Abstract: A fastener-driving tool includes a combustion power source configured for driving a driver blade linearly towards a workpiece, and an electrical power source associated with the combustion power source for rotationally driving the driver blade upon completion of the linear travel, both power sources being disposed in the tool.

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: A powder actuated tool with a safety trigger lock device has a handle assembly, a barrel assembly and a switch. The handle assembly has a trigger. The trigger is mounted pivotally in the handle assembly and has an actuating edge. The barrel assembly is mounted in the handle assembly and has a firing mechanism and a sear corresponding to the trigger. The switch has an actuating rod mounted rotatably in a handle assembly and has a surface and a recess. The recess is defined in the surface of the actuating rod and selectively receives the actuating edge of the trigger. Users can turn the switch to make the recess receives the actuating edge of the trigger to allow the trigger pivoting or to make the surface of the actuating rod abut the actuating edge of the trigger to keep the trigger from pivoting.

Abstract: A explosive device is disclosed for collapsing an expansion-fit metal tube from within a hole of a metal plate of a boiler or the like. The device includes a connecting rod inserted into the tube and extending outwardly from top and bottom ends of the tube. The portion of the connecting rod extending out of the top end of the tube is encapsulated by a blast chamber containing an explosive charge. The portion of the connecting rod extending out of the bottom end of the tube is secured via a retaining plate held by a washer and nut threaded to the connecting rod.

Abstract: A setting tool for driving fastening elements in a constructional component includes a setting mechanism located in the tool housing (21) and including a drive piston (7) for driving a fastening element (6) in the constructional component (1), a reading device (10) for acquiring information containing in a coding (8) provided on a magazine strip (27) containing the fastening element (6), and control device (15) communicating with the reading device (10) for adjusting setting parameters for a setting process dependent on data acquired by the reading device (10) upon reading out the coding (8).

Abstract: A setting tool for driving fastening elements in a constructional component includes a piston guide (11) adjoining the tool combustion chamber (16), a setting piston (20) arranged in the hollow space (12) of the piston guide (12) for an axial displacement therein, a piston stopping element (30) for the setting piston (20) and arranged in an end region (17) of the hollow space (12) remote from the combustion chamber (16), and a device (40) for axially displacing the piston stopping element (30) in the hollow space (12).

Abstract: A combustion-operated setting tool for driving fastening elements in a constructional component includes a device (30) for adjusting setting energy applied to a setting piston (15) axially displaceable in a guide space (4) of a piston guide (13). The adjusting device (30) has a separation member (31) adjustably arranged between the receptacle (18) and the guide space (14) of the piston guide (13) and dividing the combustion chamber (20) in a first sub-chamber (21) arranged between the receptacle (18) and the separation member (31) and a second sub-chamber (22) arranged between the separation member (31) and the guide space (14) of the piston guide (13), the separation member (31) having a plurality of through-openings (34, 35) for controlling flow of the combustion gases into the guide space (14) of the piston guide (13), with an active opening cross-section of at least a portion of the through-openings (34, 35) changing dependent on an adjustable position of the separation member (31).

Abstract: Disclosed herein is a powder actuated setting tool piston retainer arrangement which includes a housing and firing mechanism and a piston having a piston retaining ring in operable communication with the housing and firing mechanism. Further the arrangement includes a barrel within which the piston is slidably disposable. A cantilevered retainer is disposed at the barrel, the retainer being pivotally articulated with the barrel such that the retaining ring is contactable thereby to retain the piston in a selected position. Further disclosed herein is a method for retaining a piston of a powder actuated setting tool in position. The method includes urging a cantilevered retainer radially inwardly of a barrel of the setting tool for the purpose of contacting a retaining ring of the piston of the setting tool. Such contact frictionally retains the piston in a selected position.

Abstract: A combustion-engined setting tool for driving fastening elements in a constructional component end including a combustion chamber (13) for combusting a gas mixture, an inlet/outlet device (40) for opening the combustion chamber (13) in its first position and for closing the combustion chamber (13) in its second position and having a valve element for reversibly displacing the inlet/outlet device (40) between its first and second positions, a locking element (37) for locking the valve element of the inlet/outlet device (40) in the second position of the device, a trigger (30) for actuating the locking element (37), a release switch (22) for triggering ignition in the combustion chamber (13), an electronic control unit (20) for controlling start of the ignition in the combustion chamber (13), and an initialization switch connected with the control unit (20), the control unit (20) initiating the ignition in the combustion chamber (13) when a time period between switching-on of the initialization switch and switc

Abstract: A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.

