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 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: A pneumatic nail gun includes a gun body, a connecting mechanism, an acting valve, a trigger, a safety valve, and a trigger valve. The gun body includes a safety compressed air inlet and a firing compressed air inlet. The connecting mechanism is slidably disposed on the gun body. The acting valve is connected to the connecting mechanism. The trigger is connected to the gun body. The safety valve is connected to the acting valve for allowing a safety compressed air coming from the compressed air source to drive the acting valve to move the connecting mechanism forwards when the trigger is pulled. The trigger valve releases a firing compressed air coming from the compressed air source to project at least one nail only when the trigger is pulled, a workpiece blocks the connecting mechanism, and the trigger opens the trigger valve.

Abstract: A combustion type power tool capable of avoiding wasteful injection of combustible gas from a gas canister even if an unintentional operation of the push lever takes place, and capable of avoiding wasteful electric power consumption even if a battery used as power supply remains set in the tool. While the tool is not being used, a stop unit is set at a stop position, preventing a gas canister from injecting gas, and while the tool is being used, the stop unit is set at a release position, allowing the gas canister to inject gas as a result of movement of a combustion chamber frame.

Abstract: The present invention includes various embodiments directed to apparatus and methods surrounding a fastener device. In particular embodiments, the fastener device is a quick charging and discharging device that includes a solenoid, a fastener striker, a flash capacitor, and a control circuit. Other novel features of the fastener device exist. In particular embodiments, the present invention also includes apparatus and methods related to deforming staples for securing conduit and the like, and staple insulation and insulated staples that may be discharged by the fastener device. The insulation may be provided in an ordinary staple strip for use in the fastener device. Each insulation form may include deformation voids to assist the adaptation of the insulation about a target object that is being secured by the insulated staple.

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 apparatus includes a motor with an output shaft. The motor is shiftable between a de-energized condition in which it can not be actuated to move the output shaft, and an energized condition in which it can be actuated to move the output shaft. The apparatus further includes a nose and a control device. The nose is shiftable between differently configured conditions, including a first condition for guiding a fastener driven by the output shaft, and a second condition for releasing a fastener that jams when the nose is in the first condition. The control device maintains the nose in the first condition while the motor remains in the energized condition.

Abstract: A trigger valve includes a valve base, a valve rod, a sliding portion and a shuttle valve. The valve base is disposed at a gun body of the nail gun between a compressed chamber and a main air valve of the nail gun. The valve rod is capable of being driven by a trigger of the nail gun to move so as to open or close high pressure air from the compressed chamber into the valve base. The sliding portion is capable of being driven by high pressure air to move to cause a safety slide rod of the nail gun producing a displacement along a hitting-nail direction. The shuttle valve is capable of being driven to move under control of the displacement of the sliding portion so as to open or close high pressure air from the valve base into the main air valve.

Abstract: A pneumatically operated power tool includes an outer frame, a driving components, a pressure reduction valve, and a switching valve. The outer frame has a compressed air intake portion and defines therein a compressed air chamber. The driving components are disposed in the outer frame and are driven by a compressed air in the compressed air chamber. The pressure reduction valve defines a pressure receiving space and allows a compressed air to flow from the air intake portion to the compressed air chamber and to the pressure receiving space. The switching valve is movable between a first position where the compressed air flows from the compressed air intake portion to the pressure receiving space, and a second position where a communication between the compressed air intake portion and the pressure receiving space is blocked.

Abstract: A gas combustion type coil nailer is provided with (a) a main body (1) which is provided with combustion chamber; (b) a head part (3) which is disposed on the front surface of this; and (c) a magazine 4 which is disposed on the bottom surface of the head part (3) so that it can be attached and detached easily. A coil shaped nail connecting body is loaded onto the magazine (4). The head part (3) is provided with (d) a guide tube (35) through which the rod (17) and the nail n pass; and (e) with a feed motor (47). The nail connecting body N is fed to the guide tube (35) by a feed gear which is driven by the feed motor (47). Power is supplied to the feed motor (47) from a battery. The rod (17) is driven and the nail is fed by separate motive forces so that the nail can be fed reliably without adversely affecting the accuracy and reliability of the driving capacity of the rod (17).

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

Abstract: A fastener driving apparatus includes a motor with an output shaft. The motor is shiftable between a de-energized condition in which it can not be actuated to move the output shaft, and an energized condition in which it can be actuated to move the output shaft. The apparatus further includes a nose and a control device. The nose is shiftable between differently configured conditions, including a first condition for guiding a fastener driven by the output shaft, and a second condition for releasing a fastener that jams when the nose is in the first condition. The control device maintains the nose in the first condition while the motor remains in the energized condition.

