Abstract: The invention concerns a fastener driving apparatus comprising a tank for storage of a fuel, particularly liquefied gas, a combustion chamber (3) connected to the tank via a valve element, where the combustion chamber has a movable piston (1) to advance a driving ram (4), and an ignition device to ignite an air-fuel mixture in the combustion chamber (3), where an active electrically driven evaporation element (8) is provided in a region (6, 7) of a supply line for the fuel.

Abstract: A gas combustion type driving tool (A) has a cylinder (4) for slidably receiving a piston (5), a cylinder head (8) provided above the cylinder (4), a tubular movable sleeve (15) movably placed in a vertical gap between the cylinder (4) and the cylinder head (8), and an annular sliding section (17) formed below the upper opening end of the cylinder (4) and sliding against an opening section at the lower end of the movable sleeve (15).

Abstract: A fastener driving tool includes a power source including a cylinder, a piston with a driver blade reciprocating in the cylinder, a tool nose associated with the power source for receiving the driver blade for driving fasteners fed into the nose, and a magazine housing a supply of the fasteners. A magazine feeder mechanism is associated with the magazine for sequentially feeding fasteners into the nose, and the feeder mechanism includes a reciprocating feed piston. A conduit is connected between a port in the cylinder and the feed mechanism for diverting combusted gas for activating the feed piston. The port is disposed in the cylinder a specified distance below a piston prefiring position, and the distance is reflective of a delay of feeding the gas to the feed piston at least until engagement between an end of the driver blade and a head of a fastener in the tool nose.

Abstract: A fuel cell is provided and is constructed and arranged for use with a combustion tool including a cylinder head frame. The fuel cell includes an outer shell having a closed lower end and an open upper end, and a closure crimped over the upper end and defining an opening for accommodating a reciprocating valve stem. An adapter frictionally engages the closure and includes a flange configured for suspending the fuel cell in the fuel cell chamber.

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 combustion-engined setting tool for driving fastening elements such as, e.g., nails, bolts, or pins in a workpiece, includes a plate-shaped member (17) axially displaceable in the tool combustion chamber (14), a member (33) for displacing the plate-shaped member (17), a holding device (30) for retaining the plate-shaped member (17) at an axial end (15) of the combustion chamber (14) against action of the displacing member (33), with the holding device (30) having magnetic elements (31) for producing a holding force for retaining the plate-shaped member (17) and a device for overpowering the holding force produced by the magnetic elements (31).

Abstract: The present invention is directed to a combustion-operated setting device (10) with a combustion chamber (12) for a combustible propellant, an ignition device (16) for generating an ignition spark in the combustion chamber (12), a metering device (13) for metering the propellant, and control electronics (30) for the ignition device (16) and the metering device (13). In order to improve the control electronics (30), the control electronics (30) have at least two logically separated circuits. A first circuit (33) controls the metering device (13) and a second circuit controls the ignition device (16).

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: Embodiments of the present invention may include a combustion-type drive apparatus comprising a drive mechanism and an illumination device. The drive mechanism is configured to generate a drive force through combustion of a gas. The drive force is utilized to drive-in a member. The illumination device comprises a lighting portion configured to illuminate a place where the member is being driven in.

Abstract: A power-driven hammer including a body including a tubular housing and a barrel assembly received in the housing. The barrel assembly has an at-rest position relative to the housing. The barrel assembly includes a barrel having a forward end adapted to hold a tool, an opening, and a rearward end. The barrel assembly includes a mass received in the opening of the barrel. The mass moves in the barrel opening when the hammer is operating through a power stroke and a return stroke. The barrel assembly moves forward and rearward from its at-rest position relative to the housing when the hammer is operating. The hammer includes a vibration reducing mechanism connecting the barrel assembly to the body reducing shock transmitted to the housing as the mass moves forward and rearward in the barrel.

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.

Abstract: A drive tool includes an ejector, a press member, a press detection switch, an operation member, an operation detection switch, a control unit, an operation state detector, and a report unit. The control unit makes the ejector carry out ejection of a fastening tool when the press detection switch and the operation detection switch are turned on. The operation state detector detects a case where the drive tool comes into one of a plurality of kinds of preset operation states which include at least one operation state other than a state of a battery. Report patterns different for each of the plurality of kinds of operation states are set in the report unit. When one of the operation states is detected by the operation state detector, the report unit reports the detection using the report pattern set corresponding to the detected operation state.

