An impact tool is provided, including a working portion and a handle. The working portion includes a housing which is made of rubber and a filler. The housing defines an inner space, and the filler is stuffed with the inner space. The filler is shear thickening non-Newtonian fluid. The handle is connected with the working potion.

An impact tool is provided, including a working portion and a handle. The working portion includes a housing which is made of rubber and a filler. The housing defines an inner space, and the filler is stuffed with the inner space. The filler is shear thickening non-Newtonian fluid. The handle is connected with the working potion.

A mallet is described that has at least one cleft, in such a structure that the stress wave created during impact has longer travel way than the length of the mallet as measured along the impact line. This mallet induces longer-lasting and weaker stress wave(s) in the anvil as compared to a solid mallet having the same outer dimensions and more or less the same weight. The Cleft-Mallet increases the effectiveness of the strike, while decreasing the stresses in the anvil.

A tool, such as a hammer, including cladding on a striking surface is shown and described. The cladding interfaces against the object struck by the hammer, thus protecting the hammerhead body from wear. In one embodiment, the cladding comprises multiple separate cladding projections that are affixed to the striking surface.

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 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.

A force-limiting and damping device has a body, a tapping element, and an elastic element. The body has a connecting segment and a holding segment. The connecting segment is formed on an end of the body and has a mounting hole. The holding segment is formed on the body opposite the connecting segment. The tapping element is connected to the body to move relative to the connecting segment. The elastic element is mounted between the tapping element and the connecting segment to abut against the tapping element and to enable the tapping element to move relative to the connecting segment. The structural relationship between the connecting segment, the tapping element, and the elastic element may provide a delayed rebound and damping effect to the reaction force, and the applied force is continuously transferred to a tapping object. This may reduce noise and the loss of energy.

A force-limiting and damping device has a body, a tapping element, and an elastic element. The body has a connecting segment and a holding segment. The connecting segment is formed on an end of the body and has a mounting hole. The holding segment is formed on the body opposite the connecting segment. The tapping element is connected to the body to move relative to the connecting segment. The elastic element is mounted between the tapping element and the connecting segment to abut against the tapping element and to enable the tapping element to move relative to the connecting segment. The structural relationship between the connecting segment, the tapping element, and the elastic element may provide a delayed rebound and damping effect to the reaction force, and the applied force is continuously transferred to a tapping object. This may reduce noise and the loss of energy.

A dead blow hammer head with end caps coupled to a central body through an interference fit. The ends of the body can be flared axially and radially outward and interference fit with the recesses to maximize the surface area overlap between the ends of the body and the recesses. By maximizing the surface area overlap, stress concentrations and failure are reduced. The hammer head can also include a shot or other mass that is unobstructed by screws or pins due to the interference fit of the hammer head components. The interference fit can become stronger during use with each impact further solidifying the surface area overlap between the ends and central portion of the hammer head.

A dead blow hammer head with end caps coupled to a central body through an interference fit. The ends of the body can be flared axially and radially outward and interference fit with the recesses to maximize the surface area overlap between the ends of the body and the recesses. By maximizing the surface area overlap, stress concentrations and failure are reduced. The hammer head can also include a shot or other mass that is unobstructed by screws or pins due to the interference fit of the hammer head components. The interference fit can become stronger during use with each impact further solidifying the surface area overlap between the ends and central portion of the hammer head.