Patent ID: 7210664
Filing Date: 2007-05-01
Classification: E04G

Abstract:
1. A concrete form having a flexible panel member with an upstanding perimetral flange projected laterally from one side thereof and wherein said flange has a pair of transversely opposite side sections disposed on opposite ends of said form each of which side sections has a terminal surface portion extended inwardly in a direction parallel to said one side of the form, each of said opposite flange side sections is divided into a plurality of segments by a plurality of notches longitudinally spaced over the length thereof, with each notch terminating in a V-shape portion having the apex thereof adjacent said one side of the panel member whereby said panel member is laterally flexibly movable to a preselected generally curve shape, a plurality of bendable metal strap segments aligned end-to-end, and a plurality of central flange segments each having a terminal surface portion separated by a V-shaped notch, and each of said plurality of bendable metal strap segments interconnecting one of said plurality of central flange segments with a pair of flange segments adjacent on either side of each of said plurality of central flange segments, the improvement comprising a plurality of supplemental bridging straps each connected across a pair of adjacent bendable metal strap segments and to the corresponding flange segments.