Abstract: A fuel gas has a gas including at least 40 weight % or more of 1-butene and propane, or at least 56 weight % or more of 1-butene and propylene. A combustion type power tool is driven by the fuel gas. A compressed gas container for a combustion type power tool has an inner side vessel filled with the fuel gas. When the fuel gas includes propane, 1-butene may be equal to or higher than 59 weight % and equal to or lower than 95 weight %. When the fuel gas includes propylene, the 1-butene may be equal to or higher than 70 weight % and equal to or lower than 96 weight %.

Abstract: A fastener driving tool and method for driving fasteners into a substrate is disclosed. The tool includes a working piston that is capable of being moved abruptly translationally so as to drive a fastener, such as a stud or a nail. In order to further improve the handling and/or energy efficiency during operation of a fastener driving tool, the fastener driving tool includes an operating device that enables switching between a manual and an automatic output-power regulating mode.

Abstract: A fastener driving tool and method for driving fasteners into a substrate is disclosed. The tool includes a working piston that is capable of being moved abruptly translationally by igniting an ignitable mixture in a combustion chamber so as to drive a fastener, such as a stud or a nail. The volume of the combustion chamber is adjustable. In order to further improve the operation and/or energy efficiency of the fastener driving tool, the fastener driving tool also includes a control device which is connected in a control relationship to an adjusting device for adjusting the combustion chamber volume and to a metering valve device for metering fuel gas.

Abstract: The invention concerns a driving apparatus comprising a tank (5) for storage of a fuel, in particular a liquefied gas, a combustion chamber (3) connected to the tank (5) via a valve element (6), where the combustion chamber (3) has a movable piston (3a) to drive a driving ram, and an ignition device (11) to ignite an air-fuel mixture in the combustion chamber (3), where in the combustion chamber an evaporation element (8) is provided, where injection of the fuel is aimed at the evaporation element (8).

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. The valve sleeve has a range of positions between a first sealing position in which the combustion chamber is closed, and said pre-firing position in which the valve sleeve is prevented from further movement. A lockout device is associated with the power source and has an actuated position configured for preventing the reciprocation of the valve sleeve beyond the first sealed position to open the combustion chamber, but permitting movement of the valve sleeve from the first sealed position to the pre-firing position until the piston returns to a piston pre-firing position post combustion.

Abstract: The invention relates to a fastener driving tool comprising a tank (5) for storing a fuel, in particular liquefied petroleum gas, a combustion chamber (2) connected to the tank, wherein the combustion chamber (2) has a movable piston for powering a driving plunger, and a metering device (4) arranged between the tank (5) and the combustion chamber (2), wherein a defined quantity of fuel can be transported by means of the metering device (4) from a metering space (12) into the combustion chamber, wherein the metering device (4) comprises an electric stepper motor (15) by means of which the defined amount can be varied as a function of a temperature.

Abstract: The invention relates to a fastener driving tool comprising a tank (5) for storing a fuel, in particular liquefied petroleum gas, a combustion chamber (2) connected to the tank (5), wherein the combustion chamber (2) has a movable piston for powering a driving plunger, and a metering device (4) arranged between the tank (5) and the combustion chamber (2) wherein a defined quantity of fuel can be transported by means of the metering device (4) from a metering space (12) into the combustion chamber (2), and wherein the metering device (4) comprises at least one electrically driven valve member (18) wherein the metering space can be cut off from the combustion chamber by the valve member (18), wherein the valve member (18) is constructed as a 3-way valve, in particular with two switching positions.

Abstract: The invention relates to a fastener driving tool comprising a tank (2) for storing a fluid, in particular liquefied petroleum gas, a combustion chamber (1) connected to the tank (2), wherein the combustion chamber (1) has a movable piston (6) for powering a driving plunger (7), and a metering device (4) arranged between the tank (2) and the combustion chamber (1), wherein the metering device (4) has a movable displacement member (19) for ejecting the fuel out of a metering space (15), wherein the displacement member (19) can be moved by an actuation force from a first power source in a displacement direction against a pressure of the fuel, wherein an additional supporting force from a second power source acts on the displacement member (19).

