Abstract: A fastener driving device includes a nose assembly carried by a housing that has a reservoir. The nose assembly has a fastener drive track. At least a portion of the fastener drive track is defined by a movable portion of the nose assembly. A fastener driver is movably mounted in the housing and configured to enter the drive track and drive successive leading fasteners into a workpiece. A head valve is constructed and arranged to be actuated so as to allow the pressurized gas to move the fastener driver through an operating cycle. An actuator is constructed and arranged to actuate the head valve. The actuator includes a trigger valve constructed and arranged to allow passage of the pressurized gas from the reservoir to a chamber above the head valve, and a contact valve operatively connected to the movable portion of the nose assembly.

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 purpose of this invention is to propose a switching mechanism for switching stapling modes of a stapler, which mainly comprises a trigger, a supporting member, a slide member, a spring, a hooking member and a torsion spring. When the safety device of the stapler is pushed, then it further pushes the slide member to open the air valve, then at the moment, if the trigger is further pressed, the stapling counterforce will make the slide member escape the pressure from the safety device so to finish single stapling process. When the trigger is pressed first and then the safety device is pushed to further push the slide member to open the air valve, it will make stapling contentiously until the trigger is released. Above process then makes a contentious stapling.

Abstract: A linkage mechanism for a control valve in a nail gun is provided. The control valve is disposed on a main body of the nail gun. A valve plug of the control valve adjoins to a safety rod of the nail gun. A trigger valve is mounted on the main body and an outer trigger is disposed adjacent to the trigger valve. An inner trigger is pivotably disposed in the outer trigger. An end of a rod member is slidably disposed at a side of the outer trigger and another end of the rod member is connected between the valve plug and the safety rod with an arm. A stopping portion is formed at a middle portion of the rod member. The stopping portion is configured for pressing the outer trigger so as to drive the inner trigger to push the rod member, the arm, the valve plug and the safety rod to move along a nail driving direction of the nail gun. The present linkage mechanism can improve a stability of controlling of nail shooting action and a durability of the nail gun.

Abstract: A combined fuel cell and combustion tool including a combustion tool configured for receiving a fuel cell; the fuel cell having a housing defining an open end enclosed by a closure; a main valve stem having an outlet, disposed in operational relationship to the open end and reciprocating relative to the housing at least between a closed position wherein the stem is relatively extended, and an open position wherein the stem is relatively retracted; a fuel metering valve located within the housing, associated with the main valve stem, including a fuel metering chamber defined in part by a metering chamber seal and configured so that when the stem is in the open position, only a measured amount of fuel is dispensed through the outlet, the stem having a radially variable exterior contour periodically sealingly engaging the seal such that in the closed position a non-sealing relationship is defined between the stem and the seal, and in the open position a sealing relationship is defined between the stem and the se

Abstract: A coil nailing device for finishing materials is invented that comprises a standby part for temporarily retaining and loading the nails into a muzzle. A door is installed adjacent to the standby part to check the nail supply. A door latch consists of a hook, coil spring and latch hinge shaft. The door and door latch are operated in the lateral direction, perpendicular to the axis of the main body. The muzzle consists of an adapter, lever arm and a pair of arc-shaped sliding grooves formed on both lateral surfaces. The adapter is attachable to the nose of the main body. A clearance setting device is designed to allow the use of various sizes of nails by setting the depth of the magazine depending on the loaded nail size. An interval setting device is convenient to nail a series of shingle panels by setting the panel interval while the coil nailing device is sliding along the edge of the panels.

Abstract: A bushing for conducting air in a nail gun is arranged between an air chamber and a cylinder received in a housing of the nail gun. The bushing is adjacent to a bottom of a main valve for driving hitting motion of the nail gun. A number of main valve holes that are adjacent to the main valve are formed in a sidewall of the cylinder. At least one air inlet is formed in a bottom of a sidewall of the cylinder. An air flow passage is defined in the housing and is in communication with the main valve and the air hole. A valve plug which is configured for opening or closing the air flow passage is received in the air flow passage. The valve plug divides the air flow passage into an upper portion and a lower portion. The lower portion is formed in the housing. An annular end surface is formed on a top of the bushing. The annular end surface defines a main air inlet for the main valve. An end portion extends from the bushing and having the upper portion of the air flow passage formed therein.

