A handle replacement system for manipulating earth includes a handle that may be manipulated. The handle comprises dimensional lumber. A head is removably coupled to the handle. Thus, the head may manipulate earth. The head is structured to receive dimensional lumber.

A handle replacement system for manipulating earth includes a handle that may be manipulated. The handle comprises dimensional lumber. A head is removably coupled to the handle. Thus, the head may manipulate earth. The head is structured to receive dimensional lumber.

A power tool includes a motor, a hammer mechanism, and a housing. The motor has a motor shaft that rotates around a motor axis. The hammer mechanism includes a cylinder and a hammer element adjacent to an air chamber defined within the cylinder and is configured to convert rotary motion of the motor shaft to linear motion of the hammer element along a prescribed hammer axis by utilizing action of an air spring of the air chamber. The housing houses the motor and the hammer mechanism. The motor axis is arranged to be parallel to the hammer axis and to pass through the inside of the cylinder.

A power tool includes a motor, a hammer mechanism, and a housing. The motor has a motor shaft that rotates around a motor axis. The hammer mechanism includes a cylinder and a hammer element adjacent to an air chamber defined within the cylinder and is configured to convert rotary motion of the motor shaft to linear motion of the hammer element along a prescribed hammer axis by utilizing action of an air spring of the air chamber. The housing houses the motor and the hammer mechanism. The motor axis is arranged to be parallel to the hammer axis and to pass through the inside of the cylinder.

A shovel includes a shovel blade, a handle assembly with a tubular section and hammer section, where the hammer section is configured to axially slide within the tubular section to function as an impact hammer. A locking assembly locks the hammer section in one of an extended position and a compressed position relative to the tubular section. Releasing the locking assembly allows the hammer section to axially slide within the tubular section.

A light guide plate includes a main body, first stripe structures and second stripe structures. The main body has an optical surface, a light-incident surface and an opposite light-incident surface. The main body has a hole passing through the optical surface, and the optical surface has a first region and a second region which are separated by an imaginary line. The imaginary line intersects the hole. The hole has a first side near the opposite light-incident surface and a second side near the light-incident surface. A portion of each of the first stripe structures is disposed in the first region. The second stripe structures are disposed in the second region. An extending direction of at least one portion of each first stripe structure is vertical to the light-incident surface, and a portion of the second stripe structures extends to the first side of the hole near the opposite light-incident surface.

A support aid for digging and prying when using a shovel is disclosed. The support aid allows a shovel user to support the weight of a load by use of a support shaft. A user pivots a load from one position to another more ergonomic position using the support shaft. An end of the support shaft has a channel freely slidable along a handle of a shovel, for allowing a fulcrum, which is defined by a point of contact between the handle and the channel, to be quickly moved along the handle. The channel is configured for allowing the shovel shaft to freely rotate about an axis, enabling a user to quickly change a shovel blade angle relative to the ground or relative to a load at any time. In this way, ergonomic application of the inherent mechanical advantage of a handle of a shovel is provided to users of the support.

While the described shovel can include any suitable component, in some cases, it includes a blade, a shaft, a handle, a handgrip, and/or a coupling component. In some cases, the handgrip is located at a center of weight of the shovel, with substantially half of the shovel's weight distributed on each side of the handgrip. In some cases, the shaft is oriented at an angle relative to the blade and the handle is oriented at an angle relative to the shaft. In some cases, the coupling component is located along the shaft and is configured to selectively and removably connect at least a first modular section of the shaft to a second modular section of the shaft. In some cases, the coupling component is configured to only fully engage when the first and second modular sections are in a single orientation with respect to each other. Other implementations are described.

The present disclosure provides a handle attachment for attaching to a main shaft of a weed trimmer. The handle attachment comprises a clamping mechanism, a shaft coupled to the clamping mechanism, and a grip coupled to the shaft. The clamping mechanism is configured to be coupled to the main shaft of the weed trimmer closer to a distal end of the main shaft than to the proximal end of the main shaft. The shaft is configured to extend towards the proximal end of the main shaft and at least partially above the main shaft. The grip is configured to be positioned closer to the proximal end of the main shaft than to the distal end of the main shaft. The grip is further positioned above a standard weed trimmer and perpendicular the main shaft. Positioning the grip above the standard grip reduces back and hip strain on the user.

Provided is a foot shovel comprising a pedal-activated lift and release mechanism. The foot shovel may allow for the relocation of a load, such as snow, dirt, rocks, sand, concrete, and the like, while minimizing exertion of the back, shoulders, and upper body. The foot shovel instead may redirect that exertion to an area of the body that may be less prone to complications and strain due to sudden movement, such as the feet, legs, and lower body. The pedal-activated lift and release mechanism may comprise a series of levers, arms, and axles that transition the foot shovel from a resting state where the foot shovel may acquire a load, to a lifting state that allows movement of the load to a desired location, and, finally, to a release state wherein the load is released from the foot shovel. The pedal-activated lift and release mechanism may transition back to a resting state to repeat the process of relocation. The pedal-activated lift and release mechanism may be actuated by a stepping motion by a user's foot.