Abstract: A combustion-powered fastener-driving tool includes a combustion-powered power source, a workpiece contact element reciprocable relative to the power source between a rest position and a firing position, a control system operationally associated with the power source, a trigger connected to the control system providing operator interface with the control system. The control system is configured so that an operator may select between a sequential firing mode in which the trigger must be released between firings, and a repetitive cycle mode in which the trigger is continually depressed between firings. The trigger is connected to the control system so that at least one of the frequency and duration of pulling of the trigger converts the operating mode from the sequential mode to the repetitive cycle mode.

Abstract: The present invention relates to a combustion-engined setting tool for driving fastening elements such as nails, bolts, pins and the like in a constructional component and including a fuel source (11), a fuel conduit (12), from the fuel source (11) to the combustion chamber (13), at least one metering device (30) arranged in the fuel conduit (12) between the fuel source (11) and the combustion chamber (13). The setting tool further includes a control device (20) for operating the metering device. The metering device (30) is formed for metering out fuel in form of a n-number of discrete separate portions, with a volume of separate portions being preset and remaining constant.

Abstract: A magazine for a hand-held setting tool for driving in fastening elements includes a guide housing (21), a spring-biased displacement element (24) for displacing fastening element (40), and an elongate guide member (26) having a guide region (27) that in a closing position (33) of the guide member (26) projects into the guide chamber (22), which is formed in the guide housing (21) for retaining the fastening elements in the guide channel (22), and that in a release position (34) of the guide member (26) is withdrawn from the guide chamber (22) to provide for displacement of at least one fastening element (40), with the guide member (26) having two support sections (28, 29) spaced from each other in a longitudinal direction of the guide member (26) and cooperating, respectively, with two control cams (30, 31) fixedly secured on the guide housing (21) for displacing the guide region (27) from the locking position (33) to the release position (34) and from release position (34) to the locking position.

Abstract: A suspension system for a motor of a combustion-powered hand tool includes a motor retaining ring defining a space for accepting the motor, an outer ring radially spaced from the retaining ring and configured for attachment to a cylinder head of a combustion chamber, and at least one resilient suspension element configured for dampening vibrations between a motor support and a tool frame, and having a plurality of resilient beams connecting the retaining ring and the outer ring.

Abstract: The nailing machine with safety mechanism is located between fastener and nailing part of nailing machine. The safety mechanism includes an adjustable shelf, which shifts recurrently within a limited range. The first end of adjustable shelf is linked to the fastener, and second end extends towards nailing part. One side of retainer is normally protruded from exterior of nailing part, and the other side extends towards adjustable shelf. The revolving controller is provided with a pin joint and a revolving end. The revolving end will limit and fix simultaneously adjustable shelf and retainer, or, in the case of second swinging angle, the revolving end will release adjustable shelf and retainer. When an idle nailing machine is firstly withheld by a fastener, the adjustable shelf will shift outwards, and then drive revolving end of revolving controller to separate from the adjustable shelf.

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 combustion-engined setting tool for driving fasting elements such as nails, bolts, pins in an object, includes a combustion chamber (13), a fuel source (11), a fuel conduit (12) connecting the fuel source (11) with combustion chamber (13) for feeding fuel thereinto, and at least one metering device (30) for metering a predetermined amount of fuel for effecting a setting process and having at least one variable volume metering chamber (31), and a displaceable piston body (34) for a pulsed ejection of fuel from the metering chamber (31).

Abstract: A combustion-powered tool has an engine and a heating system, where the tool receives and preheats a fuel cell. The fuel cell has a receiving portion for a heat transfer element which is associated with the engine. The heat transfer element is configured for engaging the fuel cell to conduct heat from the engine to the fuel cell.

Abstract: In the apparatus, under the action of the explosion of a mixture of air and gas in a chamber closed by a chamber sleeve tube and a cage when the apparatus is pressed against something, a piston is propelled in a cylinder to drive an element. The chamber sleeve tube and the cylinder are arranged in such a way that, as the apparatus is closed, the chamber sleeve tube comes into abutment against the cylinder. The invention can well be applied to nail guns and other staplers.