Abstract: A fastener driving device includes a frame, a fastener driver reciprocally mounted in the frame, and a trigger assembly. The trigger assembly includes a trigger lever configured to be moved to an actuated position to actuate the fastener driving device, a mode selector rotatably mounted to the frame, the mode selector being configured to move to select a mode of operation of the fastener driving device, and a trigger lock mounted to the frame, the trigger lock being movable between a first position wherein actuation of the trigger lever is permitted and a second position wherein actuation of the trigger lever is prevented. In the first position, the trigger lock engages the mode selector to prevent the mode selector from moving. In the second position, the trigger lock disengages the mode selector to permit movement of the mode selector to select the mode of operation of the fastener driving device.

Abstract: In a controlling mechanism for pneumatic nailer, the pneumatic nailer includes a leaf spring, a trigger, a trigger valve and a safety rod attached to a main body of the nailer. The control mechanism includes a control valve and the control valve includes a valve plug connected to the safety rod. The leaf spring is mounted between the trigger valve and the trigger for receiving actuation from the trigger, and one end of thereof being extended to a position for pushing the valve plug so that through pressing the trigger, the leaf spring is driven to push the valve plug and the safety rod to move downwardly, thereby controlling the pressurized air to drive the nail gun. As such, the valve plug can move in to a position that can to control the nail hitting action of the nail gun in advance so the stability of control increases.

Abstract: A nail gun includes a fastener drive track capable of receiving fasteners having different length. A faster positioning assembly includes at least one swinging member and a stop portion. The swinging member is elastically and pivotably disposed at a side of the fastener drive track. The stop portion is formed at an end of the swinging member and received in the fastener drive track. The stop portion is configured for positioning fasteners prior to the fasteners are hit, and the stop portion retractably exits from the fastener drive track when a long fastener is received in the fastener drive track. The fastener positioning assembly enables the nail gun to drive fasteners having different length, as such, it is very convenient to use such nail gun to join different workpiece having different thickness on an object.

Abstract: A nail gun includes a housing having a first locking element, an opposite second locking element, and a sliding groove, a safety mechanism including an actuation member in the sliding groove, the actuation member having an end nose, and a nail alignment adjustment mechanism including a lever pivotably secured to the housing, a spring having a first end secured to the other end of the lever and a second end affixed to the actuation member, and a spring-biased selector including a shank passing the lever, and a knob secured to the shank. Pivoting the knob from a first position to a second position will cause the nose to contact a first workpiece. Pivoting the knob from the second position to the first position will cause the nose to dispose above a second workpiece and align a nail with a through hole of the second workpiece.

Abstract: The present invention relates to a nail shooter. The present invention provides the nail shooter driven by a high-pressurized gas in liquid state, in order to resolve technical problems with the prior nail shooters, such as difficulty in application, a loud noise, a safety hazard. The shooter body is provided with a trigger mechanism, a firing pin used for striking a nail to get it shot, a piston mechanism for pushing the firing pin, and a switch mechanism for releasing the driving gas toward the piston mechanism. The handle of the nail shooter is provided with a coupling tube, which is provided with an intake joint used for introducing the gas from a cylinder containing high-pressurized gas in liquid state and further with a decompressor that decompresses the introduced gas. Under control of the trigger mechanism, the decompressed gas can drive the piston mechanism to act via the switch mechanism, and further push the firing pin to strike a nail at a high speed to get it shot.

Abstract: The invention relates to a percussive tool having an oscillatory drive (3), the force of which is transmitted to a tool bit holder (25) by way of a drive member (17). Extending through the percussive tool is a longitudinal opening that allows a rod-shaped object, such as, for example, a guide wire, to be guided through the percussive tool. The tool bit holder (25) has a seat (34), which can receive the tool bit in different orientations. Moreover, the tool bit holder (25) is made of a combination of light metal and steel, which allows a reduction in acceleration forces and noise generation. A saddle-shaped coupling (24) is provided between the tool bit holder (25) and the drive member (17), which guarantees a tight fit.

