Golf club head and golf club

Abstract

A golf club head and golf club having large head dimensions, and large face characteristics, as well as unique mass property attributes driven by relationships not often considered in conventional club head design, to achieve a resistance to squaring the club head during a golf swing that is comfortable to the novice golfer, while increasing stability during off-center impacts and obtaining preferred launch characteristics. This is achieved in part via establishing a club head configuration and associated weight distribution to yield a center of gravity location that results in a preferred magnitude of Delta 1 and Delta 2 values, CG angle, moments of inertia, and associated ratios, relationships, and club head mass property characteristics influenced by these variables to achieve improved performance.

We claim: 
     
         1 . A golf club head, comprising:
 a body defining an interior cavity, a sole portion positioned at a bottom portion of the golf club head, a crown portion positioned at a top portion of the golf club head, a forward portion, a rearward portion, a volume, and a face having an ideal impact location, a roll, a bulge, a face area of at least 5000 mm 2 , a face height of no more than 70 mm, and a face width;   the golf club head has a head weight of less than 210 grams, a head height, a head width of at least 120 mm, a head depth that is greater than 85% of the head width, a Delta 1  value, a Delta 2  value, a CG angle that is at least 14 degrees, a head origin x-axis (CGx) coordinate, a head origin y-axis (CGy) coordinate that is at least 25 mm, a head origin z-axis (CGz) coordinate, a Zup value of no more than 30 mm, a moment of inertia about a golf club head center-of-gravity x-axis, Ixx, that is at least 300 kg·mm 2 , a moment of inertia about a golf club head center-of-gravity y-axis, Iyy, that is no more than 525 kg·mm 2 , a moment of inertia about a golf club head center-of-gravity z-axis, Izz, that is at least 575 kg·mm 2 , and a hosel axis moment of inertia, Ih, that is at least 900 kg·mm 2 ; wherein:   a depth-to-Zup ratio of the head depth to the Zup value is at least 3.75; and   a roll-to-FH ratio of the roll to the face height is no more than 6.5.