US Patent 7758453 Golf club head

A golf club head according to one or more aspects of the present invention comprises a striking surface having a face center, a crown portion, and a sole portion, four quadrants, and a linear stiffening element coupled to at least one of the crown portion and the sole portion. The linear stiffening element may extend from the heel region to the toe region of the club head. The stiffening element is disposed in at least three of the four quadrants, at an angle between 50° and 85° relative to an imaginary vertical plane oriented substantially perpendicular to the striking surface and containing the face center. The stiffening element has a survey length, the ratio of the overall width to the survey length being less than 0.97.