the upper piston. The left end of the firing pin sticks out of the upper cylinder. A fixing part is provided on the left side of the upper cylinder and above the power box.

Abstract: A nail drive device of electric nail gun includes a nailing rod and a rotary actuator that can output a specific rotation angle and can drive the nailing rod to move downward for nailing. Specifically, the rotary actuator includes a stator and a rotor surrounding it, between the stator and the rotor, even groups of electro-magnetic mutual action components are configured in pairs, to generate a tangential force to drive the rotor to rotate for a specific rotation angle, and to drive the nailing rod to move for a nailing stroke. The nailing stroke can be determined by the specific rotation angle. Thus, through the above configuration of the rotary actuator, the structure of the electric nail gun can be simplified.

Abstract: A fastener driving tool for fixation of parts by way of nails or staple propelled by a driving piston under the effect of the combustion of one or more fluids. More specifically, a device of controlling the relative proportions of the fluids used for combustion including a combustion chamber having a first inlet port for inputting a first fluid having at least one variable fluid characteristic, and a second inlet port for inputting a second fluid. A first actuator is operably coupled to said first inlet port, adapted to switch between a first open state, allowing said first fluid to move into said combustion chamber at a first mass flow rate that is dependent on said at least one variable fluid characteristic, and a first closed state, preventing or at least limiting said first fluid from moving into said combustion chamber.

Abstract: A cut-off circuit diagnostic device includes a motor control module that controls a motor, and an external safety module that is detachably attached to the motor control module. The motor control module includes: a motor drive unit that has an inverter circuit for controlling a voltage applied to the motor by pulse width modulation control and a drive circuit for driving a power element of the inverter circuit; a cut-off circuit that cuts off power supply to the drive circuit; and a first cut-off circuit diagnostic unit that has a first diagnosis pulse generator for generating a first signal to control the cut-off by the cut-off circuit and that detects whether or not the power supply to the drive circuit is cut off according to the first signal.

Abstract: A gas spring-powered fastener driver includes a cylinder, a moveable piston positioned within the cylinder, and a driver blade attached to the piston and moveable therewith from a retracted position to a driven position to drive a fastener into a workpiece. A fill valve is coupled to the cylinder and operable to selectively fill the cylinder with gas to a pressure.

Abstract: In a driving tool, during and/or after a driving operation has been completed, a restriction member is retained in an on-position by a cam. An energizing switch is retained in an on-state by an actuation portion of the restriction member. Because of this configuration, if a trigger is released during and/or after the driving operation has been completed, an electric motor continues to be activated, which causes a driver to return to a standby position.

Abstract: A pneumatic fastener driver operable in a single sequential mode and a bump-fire mode, and includes a housing, a nosepiece, a trigger moveable between a default position and a depressed position, a contact arm movable relative to the nosepiece between an extended position and a retracted position, and a timeout mechanism operable in the bump-fire mode to inhibit the drive cycle from being initiated in response to inactivity of the contact arm over a preset time interval defined by unwinding of a mainspring that is initially wound in response to the trigger being actuated from the default position to the depressed position. The pneumatic fastener driver also includes a counting assembly having a female barrel pivotably coupled to a pivot shaft of the trigger and driven by the mainspring and a lockout linkage coupled to the female barrel that is capable of interfering with a portion of the trigger.

Abstract: A nailing depth adjustable air nail gun, including a gun head, a gun body, a clip device, a safety rack installed on the gun head, an adjusting mechanism and a trigger gear, the adjusting mechanism comprises a locating pin and an adjusting screw, the adjusting screw is located at the upper end of locating pin, the bottom of adjusting screw contacts the upper end of locating pin, the adjusting screw comprises a shaft and a head, a regulating wheel, a pressure spring, the pressure spring is fitted over the shaft, the gun head is provided with a limiting base corresponding to the regulating wheel, the limiting base has a strip bulge extending towards the regulating wheel, multiple strip slots matching the strip bulge are uniformly distributed on the outer wall of the regulating wheel, the strip bulge is stuck in the strip slot.

Abstract: A safety structure used in the anti-auto-firing device of electric nail guns, including a base cover and an anti-auto-firing device. The anti-auto-firing device comprises a safety rack, an adjusting-connecting device, an on-off lever, an inching switch and a return spring. A safety device is fitted over the on-off lever. The safety device comprises a retaining ring, a bearing elastic piece and a locating spacer. A support plate is disposed in the base cover. The support plate is provided with a lever slot, the retaining ring is fixed to the on-off lever. Both ends of bearing elastic piece prop the retaining ring and locating spacer respectively. The locating spacer props the side of support plate. The bearing elastic piece has elastic force keeping the end of on-off lever away from the inching switch.

