Pneumatic fastener driver

A pneumatic fastener driver is operable in a single sequence mode and an impact firing mode. The pneumatic fastener driver includes a housing, a beam frame extending from the housing and from which the fastener is ejected, and a trigger movable between a default position in which activation of the drive cycle is inhibited and a depressed position in which activation of the drive cycle is permitted. The pneumatic fastener driver also includes a contact arm movable relative to the beam frame between an extended position and a retracted position, and a timeout mechanism. The timeout mechanism isoperable in a crash launch mode to inhibit activation of the drive cycle or actuation of the contact arm toward the retracted position in response to inactivity of the contact arm within a preset timeinterval starting from once the trigger is actuated from the default position to the depressed position. 一种气动紧固件驱动器，其可在单顺序模式和碰撞发射模式下操作。气动紧固件驱动器包括壳体，从壳体延伸以及紧固件从其弹出的梁架，以及可在默认位置和按下位置之间移动的触发器，其中在默认位置，驱动循环被禁止启动，并且在按下位置，驱动循环被允许启动。气