A storage device includes at least one cartridge defining a cavity for receiving at least one storage item. A receiver defines at least one cell for receiving the at least one cartridge, and a passageway extends longitudinally along the center of the receiver to an opening defined in an external surface of the receiver. Springs are employed for biasing the at least one cartridge in a first position in the at least one cell wherein the cavity is not aligned with the passageway, or in a second position in the at least one cell wherein the cavity is aligned with the passageway. In one application, the storage device is adapted for storing bits in a multi-bit screwdriver.

A hand-held machine tool having a tool receiver to receive an insert tool having an external profile, the tool receiver featuring an internal receiver provided at least sectionally with an internal profile, and having a tool housing assigned a tool-change magazine having at least one tool chamber for storing the insert tool, the tool chamber being alignable with the tool receiver to allow the insert tool to be transferred from the tool chamber into the internal receiver or from the internal receiver into the tool chamber, a positioning device being provided for the circumferential alignment of the external profile when transferring the insert tool from the tool chamber into the internal receiver of the tool receiver to produce a form-locking connection between the internal profile and the external profile that at least for the most part, is free of rotational play, the positioning device has at least one magnet.

The present disclosure provides a portable power tool. The power tool includes a tool body, a tool assembly and a gas pressure detection assembly. The tool assembly includes a tool bit furnished detachably in an end of the tool body. The gas pressure detection assembly is furnished detachably in another end of the tool body. The gas pressure detection assembly is communicatively coupled to the tool body.

A screwdriving including a housing with a handle section and a motor housing section. A longitudinal axis of the handle section is at an offset angle with respect to a longitudinal axis of the motor housing section. A motor is housed in the motor housing section. An output tool holder is selectively driven by the motor. A user actuatable trigger activates the motor. The screwdriver further includes a bit holder rotatably held on the housing, the bit holder including a first section which includes a plurality of bit retainers; and a second section including a plurality of detents. The screwdriver further includes a pin which engages with the plurality of detents to hold the bit holder in one of a plurality of rotational positions.

An installation tool fastener is particularly adapted for fastening a top plate to a roof support member and other structural connections and is particularly adapted for use with an installation tool. The installation tool fastener has a head with a maximum head diameter and a recess for coupling with a drive coupler. The shank of the head has an unthreaded portion and a uniform thread which has a major diameter approximately equal to the maximum diameter of the head. The head preferably has a slight taper. The thread preferably has a 7.5 thread per inch pitch and a thread angle from approximately 25 to 45. In one embodiment for a 6 inch fastener, the thread length is approximately 5 inches and extends along the tapered distal tip.

A power tool, comprising: a housing; a motor being disposed in the housing for outputting rotary power; an output shaft having an accommodating hole in the axial direction for holding a tool bit; a transmission mechanism, being disposed between the motor and the output shaft for transmitting rotary power from the motor to the output shaft; a tool bit supporting being disposed in the housing and including several chambers disposed in parallel for holding the tool bit; a connecting member being disposed in the housing and capable of moving axially between a working position where the connecting member passes through one of the chambers and to accommodate the tool bit in the chamber connect the output shaft, and a release position where the connecting member exits and separates from one of the several chambers; and an operating member is arranged on the housing for controlling the axial movement of the connecting member; the power tool further includes an automatic shifting means for adjusting the position of the tool bit supporting in response to the movement of the operating member, wherein the connecting member moves axially to a position that is separated from one of the several chambers, and the cartridge moves to a position where another chamber is axially corresponding to the output shaft under the action of the automatic shifting means.

A receiving device for removable attachment of a screw bit holder includes a disc-shaped platform, made of magnetic material or provided with at least one magnetic element, and a centrally extending projection. The screw bit holder includes a base portion with apertures for carrying screw bits. The screw bit holder has at least one magnetic element adjacent the bottom of the apertures. The back side of the screw bit holder includes with a cavity that has a removable attachment of the centrally extending projection. The magnetic elements are positioned adjacent each other such that the screw bit holder and the receiving device are removably attached to each other by the magnetic force.

Scrench tools for chainsaws are provided. A scrench tool includes a first shaft extending from a first end to a second end, wherein the first end comprises a recessed slot having an opening at the first end; and a second shaft extending away from the first shaft to a screwdriver head.

A tool bit holding system for a power tool includes a bottom support bracket configured to be removably coupled to a base of a handle of the power tool. An elongated arm includes a bottom end portion configured to be coupled to the support bracket and a front bit holder portion configured to removably receive and retain a plurality of tool bits. A top support bracket is configured to be coupled to a top end portion of the arm and to be supported adjacent the front end portion of the housing so that the elongated arm is disposed in front of the handle.

An installation tool and fastener is particularly adapted for fastening a top plate to a roof support member and other structural connections. The installation tool comprises a telescopic tool assembly which transfers torque from a power driver tool to a fastener drive coupler. The installation tool has a receiver guide which is configured to concentrically guide a fastener into driver engagement with a fastener coupler. The coupler may have a driver tip with radial projections, a Philips driver tip or a square driver tip. In one embodiment, the installation tool fastener has a head with a maximum head diameter equal to the major thread diameter and a recess for coupling with the drive coupler.