Abstract: A combustion-type nail driver uses a motor for driving a fan. A motor holder formed from plastic accommodates the motor. A cylinder head has a motor holder receiving portion in which the motor holder is slidably movably disposed. A coil spring has one end secured to the motor holder and another end secured to the cylinder head to thereby support the motor holder. Initial acceleration applied to the motor when combustion occurs can be suppressed and impact imparted upon the motor can also be suppressed by friction between the outer periphery of the motor holder and the inner periphery of the motor holder receiving portion. A heat shielding plate is interposed between the lower end surface of the motor and the cylinder head in order to prevent hot air combustion gas from entering into the motor.

Abstract: A motor mount for suspending a fan motor in a combustion-powered tool includes an inner ring for securing to the motor, an outer ring that is secured to a portion of the tool, and a web portion disposed between and connecting the inner ring and outer ring. The inner ring, outer ring, and web portion are formed as a unitary piece. Preferably, the mount is formed of a thermoplastic polyester elastomer.

Abstract: A power source (10) for providing energy to drive a mechanical device including a receiving chamber (11) and discrete propellant charges (23) for selective detonation whereby gases generated by the selective detonation expand into the receiving chamber (11) wherein said receiving chamber includes a reactive closure (15) which dynamically responds to pressure changes in the receiving chamber and wherein said power source further includes a linkage (16) associated with the reactive closure for transmitting energy from the dynamic response of the reactive closure to the mechanical device.

Abstract: A combustion-powered nail gun drives nails into a workpiece when both a head switch and a trigger switch are turned ON while a safety switch is turned ON. The nail driving operation cannot be performed if the safety switch is not ON even if both the head switch and the trigger switch are ON. The head switch is turned ON when a push lever is urged against the workpiece. Fuel/air mixture in a combustion chamber is ignited when the head switch and the trigger switch are turned ON irrespective of an order in which the head switch and the trigger switch are turned ON, whereby “successive-shot driving” can be performed in which the trigger switch is maintained in its ON position while successively driving a plurality of nails at different locations of the workpiece by repeatedly pushing and releasing the push lever toward and away from the workpiece.

Abstract: The invention describes a combustion—operated working tool, in particular a setting tool for fastening elements, having a guide cylinder (5) axially displaceable relative to the device housing (1); a piston (9) displaceably mounted in the guide cylinder (6); a housing—integral stop (8), which projects into the guide cylinder (5) to delimit an engagement part of the piston (9) in the direction of advance of the piston (6), when the guide cylinder (5) is shifted in the direction of advance of the piston (6); and an elastic adjusting element (21–23), which is tensioned upon moving the guide cylinder (5) into the device housing (1) and by virtue of which an engagement part (28, 31) can be driven for carrying the piston (9) opposite to the direction of advance of the piston (6), after extension of the guide cylinder (5) out of the device housing (1).

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 power-operated setting tool includes a setting piston (15) for driving in fastening elements in constructional components, and a resetting device (30) having a lever-shaped resetting member (31) for returning the setting piston (15) from its end position (26) into its initial position (25), a bearing section (43) for supporting the lever-shaped resetting member (31), and a damping member (43) for damping the lever-shaped resetting member (31) upon the resetting member (31) impacting the bearing section (43), with the damping member (44) having a bearing surface (46) which the rear surface (36) of the lever-shaped resetting member (31) abuts and which has a profile substantially corresponding to a profile of the rear surface (36) of the lever-shaped resetting member (31).

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: An explosion-power operated setting tool for driving fastening elements in a structural component includes a setting piston (15) displaceably arranged in the guide chamber (14) of a piston guide (13) arranged, at least partially, in the tool housing (11), a resetting device (30) having a resetting member (31) for returning the setting piston (15) in its initial position (25) after completion of a setting process, and a spring (35) for resiliently biasing the resetting member (31) in a direction of its initial position, and a damping device (40) for the spring (35).

Abstract: A combustion type power tool having a motor suspension arrangement capable of buffering a shock applied to a motor. An integral buffer member made from an elastic material is fixed to a head cap. The buffer member includes a motor storage section in which a motor casing is stored, and a plurality of buffer segments extending radially outwardly from the motor storage section and integrally therewith. Each radially outer end portion of each buffer segment is fixed to the head cap for floatingly supporting the motor storage section.