Abstract: The invention relates to a fastener driving tool comprising a tank (5) for storing a fuel, in particular liquefied petroleum gas, a combustion chamber (2) connected to the tank (5), wherein the combustion chamber (2) has a movable piston for powering a driving plunger, and a metering device (4) arranged between the tank (5) and the combustion chamber (2) wherein a defined quantity of fuel can be transported by means of the metering device (4) from a metering space (12) into the combustion chamber (2), wherein the metering device (4) comprises a thermomechanical element (15) by means of which the defined amount can be varied as a function of a temperature.

Abstract: The invention relates to a fastener driving tool comprising a tank (5) for storing a fuel, in particular liquefied petroleum gas, a combustion chamber (2) connected to the tank (5), wherein the combustion chamber (2) has a movable piston for powering a driving plunger, and a metering device (4) arranged between the tank (5) and the combustion chamber (2) wherein a defined quantity of fuel can be transported by means of the metering device (4) from a metering space (12) into the combustion chamber (2), and wherein the metering device (4) comprises a movable displacement member (16) for ejecting the fuel out of the metering space (12), wherein the movement of the displacement member (16) is supplied by the pressure of the fuel as the energy source.

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 tubular pin guide is disposed for reciprocal movement in the fastener channel for receiving fasteners traveling toward the outlet. A unitary actuator has a first end engaging the pin guide for common reciprocation relative to the nosepiece body and a second end engaging the cage.

Abstract: A pneumatic nailing machine includes a striking cylinder accommodated in a main housing to permit a piston and driver assembly to be moved for driving a nail when compressed air is supplied into the cylinder. A valve member is movable relative to the cylinder between an air-supplying position and an air-exhausting position. A winding air channel has an intake port disposed downstream of a head valve zone, an outflow port angularly displaced from the intake port, and a channel body which extends radially from the intake port, axially into a mounting shell mounted on the main housing, and circumferentially toward the outflow port. Compressed air exhausted from the cylinder can expand in the air channel and the flow rate of the compressed air is reduced so as to efficiently attenuate noise.

Abstract: The present invention discloses a gas-combustion coiled strip nail driving device including a housing and a nose assembly. The housing mounts therein a cylinder head, a movable sleeve, a cylinder block, and a piston assembly arranged inside the cylinder block. The cylinder head, the movable sleeve, and the cylinder block collectively define a combustion chamber. The nose assembly includes a feeding mechanism that includes a secondary cylinder. An exhaust passage is formed in the cylinder head and communicates the combustion chamber. The housing has an outside surface on which a guide tube is mounted in such a way that the guide tube vertically extends along the housing. The guide tube has an S shape terminal end in communication with the exhaust passage, and a curve that is bent in a direction toward the housing. The guide tube has an opposite end in communication with the secondary cylinder.

Abstract: A combustion-operated setting tool (10) for driving in fastening elements, includes a combustion drive for driving a setting piston (13) displaceable in a guide cylinder (12) and which drive has at least one combustion chamber (14), a ventilator (16) for the combustion drive, a control unit (30) for controlling the ventilator (16) dependent on a thermal control parameter and having a program for modeling the thermal control parameter based on time data and ventilator operation data.

Abstract: A hammer-drive powder-actuated tool includes a hollow tool body extending along a front-to-rear direction, and a firing device disposed within a rear end portion of the tool body. The firing device includes a pin holder having a through hole extending along the front-to-rear direction, and a firing pin movable forwardly and rearwardly relative to the pin holder. The pin has a firing end portion that is disposed at a front end thereof and that extends into the through hole in the pin holder, and a central axis aligned with that of a rimfire cartridge along the front-to-rear direction. A front end of the firing end portion of the firing pin has a diameter larger than the inner diameter of the annular primer and smaller than the outer diameter of the annular primer.