Abstract: A nailing depth adjustable device for a nail gun includes: a barrel-extending part mounted slidably on a barrel; an interconnecting part extending from the barrel-extending part and defining a driving surface; a support; and a telescopic adjusting unit mounted movably on the support and including a first part and a second part that is coupled movably to the interconnecting part, that defines a driven surface, and that engages threadedly the first part so as to be rotatable relative to the first part and the interconnecting part and therefore to be movable relative to the first part and the interconnecting part, thereby permitting adjustment of the distance between the driving and driven surfaces.

Abstract: A fastener-driving tool has a cam-actuated pneumatic switch mechanism system operatively incorporated thereon which is adapted to control the timed driving or discharge of fasteners out from a hand-held fastener-driving tool and into a substrate at predeterminedly spaced positions with respect to each other. The arrangement is particularly adapted for use in connection with the driving of fasteners into corner regions of structural workpieces, although the same may also be used to drive fasteners into flat planar surfaces.

Abstract: A bumper of a driving tool has a cylindrical overall shape and also has a space portion expanding downward therein. The bumper is provided with an upper portion, an intermediate portion, and a lower portion. A normal inclined-surface, in which an outer diameter becomes larger from an upper end of a full height of the bumper toward a slightly upper position of the intermediate portion, is formed at a periphery of the upper portion. A bulging-out portion haying the largest outer diameter in the bumper is bulged out, at a periphery of the intermediate portion. A reverse inclined-surface, in which the outer diameter becomes smaller toward downward, is formed at the periphery of the lower portion.

Abstract: An assembly that includes first and second housing members, a gasket and a plurality of bolts that exert a clamp force to clamp the gasket between the first and second housing members. The gasket includes a plurality of tab members that engage the interior of one or both of the first and second housing members. The gasket tabs can resist a force exerted by a pressurized fluid within one or both of the first and second housing members. A method for assembling and operating an article is also provided.

Abstract: A fastener driving device includes various interconnected systems within a device housing for efficiently regulating and transferring compressed gas provided by user-replaceable cartridges to drive a fastener securely into a workpiece. An improved cartridge containment system is provided for loading and securing compressed gas cartridges. An improved gas management system is provided, including an improved multi-function regulator, for managing gas flow. An improved valve system is provided for controlling gas flow, including an improved valve module. An improved drive system is provided for efficiently using compressed gas to drive fasteners.

Abstract: In a linkage mechanism between a trigger valve and a control valve in a nail gun, 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. A valve stem of the trigger valve is extended in the outer trigger. An inner trigger is pivotably connected to a bottom end of the valve stem. 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.

Abstract: A gas can mounting structure installed in a gas nail gun having a vertically movable safety rod is disclosed to include a gas can holder for accommodating a gas can, a positioning mechanism mounted in the gas can holder and having two side plate members for guiding insertion of a gas can into the inside of the gas can holder into position, and a spring-supported roller rotatably and slidably coupled between the two side plate members for stopping against the gas can being loaded in the gas can holder to prevent gas leakage during installation of the gas can.

Abstract: A gas can mounting structure includes a holder frame formed of a part of a gas-operated nail gun and defining an accommodation chamber for accommodating a gas can, a cover pivoted to the holder frame and turnable relative to the holder frame to close/open the accommodation chamber, and a control switch mounted in the holder frame and movable between a first position where a stop block of the button of the control switch is stopped at a stop block at the cover to lock the cover in the close position and a second position where the stop block of the button is released from the stop block of the cover for allowing the cover to be biased from the close position to the open position for easy loading/unloading of a gas can.

Abstract: An fastener driving apparatus has an actuator linked to a work contact element so as to move a trigger plate when the work contact element retracts. A button is movable back and forth along a transverse axis when depressed from its opposite ends. The actuator has a bump mode surface and a sequential mode surface at different locations along the axis, and is moveable transversely back and forth between a bump mode arrangement in which the bump mode surface can move the trigger plate and a sequential mode arrangement in which the sequential mode surface can move the trigger plate. The button is linked to the actuator so as to move the actuator to the bump mode arrangement when depressed from one end, and to move the actuator to the sequential mode arrangement when depressed from the opposite end.

Abstract: A combustion type driving tool including a combustion chamber frame which is provided in a housing, and can move in one direction and in the other direction thereby to define a combustion chamber when it has moved in the other direction, moving means which can select either of a manual operation valid state and a manual operation invalid state, and permits the combustion chamber frame to move in the other direction by manual operation, only in the manual operation valid state, and a link mechanism.