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

Abstract: A tacker having an anti-double firing devise for a single firing mode has developed comprising: a connector (100?) for linearly moving back and forth along an ejection guide (4) when the tacker is depressed or released on a work target, a detent (100a?) formed a tiny rectangular shaped cutout at proximal end of the connector (100?), a firing control plate (94) for pushing a piston valve rod (12) by its stroke into a cylinder of an operating unit (10) according to the movement of the connector (100?), and an anti-double firing controller (102) forming an index-finger shape with slightly bent finger tip, which has a flat top surface and a rounded-tip lower surface for easily engaging or disengaging to the detent (100a?). The anti-double firing controller (102) is latched into the detent (100a?) soon after a firing for preventing subsequent misfiring on the same target due to a repulsion of the connector (100?) for a single firing mode.

Abstract: A nail gun includes a housing defining a group of receiving grooves and a safety rod. The control valve includes a body and a valve stem slidably received in the body. The body is movably mounted in the receiving grooves and one end of the valve stem is arranged to sustain the safety rod at a predetermined height. The predetermined height can be adjusted by moving the body relative to the receiving grooves.

Abstract: An exemplary compressed air filter assembly for nail gun has an end cap at a handle of the nail gun, having an inlet aperture for guiding external compressed air therein, communicating with a main air chamber of the handle; an inlet pipe extending in the inlet aperture and the main air chamber, having a ring-shaped step formed at an inner peripheral surface of a sidewall thereof; and a filter disposed at the inlet pipe. At least one bar is provided at the sidewall of the inlet pipe, transversely disposed in the inlet aperture, and the filter being disposed between the at least one bar and the ring-shaped step. The compressed air filter assembly for nail gun utilize the at least one bar to support a center portion of the filter, which can improve the strength of the filter to resist the blasting of the compressed air.

Abstract: A manually swingable hammer-type stapling tool having an elongate housing having a striker movably mounted thereon; a staple driving blade mounted on the housing and movable relative to the striker along a staple discharge path when the striker impacts against a surface; a staple magazine carried on said housing and containing a clip of staples so that a leading staple of the clip is disposed in a staple discharge path below the driving blade; and a cap supply and feeding arrangement mounted on the housing for positioning a cap in a discharge position wherein it is disposed below the leading staple, the arrangement including a cap magazine containing a significant number of individual caps disposed in adjacent and joined edge-to-edge relationship to define a connected strip of caps, and an impact activated feeding mechanism for advancing a leading cap of the strip into the discharge position.

Abstract: A device and method for temporarily mounting a tool to a member such as an upright board without the need for any prior attachments to the board. A member securing element attached to the tool is secured to the upright board when gripping surfaces engage opposite sides of the board as a result of rotation of the tool brought about by an off-set center of gravity.

Abstract: A soil nail launching device and method are provided wherein the launching device includes an improved configuration for the protective shroud and an improved configuration for a connection between the breach and barrel of the launching device. For the protective shroud, a plurality of removable shroud plates are provided to ease maintenance of the shroud plate, as well as to provide more consistent pressure release after the launcher has been fired. The improved breach and barrel design includes a connection that does not reduce the area of the annular space that is evacuated during firing of the device, thereby optimizing the available volume of air to be transferred to the breach for launching the soil nail through the barrel.