Abstract: A powder-actuated fastener-driving device includes a hollow body including a tubular portion and a handle, and an inner tube movable forwardly and rearwardly within the tubular portion and having a front end disposed outwardly of the tubular portion, and a slot. The front end of the inner tube has an outer surface formed with a position-limiting groove. A stop member is disposed within the tubular portion, and extends into the slot. A sound-absorbing sleeve is sleeved movably on a portion of the tubular portion disposed outwardly of the handle, and has an inner surface formed with a position-limiting block, which is movable forwardly and rearwardly within the position-limiting groove. When the front end of the inner tube is pressed forwardly against an object, the sound-absorbing sleeve comes into contact with the handle.

Abstract: In a gas internal combustion type nailing machine, a tubular-shaped sleeve is fixed between a movable housing and a fan. Between the movable housing and sleeve, an annular space portion is formed. In such portions of the sleeve as existing respectively upwardly and downwardly of the fan, there are formed communication holes and in communication with the annular space portion. Mixed gas blown out by the fan flows through the lower communication hole and returns from the annular space portion to the combustion chamber through the upper communication hole.

Abstract: A gas internal combustion type nailing machine including a striking cylinder for slidably accommodating a striking piston therein, a combustion chamber formed in an upper side and capable of being opened and closed, a compressor for supercharging compressed air into the combustion chamber, a fuel supply device for supplying a fuel gas into the combustion chamber, and a safety device for preventing the nailing machine from being driven for ignition when the supercharge pressure of the compressed air exceeds a set pressure value.

Abstract: A combustion nailing tool includes a tool body, a one-way valve, a cover disposed on the one-way valve, and a housing including a housing body and a cap. The tool body includes a combustion cylinder formed with an exhaust vent. The one-way valve is disposed on the combustion cylinder to cover an outer side of the exhaust vent, and is configured to allow exhaust gas resulting from ignition in the combustion cylinder to be vented through the exhaust vent. The cover has an open end allowing the exhaust gas to flow therethrough. The housing body defines an accommodating space for containing the combustion cylinder, and an opening in flow communication with the accommodating space and registered with the cover. The cap is mounted removably on the housing body and covers a part of the opening to thereby allow the exhaust gas to flow out of the housing.

Abstract: A powder-actuated fastener-driving device includes a barrel mounted in a housing. The barrel has a barrel wall formed with a through hole communicating with a radial vent hole. The through hole and the vent hole constitute an exhaust passage. A driving piston is mounted movably within the barrel, and has a rear end portion cooperating with an inner annular surface of the barrel wall to define an annular gap therebetween. A power adjusting unit includes an adjusting member disposed movably in the housing, and operable to move a control end portion thereof within the through hole so as to control an effective open area of the exhaust passage such that combustion gases discharge from a firing chamber defined between the driving piston and a rear end portion of the barrel through the gap and the effective open area, thereby controlling venting of combustion gases from the firing chamber.

Abstract: A device includes an actuation system with a dose chamber including an inlet for high pressure fluid. A working chamber extends away from the dose chamber. An annular wall separates a portion of the working chamber from the dose chamber such that the dose chamber encompasses the portion of the working chamber. In use an item to be driven along the working chamber is at least partially within the surrounded portion of the working chamber with the item at one end of its travel in the working chamber. A valve mechanism selectively allows high pressure fluid from the dose chamber to flow into the piston chamber.

Abstract: A combustion-powered fastener-driving tool includes a tool housing, a power source associated with the housing and including a cylinder head, a cylinder and a piston reciprocating in the cylinder, a valve sleeve reciprocating relative to the cylinder, a chamber switch and a trigger switch; the cylinder head, the valve sleeve, the cylinder and the piston combining to define a combustion chamber, the closing of both switches required for initiating an ignition of the power source for driving piston down cylinder. A fan is disposed in the combustion chamber, and a control system includes a control program associated with the housing, connected to the power source, the chamber switch and the trigger switch, and configured for providing a designated ignition delay period after fuel is injected into the combustion chamber and when the chamber switch is closed, the delay period being variable as a function of monitored tool parameters.

