Patent ID: 8992338
Filing Date: 2015-03-31
Classification: A63B

Abstract:
1. A golf club head comprising: a front portion comprising a striking face, a rear end, a toe, a heel, a crown, a sole, and a hosel; wherein the crown comprises front portion, a rear portion, and a stepped portion positioned between the front portion of the crown and the rear portion of the crown, wherein an external surface of the stepped portion of the crown has an angle of declination μ that is greater than an angle of declination μ of adjacent portions of the front portion and the rear portion; wherein the stepped portion of the crown extends from a heelward side of the crown in a toeward and rearward direction that forms an average angle α of at least about 10° relative to a plane perpendicular to the y-axis; wherein the golf club head has a center of gravity has a z-coordinate of less than or equal to −1.4 mm; and wherein an aerodynamic drag of the club head is about 1000 grams or less when air speed is 120 mph at a pitch angle of 0° and a beta angle of 20°.