US Patent 10238933 Golf club head having adjustable stress-reducing structures

A golf club head comprising a body and a plurality of adjustable stiffening members is disclosed herein. The body comprises a face section, a sole section, and a crown section or a return section, and also defines a hollow interior. Each of the plurality of stiffening members is at least partially disposed within the hollow interior, and extends from the crown section or return section to the sole section to reduce stresses placed on the face during impact with a golf ball. The stiffening members, each of which comprises a rod and a tube, may be adjusted to be in compression or tension, thereby preloading the body and affecting the stresses experienced by the golf club head upon impact with a golf ball.