Abstract: A nailing device of the present invention mainly includes a striker for driving nails, a restriction mechanism, a power storing mechanism, and an operation mechanism. By cooperation of the components, the striker is kept in position without moving during the course of power storing, and the striker is automatically recovered to an initial position after firing. Thus, nail can fill to the right position accurately in continuous work. For continuously and quickly working, the nailing device is protected from nail jamming.

Abstract: A nailing device of the present invention mainly includes a striker for driving nails, a restriction mechanism, a power storing mechanism, and an operation mechanism. By cooperation of the components, the power storing mechanism is able to store potential energy. The potential energy is released for firing nail when the restriction mechanism is triggered off. Thus, timing of firing can be controlled by triggering the restriction mechanism. Operation process and firing power of the nailing device is well controlled.

Abstract: A fastening tool having plural power source ports that, when contemporaneously activated, deliver compressed air to a fastener driving assembly to drive a fastener into a workpiece.

Abstract: A technique for improving the cooling performance of a combustion chamber in a combustion power tool is provided. The combustion power tool includes first and second combustion chambers, a partition that separates the first combustion chamber from the second combustion chamber, openings, formed in the partition and communicate the first combustion chamber with the second combustion chamber, and a drive section that moves toward a front end by combustion pressure. The combustion pressure is generated when a flow of flammable gas, which is produced by combustion of the flammable gas in the first combustion chamber propagates to the second combustion chamber through the openings, and burns flammable gas in the second combustion chamber. The combustion gas flows from the first combustion chamber to the second combustion chamber in a direction around a central axis of the second combustion chamber while flowing along an inner wall of the second combustion chamber.

Abstract: An oscillation reducing suspension device for a fan motor of a combustion-powered tool includes a holding web member mounted on a cylinder head and having a central opening to be sleeved on the motor, first and second retaining members disposed to hoop around the motor, and first and second damping members each disposed between the holding web member and a respective one of the first and second retaining members so as to counteract an axial vibration force, thereby minimizing the impact of the axial vibration force.

Abstract: A dual safety combustion powered tool device includes a push member disposed to be pressed against a targeted surface to bring a lever to turn to be closer to an actuating unit. A trigger body is pulled to move the actuating unit so as to permit an actuating region to abut against the lever and to turn the actuating unit to an orientation where an actuating region is engageable with an ignition switch. Subsequently, a further movement of the trigger body to a final-stage position permits the actuating region to switch on the ignition switch so as to ignite combustion for initiation of a stroke movement of a driver blade. With such construction, undesired firing of the combustion powered tool device can be avoided.

Abstract: A fastener actuation system for driving fasteners into a work surface separated a significant distance from a user, the system comprising a fastener actuation tool coupled to a pole assembly, the assembly including a lockout mechanism disposed within the tool. The tool may have a firing pin assembly configured such that depression of the barrel assembly against the work surface loads a firing pin into a ready-to-fire position. In addition, the tool may have a trigger sleeve slidable within the tool housing and having a ramp surface such that forward motion of the trigger sleeve may cause a trigger sear to move along the ramp surface until a point where the sear disengages and the firing pin fires. The lockout mechanism may include a ball and a receptacle, where the receptacle receives the ball if the tool is in an acceptable orientation and does not receive the ball otherwise.

Abstract: According to one aspect of the application, a device for driving a fastening element into a substrate has an energy-transfer element for transferring energy to the fastening element. The energy-transfer element can move preferably between a starting position and a setting position, wherein the energy-transfer element is located, before a driving-in procedure, in the starting position and, after the driving-in procedure, in the setting position. According to another aspect of the application, the device comprises a mechanical-energy storage device for storing mechanical energy. The energy-transfer element is then suitable preferably for transferring energy from the mechanical-energy storage device to the fastening element.