Abstract: A nail gun switch mechanism includes a gun body and a trigger. A 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. 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 or a second 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 or a contact actuation mode.

Abstract: A pneumatic nail gun includes a gun body, a connecting mechanism, an acting valve, a trigger, a safety valve, and a trigger valve. The gun body includes a safety compressed air inlet and a firing compressed air inlet. The connecting mechanism is slidably disposed on the gun body. The acting valve is connected to the connecting mechanism. The trigger is connected to the gun body. The safety valve is connected to the acting valve for allowing a safety compressed air came from the compressed air source to drive the acting valve to move the connecting mechanism forwards when the trigger is pulled. The trigger valve releases a firing compressed air came from the compressed air source to project at least one nail only when the trigger is pulled, a workpiece blocks the connecting mechanism, and the trigger opens the trigger valve.

Abstract: An automatic nailing assembly includes lower and upper skeletal frames for attachment to a pneumatic nailer; front and rear wheels mounted on the bottom frame; a linkage defined by pulleys or sprockets mounted on the frames interconnected by an endless belt or chain and driven by the rear wheel; a cam wheel for rotation by the pulley or sprocket on the upper frame; and a lever operated by the cam wheel to actuate a trigger for causing nails to be ejected at intervals from the nailer as the assembly rolls along a workpiece.

Abstract: A hand-held power tool includes a pneumatic percussion mechanism (20) having a driving member (22) reciprocating in the guide tube (21), a percussion member (23) driven by the driving member (22), and an air spring (24) located between the driving member (22) and the percussion member (23) transmits a reciprocating movement of the driving member (22) to the percussion member (23), The hand-held power tool further includes a motor-driven elongate swashplate member (29) for reciprocating the driving member (22) a displacement stroke of which is adjusted by an adjusting member (31) displaceable along a longitudinal extent of a swashplate member (29) for adjusting a swashplate angle that determines the displacement stroke of the driving member (22).

Abstract: A fastener driving apparatus includes a power source, a control circuit, a motor, a first cylinder, a first piston, a linear motion converter, a second cylinder, a second piston, an anvil, a valve arrangement and at least one sensor. During a compression stroke, the first piston is configured to compress gas in a first cylinder to a predetermined pressure. At the predetermined pressure, the valve arrangement assumes an open position for communicating the compressed gas to the second cylinder, thereby causing the second piston to move linearly and enabling the anvil to drive the fastener into the workpiece. During a return stroke, at a predetermined position of the first piston in the first cylinder, the valve arrangement assumes the open position for communicating a vacuum created in the first cylinder to the second cylinder and thereby causing the second piston and the anvil to retract to their initial positions.

Abstract: A fastener driving apparatus includes a power source, a control circuit, a motor, a first cylinder, a first piston, a linear motion converter, a second cylinder, a second piston, an anvil, a valve arrangement and at least one sensor. During a compression stroke, the first piston is configured to compress gas in a first cylinder to a predetermined pressure. At the predetermined pressure, the valve arrangement assumes an open position for communicating the compressed gas to the second cylinder, thereby causing the second piston to move linearly and enabling the anvil to drive the fastener into the workpiece. During a return stroke, at a predetermined position of the first piston in the first cylinder, the valve arrangement assumes the open position for communicating a vacuum created in the first cylinder to the second cylinder and thereby causing the second piston and the anvil to retract to their initial positions.

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: A rapid-action connection element for a compressed air hose (3) includes a filter (5) located in the discharge casing (4) for sealing a flow cross-section, a flow-through pressure piston (7) extending, at least partially into the discharge casing (4) and displaceable, within limits between outward position remote from the filter (5) in which the pressure piston (7) is sealed with respect to the discharge casing (4), and an inward position adjacent to the filter (5) in which the pressure piston (7) is open with respect to the discharge casing (4) for flow therebetween, and a flow-through rapid-action coupling member (6a) connected with the pressure piston (7).

Abstract: An air injection mechanism for nail guns includes a gun body having an air chamber; a valve base having a rod hole disposed in the gun body; a movable valve rod, one end of the valve rod engages with the rod hole and extends out of the gun body to form a press end, and another end of the valve rod extends through the air chamber and fixes to another side surface of the gun body, the valve rod and the rod hole cooperate to form an air guiding gap therebetween, the valve rod includes a ringed pushing surface; an air guiding passage formed in the valve rod, which includes an air inlet port connecting to the air guiding gap and an air injection port connecting to environment; an O-ring disposed in the rod hold for controlling the flux of the air that discharged form the air injection port.

