Golf club head
First Claim
1. A golf club head comprising:
- a face portion having a front face forming a club face and a rear face facing a hollow;
a sole portion extending backward from the face portion and having an inner surface facing the hollow and an outer surface forming an undersurface of the head, the sole portion provided with a tubular part having a hole that forms a socket; and
a weight member secured in the socket,whereinthe tubular part protrudes from the inner surface of the sole portion into the hollow,the sole portion is provided on the outer surface with at least one stiffening groove so that said at least one stiffening groove forms at least one stiffening rib on the inner surface of the sole portion, andthe stiffening groove is partially included in a vicinity zone which is defined as extending 10 mm from the socket,whereinsaid at least one stiffening groove is a toe-side groove and a heel-side groove each not connected to the socket,the heel-side groove extends towards a heel side from a starting point within the vicinity zone while curving towards a club face side, andthe toe-side groove extends towards a toe side from a starting point within the vicinity zone while curving towards a club face side.
3 Assignments
0 Petitions
Accused Products
Abstract
A golf club head comprises: a face portion having a front face forming a club face and a rear face facing a hollow; a sole portion extending backward from the face portion and having an outer surface forming an undersurface of the head and an inner surface facing the hollow, the sole portion provided with a tubular part whose hole forms a socket; and a weight member secured in the socket. The tubular part protrudes from the inner surface of the sole portion into the hollow. The sole portion is provided on the outer surface with at least one stiffening groove so that said at least one stiffening groove forms at least one stiffening rib on the, inner surface of the sole portion, and the stiffening groove is partially included in a vicinity zone which is defined as extending 10 mm from the socket.
285 Citations
10 Claims
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1. A golf club head comprising:
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a face portion having a front face forming a club face and a rear face facing a hollow; a sole portion extending backward from the face portion and having an inner surface facing the hollow and an outer surface forming an undersurface of the head, the sole portion provided with a tubular part having a hole that forms a socket; and a weight member secured in the socket, wherein the tubular part protrudes from the inner surface of the sole portion into the hollow, the sole portion is provided on the outer surface with at least one stiffening groove so that said at least one stiffening groove forms at least one stiffening rib on the inner surface of the sole portion, and the stiffening groove is partially included in a vicinity zone which is defined as extending 10 mm from the socket, wherein said at least one stiffening groove is a toe-side groove and a heel-side groove each not connected to the socket, the heel-side groove extends towards a heel side from a starting point within the vicinity zone while curving towards a club face side, and the toe-side groove extends towards a toe side from a starting point within the vicinity zone while curving towards a club face side. - View Dependent Claims (5, 6, 7, 8, 9, 10)
the weight member comprises;
a threaded part engaging with the threaded part of the socket; and
an increased-diameter part placed within the outer part of the socket.
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2. A golf club head comprising:
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a face portion having a front face forming a club face and a rear face facing a hollow; a sole portion extending backward from the face portion and having an inner surface facing the hollow and an outer surface forming an undersurface of the head, the sole portion provided with a tubular part having a hole that forms a socket; and a weight member secured in the socket, wherein the tubular part protrudes from the inner surface of the sole portion into the hollow, the sole portion is provided on the outer surface with at least one stiffening groove so that said at least one stiffening groove forms at least one stiffening rib on the inner surface of the sole portion, and the stiffening groove is partially included in a vicinity zone which is defined as extending 10 mm from the socket, wherein said at least one stiffening groove is a toe-side groove and a heel-side groove each connected to the socket, the heel-side groove extends towards a heel side from the socket while curving towards a club face side, and the toe-side groove extends towards a toe side from the socket while curving towards a club face side.
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3. A golf club head comprising:
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a face portion having a front face forming a club face and a rear face facing a hollow; a sole portion extending backward from the face portion and having an inner surface facing the hollow and an outer surface forming an undersurface of the head, the sole portion provided with a tubular part having a hole that forms a socket; and a weight member secured in the socket, wherein the tubular part protrudes from the inner surface of the sole portion into the hollow, the sole portion is provided on the outer surface with at least one stiffening groove so that said at least one stiffening groove forms at least one stiffening rib on the inner surface of the sole portion, and the stiffening groove is partially included in a vicinity zone which is defined as extending 10 mm from the socket, wherein said at least one stiffening groove is a groove extending straight towards the club face from a starting point within the vicinity zone, and a groove extending straight towards the back side of the head from a starting point within the vicinity zone.
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4. A golf club head comprising:
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a face portion having a front face forming a club face and a rear face facing a hollow; a sole portion extending backward from the face portion and having an inner surface facing the hollow and an outer surface forming an undersurface of the head, the sole portion provided with a tubular part having a hole that forms a socket; and a weight member secured in the socket, wherein the tubular part protrudes from the inner surface of the sole portion into the hollow, the sole portion is provided on the outer surface with at least one stiffening groove so that said at least one stiffening groove forms at least one stiffening rib on the inner surface of the sole portion, and the stiffening groove is partially included in a vicinity zone which is defined as extending 10 mm from the socket, wherein said at least one stiffening groove is a single groove extending straight in the heel-and-toe direction of the head, and the minimum distance between the stiffening groove and the socket is in a range of from 1.0 to 10.0 mm and occurs in the middle of the length of the stiffening groove.
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Specification