Abstract: This is a kind of deflagration nail gun with sliding components and percussion switch devices. Described percussion switch devices include: station-keeping U-shaped steel wire with a jumper; pivoted percussion switch base with a notch at the back of its upper edge; ignition switch fixed on percussion switch base, with a prominent button upward; touch switch chip, of which, one of its end can be pivoted installed in the ignition switch, another end can extend from percussion switch base to the top touch chip on the top of notch, and the central of touch switch chip is joined to touch button. When the sliding component is located in the front-side position and the upper edge of percussion switch base is located at the bottom of jumper of U-shaped steel wire, the jumper can prevent switch base being pivoted along the direction of triggering.

Abstract: A fastener feeding device for repeatedly feeding fasteners into a striking path of a driving tool includes an uplifting unit having a pivotable member which is pivotable about a torsion axis parallel to the striking path and movable in a feeding direction, a claw member which is biased by a torsion spring to hold a second fastener during an upward movement of the fasteners when the pivotable member is displaced from a lower position to an upper position, and a lifting member which extends transversely. A force transmitting unit is disposed to couple a contact arm of the driving tool to the lifting member to effect the upward movement of the fasteners in response to a rearward displacement of the contact arm when the contact arm is pressed by a targeted object to be fastened.

Abstract: An explosion-driven setting tool includes a setting mechanism (12) driven by a propellant (23), an ignition unit (18) for igniting the propellant (23), a receptacle (15) for receiving a propellant holder (20), a data communication interface (31) for receiving and transmitting data of the propellant holder (20), and a data processing unit (30) for receiving data transmitted by the data communication interface (31) and connected with a display (50) for displaying the propellant supply level (27) of the propellant (23) in the propellant holder having a housing (21) with an interior space (22) for receiving the propellant (23), and a data storage identification unit (40) in which the propellant supply level (27) is stored for being read-out.

Abstract: The nailing machine (1) comprises an air passage (510) allowing communication between a cylinder (200) and a return air chamber (500) in which compressed air for returning a piston (300) to the initial position is accumulated. The air passage (510) is provided with a control valve (520) controlling entry of compressed air into the return air chamber (500) from the cylinder (200). The control valve (520) opens the air passage 510 and allows entry of compressed air into the return air chamber (500) in the case wherein the nailed object produces a small reaction force upon driving the nail, namely when the upward moving distance of the body (100) relative to the push lever (700) is smaller than a predetermined distance. The compressed air that has entered the return air chamber (500) further enters a below-the-piston chamber and serves as air damper, reducing excess energy absorbed by a piston bumper (360).

Abstract: A controller controls a first FET to go on and off based on an input signal of a trigger switch and a push switch and controls a second FET to go on and off based on an input signal of a trigger switch, a push switch, and a operation detection switch. The controller then controls the time that the first FET is on for to be longer than the time the second FET is on for.

Abstract: A trigger structure for switching one shoot mode or repeat shoot mode includes a trigger member and a switching member. The trigger member has a recess defined laterally. Two protrusions are defined in the inner wall of the recess. The switching member has an adjusting member and a trigger plate. Under this arrangement, when the adjusting member is pressed into the recess, the trigger plate is at one position to allow the trigger to shoot in a repeat shoot mode; when the adjusting member is turned to abut against the two protrusions, the trigger plate is at another position to allow the trigger to shoot in a one shoot mode.

Abstract: A nail gun includes a housing, a safety device, a gun barrel, a supporting part, a block, a nosepiece, a linkage, a contacting part, a protrusion, a front linking part, a rear linking part and an arm. The safety device is arranged on the housing. The gun barrel is located at the front end of the housing. The supporting part is arranged inside the housing and has an elastic element. The block is disposed on the gun barrel. The nosepiece and the linkage are slidably arranged on the gun barrel. The contacting part is located at the front end of the nosepiece. The protrusion is applied to against the block. The front linking part is located at the rear end of the nosepiece. The rear linking part detachably connects the front linking part. The arm is located at the rear end of the linkage and against the elastic element.