Abstract: A fastening tool having a depth adjustment mechanism mounted on a longitudinally movable door of a nosepiece assembly. The depth adjustment mechanism including a depth adjustment wheel having an internal threaded section extending along an axis and being rotatable about said axis; and an adjustment screw disposed within the depth adjustment wheel and engaging the door plate, the adjustment screw having an external threaded section that engages the internal threaded section of the depth adjustment wheel, so that a rotational movement of the depth adjustment wheel with respect to the adjustment screw effects a relative axial movement of the adjustment screw and the longitudinal movement of the door to increase and decrease the depth that a fastener is driven into a workpiece.

Abstract: A driver capable of suppressing an increase in a load of a bumper is provided. The driver 10 includes a striking portion 12 provided movably and configured to move to strike a fastener; a bumper 33 configured to be in contact with the striking portion 12 to restrict a range of movement of the striking portion 12; and a housing 11 configured to support the bumper 33, the driver 10 further including a load suppressing portion configured to suppress an increase in a load of the bumper 33 based on the load of the bumper 33 detected by a load detection portion or number of operations of the striking portion within a predetermined time.

Abstract: A fastener driving tool that forces air from its variable venting volume beneath the piston of the working cylinder and directs that forced air through passageways and toward an electronic controller and/or an electric motor before being vented to atmosphere, thereby drawing heat away from those components during an operational cycle of the movable piston. When the piston returns to its initial position, environmental air is drawn through the same passageways, again past the electronic controller and/or electric motor, thereby twice cooling these “hot” components during a single operational cycle.

Abstract: A driver capable of achieving favorable workmanship at the time of driving of a fastener into a workpiece to be driven is provided.

Abstract: A driving tool includes a housing having a support shaft for operably supporting an operating member, a contacting member which is capable of contacting and separating from a workpiece into which a fastener is to be driven, and which operates by contacting the workpiece, a pressure chamber to which and from which a compressible gas is supplied and discharged, a striking part operating in a direction to strike the fastener, a gas supply mechanism, and a transmission control member for controlling the operation of the gas supply mechanism, said operation being based on the operation of at least one of the operating member and the contacting member or the operation of both of them, wherein the fastener is struck when an operating force is applied to the operating member and to the transmission control member, and the contacting member is operated.

Abstract: A compressed air nailer comprises a control line configured to trigger a driving process when a valve pin is displaced relative to a valve sleeve into an actuated position. The valve sleeve is configured to move between a triggering position and a locked position. A switching surface is coupled to at least one of a trigger and a placing sensor and configured to actuate the valve pin. An outer sleeve is configured to guide the valve sleeve. The switching surface is positioned at a switching surface position relative to the outer sleeve when both the trigger and the placing sensor are actuated. The switching surface is configured to displace the valve pin into the actuated position when the valve sleeve is positioned in the triggering position. The switching surface does not displace the valve pin into the actuated position when the valve sleeve is positioned in the locked position.

Abstract: A compressed air nailer comprises a control line configured to trigger a driving process when a valve pin is displaced relative to a valve sleeve into an actuated position. The valve sleeve is configured to move between a triggering position and a locked position. A switching surface is coupled to at least one of a trigger and a placing sensor and configured to actuate the valve pin. An outer sleeve is configured to guide the valve sleeve. The switching surface is positioned at a switching surface position relative to the outer sleeve when both the trigger and the placing sensor are actuated. The switching surface is configured to displace the valve pin into the actuated position when the valve sleeve is positioned in the triggering position. The switching surface does not displace the valve pin into the actuated position when the valve sleeve is positioned in the locked position.

Abstract: The present disclosure relates to a surgical fastener applying apparatus for applying fasteners to body tissue. The apparatus includes a cartridge receiving half-section defining an elongated channel member configured to releasably receive a firing assembly and a single use loading unit. A lockout structure prevents insertion of the single use loading unit into the channel member after the firing assembly is mounted to the cartridge receiving half-section. Alternatively, the lockout structure prevents full insertion of the firing assembly into the cartridge receiving half-section, if the single use loading unit is not engaged with the firing assembly.