Abstract: A combustion power tool having a first combustion chamber, a second combustion chamber, an igniter, a partition, and a driving mechanism. Flammable gas is introduced or charged into the first and second combustion chamber. The igniter is disposed in the first combustion chamber. The partition separates the first combustion chamber from the second combustion chamber. Communication holes are formed in the partition at different angles with respect to the longitudinal direction of the first combustion chamber. The communication holes communicate the first combustion chamber with the second combustion chamber. The driving mechanism performs a predetermined processing work by utilizing an explosive combustion pressure.

Abstract: Disclosed herein is a method that relates to resetting and firing a powder actuated setting tool. The method includes resetting the tool by torsionally urging a portion of a firing pin into axial alignment with a finger of a barrel of the tool and compressing the barrel of the tool toward a housing of the tool. The resetting further includes the finger urging the portion of the firing pin to a ready position in response to the compression of the barrel. The method further includes firing the tool by rotating a rotator and the firing pin to a position where the portion of the firing pin is unsupported by the finger.

Abstract: An insert seal for an adapter connectable to a fuel cell which is engageable upon a combustion tool fuel metering valve, the fuel cell having a stem and the metering valve having a nipple, includes a body defining a central passageway and having a first end sealable on the stem and a second end sealable on the nipple, a flange portion affixed to the second end, being in fluid communication with the passageway and having a larger diameter than the body. The fuel cell adapter is configured for connection to the fuel cell and is engageable upon the combustion tool fuel metering valve, has an adapter body with a base configured for engagement upon the fuel cell and a nozzle connected to the base, the adapter body defining a chamber configured for accommodating the stem and the nipple, the insert seal being accommodated in the chamber.

Abstract: A combustion-type power tool includes a cylinder and a combustion chamber frame disposed to surround the cylinder and movable along the cylinder. A partition wall divides an inner space of an outer frame into a first space in which the cylinder and the combustion chamber frame are disposed and a second space in which a gas cartridge cylinder is disposed and has a through-hole through which the first space and the second space are in fluid communication with each other. A plurality of ribs is formed on an outer surface of the cylinder for regulating an exhaust gas flow generated by combustion of a gaseous mixture in the combustion chamber. The ribs enable exhaust gas discharged from the combustion chamber to be directed away from the through-hole, thereby enabling the gas cartridge cylinder to be maintained at a substantially constant temperature.

Abstract: A driver blade for use in a combustion-powered fastener-driving tool includes an elongate tubular body having a combustion end and a driving end, the combustion end being configured for attachment to a piston, and the driving end having a substantially solid cross-section. The tubular body is in fluid communication with a tool combustion chamber.

Abstract: A combustion type power tool providing enhanced workability and improved material yieldability. A combustion chamber frame is slidably movably disposed in a housing. A push lever is slidably movably supported to a nose extending from a lower end portion of the housing, and is abuttable on a workpiece. The combustion chamber frame and the push lever are associated with each other by a connection unit including arm sections and a connector section. A compression coil spring for biasing the push lever downwardly is interposed between the connector section and a cylinder disposed in the housing. The housing covers the entire arm sections, the connector section and the spring, so that these components are not directly accessible from an outside.

Abstract: A combustion-engined setting tool for driving fastening elements in constructional components includes a combustion chamber (14) for combusting therein a full gas-oxidant mixture, at least one guide element (20) arranged coaxially with a longitudinal axis (34) of the combustion chamber (14) for supporting axially displaceable wall (17) of the combustion chamber (14) for an axial displacement along the guide element (20) which is pivotally supported in a drag bearing (22), and a guide cylinder (12) adjoining the combustion chamber (14) in which a setting piston (11) is arranged for an axial displacement therein.

Abstract: A housing for a power tool includes a primary handle configured for accommodating a primary hand used to control the operation of the tool, the handle having a first end closer to a power source of the tool, and a second end distal of the power source, a secondary handle configured for accommodating a secondary hand, being associated with the distal end and defining a distal extremity of the tool offsetting the power source.