Abstract: The electric drive tool of the invention is configured such that a lock lever is provided to reliably prevent an erroneous operation of a trigger and an operating mode can be switched by changing an operational sequence of this lock lever and a contact trip.

Abstract: An improved apparatus for nailing or stapling flooring pneumatically, wherein a pneumatic stapler or nailer is provided with a dual trigger single sequential actuation system by which an operator can reach either trigger with his index finger. In one embodiment, the triggers being interconnected. In a second embodiment, each trigger actuates a valve that communicates with a pneumatic piston which drives the staple.

Abstract: A multifunctional nail gun includes a main body, a piston rod, a nail pipe sleeve, a guide rail and a nail feeder, wherein the rear end of the piston rod is positioned in the main body, while the front end extends into the nail pipe sleeve; the nail pipe sleeve is positioned at the front end of the main body; and the guide rail and the upper end of the nail feeder are fixed on the lower surface of the nail pipe sleeve. The multifunctional nail gun also includes a replaceable gun head, a nail pipe cap, an adjusting screw rod, and an adjusting knob.

Abstract: A fastening machine 1 is provided, which prevents the tip member 131 from wear and improve its durability as well as align a material into which a fastener is to be driven. The fastening machine 1 is provided with a housing 2, a handle 2A extended from the housing 2, a nose 3 extended from the housing 2 and comprising an ejecting mouth 6 to fire a fastener 25 and a tip member 131 arranged at the tip of nose 3 in the direction of ejecting the fastener 25. The tip member 131 is characterized by comprising a super-hard material member 19 in the side facing a material into which a fastener is to be driven and in the side opposite to the direction of extending the handle 2A.

Abstract: A driving tool is provided with a nose portion 16 from which a fastener is driven out, and a contact arm 20 which is slidable along the nose portion. The contact arm 20 includes a U-type leading end portion 20a. A leading end of the nose portion 16 enters an inside of a U-type part of the leading end portion 20a of the contact arm 20 when the contact arm 20 slides toward a base end of the nose portion 16. The leading end portion of the nose portion 16 includes a receiving portion 22, 23 by which a load applied to the contact arm is received.

Abstract: A pneumatic nailer for use with a fluid source includes a housing, a cylinder, a first valve assembly, a piston, and a port assembly. The housing defines a storage chamber configured for fluid communication with the fluid source. The cylinder is configured for movement with respect to the housing between a first cylinder position and a second cylinder position. An inner side of the cylinder defines a sleeve chamber and an outer side of the cylinder and the housing defines an actuating chamber therebetween. The first valve assembly is connected to the cylinder and is configured to (i) to allow fluid flow from the sleeve chamber to the actuating chamber and (ii) to prevent fluid flow from the actuating chamber to the sleeve chamber. The piston has a piston head and a driver member extending from the piston head.

Abstract: An apparatus (1) for frame fabrication includes at least one nail gun (15) adapted to fire nails substantially in a selected plane of the frame (2). The nail gun (15) translates vertically and is configured with a control input device (19) activated by an operator which extends substantially across the width of the frame fabrication apparatus.

Abstract: According to one aspect of the application, a tool for driving a fastening element into an underlying surface comprises an energy transmission element for transmitting energy to the fastening element. The energy transmission element is preferably movable between an initial position and a setting position, the energy transmission device being in the initial position before the driving process and in the setting position after the driving process. According to another aspect of the application, the device comprises a mechanical energy accumulator for storing mechanical energy. The energy transmission element is then suitable particularly for transmitting energy from the mechanical energy accumulator to the fastening element.

Abstract: A fastener driver tool powered by a pressurized power source having a supply of compressed fluid includes a magazine associated with the tool for storing and supplying fasteners to a tool nose. A cylinder in the tool has a reciprocating piston associated with a driver blade sequentially engaging fasteners from the magazine as they are fed into tool nose. A control system is configured for directly electrically controlling a flow of compressed fluid for driving the piston.