Abstract: A pneumatically operable fastener-driving tool and seal mechanism assembly, and a method of operating the same, comprises the use of a single, annular seal member, having a substantially V-shaped cross-sectional configuration, disposed within an annularly recessed portion of the fastener-driving tool piston in such a manner that the open region of the V-shaped annular seal member is disposed toward the relatively high-pressure upstream end portion of the fastener-driving tool cylinder, while, conversely, the closed region of the V-shaped annular seal member is disposed toward the relatively low-pressure downstream end portion of the pneumatic tool cylinder Accordingly, the relatively high-pressure air acts upon the radially outwardly flared lip portion of the annular seal member during a power stroke, while relatively low-pressure air acts upon the radially outwardly flared lip portion of the annular seal member during a return stroke, whereby only a single V-shaped annular seal member is required to achieve

Abstract: A fastener-driving tool is provided with a cap assembly which includes a switch mechanism that permits the tool to be operated in one of two firing modes of operation. The switch mechanism comprises a two-position switch mechanism such that when the switch mechanism is disposed at a first one of its two positions, the tool will be able to operate in a fully automatic continuous firing mode of operation so as to continuously fire fasteners into a substrate as long as the workpiece contact element and the trigger mechanism are disposed at their depressed positions, or alternatively, when the switch mechanism is disposed at the second one of the two positions, the tool can be operated in a one-shot firing mode such that the tool can only fire a single fastener, either in accordance with, for example, a sequential-firing mode of operation or a bump-firing mode of operation, until the trigger mechanism is released and again depressed.

Abstract: A hand-held power tool is provided, the operational power of which is provided by a gas combustion mechanism. The gas combustion mechanism comprises a first priming cylinder (2) having a first piston (4) and an air intake valve (6). The priming cylinder (2) is fluidally connected via a transfer valve (8) to a combustion chamber (10) connected to a second delivery cylinder (12) having a second piston (14). In use, the first piston (4) is arranged to compress air and transfer compressed air to the combustion chamber (10) via the transfer valve (8). The combustion chamber (10) is arranged to receive the compressed air from the priming cylinder (2) and fuel gas from the fuel supply port (16). The air and fuel gas are mixed to form an air/fuel gas mixture therein. The combustion chamber (10) is also arranged so that the air/fuel mixture is ignited therein to impart motion onto the second piston (14) and to facilitate the operation of the tool.

Abstract: A striking cylinder 6 is disposed within a body 1. A main air chamber 7 for reserving compressed air therein is disposed at an outside of the striking cylinder 6. A cylinder cap 8 for covering the striking cylinder 6 and the main air chamber 7 is fixed at an upper portion of the body 1. A lower portion of a cylindrical head valve 13, which opens and closes the main air chamber 7 and the striking cylinder 6 and is configured in a manner that upper and lower external diameters thereof are the same, is disposed at an outside of the striking cylinder 6. A cylindrical inner wall 10 and a cylindrical outer wall 11 are integrally formed at a lower surface of the cylinder cap 8. A piston stop 12 for defining a top dead center of a striking piston 5 is provided at an inside of the cylindrical inner wall 10. The head valve 13 is slidably provided between the cylindrical inner wall 10 and the cylindrical outer wall 11.

Abstract: A new and improved trigger-actuated control valve assembly for use within a fastener-driving tool wherein upper and lower control valve housing members are adapted to be fixedly mated together by a bayonet-type connection defined by a pair of diametrically opposed lug members disposed upon the lower valve housing member and a ledge structure defined upon the upper valve housing member. In addition, the trigger-actuated control valve assembly is fluidically connected to the upper control air chamber of the fastener-driving tool by externally disposed air passages which do not comprise complex compound angles and are therefore able to be integrally cast within the fastener-driving tool housing along with a cavity for housing the new and improved trigger-actuated control valve assembly.

Abstract: In a contact mechanism operable to cause an operation of a trigger to be effective by relatively moving upward with respect to a nose portion 4, a lower contact member 11 is held between two springs 23, 24 provided respectively at upper and lower positions near the nose portion 4, and a lower end of the lower contact member 11 is biased by the upper spring 23 so as to protrude downward from a lower end of the nose portion. Further, there is provided a switching device 28 which can switch between a first position in which the lower contact member 11 is held at an upper position against the upper spring 23, a second position in which the contact member is held at a lower position against the lower spring 24, and a third position in which a movement of the contact member is not restricted.

