Abstract: A gas container driving device for use in a gas nail gun includes a main body and a cap member. The main body is connected to a gun body of the gas nail gun and has a lever section. When a sleeve is moved relative to the gun body for sealing a combustion chamber, the lever section is pushed and moved by the sleeve to push a gas container received in a receiving space of the gun body for releasing gas into the combustion chamber. The cap member is pivoted to the main body and engages removably the gun body for sealing the receiving space during operation of the main body.

Abstract: A pneumatic nail gun includes a nail-gun main body, a first trigger, an auxiliary handle, an insurance unit, and an auxiliary insurance mechanism. The first trigger is disposed in the nail-gun main body. The auxiliary handle is extended from the nail-gun main body. The insurance unit is disposed at a nail outlet of the nail-gun main body and being capable of shifting between a non-firing location and a location to be fired. The auxiliary insurance mechanism includes a second trigger and an insurance stopper element. The second trigger is disposed on the auxiliary handle. The insurance stopper element is disposed in the nail-gun main body. The insurance stopper element is capable of shifting between a first location and a second location as controlled by operation of the second trigger so as to selectively block a shifting path of the insurance unit.

Abstract: A nail gun includes a main body defining an axis, a magazine, a connector body connected to the main body and the magazine, a fixed seat connected to one of the magazine and the connector body and having at least one abutment surface configured to abut against a workplace, and a pressing assembly loosenably fixing the fixed seat to the one of the magazine and the connector body. The pressing assembly is operable between a loosened state and a tightened state. When the pressing assembly is in the loosened state, the fixed seat is rotatable relative to the one of the magazine and the connector body such that an angle of the abutment surface of the fixed seat relative to the axis is selectively positionable.

Abstract: A nailer includes a base seat and at least one abutment member. The base seat has at least one engaging structure. The abutment member has at least two engaging portions that are spaced apart from each other, and a connecting portion that is connected between the engaging portions. The engaging structure engages detachably one of the engaging portions. Each of the engaging portions has an engaging surface that is connected to the connecting portion and that abuts against the engaging structure. The other one of the engaging portions further has an abutment surface that is opposite to the engaging surface thereof, and that is for abutting against the object.

Abstract: A nail gun includes a body, a valve unit, a nail striking member and a detector. The body has a nail path, an air chamber, and an intake chamber guiding flow of air into the air chamber. The nail striking member is drivable by air pressure in the air chamber for striking a nail in the nail path. The valve unit is operable to switch between unblocking and blocking states to respectively permit and prevent fluid communication between the intake chamber and the air chamber. The detector is connected pivotally to the body, and is contactable with the valve unit such that, when there is no nail in the nail path, the valve unit is controlled by the detector to be in the blocking state.

Abstract: An air source controlling device for a pneumatic nail-gun includes a body, a choke valve and a switch. The body includes a controlling chamber for connecting a compressed air source, an air passage for communicating the controlling chamber and the pneumatic nail-gun, a switch channel communicating the air passage and an accommodation space, and an air vent hole communicating the accommodation space and an external environment. The choke valve is disposed in the controlling chamber and is switchable between a communicating status and a non-communicating status for controlling the opening or closing between the controlling chamber and the air passage. The switch includes an actuating member slidably disposed in the switch channel and the accommodation space without covering the air vent hole. A sealing member is disposed on the actuating member and is sealed with the switch channel. The actuating member activates the choke valve.

Abstract: A firing-operation totalizing device for a gas nail gun includes two pressure areas, a pressure feedback unit mounted in a body, and an electric control unit. The pressure areas are constituted by an interior of a combustion chamber and an interior of a cylinder body. The pressure feedback unit outputs a pressure signal in response to each pressure change of at least one of the pressure areas. The electric control unit includes a control circuit that totalizes the number of the firing operations based on the pressure signals received thereby. As such, the totalized number of the firing operations is increased only when a pressure change of the at least one of the pressure areas occurs due to an explosion to totalize accurately the number of effective firing operations.

Abstract: In a fastener feeding device for a driving tool, in response to a rearward displacement of a contact arm, a carrier member is displaced from an upper position to a lower position, and a claw end of a claw member is dragged downward. Once a first one of fasteners is struck out of a striking path, a connection strip for holding the fasteners is lifted by a biasing force of a return biasing member while the carrier member is displaced from the lower position to the upper position.

Abstract: An oscillation reducing suspension device for a fan motor of a combustion-powered tool includes a holding web member sleeved on the fan motor, upper and lower retaining members disposed to secure the holding web member on the fan motor, upper and lower damping units which are respectively brought into abutting engagement with upper and lower surfaces of the holding web member, and an upward-movement restricting member securely mounted on an upper major surface of a cylinder head. Due to engagement between the restricting member and the upper damping unit, the upper and lower damping units can absorb impact resulting from oscillating movement of the fan motor.

Abstract: In a combustion-type power tool, when a safety unit is pressed against a workpiece to cause a valve sleeve to close a combustion chamber, a power region of a lever is actuated to permit a weight region of the lever to displace a holding member holding a fuel canister from a normal position to a pressed position. When the holding member is in the pressed position, a valve stem of the fuel canister is forced into pressing engagement with an intake port of a fuel canister actuation unit to permit delivery of a measured dose of fuel to the combustion chamber through the intake port.

Abstract: A nail magazine for a power nail-driving tool includes an elongated magazine unit and a leaf spring unit which includes an elongated body and first and second guiding members. The elongated body has a rearward end fixed to the elongated magazine, and a forward end which is movable between a blocking position and a yielded position. The first guiding member has a barrier shoulder configured to block loading movement of a nail strip when the nail strip is loaded in a wrong orientation. The second guiding member has a ramp-up region configured to permit the nail strip to depress the forward end to the yielded position when the nail strip is loaded in a correct orientation.

Abstract: A metering valve includes a valve main body consisting of a body and a cover, a sliding rod and an elastic member. The body has a positioning hole, a metering chamber, a containing space, and two sealing pads disposed on two end portions of the metering chamber. The containing space is for assembling the gas cylinder A groove is disconnected with the positioning hole, the metering chamber and the containing space. The sliding rod has two ends, wherein a gas channel is formed from one end toward an inner of the sliding rod, the sliding rod has a flange and a through hole, the through hole under the flange is for connecting the gas channel, and the sliding rod blocks a gas from the metering chamber by cooperating with the sealing pads. The elastic member in the groove is connected to the flange and the groove.

Abstract: A bar connecting apparatus is used for firing a string of clips one at a time to connect two intersecting bars together. The bar connecting apparatus includes: a main body having a front end portion formed with an ejection opening; a driving unit including a hammer disposed in the main body, and a drive disposed in the main body for reciprocating the hammer; and a magazine unit including a magazine connected to the main body and adapted for storing the clips, and a clip pushing device for pushing one of the clips into the ejection opening so that a portion of the one of the clips extends outwardly from the main body through the ejection opening.

Abstract: The present invention is to provide a nailing depth adjusting and positioning device for a power nailer in order to protect the distal thread and stabilize the operation. The device having a circular groove formed in a rotatable member and a retainer ring located in a link in order to prevent the rotatable member from being overly rotated (to protect the distal thread), and the disengagement of the device, and having a steel ball and a spring mounted in the rotatable member, the steel ball cooperates with the several gaps in the safety device to locate the rotatable member, such that the starting distance of the device may stably be adjusted. Thereby, the depth of nailing and the position may be successively maintained.