Abstract: The present invention is directed to a combustion powered setting device for driving fastening elements such as nails, bolts and pins into a receiving material, with a fuel source, and a fuel line (12.1, 12.2) from the fuel source (11) to a combustion chamber (13) and with at least one metering device (20) for fuel which is arranged in the fuel line (12.1, 12.2) between the fuel source and the combustion chamber. In order to improve setting devices of this type, the metering device (20) has an adjusting device (30) for the metered volume, which adjusting device (30) responds to the fuel pressure.

Abstract: A setting device (10) drives fastening elements into a receiving material and includes a housing (11) with a piston guide (13) arranged in the housing (11) and with a hollow space (14) in which a setting piston (15) is displaceably mounted. A bolt guide (16) is connected to the piston guide (13) by an interface (17). The setting device further has a piston restoring device (20) with an adjusting member (21) which engages in the piston guide (13) in a work position and is moved out of the piston guide (13) into a release position (24). Further, there is a securing element (30), with the adjusting member (21) being held in the work position (23) in a first position (33) of the securing element (30) and the adjusting member (21) being released to move into the release position (24) in the second position (34) of the securing element (30).

Abstract: A firing mechanism of an explosively actuated tool for driving a fastener into a substrate includes a cocking rod and sear for entraining the firing pin with the firing pin being releasable on cocking by rotation of the sear. The cocking rod and sear form a structure subject to an axial and rotational bias by a coil spring anchored at one end to the structure and at the opposite end to a mounting which during assembly of the mechanism is rotated to apply torsional loading to the spring and is then locked into a housing of the mechanism in an angular orientation in which torsional loading is maintained in the spring.

Abstract: An explosively actuated tool for driving a fastener into a substrate is of the type in which the tool is mounted to the end of a pole-like handle to permit manipulation and actuation of the tool from a remote position wherein actuation of the tool occurs by pushing the forward end of a barrel of the tool against the substrate using the handle and then pushing on the handle which loads and then releases the firing mechanism of the tool. A lock device is incorporated to prevent “air firing” of the tool by pushing the handle without the forward end of the barrel being pressed against the substrate. The lock device has a lock member which cooperates with the firing pin or firing pin spring support of the firing mechanism to lock one or other of those components unless the lock member is released by a prior displacement caused by retraction of the barrel when its forward end is pressed against the substrate.

Abstract: An explosion-operated power tool including a housing (1) having a cylindrical cavity (5) and a piston chamber (2) for receiving a drive piston (3) and communicating with the cavity (5), a breech bottom (8) located opposite the cavity (5) and fixedly secured at a predetermined distance from the housing (1), and a sealing sleeve (12) located in the cavity (5) of the housing (1) and displaceable axially away from the breech bottom (8) and toward the breech bottom (8) for enabling, respectively, a sidewise feeding of a catridge (10) for positioning the catridge between the breech bottom and the sealing sleeve (12) and for securing the catridge between the breech bottom (8) and the sealing sleeve (12).

Abstract: A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.

Abstract: The present invention relates to a propellant container (2) for an internal combustion operated setting tool (10) having a housing (21) and a housing internal space (22) for receiving a propellant (23). A portable electrical power source (40) such as a battery or a battery pack is arranged on the propellant container (2). The invention further relates to an internal combustion operated setting tool (10) having electrical consumers (30), a setting mechanism (12) that can be driven by a propellant (23) and a receptacle (15) for a propellant container (20). Contact elements (31, 32) for contacting an electrical power source arranged on the propellant container (20) are arranged on the receptacle for the propellant container (20).

Abstract: A combustion type power tool capable of restraining reduction in output power due to lowering of combustion efficiency. A specific space within a combustion-chamber frame is enlarged. The specific space contains a specific region where high turbulence occurs in a combustion chamber at which a fuel is ignited. The enlargement is made by providing an enlarged distance between a rotation shaft of the fan and an inner wall of the combustion-chamber frame. When the turbulent combustion occurring at the specific region is expanded in the combustion chamber, flame propagation contour of the turbulent combustion reaches the wall of the combustion-chamber frame and ribs at a delayed timing. Therefore, after the turbulent combustion is sufficiently promoted, the flame reaches the combustion-chamber frame and the ribs. In other words, the flame does not reach the combustion-chamber frame and the ribs at the initial stage of turbulent combustion.