Abstract: A cooling system for combustion-powered fastener-driving tools comprises the use of cooling fin structures upon the external wall members of the combustion chamber and cylinder. Fluid flow paths are constructed between internal wall portions of a surrounding tool housing and the cooling fin structures mounted upon the external wall members of the combustion chamber and cylinder. In this manner, ambient cooling air is passed over and through the cooling fin structures whereby the combustion chamber and cylinder components of the fastener-driving tool are efficiently cooled such that the temperature level of the fastener-driving tool is maintained at a desirable temperature level despite the substantial amount of heat normally generated during each combustion cycle.

Abstract: A trigger valve includes a valve base, a valve rod, a sliding portion and a shuttle valve. The valve base is disposed at a gun body of the nail gun between a compressed chamber and a main air valve of the nail gun. The valve rod is capable of being driven by a trigger of the nail gun to move so as to open or close high pressure air from the compressed chamber into the valve base. The sliding portion is capable of being driven by high pressure air to move to cause a safety slide rod of the nail gun producing a displacement along a hitting-nail direction. The shuttle valve is capable of being driven to move under control of the displacement of the sliding portion so as to open or close high pressure air from the valve base into the main air valve.

Abstract: An apparatus and method for adjusting the handle position of a pneumatic fastener handle. The pneumatic fastener includes a base, a main body, and a magazine for carrying fastening members. The main body and magazine are fixed to the base. A pneumatic inlet is mounted onto the main body. A handle assembly is mounted on the main body of the pneumatic fastener. The handle assembly includes a housing having a hollow recessed area. The housing can have an aperture through a lateral side configured to receive a retaining member. A handle extends partially within the housing and is configured to move between at least a first position and a second position, different from the first position. When the handle is in a desired position, the retaining member secures the handle in place within the housing.

Abstract: When gas is explosively burnt within a combustion chamber, a striking piston is impulsively driven to drive out a fastener from a nose portion. A gas tube is provided between the combustion chamber and a feed cylinder which accommodates a feed piston that reciprocally moves a feed claw engaged with and disengaged from connected fasteners to a nail feed direction for feeding to the nose portion side and an evacuation direction in opposite thereto. A check valve having a restriction hole is disposed on the way of the gas tube so as to be opened and closed. The check valve is normally urged by a spring to a closed direction and opens against the force of the spring by the gas pressure from the combustion chamber.

Abstract: A gas nail gun includes a trigger, a pivoted baffle plate, and a liftable safety rod. When the safety rod is kept in the non-triggering position and not stopped against the workpiece, the baffle plate stops the trigger from operation. When the safety rod is stopped against the workpiece and lifted to the triggering position, the baffle plate is biased, allowing the trigger to be pressed. When the trigger is pressed and stopped against the baffle plate, the trigger is hooked up with a hook of the baffle plate so that the baffle plate is prohibited from biasing upon stoppage of the safety rod against the workpiece, avoiding accidental triggering of the trigger.

Abstract: An apparatus and method of installing a hardwood floor employs a pneumatic or other impact fastener tool to drive staples, cleats, nails or other fasteners at a prescribed angle into and through the tongue of a solid or engineered hardwood flooring board having a standard profile and into a subfloor. The tool and method employs at least one inertia braking member, such as pads formed of rubber, foam, cork or other materials, that cushion the impact of a driving blade on the fastener and slow the final insertion of the fastener into the wood. Damage to the wood, such as splitting, shearing, pinching or puckering is prevented and overwood-underwood problems that are related to pinching and puckering do not arise. The inertia braking members are positioned inside a cylinder in which the driving piston and blade move and are easily replaceable when worn.

Abstract: A magazine includes a feeding tray having a nail path to allow passage of one nail strip and a loading space in spatial communication with the nail path and that is adapted for accommodating a plurality of stacked nail strips, a tray cover coupled to the feeding tray, and a first pusher unit connected detachably to the feeding tray and adapted to press against an uppermost one of the nail strips so as to push a lowermost one of the nail strips into the nail path, and a second pusher unit. When the lowermost one of the nail strips is moved into the nail path, it is pushed toward the nail outlet by the second pusher unit. The tray cover is slidable to uncover at least one of the nail path, thereby permitting an additional nail strip to be placed into the nail path.

Abstract: A nailing machine includes a contact rod substantially in a straight shape and an operating dial. The contact rod is slidably and rotatably supported by a nose portion. The operating dial is slidably penetrated to be inserted by the contact rod, rotatably provided integrally with the contact rod and provided rotatably and by being restricted from being moved in an up and down direction with respect to the nose portion. A length of projecting the contact member in a direction of a front end of the nose portion is adjusted by rotating the contact rod by way of the operating dial.

