The period of time to manually wrap the rebar tie wire is reduced and worker fatigue is minimized.
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No federally sponsored research/development funds were used to develop this invention.
The present method of winding Rebar Wire around steel rebar rods prior to pouring concrete into concrete forms is time consuming and places stress on the hands, wrist, and forearms of the installer. The present method requires the installer to twist Rebar Wire around the steel rebar to secure the rebar rods so that when concrete is poured, the rebar rods will remain in place to support the concrete in a stable manner. This method requires the installer to set the tension in the rebar by installing a rebar metal tie wire around the two rebars; the ends of the rebar wire is then twisted 180 degrees by hand to secure the wire to the Steel Rebars. This method of wrapping the wire requires the installer to place pliers on each wire, and then twist both wires 180 degrees, release the wire, reattach the pliers to each wire and then twist the wires another 180 degrees. This procedure of wrapping the rebar wire is repeated a number of times until the installer believes the rebar wrap is stable enough for the concrete pour.
The “Rebar Tie Wrench” minimizes the stress to the hands, wrist and forearms of the installer. The installer will make the first rebar wire wrap with pliers to establish the correct tension on the rebar wire. They will then insert one rebar wire into one of the through holes (B) present at the narrow end of the head (A) of the wrench. They will then insert the second rebar wire into the second through hole (B) found on the wrench head (A) The head (A) will then be positioned close to or at a distance from the first rebar wire wrap. This spacing of the wrench head with respect to the first wrap will determine the tightness wrench head with respect to the first wrap will determine the tightness of the wrap. One hand will support the shaft directly behind the two hollow tubes and the second hand will be placed on the handle. Rotation of the handle will wrap the rebar wire. This method of wire wrapping reduces the stress to the hand, wrist and forearms. It provides a consistent wrap and is faster then the present methods of using pliers to wrap rebar wire. The Rebar Tie Wrench shall be manufactured using an Aluminum Casting or a High Impact Plastic Molding process.
FIG. 1, Front view of the Rebar Tie Wrench.
FIG. 2, Right side view of the Rebar Tie Wrench.
FIG. 3, Section A-A view looking down on the Head (A) of the Rebar Tie Wrench.
This invention allows a Rebar Wire installation that will reduces stress to the hands, wrist and forearms.
This invention will increase the speed of the rebar wire winding over the present method of rotating the hands, wrist and forearms 180 degrees and then repositioning the pliers to obtain another 180 degree wrap.
This is accomplished by inserting the rebar wire ends (2) into the Hollow tubes (B) found at the narrow end of the head (A) of the wrench.
The installer positions the Shaft (C) between the thumb and first finger of the left hand to support the shaft and maintain the distance between the Head (A) and the rebar wrap.
This distance between the Head (A) and the rebar wire previous wrap will determine the tightness of the wire wrap.
The Handle (E) is then rotated 360 degrees by the right hand.