Patent attributes
A method of forming a U-shaped strap for a pulley block starts with providing a strip-like blank of a metal which may be work-hardened and having an elongate central region and two end portions extending one from each end of the two opposed ends of the central region. Such a blank may be formed by a stamping operation typically from a suitable grade of stainless steel. The central region of the blank is bent round into a U-shape with the two end portions substantially parallel. Either concurrently with the bending operation or subsequent thereto, the central region is subjected to a cold-forming operation in the transverse direction of the central region, to reduce the width thereof and to provide a radius to the long edges of that central region.