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: 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 includes a cylinder having a peripheral wall which has an inner peripheral surface and an outer peripheral surface. The peripheral wall is formed with an exhaust hole at a first axial position. A piston is reciprocally movable in an axial direction and is slidable in contact with the inner peripheral surface. A combustion-chamber frame is abuttable on a head portion to provide a combustion chamber in cooperation with the head portion and the piston. The piston allows the combustion chamber to be in fluid communication with an atmosphere through an upper space above the piston and through the exhaust hole when the piston is located at a bottom dead center. The fin is disposed at the outer peripheral surface and has a portion extending in a direction slanted in relation to the axial direction and oriented toward the exhaust hole.

Abstract: A combustion-chamber frame is disposed in a housing of a combustion-type power tool and is movable in a longitudinal direction in interlocking relation to a push lever. The combustion-chamber frame is abuttable on a head portion to provide a combustion chamber in cooperation with the head portion and a piston. A fan is disposed in the combustion chamber and is connected to an output shaft of a motor so as to be rotatable with the output shaft for promoting turbulent combustion of air-fuel mixture. The fan and the combustion-chamber frame define, within the combustion chamber, a high turbulent-combustion region in which the turbulent combustion is rapidly generated and a low turbulent-combustion region outside the high turbulent-combustion region. A fin is disposed at at least one of the combustion-chamber frame, the head portion, and the piston to protrude into the combustion chamber. The fin is located within the low turbulent-combustion region.

Abstract: Applicant's novel invention relates to a novel hydrogen generator for supplying hydrogen to drive a hydrogen operated engine. The regulator can supply hydrogen to drive an engine for operating the cutter assembly of a lawnmower as well as supply the output of a hydrogen driven engine to operate a variety of power operated devices such as drills, saws, sanders, etc. In addition, the hydrogen generator can supply hydrogen to operate a power driven piston to drive fasteners.

Abstract: A setting tool for driving fastening elements includes a piston device (30) for the setting piston (20) and arranged in a setting direction end region of the hollow chamber (14) of the piston guide (13), with the piston stop device (30) having a stop member (32) adjoining the hollow chamber (14) in the setting direction and including a leadthrough (33) having an inner conical active surface (34) that cooperates with the conical active surface (24) of the setting piston (20), and with at least one of the active conical surface (24) and the active conical surface (34) being provided with a friction-reducing coating (35).

Abstract: The present invention is directed to a combustion-operated setting device for driving fastening elements such as nails, bolts and pins into a substrate, with a setting mechanism comprising a driving piston (15) which is supported to be displaceable in a guide, and with an electronic monitoring device for monitoring the status of the setting device. At least one sensor array (21, 22) is arranged at the guide for generating a measurement data pattern which can be evaluated by the monitoring device.

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: The invention relates to a combustion-driven setting tool for fastening elements having a housing (1), a piston guiding cylinder (22), which is displaceably mounted in the unit housing in the cylinder longitudinal direction, a piston (21) guided in the piston guiding cylinder (22) for driving a fastening element (13) into a receiving material (18), a receiving assembly (12) situated coaxial to the piston guiding cylinder (22) for the fastening element (13), as seen in the driving direction, lies in front of the piston guiding cylinder (22) and is displaceable relative to same; an elastic adjusting assembly (30), which constantly tends to separate receiving assembly (12) and the piston guiding cylinder (22) from each other; and a piston mounting (31), which is attached to the on the end of the receiving assembly (12) facing towards the piston guiding cylinder (22).

Abstract: The invention relates to a combustion driven working tool having a combustion chamber (2), a piston (8) guided in a cylinder (5), an ignition system for igniting a fuel supplied to the combustion chamber (2) for driving the piston (8) and a fan (7) at least for ventilating the combustion chamber (2). The running time and/or the speed of the fan (7) can be set as a factor of a measured temperature to realize a combustion driven working tool where an optimal ignition behavior can be set under changing working conditions, in particular under conditions of changing external temperature. A combustion chamber temperature is measured by a first temperature sensor (3) arranged on the combustion chamber (2) and supplied to a control unit (9), which calculates the cooling time and/or the speed for the fan (7) as a factor of the measured combustion chamber temperature and supplies these values to the motor (4).

