Golf club head

A golf club head comprising:

• a face member composed of a vitreous metal material, the face member comprising a face plate for striking a golf ball having an exterior surface and an interior surface, the face plate extending from a heel section of the golf club head to a toe section of the golf club head, a face extension extending laterally rearward from a perimeter of the face plate;
• a crown secured to the upper portion of the face extension at a distance ranging from 0.2 inch to 1.0 inch from the perimeter of the face plate;
• and a sole plate secured to the lower portion of the face extension at a distance ranging from 0.2 inch to 1.0 inch from the perimeter of the face plate;
• wherein the face plate comprises a central circular region having a base thickness ranging from 0.090 inch to 0.110 inch, a first concentric region having a first thickness ranging from 0.082 inch to 0.097 inch wherein the base thickness is greater than the first thickness, a second concentric region having a second thickness ranging from 0.070 inch to 0.94 inch wherein the first thickness is greater than the second thickness, a third concentric region having a third thickness ranging from 0.0.70 to 0.090 inch wherein the second thickness is greater than the third thickness, and a periphery region having a fourth thickness ranging from 0.061 inch to 0.069 inch wherein the fourth thickness is less than the third thickness.

A golf club head comprising:

• a face member composed of a vitreous metal material, the face member comprising a face plate for striking a golf ball having an exterior surface and an interior surface, the face plate extending from a heel section of the golf club head to a toe section of the golf club head, a face extension extending laterally rearward from a perimeter of the face plate, and an interior tubing for receiving a shaft, the interior tubing engaging an upper portion of the face extension and a lower portion of the face extension;
• a crown secured to the upper portion of the face extension at a distance ranging from 0.2 inch to 1.0 inch from the perimeter of the face plate;
• and a sole plate secured to the lower portion of the face extension at a distance ranging from 0.2 inch to 1.0 inch from the perimeter of the face plate;
• wherein the face plate has concentric regions of varying thickness with the thickest region in the center, and wherein the golf club head has a volume no greater than 400 cubic centimeters and a coefficient of restitution of ranging from 0.80 to 0.93 under standard USGA conditions.

A golf club head comprising:

• a face member composed of a vitreous metal material, the face member comprising a face plate for striking a golf ball having an exterior surface and an interior surface, the face plate extending from a heel section of the golf club head to a toe section of the golf club head, a face extension extending laterally inward from a perimeter of the face plate, and an interior tubing for receiving a shaft, the interior tubing engaging an upper portion of the face extension and a lower portion of the face extension;
• a crown secured to the upper portion of the face extension at a distance ranging from 0.2 inch to 1.0 inch from the perimeter of the face plate;
• and a sole plate secured to the lower portion of the face extension at a distance ranging from 0.2 inch to 1.0 inch from the perimeter of the face plate;
• wherein the lower portion of the face extension has a bore section extending about the interior tubing, the bore section having a width greater than the entirety of the lower portion of the face extension;
• and wherein the golf club head has a volume no greater than 400 cubic centimeters and a coefficient of restitution of ranging from 0.80 to 0.93 under standard USGA conditions.