Abstract: A driver includes a housing in which an accumulator for accumulating compressed air is provided; a trigger provided in the housing; a cylinder stored in the housing; a piston stored to be slidable in the cylinder and driven by the compressed air; and a head valve moving in response to movement of the trigger between an acting position which is distant from the cylinder so that the compressed air acts on the piston and a blocking position which abuts against the cylinder so that the action of the compressed air on the piston is blocked. The cylinder can be arranged at a first position and a second position closer to the head valve than the first position in a state that the head valve moves from the blocking position to the acting position.

Abstract: According to one aspect of the application, a tool for driving a fastening element into an underlying surface comprises an energy transmission element for transmitting energy to the fastening element. The energy transmission element is preferably movable between an initial position and a setting position, the energy transmission element being situated in the initial position before the driving process and in the setting position after the driving process. According to another aspect of the application, the device comprises a mechanical energy accumulator for storing mechanical energy. The energy transmission element is then suitable particularly for transmitting energy from the mechanical energy accumulator to the fastening element.

Abstract: An adjustable depth-of-drive assembly for use with a fastener-driving tool upper probe includes a workpiece contact element carried on the upper probe and having a contact end and an adjustment end, a stop configured for being secured to the upper probe and being moveable between an adjusting position in which the workpiece contact element is movable relative to the upper probe, and a locked position wherein the adjustment end is secured against movement relative to the upper probe, a biasing element associated with the stop and configured for urging the stop and the adjustment end into a selected locked position relative to the upper probe with a biasing force, and at least one camming element carried on the stop for selective camming engagement between the upper probe and the stop by means of a user's manual force to urge the stop into the adjusting position against the biasing element force.

Abstract: A setting tool arrangement includes a stock of a setting tool having one or more sleeve stops. A barrel of a setting tool is slidably receivable in the stock. A sleeve is interactive with the barrel to move to a position allowing the barrel to move when pointed in a direction opposite the direction of gravity and to a position of interference with the one or more sleeve stops thus preventing the barrel from moving when pointed in a direction approximating the direction of gravity.

Abstract: The present application relates to a driving machine. The driving machine has a driver blade for striking a fastener and a nose portion having formed therein an injection passage which slidably guides the driver blade, and into which the fastener is fed to be injected therefrom. An injection hole from which the fastener is injected is specified at a leading end in an injecting direction of the injection passage. The injection hole is defined by a first guide portion and a second guide portion which is movable relative to the first guide portion so as to change a cross section, perpendicular to the injecting direction, of the injection hole. A positioning apparatus is provided to dispose the second guide portion at a plurality of positions relative to the first guide portion.

Abstract: A trigger assembly for switching one shoot mode or repeat shoot mode includes a trigger, a switch, a fixing element, a trigger plate and a torsion spring. When a user wants to switch the shoot modes of the nail gun, the user turns the switch so that the fixing element moves along the curved track of the switch and the fixing element drives the trigger plate to move on a protrusion or on a through hole simultaneously. After the user presses the trigger, the trigger plate is resisted by the protrusion so that the nail gun is in one shoot mode. In addition, when the trigger plate is vibrating on the through hole, the nail gun is in repeat shoot mode.

Abstract: A portable linear fastener driving tool is provided that drive staples, nails, or other linearly driven fasteners. The tool uses a gas spring principle, in which a cylinder filled with compressed gas is used to quickly force a piston through a driving stroke movement, while a driver also drives a fastener into a workpiece. The piston/driver is then moved back to its starting position by use of a rotary-to-linear lifter, and the piston again compresses the gas above the piston, thereby preparing the tool for another driving stroke. The driver has protrusions along its edges that contact the lifter, which lifts the driver during a return stroke. A pivotable latch is controlled to move into either an interfering position or a non-interfering position with respect to the driver protrusions, and acts as a safety device, by preventing the driver from making a full driving stroke at an improper time.

