A screed having a rectangular tube with a pair of cross braces. A rod extends the length of each cross brace and has threaded bores at the end thereof. The cross braces have legs that extend outward to the sides of the tube from the rod. An end plate is mounted on each end of the screen and is attached thereto by screws received in the threaded bores and passing through openings in the end plates.

A screed having a rectangular tube with a pair of cross braces. A rod extends the length of each cross brace and has threaded bores at the end thereof. The cross braces have legs that extend outward to the sides of the tube from the rod. An end plate is mounted on each end of the screen and is attached thereto by screws received in the threaded bores and passing through openings in the end plates.

The invention provides a float trowel blade attachment for cement floor finishers comprising a rectangular section of sheet metal having a top surface and a bottom surface and having its edges optionally bent upwardly, means for providing to the top surface a three-sided rearwardly open pocket on the back of the section adjacent the leading edge thereof adapted to partially receive a finish trowel blade of the finisher, a spring clip secured to the top surface or the pocket-forming means and extending rearwardly therefrom so as to be engageable with the finish trowel blade to retain the section thereon, and wherein said rectangular sheet metal has attached to its bottom surface using an adhesive or mechanical attachment material interlayer, a composite rigid abrasive element bonded to a resilient backing.

Provided is a concrete edger hand-tool, including: a referencing structure comprising: a first member having a first surface oriented to face downward and bias a top-surface of a concrete form; and a second member having a second surface oriented to face substantially orthogonal to the first surface and bias a substantially vertical-side of the concrete form, wherein the referencing structure is configured to translate along a corner of the concrete form responsive to a force applied by a user edging unset concrete; and a concrete-surfacing structure coupled to the referencing structure, the concrete-surfacing structure comprising: a third member extending substantially orthogonal to the second member in a different direction from the first member, wherein the third member has a third surface configured to slide over and displace unset concrete to a depth defined by the top-surface of the concrete form.

Provided is a concrete edger hand-tool, including: a referencing structure comprising: a first member having a first surface oriented to face downward and bias a top-surface of a concrete form; and a second member having a second surface oriented to face substantially orthogonal to the first surface and bias a substantially vertical-side of the concrete form, wherein the referencing structure is configured to translate along a corner of the concrete form responsive to a force applied by a user edging unset concrete; and a concrete-surfacing structure coupled to the referencing structure, the concrete-surfacing structure comprising: a third member extending substantially orthogonal to the second member in a different direction from the first member, wherein the third member has a third surface configured to slide over and displace unset concrete to a depth defined by the top-surface of the concrete form.

A hand tool includes an elongated handle suitably sized and shaped for handling HMA, and an implement attached to a distal end of the elongated handle. Such an implement includes: a non-stick, asphalt-resistant top layer, and a metal core directly attached to the non-stick, asphalt-resistant top layer, and a non-stick, asphalt-resistant bottom layer directly attached to the metal core. Notably, the metal core is intercalated between the non-stick, asphalt-resistant top layer and the non-stick, asphalt-resistant bottom layer. Advantageously, each of the non-stick, asphalt-resistant top layer and the non-stick, asphalt-resistant bottom layer prohibits hot mix asphalt from adhering onto the implement.

A hand tool includes an elongated handle suitably sized and shaped for handling HMA, and an implement attached to a distal end of the elongated handle. Such an implement includes: a non-stick, asphalt-resistant top layer, and a metal core directly attached to the non-stick, asphalt-resistant top layer, and a non-stick, asphalt-resistant bottom layer directly attached to the metal core. Notably, the metal core is intercalated between the non-stick, asphalt-resistant top layer and the non-stick, asphalt-resistant bottom layer. Advantageously, each of the non-stick, asphalt-resistant top layer and the non-stick, asphalt-resistant bottom layer prohibits hot mix asphalt from adhering onto the implement.

A concrete float, float assembly, float adapter and interface, and float vibration apparatus and methods are described. A concrete float has improved surfaces, and structures for controlling flow of wet concrete. An interface such as may be included in a quick attach/release configuration may be integrated on a float, and/or may be added onto a float for quick attach/release of a pivot assembly. Adapters may ease attachment or release of an assembly, and may be an interengaging element, such as a sliding dovetail as an interengaging element, or an adapter may be used to place an assembly in tension to secure the assembly. A vibration assembly may be included and configured to have a low center of mass, can have a user display, an accelerometer, and/or other components. A pivot assembly may be included for easier use by an operator, and may include a user display, quick release mechanisms.

A concrete float, float assembly, float adapter and interface, and float vibration apparatus and methods are described. A concrete float has improved surfaces, and structures for controlling flow of wet concrete. An interface such as may be included in a quick attach/release configuration may be integrated on a float, and/or may be added onto a float for quick attach/release of a pivot assembly. Adapters may ease attachment or release of an assembly, and may be an interengaging element, such as a sliding dovetail as an interengaging element, or an adapter may be used to place an assembly in tension to secure the assembly. A vibration assembly may be included and configured to have a low center of mass, can have a user display, an accelerometer, and/or other components. A pivot assembly may be included for easier use by an operator, and may include a user display, quick release mechanisms.

A hand concrete float is formed with a plastic base member affixed by fasteners to an arched handle. The base member includes a support portion and a working portion. The support portion has the arched handle connected to the upper surface thereof, while the working portion is integrally formed with the support portion on the bottom surface thereof. The working portion is formed with a chamfer extending around the perimeter of the working portion to make the working portion smaller that the support portion. The working portion is also formed with grooves that crisscross to form diamond-shaped landings. The grooves have a width sufficient to allow concrete to accumulate within the grooves to season the hand concrete float before operative use. The concrete filled grooves provide a rough effective working surface that has a long operative life with the weight thereof commensurate with conventional hand concrete floats.