Patent ID: 6298704
Filing Date: 2001-10-09
Classification: B21D

Abstract:
A portable workpiece bending apparatus for selectively bending an elongated workpiece at selected portions of the workpiece along its length and allowing transaxial loading and unloading of the workpiece comprising; a frame having a substantially flat face, a clamp connected to the frame for selectively securing the frame to a support with the face substantially perpendicular to the support, a pair of spaced apart idler rollers mounted on the flat face, each of said idler rollers rotating on a respective axis substantially perpendicular to the flat face to provide a horizontal support, an operator yoke mounted on the flat face, said operator yoke having a rod sleeve, a handle pivotedly connected to the operator yoke and spaced from the rod sleeve, a toggle connected to the handle, an actuator rod slidably mounted in the rod sleeve and having one end connected to the toggle for longitudinal movement of the actuator rod along its length, a turnbuckle nut threadedly connected to the actuator rod, a clevis rod threadedly connected to the turnbuckle nut, a clevis connected to the clevis rod, a carrier pivotedly connected to the clevis, a guide aperture in the flat face of the frame, a guide mounted on the carrier and positioned in the guide aperture to limit movement of the carrier to a straight line motion, a drive roller rotatably mounted on the carrier, said drive roller having its axis of rotation parallel to the axis of rotation of each of the idler rollers, a crank connected to the drive roller for selectively rotating the drive roller, whereby positioning of the drive roller between the spaced idler rollers bends a workpiece in engagement with the idler rollers and the drive roller, rotation of the drive roller bends the workpiece at a selected portion of the workpiece through operation of the handle, and the toggle selectively moves the carriage with the drive roller relative to the idler rollers to allow transaxial loading and unloading of the elongated workpiece.