Abstract: A portable device for inserting fixing elements into predefined seats in a work piece, the portable device including a drive head; a drive rod extending downward from the drive head; a hollow nose piece slidably fit around a lower end of the drive rod, the nose piece being attached to the head and being movable vertically by a predetermined distance with respect to the head and the drive rod; a magazine mounted on the nose piece at a predetermined angle with respect to a lower face of the nose piece for feeding a first fixing element into a horizontal slot on the lower face the nose piece; and a single-blow drive mechanism providing a force produced by a pressurized fluid to an upper end of the drive rod when the drive mechanism is triggered. The force on the drive rod drives the first fixing element into the predefined seat in the work piece.

Abstract: An adapter configured for use in combination with a cap on a fuel cell having a closure formation, the cap having at least one leg portion and a corresponding foot extending from the leg, including a ring portion configured for engagement upon the closure formation of the fuel cell and including a top edge, a bottom edge, and a sidewall therebetween having an inner sidewall and an outer sidewall, a grooved portion defined by the inner sidewall, a convex gripping formation on the outer sidewall complementary to the closure formation, and at least one recessed formation adjacent the grooved portion for receiving the foot.

Abstract: A portable device for inserting fixing elements into predefined seats in a work piece, the portable device including a drive head; a drive rod extending downward from the drive head; a hollow nose piece slidably fit around a lower end of the drive rod, the nose piece being attached to the head and being movable vertically by a predetermined distance with respect to the head and the drive rod; a magazine mounted on the nose piece at a predetermined angle with respect to a lower face of the nose piece for feeding a first fixing element into a horizontal slot on the lower face the nose piece; and a single-blow drive mechanism providing a force produced by a pressurized fluid to an upper end of the drive rod when the drive mechanism is triggered. The force on the drive rod drives the first fixing element into the predefined seat in the work piece.

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: There is provided a surgical instrument including a handle having an elongated tubular member extending distally from the handle and one or more end effectors mounted on the distal end of the elongate tubular member. A driver is movably mounted within the handle and elongate tubular member in order to operate the end effectors. The surgical instrument includes an energy storage mechanism for storing and providing energy to move the driver and thereby actuate the surgical instrument. Various actuation mechanisms are disclosed which are operable on the energy storage mechanism to control the rate of release of the energy stored in the energy storage mechanism.

Abstract: A nail-driving device includes a housing, a trigger unit operable to fire a nail from the housing, and a resilient member disposed between first and second safety members. When a workpiece-engaging end of the first safety member is pressed against a workpiece such that a tip of the nail is moved into a nail hole in the workpiece, the first safety member pushes and moves the resilient member and the second safety member toward the trigger unit along a longitudinal direction until a stop-engaging portion and a trigger-engaging portion of the second safety member come into contact with a stop portion of the housing and the trigger unit, respectively, thereby preventing further movement of the second safety member along the longitudinal direction while allowing for movement of the first safety member toward the second safety member against the biasing action of the resilient member.

Abstract: A control device for hitting nails of a pneumatic nail gun includes a control valve. The control valve is arranged in a main air flow passage between a trigger of the nail gun and the main air valve. The control valve has valve cover to open or close the main air flow passage. A valve bolt is slidably disposed in the valve cover. The valve bolt can be driven by the high pressure air to move down. A safety slide pole is slidably disposed in a gun body for blocking or releasing the valve bolt to move down. Therefore, a position of the safety slide pole can reflect a height of a work part which to be nailed. The valve bolt can detect the height reflected by the safety slide pole to guide in the high pressure air from the main air flow passage to hit nails. Thus, the controlling stability is enhanced. The components are also simplified.

Abstract: In a gas combustion type driving tool, on a feed cylinder 21 included in a feed piston/cylinder device 7, there is provided a spring for normally urging a feed piston 22 in a feed direction. A portion of the feed cylinder 21 opposite to the spring is connected to a combustion chamber 5 through a gas conduit 26. In an intermediate portion of the gas conduit 26, there is provided a delay piston/cylinder device A. One end of a delay cylinder 27 is disposed on the combustion chamber 5 side, while the other end thereof is disposed on the feed cylinder 21 side. When a delay piston 28 is slidingly moved from one end of the delay cylinder 27 to the other end thereof by the pressure of combustion gas, air compressed within the delay cylinder 27 is supplied from the other end of the delay cylinder 27 to the feed cylinder 21.

