Patent ID: 7670129

Claim:
Apparatus for bending gypsum board comprising: a) a resiliently bendable panel bounded by flat upper and lower surfaces and a substantially rectangular perimeter, b) a bender shell comprised of a rigid wall of arcuate cylindric contour bounded by smooth interior and exterior concentric surfaces convexly curved rearwardly with respect to spaced apart parallel straight upper and lower front edges, and extending laterally to two spaced apart parallel curved side edges, said arcuate wall and edges defining a hollow interior region, c) gripping means for securing a leading edge of a gypsum board at a site adjacent the lower edge of said wall in association with said exterior surface, d) circular cylindrical weight means adapted to roll in planetary manner upon said interior surface, and e) an extension ramp extending forwardly of said lower edge for the purpose of positioning said weight means to begin rolling movement into said interior region.