Patent ID: 8297878

Claim:
In combination: structure operable to be used during formation of longitudinally curved curbing, wherein the structure has a shape corresponding to a curved shape of the curbing; and a power tool that permits a single operator to form wet concrete into the curved curbing, wherein the tool includes— a concrete forming device consisting essentially of a single rotatable curb-forming roller having an axis of rotation, said roller including a generally cylindrical body, a reduced diameter neck at one end of the body, and a shaping surface extending between the body and the neck, said body and said neck being coaxial about the axis of rotation, a handle assembly operably coupled with said concrete forming device along the axis of rotation to allow the roller to rotate transverse to a longitudinal axis of the curbing while the roller is being pulled and maneuvered by the operator in a direction of advancement, a motor operably coupled with said concrete forming device for driving the roller in a direction of rotation, such that the lower periphery of the roller moves generally toward the direction of advancement, such that the rotating roller resists the pulling force from the operator and shapes and smooths the wet concrete into curbing, and an alignment device engaging and following the structure while the roller is being pulled and maneuvered by the operator, said alignment device comprising a ring extending radially outwardly from the neck of the roller, wherein the structure comprises a pair of laterally spaced, curved form members containing the concrete, one of the form members being shorter than the other, said ring being configured for disposition laterally adjacent one of the pair of form members.