A fastener identifying unit for use within an installation tool, has one or more movable jaws associated with a barrel. At least one jaw includes an identification member that changes position when the respective jaw moves or is actuated. The jaws are movable relative to the barrel and define a fastener receiving section, which may be an interface between a pair of jaws. The jaws are biased in a relative direction maintaining the identification member in a first position when a fastener is not present in the barrel. When a fastener is inserted into the barrel, the tip is received by the receiving section, which thereby causes the one or more movable jaws to move against the bias and the identification member to shift to a second position. The identification member is viewable by an installer in the second position to notify the installer of the presence of the fastener.

A fastener-driving tool has a housing including a combustion chamber, where the combustion chamber generates combustion for driving a fastener, and a processor associated with the housing and in communication with the combustion chamber. The processor is configured to cause an initial combustion in the combustion chamber and cause a fastener to be driven when a first actuation event and a second actuation event occur, and is configured to cause at least one subsequent combustion in the combustion chamber and cause at least one additional fastener to be driven when only the first actuation event occurs.

A gas spring-powered fastener driver includes a cylinder, a moveable piston positioned within the cylinder, and a driver blade attached to the piston and movable therewith between a top-dead-center (TDC) position and a driven or bottom-dead-center (BDC) position. The driver blade includes a body and a plurality of teeth extending therefrom. The driver blade defines a driving axis. The gas spring-powered fastener driver further includes a lifter operable to move the driver blade from the BDC position toward the TDC position. Each one of the plurality of teeth includes a contact surface engageable with the lifter. The contact surface of each tooth defines an included angle with the driving axis that is greater than 90 degrees.

A pneumatic tool includes an air chamber; and a pressure adjusting mechanism which adjusts a pressure of a compressed air in the air chamber. The pressure adjusting mechanism includes a valve body which opens and closes a flow path that communicates the air intake and the air chamber; an elastic body which exerts an urging force to the valve body; a support part which supports an end of the elastic body; a pressure receiving member which receives air pressure in the air chamber and presses the elastic body in a direction of closing the flow path; and a load reducing mechanism capable of switching the urging force of the elastic body acting on the valve body between a normal state and a load reduction state in which the urging force smaller than the normal state is exerted.

A driving tool including a timer assembly less susceptible to heat operates at a stable operating speed. The driving tool includes a trigger, a contact arm, and a timer assembly that operates in response to the trigger moving to a trigger-on-position with the contact arm remaining at an arm-off-position. The timer assembly includes a flywheel rotatable in response to the trigger moving to the trigger-on-position, and a contact restrictor movable between an unlock position at which the contact restrictor allows the contact arm to move to an arm-on-position and a lock position at which the contact restrictor restricts the contact arm from moving to the arm-on-position. The contact restrictor takes a predetermined period to move from the unlock position to the lock position in response to the trigger moving to the trigger-on-position. The predetermined period is defined by an inertial force generated by rotation of the flywheel.

Various embodiments of the present disclosure provide a battery-powered stapling tool. In one embodiment, the stapling tool includes a drive wheel, a cam drivable by the drive wheel in a first rotational direction from a first position to a second position and back to the first position to carry out a staple-driving process, a motor operably connected to the drive wheel to drive the drive wheel, a lifting element defining a slide in which the cam is received, and an ejector connected to the lifting element and drivable by the lifting element between an ejector home position and an ejector ejection position. The slide has first and second slide segments that are transverse to one another. The lifting element is movable between a lifting-element home position and a lifting-element ejection position.

Provided is a control system and method for a power-driven nail gun, which includes a battery, a motor, a flywheel rotating along with the motor, an impacting member receiving kinetic energy of the flywheel and a nail channel providing a channel for a nail to move along therewith when hit by the impacting member. The method includes utilizing a microcontroller to provide a pulse width modulation (PWM) signal for a driving circuit to drive the motor based on the PWM signal; and in response to reaching a target rotation speed by the motor, utilizing the microcontroller to output a corresponding PWM duty to the driving circuit based on the voltage of the battery, to make the motor maintain at the target rotation speed. The nails obtain stable and consistent kinetic energy and stability of nail firing is effectively improved.

A drive-in tool for driving fasteners into a workpiece, wherein the tool comprises in particular: a safety device for transferring the drive-in tool from a trip-ready state into a secured state after expiry of a delay, wherein the safety device comprises a control volume and an activation element, wherein in the first position of the activation element a charging connection is defined between the control volume and the gas pressure source connection, and wherein in the second position of the activation element a discharging connection is defined between the control volume and a pressure sink, wherein one connection from the charging connection and the discharging connection comprises a smallest cross-sectional flow area which, together with a gas pressure of the gas pressure source, determines the delay time of the safety device.
The present disclosure also relates to a corresponding method for operating a drive-in tool.

A fastener tool includes a motor, a drive mechanism connected to the motor and adapted to drive a piston, and a cylinder filled with compressed gas. The piston is accommodated in the cylinder and suitable for a reciprocating motion within the cylinder. The drive mechanism includes a blade fixed to the piston, and a gear coupled to the motor. The gear contains a plurality of teeth adapted to engage with a plurality of lugs on the blade such that a rotation of the gear is transformed to a linear movement of the blade. The drive mechanism further includes a disengagement module which within a period of a rotation cycle of the gear, is configured to prevent one of the plurality of teeth from unintentionally engaging with a misaligned one of the lugs.

A clinch fastener mechanism including a pivoting base configured to be pivotally connected to a pneumatic fastener tool. The clinch fastener mechanism further includes a clinch arm pivotally connected to the pivoting base at a proximal end of the clinch arm; and a clinch plate disposed on a distal end of the clinch arm, wherein tool operates within three pressure zones. The system may also include a two-valve system which works by moving pressure throughout three specific zones. The first pressure zone has pressure introduced to it by the user attaching the tool to a pressure delivery source, such as a compressor, or other source. The second pressure zone may be used to operate the clinch arm or a safety mechanism. Mechanical safeties may be configured to prevent accidental or double firing of the tool.