Abstract: A powder-actuated fastener-driving device includes a hollow body including a tubular portion and a handle, and an inner tube movable forwardly and rearwardly within the tubular portion and having a front end disposed outwardly of the tubular portion, and a slot. The front end of the inner tube has an outer surface formed with a position-limiting groove. A stop member is disposed within the tubular portion, and extends into the slot. A sound-absorbing sleeve is sleeved movably on a portion of the tubular portion disposed outwardly of the handle, and has an inner surface formed with a position-limiting block, which is movable forwardly and rearwardly within the position-limiting groove. When the front end of the inner tube is pressed forwardly against an object, the sound-absorbing sleeve comes into contact with the handle.

Abstract: A combustion nailer includes a tool housing, a combustion source disposed at least partially in the housing and including a valve sleeve reciprocating relative to a cylinder head along a tool axis between a rest position and a pre-firing position, a fuel cell chamber in the housing in operational proximity to the combustion source and dimensioned for accommodating a fuel cell, at least one pivot point associated with the fuel cell chamber transverse to the tool axis for facilitating movement of the fuel cell between a non-activated position and an activated position, and at least one actuator pivotable about the pivot point and engaging the valve sleeve at a point closer to the tool axis than to the fuel cell chamber such that movement of the valve sleeve from the rest position to the pre-firing position causes movement of the fuel cell from the non-activated position to the activated position.

Abstract: A device for impacting a fastener in one embodiment includes a housing with an upper housing portion, a middle housing portion, and a side housing portion extending between the upper housing portion and the middle housing portion, a drive cylinder configured to vent within the housing, an air passage extending through the housing and including a mouth at the upper housing portion, and a strike plate extending over the upper housing portion and including a top portion positioned apart from the upper housing portion, and a first side extension extending downwardly from the top portion along the side housing portion to a location above and spaced apart from an outwardly extending first surface of the middle housing portion.

Abstract: An indirect fire device for fixing fasteners in a substrate material includes a piston for driving a fastener movably mounted in a barrel and a plug guide for guiding a fastener towards the substrate material. The device is adapted to receive a magazine for receiving a strip of fasteners in order to introduce the fasteners one by one into the plug guide. Each fastener is held in a sleeve comprising bridges for connection to another sleeve. The plug guide of the device includes a zone having an enlarged circular section at the opening of the magazine leading into the plug guide, extending axially over the length of a sleeve increased by the stroke of the plug guide for loading the device.

Abstract: A driving piston 4 is provided slidably up and down in a driving cylinder 3 arranged in a tool body 1. By moving a movable sleeve 10 provided at the upper portion of the driving cylinder 3 up and down, the movable sleeve 10 is brought into contact with and separated from the driving cylinder 3 and a cylinder head 8 provided above the driving cylinder 3, whereby a combustion chamber can be opened and closed. Mixture gas obtained by stirring and mixing combustible gas and air together in the combustion chamber by a fan 16 is ignited by an ignition plug 15 disposed at the cylinder head 8 and explosively combusted. By this high-pressure combustion gas, the driving piston 4 is impulsively driven, and a driver 5 coupled to the lower surface side of the driving piston drives nails.

Abstract: A gas combustion type driving tool is provided with two modes including: a contact mode in which a contact arm 15 is pressed against a workpiece P into which a nail is to be driven and the nail is driven under a condition that a trigger lever 16 is pulled; and a trigger mode in which the trigger lever 16 is pulled and the nail is driven under a condition that the contact arm 15 is pressed against the workpiece P. In either mode, a nail driving can be continuously executed.

Abstract: A dual combustion fastener device implements a first combustion event, contained in a first combustion chamber portion to compress a combustible fuel/air mixture contained in a second combustion chamber portion, which is separated from the first combustion chamber portion by a piston including a driver for driving a fastener disposed in the driver's path of travel into a workpiece, in order to generally provide rapid driving power for securing a fastener disposed in a nose guide of the combustion fastener. Ignition of the second combustion event may be timed so that the second combustion event substantially occurs when the piston has achieved top dead center or the maximum compression of the combustible material in the second combustion chamber portion. Utilization of compressed combustible material may allow for the utilization of a piston having a small cross-sectional area in comparison to a typical combustion device while providing equal or greater driving force in a rapid manner.

