An impact tool comprises: a casing; a rotating hammer arranged in the casing and rotatable by a motor; a rotating interface element arranged in the casing and rotatable by the hammer by a series of impacts; an output shaft rotating around a rotation axis, the output shaft having a proximal end fixed to the interface element and a distal end protruding from the casing, the distal end ending with a connecting element for removable connection to an outer mechanical adaptor; a unit of measurement arranged for obtaining torque of the output shaft by a torque sensor mounted to the output shaft, the unit of measurement comprising a fixed measuring assembly mounted integrally to the casing and a rotating measuring assembly mounted so as to rotate integrally with the rotating output shaft; the fixed measuring assembly being configured to generate a supply signal and transmit the supply signal to the rotating measuring assembly to supply electrically the rotating measuring assembly; the rotating measuring assembly being configured to detect a measuring signal indicating the torque and condition the measuring signal in order to be able to send the measuring signal to the fixed measuring assembly; in which the fixed measuring assembly and the rotating measuring assembly comprise electronic devices that execute a two-directional communication in contactless mode by magnetic coupling between the fixed measuring assembly and the rotating measuring assembly, the communication being configured to supply magnetically the torque sensor and permit transmission of the measuring signal conditioned by the rotating measuring assembly to the fixed measuring assembly.

A hand-held power tool has a tool socket 2, a drive 5, 6 for driving the tool socket 2, and a housing 19 in which the drive 5, 6 is accommodated. A stationary part 14 of the drive 5 is connected by means of at least one detachable clamped connection 21 to at least one element 19, whereby the element 19 is the housing 19 or another stationary part of the drive 5, 6. The clamped connection 21 has a cylindrical pocket 22 in the one stationary part 14, a bushing 27 that is made of plastic and that is inserted into the cylindrical pocket 22, and it has a screw 30 that is screwed into the bushing 27.

An example hammer disclosed herein includes a handle. The hammer also includes a head comprising a neck. The neck has a tapered receiving surface and an end face. The hammer further includes a cap comprising a tapered mounting surface. The mounting surface is surrounding and engaging the receiving surface to permanently affix the cap to the neck. A first circumference of engagement at a first end of a length of engagement between the mounting surface and the receiving surface is greater than a second circumference of engagement at a second end of the length of engagement. The first end is farther from the end face of the neck than the second end.

An impact tool includes a mechanism part, a main-body housing and a grip housing. The mechanism part strikes a tool bit. The main-body housing holds the mechanism part therein. The grip housing is continuously provided to a rear portion of the main-body housing. One end portion of the grip housing is displaceably connected to the main-body housing through an elastic member, and the other end portion of the grip housing is rotatably connected to the main-body housing through a rotary joint. A center of the rotary joint is disposed on a leading end side of the impact tool with respect to a center of the elastic member, when viewed in a strike direction of the impact tool.

A hammer drive mechanism for a hammer strike mechanism of a hammer drill is provided including: a drive shaft capable of being rotationally driven by a motor, a rod capable of reciprocatingly driving a piston, and a conversion mechanism that converts the rotary movement of the drive shaft into a reciprocating movement of the rod. The drive shaft comprises a first part connected to the conversion mechanism and a second part capable of being rotationally driven by a motor. The second part connects to the first part via at least one dampener such that rotary movement of the second part is transferred to the first part via the at least one dampener.

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.

An impact block, a carrier member mating the impact block and an impact tool using the impart block and the mating carrier member are disclosed. The impact block includes an annular body including an outer race, an inner race, a positioning portion provided with the outer race for bump fit and extending in the axial direction of the annular body and one or multiple impact portion provided with the inner race. By using the impact tool composed of the above impact block and the matching carrier member, the vibration generated by the striking process can be reduced, the striking efficiency is improved, the service life is increased, the component composition is simplified, the assembly procedure is quick and simple.

A demolition device support has an elongated body that includes a base frame, a base frame support member, and an upper support member. The base frame is fixedly attached to the base frame support member, which is pivotably connected to the upper support member by a hinge. A handle extension member is mounted at the upper end of the body, and includes a mount for receiving handlebar. A collar is mounted at the lower end of the body, and is configured to receive a portion of the housing of a demolition device. The demolition device support is used to support a demolition device in an ergonomic and efficient position during use of the demolition device.

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.