Reinforced metal shell golf club head, with keel
First Claim
1. A reinforced metallic shell golf club head, comprising(a) a thin steel shell having the exterior form of said head, the shell extending about a hollow,(b) the head having a front wall with a front face adapted to strike a golf ball, said front wall having a mid-portion, and other wall structure rearward of a plane defined by said face, said other structure including a thin rear wall which is rearwardly convergent both generally vertically and generally horizontally to form a rearwardmost local concavity facing directly forwardly toward said front wall mid-portion, said concavity having the form of a corner in a rearwardly extending vertical plane,(c) and a strut in the form of a steel rod extending in said hollow from the rear side of said front wall mid-portion to the front side of the said rear wall at said local concavity to transmit loading therebetween in response to said ball striking said front face, thereby to resist deformation of said front wall, the entirety of the rod confined within said hollow,(d) said other wall structure including a toe and heel, and top and bottom walls, the rod generally centrally located between said toe and heel and between said top and bottom walls, the rod having a diameter between 3/32 and 1/4 inch,(e) said front wall having thickness between 0.105 and 0.125 inches, and the rear wall, top wall and bottom wall each having thickness between 0.030 and 0.050 inches.
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Accused Products
Abstract
A reinforced metallic golf club head comprises:
(a) a metallic shell having the exterior form of the head, the shell extending about a hollow,
(b) the head having a front wall with a front face adapted to strike a golf ball, and other wall structure rearward of a plane defined by the face,
(c) and a strut extending in the hollow between the front wall and the other wall structure to transmit loading therebetween in response to the ball striking the front face, thereby to resist deformation of the front wall.
The strut may be located generally above a keel on the head; and reinforcement ribbing may be provided on the front wall of the head.
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Citations
19 Claims
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1. A reinforced metallic shell golf club head, comprising
(a) a thin steel shell having the exterior form of said head, the shell extending about a hollow, (b) the head having a front wall with a front face adapted to strike a golf ball, said front wall having a mid-portion, and other wall structure rearward of a plane defined by said face, said other structure including a thin rear wall which is rearwardly convergent both generally vertically and generally horizontally to form a rearwardmost local concavity facing directly forwardly toward said front wall mid-portion, said concavity having the form of a corner in a rearwardly extending vertical plane, (c) and a strut in the form of a steel rod extending in said hollow from the rear side of said front wall mid-portion to the front side of the said rear wall at said local concavity to transmit loading therebetween in response to said ball striking said front face, thereby to resist deformation of said front wall, the entirety of the rod confined within said hollow, (d) said other wall structure including a toe and heel, and top and bottom walls, the rod generally centrally located between said toe and heel and between said top and bottom walls, the rod having a diameter between 3/32 and 1/4 inch, (e) said front wall having thickness between 0.105 and 0.125 inches, and the rear wall, top wall and bottom wall each having thickness between 0.030 and 0.050 inches.
Specification