A tool extension rod includes a main piece, a sliding sleeve, and a magnetic assembly. The sliding sleeve is slidably sleeved onto the main piece. When the sliding sleeve moves between a first position and a second position, the magnetic assembly is movable along an axial direction.

A quick coupling unit for bar loader clamps includes an end shaft that can be accommodated rotatably within a corresponding seat of a tubular body that is integral with the bar pusher of said loader and an element for stable coupling to the terminal stem of the respective clamp. The element includes a sleeve provided with a recess whose shape and dimensions are complementary to those of an insert which can be accommodated in said recess. The quick coupling unit also includes a locking ring having a variable inside diameter that surmounts said sleeve, the rotation of the ring to a first configuration defines clamping of the insert within the recess and locking of the stem, and to a second configuration defining radial freedom of the insert and free exit of the stem.

A quick coupling unit for bar loader clamps includes an end shaft that can be accommodated rotatably within a corresponding seat of a tubular body that is integral with the bar pusher of said loader and an element for stable coupling to the terminal stem of the respective clamp. The element includes a sleeve provided with a recess whose shape and dimensions are complementary to those of an insert which can be accommodated in said recess. The quick coupling unit also includes a locking ring having a variable inside diameter that surmounts said sleeve, the rotation of the ring to a first configuration defines clamping of the insert within the recess and locking of the stem, and to a second configuration defining radial freedom of the insert and free exit of the stem.

A tool-holding apparatus (70) includes an engaging member (71) for engaging a tool accessory (B) and being movably supported in axial and radial directions in a rotational-output shaft (26) having an insertion hole (81) for holding the tool accessory (B). A first biasing member (72) biases the engaging member towards engagement with the engaging member. A bit sleeve (73) is movable in the axial direction along an outer-circumferential surface of the rotational-output shaft between a blocking position at which radial outward movement of the engaging member is blocked and a permitting position at which radial outward movement of the engaging member is permitted. A second biasing member (74) biases the bit sleeve toward the blocking position. A positioning part (75) is fixed on the outer-circumferential surface of the rotational-output shaft and stops the bit sleeve at the blocking position. The bit sleeve has a projection (88), which is disposed on the forward side of the first biasing member, extends inward in the radial direction, and slidably contacts the rotational-output shaft.

A portable device is disclosed for drilling a hole through a plate and into a wooden tie and/or inserting a lag screw into the hole in the plate and into the wooden tie. The portable device may include a handle and a removable drill with a rechargeable battery that provides power to the portable device. In various embodiments, the portable device may include a quick connect/disconnect component configured to enable the portable device to be used as a tie drill device or a lag screw inserter device by interchangeably connecting either a drill bit or a lag screw socket to the portable device. In various embodiments, the portable device may include quick-release system, a bit-aligning tip, and/or a bit aligning guide to facilitate switching between different tools compatible with the portable device.

A retention knob tool. A tubular body, is held in the tubular sleeve, and symmetrically formed around an axis. The tubular body also has an internal bore. Four locking ball retainer sockets are formed in the tubular body. A retention knob aperture is recessed within a top plate. Four balls are movably held in the ball retainer sockets. A tubular end stop is affixed to the tubular body rearward end. A drive tool cavity is recessed within the tubular body rearward end. The sleeve forward end includes a recessed circumferential portion bounded by a first thicker portion of the inside wall, where the first thicker portion bears against the balls when the tubular body is translated rearwardly into an inward lock position and the inward force is removed from the plurality of balls when the tubular body is extended forwardly into a release position.

A lower drill tool that is structurally configured to receive a bracket, and, to cooperate with an upper drill tool having a pair of spaced apart drill bits. The lower drill tool has part receiving surface, a pair of spaced apart drill bores, a central bore, a centering nub and a biasing member. The drill bores extend downwardly away from the part receiving surface. The central bore is between the drill bores and extends downwardly away from the part receiving surface. The centering nub is slidable within the central bore, and has an upper tip extendable beyond the part receiving surface, positionable between an extended position and a partially retracted position. The upper tip has a conical configuration. The biasing member is positioned within the central bore and biases the centering nub toward the extended position. A drill system and a method are also disclosed.

A tool retainer is provided. The tool has a retainer sleeve having a longitudinal external tab to engage with an internal recessed radial groove with a tool holder, and wherein the retainer sleeve has two internal radial tabs that engage with a recessed groove in a rotating tool shank. A cutting tool assembly including a cutting bit and the retainer sleeve is provided.

Disclosed is a system to engage a plurality of tools. In the system a drive shaft and collet may be assembled to engage and disengage, selectively, a plurality of tools. User selection may allow use of a plurality of tools during a procedure or during a plurality of procedures.

A sheet metal tooling assembly for drilling, snipping, notching, and crimping sheet metal includes a housing, which defines an interior space. A motor and a drive linkage are engaged to the housing and are positioned in the interior space. The drive linkage is operationally engaged to the motor. A battery is selectively engageable to the first section so that the battery is operationally engaged to the motor. A fixed chuck is engaged to the housing and is operationally engaged to the drive linkage. A tool for tooling sheet metal is selectively engageable to the fixed chuck. The motor is positioned to actuate the tool via the drive linkage and the shaft so that the tool can effect tooling of the sheet metal.