Abstract: A setting tool for driving fastening elements in a constructional component, includes a muzzle (14), a bolt guide (15) located in the muzzle (14), a magazine (20) for fastening elements (50) and releasably mountable on the tool housing (11) and having a connection section (21) provided at an end of the magazine (20) adjacent to the muzzle (14) and with which the magazine (20) is secured to the muzzle (14), and a connection device for releasably mounting the magazine on the tool housing (11) and including a hinge bearing formed as a plug-in coupling and provided with a first support element arranged on the connection section (21) of the magazine (20) and a second support element arranged on the muzzle (14), with the hinge bearing (17) having a pivot axis (S) provided on a side of the magazine (20) remote from the housing (11), outside of the magazine (20) and outside of the muzzle (14) and extending at a right angle to a plane (E) defined by the bolt guide (15) and the magazine (20).

Abstract: A combustion-engined setting tool (10) for driving fastening elements in a workpiece includes a combustion chamber (11), a drive piston (15) displaceable in a piston guide (17) and driven by expanding gases produced in the combustion chamber (11), and a device for returning the drive piston (15) in its initial position as a result of pressure difference between chambers formed on opposite axial sides of the piston head (115), and including a pump (20).

Abstract: A combustion-operated setting tool (10) for driving in fastening elements, includes a combustion chamber (15), a ventilator (16), and a motor (17) for driving the ventilator (16). The motor (17) is mounted in a receptacle (20) of a motor-supporting member (21) and is supported at least at one of its axial ends (24, 25) by an annular damping element (30) at a wall portion (22, 23) defining the receptacle (20), with an annular recess (33) arranged at the circumference of the annular damping element (30).

Abstract: The tool is to be used for driving fastening members into a supporting material. It comprises a cylinder (3), with a piston (5), a combustion chamber (1, 11), a cylinder head (12) bearing a fuel igniting means (36) in the chamber (1), a pin guide (9), for receiving a fastening member and the piston (5) shaft (7) and a cage (21). Return means are provided for opening the chamber (11), driving the pin guide (9) forwardly, opening and closing abutment means for the chamber (11). There are provided: one single central spring (32) for opening the chamber (11) and, on each side of the tool, one single opening and closing side chamber abutment (18, 55), integral with the chamber (11) and mobile in translation on the corresponding side of the cylinder (3).

Abstract: The tool comprises an engine for propelling a piston including a shaft for driving a fastening member into a supporting material and through a pin guide, with means for adjusting the depth of drive of the piston shaft outside the pin guide at the end of the propulsion and at the stop of the piston in abutment against stop means. The pin guide is mounted free in translation and the depth of drive adjusting means comprise an adjustment knurl with a knurl shaft arranged so as to be in abutment against the pin guide and to push the pin guide forwards under the rotation action of the knurl.

Abstract: A fan motor is adapted to be mounted in a combustion-powered tool. The combustion-powered tool has a housing. The fan motor includes a fan unit, a motor for driving the fan unit, a vibration-absorbing unit, and a clamping unit. The vibration-absorbing unit includes a rigid support that is adapted to be mounted fixedly in the housing of the combustion-powered tool, and an elastic member sleeved over the motor and molded on the rigid support such that the rigid support is disposed around the elastic member. The elastic member is disposed between the rigid support and the motor for absorbing vibrations generated by the motor. The clamping unit includes at least one clamping member sleeved over the elastic member for clamping and retaining the elastic member on the motor.

Abstract: In a feed piston and cylinder mechanism for feeding a feed claw that engages with and disengages from connected nails accommodated within a magazine to a nose portion, the feed claw is biased in a feeding direction by a bias member and is retracted in a backward direction by high-pressure combustion gas. A valve is provided in a path which guides the high-pressure combustion gas to the feed piston and cylinder mechanism and communicates the path with the atmosphere. The feed piston and cylinder mechanism is controlled by opening/closing the valve.

Abstract: A combustion-type power tool includes a cylinder, a piston, a head, a combustion chamber frame, an ignition unit, a trigger, a control member. The combustion chamber frame is abuttable on the head to provide a combustion chamber in cooperation with the head and the piston. The trigger is operated by a user for driving the fastener into a workpiece. The control member detects that the combustion chamber has been provided and the trigger has been operated, and allows the ignition unit to ignite the combustible gas only when the control member detects that both the combustion chamber has been provided and the trigger has been operated.