[Problem] To provide a screw cutting mechanism that can stably feed screws to a driver bit by stabilizing the position of the screws, and that has an accurate and smooth cutting action.

[Solution] Provided is a screw cutting mechanism for cutting screws one at a time from a screw feeder, wherein: the cutting mechanism is equipped with a rotating disk that rotates horizontally; the outer circumference of the rotating disk comprises a recessed section that opens toward the axis of rotation and holds the screws therein; the rotating disk fits into a circular cavity in the upper section on the frame side; a rotating shaft attaches the rotating disk to the upper section on the frame side, is equipped with a fixed bearing section in the middle section on the frame side, and is equipped with an adjustable bearing section that can be secured to the lower section on the frame body side so that the attachment position is adjustable; a slit disk, which is equipped with a slit that corresponds to the recessed section, and a drive gear are fixed at suitable locations on the rotating shaft between the adjustable bearing section and the rotating disk; a detection mechanism for detecting the slit of the slit disk is provided; a stepping motor is controlled by a detection signal from the detection mechanism to drive the drive gear; and the rotating disk is rotated by a prescribed angle in one direction.

A magazine is configured to be removably coupled to a power tool housing of a power tool. The magazine has a housing configured to be rotatably attachable to the power tool housing. An advancing mechanism is received in the magazine housing, and is configured to advance a strip of collated fasteners into position to be driven by the power tool. An indexing ring has a plurality of recesses and is configured to be non-rotatably attached to the power tool housing. A detent is biased to removably engage one of the plurality of recesses, and is configured to be non-rotatably attached to the magazine housing. The detent removably engages the recesses to allow for indexed tool-free rotation of the magazine housing relative to the power tool housing.

A fastener driving tool and a positioning foot for the fastener driving tool are provided. The fastener driving tool includes a body having a nosepiece configured to drive a fastener along a drive axis. The positioning foot is secured to the nosepiece and includes a base having a tool-facing surface and a work piece engaging surface opposite to the tool-facing surface. The positioning foot also includes a clip attaching section at a first end of the base, the clip attaching section having a pair of notches configured to receive corresponding portions of a clip to position the clip on the base.

A handheld tool includes a magazine accommodating a plurality of fasteners coupled by a coupling band, a lid portion opening and closing the magazine, a nose portion having an injection passage and an injection port, a supply passage connecting the injection passage and the magazine for feeding the fasteners coupled by the coupling band to the injection passage; and a driver bit separating the fasteners of the injection passage from the coupling band and driving the fasteners toward the injection port. The nose portion has a discharge port for discharging the coupling band from which the fasteners are separated. The injection passage and the discharge port have an opening portion on a lateral side perpendicular to the extending direction of the injection passage, and the lid portion exposes and covers the opening portion.

A fastening tool includes: a bit holding portion which detachably holds a driver bit and is configured to rotate in a circumferential direction of the driver bit and move in an axial direction of the driver bit; a motor configured to perform at least one of rotation of the bit holding portion and movement of the bit holding portion along the axial direction; and a control unit configured to control a position of the bit holding portion along the axial direction by a rotation amount of the motor. The control unit is configured to stop rotation of the motor based on a load applied to the motor rotated in one direction of moving the bit holding portion in a direction approaching a fastening target.

Fastener installation systems, devices and methods for driving fasteners, including fasteners, into a surface are disclosed. The fastener installation systems include an adapter operable to engage a chuck on a power tool on a first end and a fastener delivery attachment on an opposing end.

A stopper for an autofeed screwdriver attachment designed for mounting to a manual-feed screw gun that prevents overshooting when advancing a collated strip of fasteners during operation. The attachment has a nosepiece that protrudes from the front end, and this nosepiece is also used as a guide to drive fasteners into a workpiece. The nosepiece is depressed as the fastener is driven, and automatically extends when released from the workpiece. As the nosepiece extends, it rotates a pair of sprockets, which advances the collated fastener strip. This sequence is referred to as an index on return. The stopper contacts one of the sprockets to prevent it from further rotation, thus preventing any overshooting of the collated fastener strip. When the nosepiece is depressed again, the stopper releases contact with one of the sprockets.

A clip strip installation system comprising an adjustable base with a removably attaching tool body. The tool body has mechanisms for receiving and feeding through the tool body a clip of collated deck installation clips. One clip at a time is disposed within an installation chamber, where a vertical bit is rotated to drive a fastener of the clip into a support structure, such as a joist. The process of removing the bit causes automatic reloading of the chamber with the next clip in the strip without the need for a motor or power source.

There is provided a driving tool driven by air pressure of compressed air. The driving tool includes: a driving cylinder to which compressed air is supplied; a driving piston configured to move in an up-down direction inside the driving cylinder by the supplied compressed air; a driver attached to the driving piston and configured to move in the up-down direction; and a guide portion provided on a lower side of the driving cylinder. The guide portion has a guide hole through which the driver passes and an exhaust hole that allows an inside of the driving cylinder to communicate with an outside of the driving tool. The exhaust hole is provided at a position separated outward from an inner peripheral surface of the guide hole.

Fastener installation systems, devices and methods for driving fasteners, including fasteners, into a surface are disclosed. The fastener installation systems include an adapter operable to engage a chuck on a power tool on a first end and a fastener delivery attachment on an opposing end.