Abstract: A combustion-powered fastener-driving tool includes a combustion-powered power source including a cylinder head and a combustion chamber defined by the cylinder head, a valve sleeve and an upper surface of a reciprocating piston, the valve sleeve reciprocable relative to the cylinder head between a rest position and a pre-firing position. A lockout device is associated with the trigger and has an actuated position configured for preventing the reciprocation of the valve sleeve away from the pre-firing position until the trigger is released.

Abstract: A new and improved trigger control assembly (110) for switching the mode operation of the fastener-driving tool (112) between a sequential mode of operation and a bump firing mode operation. The trigger member (134) is provided with a pair of throughbores (140, 142) for alternating accommodating a pivot pin (144) by which the trigger member (134) may be pivotally mounted upon the fastener-driving tool housing (114) at two different positions whereby the workpiece contacting element (116) of the fastener driving tool (112) will engage the actuation lever (160) of the trigger member (134) at different positions so as to achieve the sequential and bump-firing modes of operation.

Abstract: A device for driving a plurality of fasteners includes a driver assembly having a drive block, a flywheel and a driver mount. The driver mount is configured to move between a first position where the flywheel is removed from the drive block and a second position where the flywheel engages the drive block. The device also includes a work contact element configured to move between an extended position and a depressed position. A blocking arm is connected to the work contact element and configured to move with the work contact element. The blocking arm is positioned in a path of movement of the driver mount when the work contact element is in the extended position. The blocking arm is removed from the path of movement of the driver mount when the work contact element is in the depressed position.

Abstract: A rigid member is configured to move a valve member to separate the valve member from an engaging part when a push lever moves from a lower dead center to an upper dead center. A resilient member is configured to move the valve member to separate the valve member from the engaging part when the push lever moves from the lower dead center to the upper dead center. A switching part selects one of the rigid member and the resilient member to move the valve member to separate the valve member from the engaging part. When the switching part selects the rigid member, a fastener driving operation is performed regardless of an order of a pulling operation and a pressing operation. When the switching part selects the resilient member, the fastener driving operation is performed only when the pulling operation is executed after the pressing operation is executed.

Abstract: A controller 50 has a single-driving mode/continuous-driving mode changeover switch 233 for performing fastener driving operation in a single driving mode or a continuous driving mode. In a case where the single-driving mode/continuous-driving mode changeover switch 233 instructs a single driving mode, the controller 50 causes a driver blade 3a to perform fastener driving operation when both a trigger switch 5 and a push lever switch 22 are switched, by switching operation, from the one switch status to the other switch status (e.g., the ON status). Consequently, fastener driving operation is made possible regardless of sequence of actuation of the trigger switch 5 and the push lever switch 22.

Abstract: A safety catch mechanism, comprising a safety catch that is captively attached to the barrel of a nail gun by matching tracks on both said safety catch and said barrel, facing each other, so that said safety catch is allowed to move only in the forward and backward directions along the barrel of the nail gun in the direction of the motion of the nails, is disclosed. A forward pushing means keeps the forward end of the safety catch beyond the muzzle of the nail gun in the initial secured position. As the safety catch is pushed back, the trigger of the nail gun is activated.

Abstract: A dry fire lockout assembly for a fastener driving device includes a bypass feature. A link is movably mounted to an upper contact arm and interconnected with a lower contact arm when the link is in a first orientation. The link includes a dry fire lockout portion. A dry fire lockout portion of a lifter is configured to engage the dry fire lockout portion of the link, when a supply of fasteners in the fastener driving device is less than a predetermined number of fasteners, and move the link against the bias of the biasing member to a second orientation in which the link is not interconnected with the lower contact arm.

