A passive locking chuck for a rotary driver. The chuck has a pair of rings, one fixed and the other rotatable between a first orientation where recesses formed in the rotatable ring are aligned with recesses formed in the fixed ring, and a second orientation where the recesses are offset from one another. When an upper end of a foundation component having a toothed coupler is inserted into the chuck and rotated axially, the movable ring is moved to the second orientation and the foundation component is thereby captured in the chuck. As soon as resistance is encountered from the soil, the ring moves back to the first orientation so that upon reaching the desired embedment depth, the rotary driver may be withdrawn without counter rotation.

An impact tool head assembling mechanism is provided, including: an engaging sleeve, being disposed on a front end of an impact tool, including a tubular wall and at least one projection, the tubular wall defining an axial direction, the at least one projection being protrudingly and retractably disposed on an inner wall of the tubular wall; an impact tool head, including a rod body and a flange radially protruding from the rod body, the flange including an inclined surface facing toward the front end and an outermost peripheral edge, a contact position being defined as a position where the inclined surface contact with the at least one projection; wherein as viewed along the axial direction, a distance between the contact position and the outermost peripheral edge is larger than or equal to 0.5 mm.

A drilling tool configured to operate in two drilling modes, respectively with and without hammer action, said tool comprising a front end equipped with a rotating part for mounting a drill bit by way of an SDS-type push-fitting, characterized in that said rotating part comprises mechanism for the removable attachment to a first longitudinal end of a tubular extension, this tubular extension being configured to extend along and around a drill bit mounted in the rotating part and comprising a second longitudinal end configured to bear at least one screw-driving element, such that the tool can be used for a screw-driving operation even when it is equipped with the drill bit.

An extension adapter includes a body having a bore. The bore is configured to receive a tool bit. The extension adapter includes a retaining member received within an aperture of the body and a biasing member coupled to the body. The biasing member includes a protrusion received within the aperture to bias the retaining member into a first position in which a portion of the retaining member extends into the bore. The extension adapter includes a collar moveable between an unlocked position and a locked position. The unlocked position is configured to allow the tool bit to be removed from the bore. While the collar is maintained in the locked position, the body is configured to slidably receive the tool bit such that the portion of the retaining member is received in a groove of the tool bit to secure the tool bit to the body.

A rotary hammer drill adapter. The rotary hammer drill adapter includes an elongated body having a shank end and a bit end. The bit end is disposed on an opposing end of the elongated body relative to the shank end. The shank end has a plurality of grooves disposed on opposing sides of the elongated body and a plurality of sliding keyways disposed on opposing sides of the elongated body. Each of the plurality of sliding keyways is disposed between a pair of the plurality of grooves. The bit end further includes an interface which is adapted to receive complementary bits.

The present disclosure generally relates to quick change attachments for a pneumatic percussive tool. The attachments convert a pneumatic percussive tool, such as an air impact tool with proximal attachment, which has a pushing force, into a pneumatic percussive tool having a pulling force. Once attached to the pneumatic percussive tool, the attachments also provide a quick change feature for allowing pulling tools to be simply and easily removed and replaced.

An impact tool head is provided, configured to be disposed on an impact tool, the impact tool head including: a rod body and a flange radially protruding from the rod body, the rod body including a working end portion, the flange including an inclined surface facing toward the working end portion and an outermost peripheral edge, a contact position being defined as a position where the inclined surface configured to be contact with at least one projection of the impact tool; wherein as viewed along the axial direction, a distance between the contact position and the outermost peripheral edge is larger than or equal to 0.5 mm.

A hand-held power tool includes a tool receptacle with which a tubular tool holder configured to receive an application tool is associated, and a locking device configured to lock the application tool in the tubular tool holder. The locking device locks the application tool in a locking position via at least one locking element in the tubular tool holder. The locking device has a locking sleeve and a pressure ring spring loaded via an associated spring element. The spring-loaded pressure ring is configured to force the locking sleeve into the locking position and, in the locking position, forces the at least one locking element against the tool holder.

The present disclosure generally relates to quick change attachments for a pneumatic percussive tool. The attachments convert a pneumatic percussive tool, such as an air impact tool with proximal attachment means, which has a pushing force, into a pneumatic percussive tool having a pulling force. Once attached to the pneumatic percussive tool, the attachments also provide a quick change feature for allowing pulling tools to be simply and easily removed and replaced.

The present disclosure is directed to a power tool adapted to impart axial impacts to a tool bit. The power tool includes a housing, an electric motor, and a barrel. The power tool also includes a reciprocation drive assembly coupled to the electric motor and configured to convert torque from the electric motor to reciprocating motion of a piston that is received within the barrel for reciprocation therein. The power tool further includes a striker received within the barrel for reciprocation in response to reciprocation of the piston, and an anvil received within the barrel between the striker and the tool bit. The anvil is configured to communicate axial impacts to the tool bit in response to reciprocation of the striker. The anvil defines an opening and an inner bore that communicates with the opening, and the inner bore at least partially receives a shank of the tool bit.