Sea plane sole for a golf club

A head portion of a wood-type golf club, comprising:

• a. a striking face on a front portion of the head;
• b. a rear portion opposite the front portion;
• c. a heel;
• d. a toe;
• and
• e. a sole having a contoured surface extending from a leading edge of the striking face towards the rear portion of the head, the contoured surface having a first portion beginning at the leading edge of the striking face and extending a predetermined distance toward the rear portion of the head, the first portion of the contoured surface having a convex camber of a predetermined radius, wherein the first portion of the contoured surface comprises means for elevating the leading edge of the striking face above a ground plane when the head is at address and at impact with a golf ball, thereby reducing an amount of physical contact of the sole with the ground plane, the contoured surface having a second portion beginning at the end of the first portion and extending the remaining distance towards the rear portion of the clubhead, the second portion of the contoured surface having a concave camber of a predetermined radius, wherein the second portion of the contoured surface comprises means for elevating the second portion of the contoured surface above the ground plane, at a highest point of the second portion above the ground plane which is higher than the elevation of the leading edge of the striking face above the ground plane, when the head is at address and at impact with the golf ball, thereby reducing an amount of physical contact of the sole with the ground plane.

A head portion of a putter-type golf club, comprising:

• a. a striking face on a front portion of the head;
• b. a rear portion opposite the front portion;
• c. a heel;
• d. a toe;
• and
• e. a sole having a contoured surface extending from a leading edge of the striking face towards the rear portion of the head, the contoured surface having a first portion beginning at the leading edge of the striking face and extending a predetermined distance toward the rear portion of the head, the first portion of the contoured surface having a convex camber of a predetermined radius, wherein the first portion of the contoured surface comprises means for elevating the leading edge of the striking face above a ground plane when the head is at address and at impact with a golf ball, thereby reducing an amount of physical contact of the sole with the ground plane, the contoured surface having a second portion beginning at the end of the first portion and extending the remaining distance towards the rear portion of the clubhead, the second portion of the contoured surface having a concave camber of a predetermined radius, wherein the second portion of the contoured surface comprises means for elevating the second portion of the contoured surface above the ground plane, at a highest point of the second portion above the ground plane which is higher than the elevation of the leading edge of the striking face above the ground plane, when the head is at address and at impact with the golf ball, thereby reducing an amount of physical contact of the sole with the ground plane.