Abstract: A portable linear fastener driving tool is provided that drive staples, nails, or other linearly driven fasteners. The tool uses a gas spring principle, in which a cylinder filled with compressed gas is used to quickly force a piston through a driving stroke movement, while a driver also drives a fastener into a workpiece. The piston/driver is then moved back to its starting position by use of a rotary-to-linear lifter, and the piston again compresses the gas above the piston, thereby preparing the tool for another driving stroke. The driver has protrusions along its edges that contact the lifter, which lifts the driver during a return stroke. A pivotable latch is controlled to move into either an interfering position or a non-interfering position with respect to the driver protrusions, and acts as a safety device, by preventing the driver from making a full driving stroke at an improper time.

Abstract: A combustion powered nail gun includes a combustion sleeve moveable between a sealed position and an open position; a trigger switch having a first hook portion; a safety lever pivotally mounted in a housing and provided with a second hook biasable to be engaged with the first hook portion; and a restriction member connected to and moveable along with the combustion sleeve in a way that when the combustion sleeve is in the open position, the restriction member is stopped at the safety lever in which the second hook portion is engaged with the first hook portion so as to lock the trigger switch, and when the combustion sleeve is in the sealed position, the restriction member is spaced away from the safety lever to enable the second hook portion to be biasable away from the first hook portion so as to unlock the trigger switch.

Abstract: A driving piston 7 is provided so as to be slidable in an up-down direction within a driving cylinder 6 disposed within a body 1. A movable sleeve is fitted on the outer peripheral side of the driving cylinder 6 on the cylinder so as to be movable in the up-down direction. When the movable sleeve 11 is moved upward to abut against a cylinder head 10 provided in the upper direction, a sealed combustion chamber 5 is formed. When combustible mixed gas is explosively burnt within the combustion chamber 5, high-pressure combustion gas acts on the driving piston 7 to thereby impulsively drive the piston, whereby a fastener is driven out by a driver 8 coupled on the lower surface side of the driving piston 7. Elastic members 15 are disposed between the movable sleeve 11 and the cylinder head 10. The elastic members 15 bias the movable sleeve 11 downward.

Abstract: A portable linear fastener driving tool is provided that drive staples, nails, or other linearly driven fasteners. The tool uses a gas spring principle, in which a cylinder filled with compressed gas is used to quickly force a piston through a driving stroke movement, while a driver also drives a fastener into a workpiece. The piston/driver is then moved back to its starting position by use of a rotary-to-linear lifter, and the piston again compresses the gas above the piston, thereby preparing the tool for another driving stroke. The driver has protrusions along its edges that contact the lifter, which lifts the driver during a return stroke. A pivotable latch is controlled to move into either an interfering position or a non-interfering position with respect to the driver protrusions, and acts as a safety device, by preventing the driver from making a full driving stroke at an improper time.

Abstract: A portable linear fastener driving tool is provided that drive staples, nails, or other linearly driven fasteners. The tool uses a gas spring principle, in which a cylinder filled with compressed gas is used to quickly force a piston through a driving stroke movement, while a driver also drives a fastener into a workpiece. The piston/driver is then moved back to its starting position by use of a rotary-to-linear lifter, and the piston again compresses the gas above the piston, thereby preparing the tool for another driving stroke. The driver has protrusions along its edges that contact the lifter, which lifts the driver during a return stroke. A pivotable latch is controlled to move into either an interfering position or a non-interfering position with respect to the driver protrusions, and acts as a safety device, by preventing the driver from making a full driving stroke at an improper time.

Abstract: Immediately after a clinch lever causes a clinch link to clinch the leg of a staple which penetrates sheets of paper to be stapled, a pressure by the clinch lever with respect to the clincher link is temporarily reduced by a pressure reducing unit. Therefore, a clincher moves down in a state where the clincher still receives the press-contacting force from a driver plate. Accordingly, the looseness occurs between the driver plate and the clincher link. A fixing plate becomes easy to draw out as much as the looseness. If the fixing plate is set to be drawn out at this timing, it can be simply drawn out to be moved to the initial position.

