Flush wooden door warping prevention reinforcement - involves U=profiles round wing frame interior conveying stress via horizontal profiles

摘要

Reinforcing profiles with high resistance to bending, are made of steel, aluminum or plastics. They are incorporated in the wooden door subjected to loading on one side, and resist the tendency of the door to warp. U-profile units (2) run round inside the wing frame(1) related to expansion coefficient (7), converging stresses to the inside rectangular frame (3) via the horizontal profiles (4). All profile pieces are securely welded together. Reinforcing profiles may be widened by rectangular profiles (9) if necessary.