Abstract: An explosive powder charge-operated setting tool for driving fastening elements in a constructional component includes a propellant-driven setting mechanism, an ignition element (23) for igniting a propellant (71) received in the propellant receptacle (18) of the setting mechanism, and a transporting device (30) for displacing a propellant magazine in a guide channel (22) and including elements operable by the ignition element (23) for displacing the transporting device from a first position in which the transportation of propellants is prevented, into a second position in which at least partial transportation of the propellants is possible.

Abstract: A fastener driving tool comprises a tool body, a muzzle extending forwardly from the tool body and being displaceable into a ready-to-fire position, a magazine for holding fasteners coupled to the muzzle, and a follower within the magazine that biases the fasteners. The follower has a blocking surface that blocks the muzzle during fastener-empty condition and prevents the muzzle from displacing into ready-to-fire position.

Abstract: An explosively actuated tool for driving a fastener into a substrate is mountable to the end of a pole-like handle to permit manipulation and actuation of the tool from a remote position. Actuation of the tool occurs by pushing the forward end of a barrel of the tool against the substrate using the handle and then pushing forwardly the handle which loads and then releases a tiring mechanism of the tool to fire the charge. The tool has a safety lock device for inhibiting loading of the firing mechanism sufficiently to initiate firing unless the tool is orientated upwardly into a vertical or near vertical orientation.

Abstract: A powder driven tool includes a housing including a powder cartridge and a piston within a barrel. A guide member attaches to the barrel and cradles a support device. The guide member includes a wall portion having a thickness greater than other portions of the guide member. Ignition of the powder cartridge causes the piston to move within the barrel and drive the support device. The wall portion resists barrel climb as the support device is driven into an object.

Abstract: An ignition device for igniting a foil cartridge (10) in an explosion-operated power tool includes an electrical insulator (24) arranged in the support (8), a pin-shaped electrode (25) located in the electrical insulator and having a tip (30) that communicates with surrounding environment via a channel (32) formed in the electrical insulator (24) and extending in a longitudinal direction of the pin-shaped electrode (25) and an electrically conducting annular electrode (27) supported on the support (8) in a region of the channel (32) and tightly surrounding the insulator (24), leaving the channel (32) free.

Abstract: An electrical hand-held power tool for at least partially percussive driving of a tool (1) along a striking axis (A) and including a striking mechanism (2) having a striker (3) for generating striking forces on the anterior arranged tool (1) and a housing (5) enclosing the striking mechanism (2) and having a handle (6) affixed thereto, with the striker (3) being formed as a high-energy piezo actor connected with a voltage pulse generating unit (7), and rearwardly affixed to the housing (5).

Abstract: The present invention relates to a combustion-engined setting tool for driving fastening elements, such as nails, bolts, pins in a constructional component, with a fuel guide (12) extending from a fuel source (11) to a combustion chamber (13) and with at least on electronically controlled valve (24) which is arranged in the fuel guide (12) between the fuel source (11) and the combustion chamber (13), and with a control unit (20), including at least one actuation means (25) with which the valve (24) is opened for a predetermined time period. For improving, it is proposed to arranged in the fuel guide (12) a storage chamber (21) between the electronically controlled valve (24) and the combustion chamber (13). The storage chamber becomes filled with fuel through the electronically controlled valve already before the setting tool is pressed against a constructional component, enabling rapid, following one after another, setting processes.

Abstract: A nail gun includes a body which is provided with an upright slot and a horizontal slot. The upright slot is used to accommodate an explosive array while the horizontal slot is used to disposed a trigger mechanism for discharging nails by the force of the explosive array. The trigger mechanism has a link rod, an actuation rod, a nail firing tube, and a recovery spring. The link rod is triggered by the nail firing tube in motion to bring about the stretching of the recovery spring and the swiveling of the actuation rod such that a retaining hook of the actuation rod is retained in one of a series of retaining slots of the explosive array. The explosive array is forced to move upward by the retaining hook of the actuation rod at such time when the link rod is relieved of the pressure of the nail firing tube.

Abstract: A nailing machine, in which a part constituting a nose is changed so as to increase the service life of a driver blade for driving a nail. The nailing machine includes a nose having a nose hole in which the nail is supplied, and the driver blade made of metal. At least a part of a surface of the nose hole to be in contact with a front surface of the driver blade is provided with a protective body. The protective body is made of an organic material or a composite material of an organic material and a metal material. Due to this, direct mutual contact of the metal parts is prevented.