Abstract: The pole comprises a securing end, with device securing means and the device actuating means, a gripping end to be gripped by an operator and telecontrolling means for telecontrolling the actuating means. The actuating means are arranged in the device securing means and are directly controlled by the securing end of the pole and thus telecontrolled by the pole and its gripping end under the action of a thrust of the pole towards the support material. The device actuating means comprise safety means arranged to avoid by gravity the control of the actuating means by the securing end of the pole when the spatial position of the pole is inappropriate. The invention also relates to an anchoring device provided with the same safety means.

Abstract: According to an aspect of the present invention, there is provided a nailing machine, including: a drive unit that drives a blade to strike a nail; a blade guide that includes a guide groove to guide the blade; a guide plate that is attached on the blade guide to cover the guide groove; and a magazine that is held with respect to the blade guide and that feeds a nail to the guide groove, wherein the nailing machine further includes a blade fixing unit that limits a movement of the blade when the guide plate is detached.

Abstract: A portable linear fastener driving tool is provided that drive staples, nails, or other linearly driven fasteners. The tool uses a gas spring principle, in which a cylinder filled with compressed gas is used to quickly force a piston through a driving stroke movement, while a driver also drives a fastener into a workpiece. The piston/driver is then moved back to its starting position by use of a rotary-to-linear lifter, and the piston again compresses the gas above the piston, thereby preparing the tool for another driving stroke. The driver has protrusions along its edges that contact the lifter, which lifts the driver during a return stroke. A pivotable latch is controlled to move into either an interfering position or a non-interfering position with respect to the driver protrusions, and acts as a safety device, by preventing the driver from making a full driving stroke at an improper time.

Abstract: A locking mechanism for a nail gun includes a side slot formed on a bottom side of a gun body and a nail supplying slot connected to a drive track of the nail gun. A stopper element is formed on a side of a slider element corresponding to the side slot. The gun also includes a magazine in which a nail pusher facing the nail supplying slot and a lockout element facing the side slot are formed. The nail pusher has an ear portion. The lockout element includes a pushing arm and a moveable guide slot capping with the ear portion to restrict the sliding movement of the lockout element on the nail pusher. As the pushing arm extends towards the corresponding end of the nail supplying slot, a nail is pushed into the drive track to shoot. The lockout element enters into the side slot to block the stopper element when the nail is exhausted, so as to enhance the shooting blocking effect of the nail gun.

Abstract: A fastener driving tool is capable of not only linearly driving but also rotationally fastening a fastener into a workpiece P. The fastener driving tool includes a housing 2, a nose portion 40 formed with an injection passage 40a through which a fastener 41 is driven, a magazine 4 accommodating fasteners 41 and supplying a fastener 41 to the nose portion 40, a push lever 5 movable relative to the housing 2 upon depression against the workpiece P, combustion chamber frames 12, 22 movable in the housing 2 in accordance with the movement of the push lever 5, and first and second cylinders 7, 8 fixed to the housing 2. First and second pistons 71, 81 are movably disposed in the first and second cylinders 7,8, respectively, and a bit 9 extends from the first piston 71. A rod 14 formed with a rack 14A extends from the second piston 72. The rack 14A is engageable with a motion conversion mechanism 6 for converting a linear motion of the rod 14 into rotational motion of the bit 9.

Abstract: In a fastener-driving tool equipped with a fastener magazine, and a power source including a reciprocating driver blade for driving fasteners obtained from the magazine into a workpiece, and a reciprocating valve sleeve actuated by a cage, a nosepiece is provided, including a nosepiece body configured for attachment at one end to the fastener tool and defining a fastener channel constructed and arranged for receiving the driver blade and the fasteners sequentially fed by the magazine, the fastener channel having a fastener outlet. A unitary actuator reciprocates relative to the nosepiece body, has a first end contacting the workpiece, and a second end engaging the cage.