Abstract: An actuator housing (20) for use on a pneumatic nailer (10), the actuator housing comprising a casing (22) defining a cartridge insertion opening (24), and a selectively activated actuator cartridge (50) which is inserted in the casing through the cartridge insertion opening. The actuator housing further comprises a releasable second fastening means (30, 69) which allows releasable extraction of the actuator cartridge from the casing. The actuator cartridge comprises an actuator head (54) for sealing engagement with the cartridge insertion opening of the casing and extending outwardly of the casing. The actuator cartridge also comprises a piston assembly (58) received within the casing, the piston assembly comprising a cylinder (100) defining a cylinder chamber (101) therein and a plunger (120) movably mounted within the cylinder chamber The actuator cartridge further comprises first fastening means (71, 104) to fasten the actuator head to the cylinder of the piston assembly.

Abstract: A nail gun switch mechanism includes a gun body and a trigger. The gun body has a trigger valve being disposed therein and a safety slidable bar being slidably disposed on. The safety slidable bar has a bottom part which extends outside of a hitting mouth at a bottom of the gun body. The trigger has a trigger lever being pivotably disposed therein, which is configured for driving the trigger valve to open. A top part of the safety slidable bar extends near to an end of the trigger and a swing arm is pivotably disposed on the top part of the safety slidable bar. The swing arm includes an arm part extending from a pivotal center of the swing arm and a push part extending from the arm part toward outside. The push part is configured to be switched to a first swing position and thus driven by the safety slidable bar to touch the trigger lever so as to operate the nail gun in a sequential actuation mode.

Abstract: An improved pneumatic tool design includes pneumatic motor chamber that houses a turbine. An air path directs compressed air into the pneumatic motor chamber. The air path includes an air inlet chamber that at least partially surrounds the pneumatic motor chamber. The air path also includes a motor inlet disposed in one side wall (e.g., the top wall) of the pneumatic motor chamber forward of the rear end plate thereof. The air path further includes at least one exhaust port disposed in an opposite side wall (e.g., the bottom wall) of the pneumatic motor chamber. A high-pressure seal, such as an o-ring, surrounds the pneumatic motor chamber and isolates the motor inlet, which is thus at a rear outer portion of the pneumatic motor chamber, from a forward outer portion of the pneumatic motor chamber.

Abstract: A housing for a power tool having a power source, includes a fuel cell chamber configured for attachment to the power source and dimensioned for operationally receiving a fuel cell in either one of a first orientation and a second orientation.

Abstract: Disclosed is a pneumatic tool for use in extreme cold without the risk of freezing of the pressure providing the air: air tubing has electrical heating coils embedded in the walls of the tubing, the connectors between the sections of the hoses.

Abstract: A protection device of a nail driver for preventing from triggering in a state of ineffective actuation comprises a trigger device including a trigger, a trigger sheet, and an ejecting rod; the trigger being installed at an inner side of the body of the nail driver; a lower end of the trigger sheet being elastically pivoted to an inner side of the trigger; thus, the trigger sheet elastically resisting against the ejecting rod; therefore, when the trigger is pressed, the trigger sheet will drive the ejecting rod to pivotally rotate; a safety device including a sliding unit, and a driving rod; the sliding unit being slideably installed at a lower side of the body; one end of the sliding unit extending to a shooting head of the nail driver; the driving rod being elastically pivoted at another end of the sliding unit; the driving rod is a unidirectional confinement structure.