Abstract: A fuel cell adapter system for a combustion tool which includes a housing enclosing a fuel metering valve. The fuel cell is provided with an adapter having a generally cylindrical nozzle and an enlarged base configured for engagement upon the fuel cell. The nozzle has a lobed free end and defines a passageway. A frangible membrane is provided for blocking the passageway. The latch is disposed in the housing for releasably securing the adapter in fluid communication with the fuel metering valve. The latch includes a latch body having at least one locking tang movable between a closed position and an open position, and a release member for moving the locking tang to release the engagement with the adapter and permitting withdrawal of said fuel cell from said tool. A modified latch receives the adapter of the fuel cell in a push-and-twist motion to retain it in position.

Abstract: A fastener driving device including a positioning mechanism for positioning a nail into an opening in a workpiece. The positioning mechanism includes an opening locating structure movably connected to the movable assembly of the contact trip assembly and adapted to extend into the opening so as to align the nosepiece with respect to the opening. The opening locating structure is movable relative the movable assembly of the contact trip assembly between an extended position and a retracted position and biased toward the extended position by a first biasing spring to facilitate locating of the opening, and movable to the retracted position when the opening locating structure is pressed against a workpiece. The positioning mechanism further includes a guiding structure movably connected to the nosepiece structure, the guiding structure being biased by a spring to extend forwardly to guide the fastener in a driving track inside the nosepiece.

Abstract: An auxiliary elastomeric sealing adaptor is disclosed which effectively provides a high degree of sealing, and prevents fuel leakage, between the metering valve stem and the tool stem components of a fuel-cell powered fastener-driving tool despite bending, tilting, or pivotal movements of the metering valve stem attendant a fastener-firing operation. In addition, the incorporation of the elastomeric adaptor between the stem components reduces the need for high tolerance manufacturing techniques and also enhances the service lives of the stem components. The sealing adaptor is mounted upon the free or distal end portion of the metering valve stem and is seated within a counterbored region of the fastener-driving tool stem.

Abstract: An expanding gas-operated setting tool for driving fastening elements, such as nails, bolts, pins, etc., into a substrate, includes a housing (11), a setting mechanism (15), located in the housing (11) for driving the fastening element into a substrate, electrical consumers at the setting tool (10), the source of power comprising a fuel cell (31), which is mounted on the setting tool for supplying power to electronic components of the setting tool and which can be operated with fuel in a fuel reservoir (20, 30), which is mounted on the setting tool (10), and with oxygen.

Abstract: A fluid-fuel operated setting tool for driving in fastening elements includes a housing (11) with a combustion chamber provided therein for combusting fluid fuel, with a released energy of combustion of the fluid being used for driving in a fastening element, and a reservoir (20, 20′, 20″) for storing the fluid fuel and attached to the tool housing and having, in a direction parallel to its longitudinal axis (22), a jacket (21) shape and habit of which are defined by inscribed and circumscribing envelope circles (211, 212), with the cricumscribing envelope circle having a size of its circumference greater than the size of the circumference of the insribed envelope circle.

Abstract: An arm member is provided for protection of a power source and for facilitating storage of a power tool. In a closed position, the arm member is configured for partially encircling a portion of the power source and re-directing an impact directed towards that portion away from the power source. In an open position, the arm member is configured for engaging a projection or structure to enable hanging and/or other storage of the power tool.

Abstract: A fastener driving tool comprises a tool body, a muzzle extending forwardly from the tool body and being displaceable into a ready-to-fire position, a magazine for holding fasteners coupled to the muzzle, and a follower within the magazine that biases the fasteners. The follower has a blocking surface that blocks the muzzle during fastener-empty condition and prevents the muzzle from displacing into ready-to-fire position.

Abstract: A setting tool is formed of a housing (1) and an axially displaceable bolt guide (8) situated in and extending out of the leading end of the housing. A protective cap (5) is detachably arranged on the leading end region of the housing (1) and prevents abrasion of the housing (1) under conditions prevailing at the construction site and thus prevents wear on the housing (1).