Abstract: This relates to a driving tool for driving fastening means, nails/staples, into a workpiece, a trigger lever, which can be actuated manually, and a workpiece contact element, which can be actuated by placing the tool onto the workpiece, the tool operates in a single shot mode, in which each individual sequence of an actuation of the workpiece contact element with subsequent actuation of the trigger lever triggers a driving-in cycle, the tool operates in a bump firing mode, in which, with the trigger lever continuously actuated, each individual actuation of the workpiece contact element triggers a driving-in cycle, a resetting assembly providing, by means of which the tool is resettable from the bump firing mode into single shot mode in an automatic, time-controlled resetting operation. It is proposed that a signaling assembly, which emits a feedback signal to the user before, after or during each automatic resetting operation, is provided.

Abstract: A fastener driving tool including a housing and a workpiece contact element movably connected to the housing, where the workpiece contact element is movable between a rest position and an activated position. A trigger assembly including a bottom assembly and a top assembly is movably connected to the housing. The tool includes an actuation lever movably connected to the bottom assembly of the trigger assembly and movable between a rest position and an engaged position. The top assembly includes a downwardly extending block configured to engage the actuation lever. A damper mechanism is associated with the actuation lever and is configured to control a rate of movement of the actuation lever.

Abstract: Disclosed is nail gun which fires nails stably, including: a housing, a trigger, an electric motor, a first cylinder, a second cylinder, a crank, a linkage, a nail firing assembly, and a nail supplying assembly, the second cylinder being disposed in the first cylinder, inside the first cylinder being provided a first piston, inside the second cylinder being provided a second piston, the linkage being in transmission connection with the first piston, the electric motor being in transmission connection with the crank via a transmission mechanism and driving, via the linkage, the first piston to make an axial motion in the first cylinder, a circulating air channel being provided between the first cylinder and the second cylinder, the nail firing assembly including a striker which is connected with the second piston.

Abstract: For a spring tool for actuating explosive fasteners to operate at its maximum potential the firing pin guide should be pushed securely against the rear of the fastener and the tip of the fastener should be pushed securely against the substrate. To achieve this, the action of the operator pushing the tool forward to actuate the tool moves the trigger body forward while compressing the firing spring until the trigger body travels the exact distance needed to release the trigger ball. A step or backstop insert is added to the inside of the trigger body such that at the exact distance where the trigger ball is released, the step contacts the rear of the firing pin guide so that all internal components of the tool to form a solid (contacting) stack, from the tip of the fastener to the end cap of the tool.

Abstract: A mechanical timer mechanism can include a driven gear mounted to a rotary damper and a drive gear operably coupled to the driven gear. In bump mode, movement of a trigger to its firing position can initially move the drive gear into its wind-up position. Thereafter, a contact trip can move the drive gear to its wind-up position and an actuator of the trigger to its firing position each time the contact trip is activated, unless the timing mechanism has timed out between firings. In sequential mode, the drive gear can be moved into a timer lock-out position which holds the contact trip in a bypass position in which the contact trip will not engage the actuator of the trigger unless the trigger is moved to its firing position prior to activation of the contact trip.

Abstract: A handle assembly and a stapler including the same are provided. The handle assembly includes: a first handle component and a second handle, a first end of which is rotatably connected with the first handle component. The handle can be divided into a first handle component and a second handle, and a linkage state of the first handle component and the second handle can be controlled by a moving position of a slider which can be returned by action of a compression spring after the slider is free from a force exerted by the indicator, and a position of the compression spring is defined by a first limiting structure of the slider and a second limiting structure of the first handle component.

Abstract: Various embodiments of the present disclosure provide a combustion-powered fastener driving tool fuel cell assembly including a fuel cell, fuel cell adapter, and fuel cell adapter cap for a combustion-powered fastener driving tool. The fuel cell, the fuel cell adapter, and the fuel cell adapter cap enable both the fuel cell adapter and the fuel cell adapter cap to be attached to a fuel cell and particularly a sealing member of the fuel cell in one efficient step. This single step process can be done manually or automatically, and is substantially more efficient and less time-consuming than the known fuel cell assemblies.

Abstract: An electric stapler includes a main body, a handle, a striking assembly, and a safety mechanism between the main body and the handle. The handle is movable with respect to the main body between an original position and an unlock position. The striking assembly includes a striking mechanism for striking the staple out and a trigger switch on the handle for triggering the striking mechanism. The trigger switch has a strikable state and a locking state. When the handle is at the original position, the safety mechanism is at a locking mode to make the trigger switch at the locking state. When the handle is at the unlock position, the safety mechanism is at an unlock mode to make the trigger switch at the strikable state. An angle between the moving direction of the handle and the striking direction is smaller than 90 degrees.