Abstract: A safety structure of a nail gun includes a trigger set including a trigger and a plate. The trigger is pivoted on a main frame to be moved toward a trigger device. The plate is pivoted on the trigger between the trigger and the trigger device. A linkage is pivoted on the main frame to press a free end of the plate. A spring urges the linkage to move back the linkage when the linkage is moved away from the trigger. A tappet is pivoted on the main frame to be moved by the linkage. An arm is on the muzzle for reciprocation, which has an extending portion extending to a front of the trigger. A cover is pivoted on the extending portion of the arm and covers the tappet and the linkage. The linkage leans on the cover so that the cover is moved by the linkage.

Abstract: A method for operating a driving tool that can be employed for driving fasteners, such as nails.

Abstract: A driving machine has a work contact portion with an end face to be contacted with a member to be fastened that is provided in a push lever, and a probe movably provided on the work contact portion, wherein the probe is energized in the driving direction by a spring to thereby project its leading end portion from the end face of the work contact portion. When the main body of the driving machine is pressed against a work, the probe is retreated from the driving passage of a fastening member when a tripper switch is operated.

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

Abstract: In an air nail gun, a stop ring is movably mounted around a movable seal member, which controls the supply of a compressed air into an air chamber to force a piston and a firing pin and to further drive a nail out of the air nail gun, having an upper inside wall disposed in contact with the movable seal member in an airtight status, a lower inside wall, and an inside annular flange disposed between the upper inside wall and the lower inside wall and protruding toward the movable seal member such that when the movable seal member is returned upon each nail firing action the stop ring is kept in position to prohibit the compressed air from moving through the movable seal member, and the movable seal member carries the stop ring toward a top block when an outside annular flange of the movable seal member touches the inside annular flange of the stop ring.

Abstract: An adjustable depth of drive apparatus is provided for use on a fastener driving tool including a nosepiece defining a fastener passageway, and a driver blade reciprocating in the passageway for driving fasteners sequentially fed from a magazine into a workpiece. The depth of drive apparatus includes a depth of drive adjustment element being reciprocally movable relative to an end of the nosepiece, the depth of drive adjustment element defining a nosepiece chamber dimensioned for receiving the nosepiece and including a driver blade stop configured for receiving an end of the driver blade to terminate vertical driving motion of the driver blade.

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 is directed to a pneumatic tool actuation device comprising a housing configured to be attached to a pneumatic tool, a piston slidably moveable within a drive chamber formed within the housing and an air inlet chamber formed within housing and configured to accept a pressurized gas and direct it to the drive chamber. The piston further comprises an O-ring disposed in an annular groove formed in the piston and forming a seal between the piston and the drive chamber. The housing is removably attached to an opening near a trigger valve pin. The air inlet chamber is operably connected to a hose through which a pressurized gas travels and enters the housing to move the piston. The movement of the piston directly actuates the trigger valve pin located in the pneumatic tool.

Abstract: A device for applying insulated fasteners to a substrate is disclosed. The device comprises a housing that includes a fastener recess and an ejection recess, and the fastener recess is configured to accommodate insulated fasteners. The device further comprises a powered actuator that includes an ejection member that moves over a range of positions. The ejection member permits one of the insulated fasteners to enter the ejection recess in a retracted position, and the ejection member forces the one of the insulated fasteners to leave the ejection recess in an extended position. A power connector operatively connects the powered actuator to a power source to provide power to move the ejection member. A manual actuator is operatively disposed between the power source and the powered actuator to selectively provide power from the power source to the powered actuator.

Abstract: A pneumatic fastener includes a housing and a handle coupled to the housing. The handle defines an inlet channel for delivering compressed gas to the housing. A trigger valve is in communication with the inlet channel and configured to actuate the pneumatic fastener. A fastener driving assembly is disposed within the housing. The fastener driving assembly includes a cylinder and a piston that reciprocates within the cylinder to drive a fastener. A valve piston is coupled to the fastener driving assembly. Actuation of the valve piston causes compressed air to drive the piston within the cylinder to drive the fastener. An outer cap is coupled to the housing and an inner cap is disposed at least partially within the outer cap. The inner cap includes an opening in communication with the trigger valve for porting the compressed air to a region above the valve piston.