Abstract: A power actuated tool (20) for driving a fastener into a substrate such as steel or concrete, comprises a housing (2), a barrel assembly (5) mounted to the housing, and a piston displaceable within the barrel assembly upon firing of the tool to drive a fastener from the forward end (25) of the barrel into the substrate, at least a forward end of the barrel assembly being mounted for axial movement relative to the housing whereby firing of the tool requires the forward end (25) of the barrel assembly to be pressed against the substrate to cause retraction of the forward end relative to the tool housing. A telescope shroud (21) surrounds the forward end of the barrel assembly to at least partially suppress noise emission resulting from firing of the tool.

Abstract: A fuel cell adapter system for a combustion tool which includes a housing enclosing a fuel metering valve. The fuel cell is provided with an adapter having a generally cylindrical nozzle and a base configured for engagement upon the fuel cell. The nozzle has a free end and defines a passageway. A frangible membrane is provided for blocking the passageway. The adapter also has a gripping formation that is configured for engagement with a latch, so that the adapter is accommodated in the housing in fluid communication with the fuel metering valve. The latch is disposed in the housing for releasably securing the adapter in fluid communication with the fuel metering valve. The latch includes a latch body having at least one locking tang movable between a closed position and an open position, and a release member for moving the locking tang to release said engagement with the adapter and permitting withdrawal of said fuel cell from said tool.

Abstract: A combustion-powered tool having a workpiece contacting element movable relative to the tool as the tool is depressed prior to firing includes a spark unit having a high voltage spark supply for providing an ignition spark, a printed circuit board having a first portion configured for receiving and being electrically connected to the high voltage spark supply, and a second portion configured for receiving and being electrically connected to both an actuator switch and a trigger switch, the switches and the spark supply being electrically connected so that to enable firing, the workpiece contact element actuates the actuator switch, which then enables activation of the trigger switch. A unitary actuator has a fixed end, a movable end engageable by movement of the workpiece contact element and a middle portion for engaging the actuator switch upon movement of the movable end caused by depression of the tool against a workpiece.

Abstract: An auxiliary elastomeric sealing adaptor is disclosed which effectively provides a high degree of sealing, and prevents fuel leakage, between the metering valve stem and the tool stem components of a fuel-cell powered fastener-driving tool despite bending, tilting, or pivotal movements of the metering valve stem attendant a fastener-firing operation. In addition, the incorporation of the elastomeric adaptor between the stem components reduces the need for high tolerance manufacturing techniques and also enhances the service lives of the stem components. The sealing adaptor is mounted upon the free or distal end portion of the metering valve stem and is seated within a counterbored region of the fastener-driving tool stem.

Abstract: A compression triggered powder driven fastening tool having a firing mechanism with a sleeve axially movable between first and second positions, a lever cam coupled to the sleeve or some other reciprocating portion of the tool and movable therewith, an indexing lever pivotally coupled to the tool, the indexing lever having a magazine strip engagement portion extending into a magazine channel of the tool, the indexing lever having a cam follower portion engaged with the lever cam, the magazine strip engagement portion of the indexing lever moves between first and second positions in the magazine channel as the sleeve moves with the reciprocating portion of the tool to which it is coupled, the magazine engagement portion of the indexing lever indexes a magazine strip through a channel of the tool.

Abstract: A power actuated tool for driving a fastener such as a pin into a substrate such as steel or concrete comprises a driving piston (6) which is driven forwardly within the barrel (4) of the tool upon firing and is automatically reset in response to cocking of the tool prior to the subsequent firing. Resetting of the piston takes place by thrusting the piston (6) rearwardly during cocking by means of a spring-loaded gripper device (14) energized during cocking.

Abstract: A portable, internal combustion-engined setting tool for driving in fastening elements and including a drive piston (8), 34 a combustion chamber 1 having an inlet/outlet valve 34, located adjacent to the piston (8) and in which a fuel gas mixture is ignited for generating pressure for driving the piston (8), a locking/unlocking device (54) for closing and opening the outlet valve (34), respectively, a sensing device (55) for retaining the locking/unlocking device (54) in a locking position and having a member that is pressed against a circumference of the piston rod (10) for retaining the locking/unlocking device (54) in the locking position, and an element for positioning the member relative to the piston rod 10, when the piston (8) is not in its initial position, so that the member does not apply to the locking/unlocking device (54) a force acting in a locking direction of the locking/unlocking device.