Abstract: A pneumatic tool includes a tool body, a nose part for ejecting a nail, which is provided in a lower part of the tool body, an air chamber for storing compressed air, which is provided in the tool body, an air supply pipe for supplying the compressed air from an air supply source to the air chamber, an air duster, an air duster pipeline connected to an air outlet of the air duster, and an air duster valve for controlling supply of the compressed air to the air duster pipeline.

Abstract: A driving machine includes a cylinder, a piston fitted into the cylinder in a reciprocatingly movable manner, a driver connected to the piston, a bumper provided in the bottom portion of the cylinder, a housing, a return air chamber, a fastening member feed piston movable backward or forward by supplying compressed air within the return air chamber from an air chamber passage hole 9 through air passages and to a fastening member feed cylinder or discharging such compressed air from the fastening member feed cylinder, a return spring for energizing the fastening member feed piston, and a feed pawl mounted on the leading end of the fastening member feed piston. In the driving machine, between the return air chamber and the fastening member feed cylinder, a filter portion is provided having a projection shape and small holes.

Abstract: A tool (12) has a body (14) having an opening (16) forming a barrel (18) which has a top and a bottom (20 and 22), an opening (30) at the bottom (22), and a pressure input (44) for fluid communication. The barrel (18) receives a piston (24) and a magnet (23) which is contiguous with the pressure input (44). An actuator pin tube (26) is received in the opening (30) at the bottom (22) of the barrel (18), and an actuator pin (38) is engaged in the tube (26). A second opening (28) may be disposed in the top (20). A kit (110) containing the tool (12), hose (94), cartridges (84) and a pump (P). A method for using the tool (12) is also contemplated hereby. Multiple tools (12) may be detonated at the same time by hooking them up to a manifold (95 or 95?).

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: An air duster duct 18 is formed to branch off at an intermediate portion along the length of an air duct 17 which connects a compressed air supply source 16 with a pneumatic tool. A valve mechanism having a selector valve 25 and an operating device 35 is provided at the branch portion. The sector valve 25 can shift to a first position where the selector valve 25 opens an upstream side duct 17a which communicates with the air supply source 16 to a downstream side duct 17b which communicates with a nailing machine and shuts the upstream side duct 17a relative to the air duster branch duct 18 and a second position where the selector valve 25 shuts the upstream side duct 17a relative to the down stream side duct 17b and opens the upstream side duct 17a to the branch duct 18. The selector valve 25 is operated from the outside by the operating device 35.

Abstract: A gas can mounting structure installed in a gas nail gun having a vertically movable safety rod is disclosed to include a gas can holder for accommodating a gas can, a positioning mechanism mounted in the gas can holder and having two side plate members for guiding insertion of a gas can into the inside of the gas can holder into position, and a spring-supported roller rotatably and slidably coupled between the two side plate members for stopping against the gas can being loaded in the gas can holder to prevent gas leakage during installation of the gas can.

Abstract: A fastening tool with a magazine assembly for holding and dispensing collated fasteners. The magazine assembly includes a canister and a door that is hingedly coupled to a nosepiece. The canister includes a stationary portion and a movable portion that may be moved relative to the stationary portion to permit access to an interior of the canister, e.g., for loading the fasteners into the canister. The door cannot be moved from a closed position to an open position and vice versa without first opening the canister. A method for loading a magazine is also provided.

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 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 actuates a trigger located on the pneumatic tool.

Abstract: A tool with a driver, a structure, a motor assembly and a bumper. The driver has a plurality of bumper tabs, each of the bumper tabs having an arcuate first contact surface that is formed about a tab axis, each tab axis being generally perpendicular to a translation axis about which the driver translates. The motor assembly is coupled to the structure and configured to selectively translate the driver along the translation axis. The bumper abuts the structure and includes a plurality of bumper members. Each bumper member is located in-line with an associated one of the bumper tabs and includes an arcuate second contact surface that is formed about an axis that is generally orthogonal to the translation axis and the tab axis.

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 nailing force-adjusting device for a pneumatic nail gun includes: a valve seat including a sleeve member sleeved on a cylinder, inner and outer flanges dividing an air-storing space between the cylinder and a gun housing into front and rear storing halves, the sleeve member defining a fluid passage for fluid communication with the rear storing half, the inner flange being formed with a valve opening in fluid communication with the fluid passage; and a sealing body formed with an axial through-hole and rotatable between a blocking position, in which the valve opening is blocked by the sealing body, and an unblocking position, in which the axial through-hole communicates fluidly with the valve opening.