Abstract: A motor mount for suspending a fan motor in a combustion-powered tool includes an inner ring for securing to the motor, an outer ring that is secured to a portion of the tool, and a web portion disposed between and connecting the inner ring and outer ring. The inner ring, outer ring, and web portion are formed as a unitary piece. Preferably, the mount is formed of a thermoplastic polyester elastomer.

Abstract: A combustion tool having a gas actuated magazine advance includes a combustion chamber defined in part by a cylinder, a valve sleeve axially reciprocating relative to the cylinder and an upper surface of a piston, a pneumatically actuated magazine fastener mechanism, and an exhaust driven actuation feed tube having a first end configured for insertion into an opening in the cylinder in fluid communication with the combustion chamber and a second end connected to the magazine fastener advance mechanism.

Abstract: The apparatus includes a casing, a cylinder head, a chamber sleeve tube to form a combustion chamber, a cylinder and a drive piston. An isolating element is mounted on the chamber sleeve tube so as, when the apparatus is opened, to isolate the space formed between the anterior part of the chamber sleeve tube and the casing from the combustion chamber. A bellows is provided for ducting the cooling and venting fresh air directly towards the chamber.

Abstract: The present invention relates to a hand-held working tool, such as a setting device used for driving fastening elements such as nails, bolts, pins and the like into a surface, or an at least partially percussive hand-held tool having a housing part (11) and a working mechanism such as a setting or striking mechanism arranged inside the housing of the device and having at least one sensing device (17) for sensing acceleration forces occurring during a setting or striking pulse as well as a handle. For improving this type of hand-held working tool (10) an interface (30) for data communication and data output is arranged on the hand-held working tool.

Abstract: A rotary hammer and a power tool. The rotary hammer is operable in an idle mode and a hammer mode and comprises a housing and a barrel positioned in the housing and having a forward portion. A ram is positioned within the barrel and is movable relative to the barrel between hammering positions and an idle position. In some aspects, a ram catcher assembly is positioned along the axis adjacent the forward portion of the barrel to releasably hold the ram in the idle position. The ram catcher assembly includes a friction member frictionally engageable with the ram and a damping member at least partially surrounding the friction member. As the ram moves to the idle position with a force, the damping member absorbs at least a portion of the force and the member applies friction to the ram.

Abstract: A combustion-operated working tool having a housing body (1), which has a cylindrical recess (5) and a piston chamber (2) connecting therewith for receiving a piston (3); an impact plate (8), which is arranged opposite to and at a distance to the cylindrical recess (5) and which can be displaced towards and away from the housing body (1), and a packing sleeve (12) arranged inside and elastically mounted, projecting out of the cylindrical recess (5).

Abstract: A setting tool includes a sleeve-shaped housing (11), a piston guide (13) and an ignition unit (12) located in the housing (11), with the ignition unit (12) having a cartridge chamber bottom (19) for enclosing a propellant (25) in cartridge chamber (18), which is located between the piston guide (13) and the ignition unit (12) and a locking device (30) having a locking position (38) in which the ignition unit (12) is held in a pre-loaded position (28) against an energy accumulator (23) and in which the cartridge chamber (18) remains open, and having a release position (39) in which the ignition unit (12) is displaced to its ignition position (29) by the energy accumulator in which the cartridge chamber bottom (19) closes the cartridge chamber (18).

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 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: The present invention relates to an internal combustion-operated setting tool for driving fastener elements such as nails, bolts, pins into a substrate, having a fuel source, with a fuel feed line from a fuel source to a combustion chamber and having at least one dosing device (30), which is arranged between the fuel source and the combustion chamber. For improving such setting tools, a displacement body (50) is arranged in a chamber in the dosing device (30) for forcing fuel out of the chamber, whose displacement volume can be adjusted.

Abstract: A setting device (10) for driving fastening elements into a receiving material has a housing (11), with a muzzle part (20) which is displaceable axially relative to the housing (11) and is arranged with a guide channel (38) for a fastening element strip (50) and opens into a receiving space (39) for a fastening element (51) to be driven in. Further, a locking element (30) is arranged in the muzzle part (20). The locking element (30) has a feeler portion (33) for detecting a fastening element (51) in the receiving space (39) and a locking part (32) for blocking the displacement of the muzzle part (20) relative to the housing (11) in a locking position (61) when a fastening element (51) is not detected in the receiving space (39) by the feeler portion (33). A blocking member (40) in the muzzle part (20) is movable into the guide channel (38) so as to block the fastening element strip (50).

