The present invention discloses an instrument of medical/dental insertion, the instrument comprising: an axle; a fixing region; and an insertion element; where the fixing region makes the connection of the insertion element and the axle; the axis rotating the insertion element when connected; where the fastening region comprises a magnet configured to fix the insertion element on the axle.

Thus, one of the advantages of the present invention is to eliminate the natural wear that occurs in the retention, mechanical type, between the tools, besides facilitating the handling of instruments.

A rotary impact tool includes a housing, an electric motor, and a drive assembly for converting a continuous torque input from the motor to consecutive rotational impacts upon a workpiece of at least 900 ft-lbs of fastening torque. An anvil has a bore defining a hexagonal cross-sectional shape and having a nominal width of 7/16 inches. A hammer is rotationally and axially movable relative to the anvil for imparting the consecutive rotational impacts upon the anvil. A spring biases the hammer in an axial direction toward the anvil. A battery pack has a nominal voltage of at least 18 Volts and a nominal capacity of at least 5 Ah. The rotary impact tool has an overall weight including the battery pack that is less than or equal to 7.5 pounds. A ratio of the fastening torque to the overall weight is greater than or equal to 120 ft-lbs per pound.

A driving tool is providing, including: a driving end including three ribs which are angularly arranged in intervals, each of the three ribs being formed as a part of a rectangle and including two right angles, every adjacent two of the three ribs defining a groove therebetween.

A reaction arm mounting assembly comprises a first part and a second part, the first part being configured for attachment to a power tool and the second part is mounted on the first part. The mounting of the second part on the first part: permits sliding motion between the first and second part along an axis common to the first and second parts in a first sliding region and prevents rotation between the first and second member in the first sliding region; and permits rotation between the first and second members in a second sliding region.

The present invention is directed at a thermally sensitive retention mechanism for orthopedic cutting instruments. More specifically, the present invention incorporates structural engagement features into a rotational orthopedic cutting instrument that transfers torque from a driver to a cutting component and which upon heating result in disengagement of the cutting component from the driver portion.

The present invention is directed at a thermally sensitive retention mechanism for orthopedic cutting instruments. More specifically, the present invention incorporates structural engagement features into a rotational orthopedic cutting instrument that transfers torque from a driver to a cutting component and which upon heating result in disengagement of the cutting component from the driver portion.

A fastener driving tool is provided for driving a fastener onto a threaded rod. The fastener driving tool includes a housing, and an input shaft rotatably supported by the housing. The input shaft defines a first rotational axis. An output member is rotatably supported by the housing. The output member is configured to rotatably support the fastener. The output member is configured to receive the fastener and a portion of the threaded rod. A transmission assembly is operatively coupled between the input shaft and the output member. The transmission assembly is configured to convert an input torque from the input shaft about the first rotational axis to an output torque about a second rotational axis acting on the output member. The second rotational axis is disposed at an angle relative to the first rotational axis.

An engagement part of a tool such as a hydraulic wrench (10), the engagement part (1) such as a ratchet link being arranged to engage a workpiece and a power head (11), the engagement part (1) being arranged to convert movement generated by the power head (11) into movement of the workpiece, the engagement part (1) comprising a mounting for the power head (4, 14), the mounting (4, 14) comprising a moveable portion moveable (4) from a first position where the power head (11) is fixed relative to the engagement part (1) and a second position where the power head (11) can move relative to the engagement part (1), the moveable portion (4) comprising a pin having a length and slidable along its length in a bore (17) in the engagement part (1) and a friction lock (2, 3) comprising a compressible member (3) and a compressing member (2) arranged to compress the compressible member (3), the compressible member (3) being arranged such that it expands in at least one extent on compression by the compressing member (2) such that in a locked position of the friction lock the compressible member (3) extends so as contact the pin (4) so as to restrict movement of the pin (4).

A tool with a drive lug having groove formed on the drive lug to promote failure of the drive lug before internal component failure. The groove has a predetermined diameter and is formed on the drive lug or ratchet square to cause failure of the drive lug, due to a torsional ductile fracture, before any internal component failure of the tool, such as, for example, gear and/or pawl failure in a ratchet wrench.