Abstract: A combustion-powered nail gun drives nails into a workpiece when both a head switch and a trigger switch are turned ON while a safety switch is turned ON. The nail driving operation cannot be performed if the safety switch is not ON even if both the head switch and the trigger switch are ON. The head switch is turned ON when a push lever is urged against the workpiece. Fuel/air mixture in a combustion chamber is ignited when the head switch and the trigger switch are turned ON irrespective of an order in which the head switch and the trigger switch are turned ON, whereby “successive-shot driving” can be performed in which the trigger switch is maintained in its ON position while successively driving a plurality of nails at different locations of the workpiece by repeatedly pushing and releasing the push lever toward and away from the workpiece.

Abstract: A setting tool for driving fastening elements and including a setting piston (20) axially displaceably arranged in the hollow chamber (14) of a piston guide (13), and a piston stop device (30) for the setting piston (20), arranged in setting direction end region of the hollow chamber (14) and having a damping element (31) supported against a stop (15), and a stop member (32) adjoining the damping element (31) in a direction of the hollow chamber (14) and operationally connectable with the piston band (22), and having a cylindrical bushing (33) for the piston stem (21), with the bushing (33) having an inner diameter (DS) that amounts to from 70% to 90% of a size of the maximal outer diameter (DB) of the prison band that has a conical surface engageable with the inner surface of the bushing.

Abstract: In a powder driven fastening tool, a channel is included for feeding a strip of explosive powder cartridges to a firing mechanism. A trigger is included for actuating the firing mechanism, wherein the trigger is movable between a first position and a second position. An advancing lever is pivotally coupled to the tool, the advancing lever having a strip engagement portion for indexing the strip which extends into the channel. An advance link is cammingly engaged with the advancing lever and is operationally associated with the trigger so that the strip engagement portion is in a first position in the channel when the trigger is in the first position and so the strip engagement portion is in a second position when the trigger is in the second position.

Abstract: A piston holder for a drive piston (8) of a setting tool and having a circumferential adjusting surface (16) inclined toward a central axis (17) thereof so that a diameter of the adjusting surface (16) increase toward a rear, with respect to a setting direction (18) of the setting tool, end of the drive piston (8), with the piston holder including contact elements (22; 24; 36; 38; 40; 41, 52; 53; 58–61) engageable with the adjusting surface (16), and a spring (21; 27; 35; 36; 54; 55; 62) for biasing the contact elements into engagement with the adjusting surface (16).

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: 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: The present invention is directed to a combustion-operated setting device for driving fastening elements such as nails, bolts and pins into a substrate, with a combustion chamber (12) that has at least one combustion chamber outlet (13) in which a fuel gas mixture can be ignited for driving a driving piston (16) guided in a piston guide (17), and with a locking and unlocking mechanism (20) for unlocking the at least one combustion chamber outlet (13) in the starting position (31) of the driving piston (16) and for locking the at least one combustion chamber outlet (13) outside of the starting position (31) of the driving piston (16). The locking and unlocking mechanism (20) has a magnet (21) for detecting the driving piston (16) in the starting position (31).

Abstract: A gas combustion-powered apparatus includes a piston chamber housing a driveable piston, and a combustion chamber having a generally flat wall assembly and a cup-shaped wall defining at least one combustion volume therebetween. The cup-shaped wall is moveable in relation to the piston chamber, and has a generally flat portion opposing, and generally parallel to, the generally flat wall assembly. An ignition source is in operable relationship to the combustion volume, which can ignite a combustible gas within the combustion volume. The piston forms at least a portion of the generally flat wall assembly when the piston is in an undriven state.

Abstract: A port is employed for a fan chamber which defines a volume formed by at least one generally continuous vertical wall connecting a horizontal base wall with an opposing horizontal exit wall. Within the volume is a fan rotatable in a plane generally parallel to a plane of at least one of the horizontal walls. The port is formed of an inner side located between a center of the exit wall and an outer edge of said the wall, an outer side located between the inner side and the outer edge of the exit wall, and two opposing secant sides connecting respective ends of the outer side to the inner side. A shape of the inner side forms a straight line or a convex line with respect to the center of the exit wall.