Golf club head
First Claim
Patent Images
1. A golf club head comprising:
- a main body and a face member attached to the main body, the face member comprising a main portion and an extended part, the main portion forming a ball striking face, the extended part extending 5 to 30 mm backward from at least part of the edge of the ball striking face, and the extended part having a thickness less than a thickness of the main portion;
wherein the extended part includes a crown-side extended part forming a part of a crown portion of the head, and a sole-side extended part forming a part of a sole portion of the head;
wherein given that, in at least a cross section of the golf club head along a vertical place including a normal line drawn to the ball striking face at the center point thereof, “
ta1”
is a thickness measured at a point on the ball striking face at a distance of 5 mm along the ball striking face from the upper edge of the ball striking face, and “
tb1”
is a thickness measured at a point on the crown-side extended part at a distance of 5 mm from the upper edge along the crown-side extended part, the difference (ta1−
tb1) of the thickness ta1 from the thickness tb1 is in a range of from 1.0 to 2.5 mm; and
wherein given that, in at least a cross section of the golf club head along a vertical plane including a normal line drawn to the ball striking face at the center point, “
ta2”
is a thickness measured at a point on the ball striking face at a distance of 5 mm along the ball striking face from the lower edge of the ball striking face, and “
tb2”
is a thickness measured at a point on the sole-side extended part at a distance of 5 mm along the sole-side extended part from the lower edge, the difference (ta2−
tb2) of the thickness “
ta2”
from the thickness “
tb2”
is in a range of from 1.0 to 2.5 mm.
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Accused Products
Abstract
A golf club head comprises a main body and a face member attached to the main body. The face member comprises a main portion forming a ball striking face and an extended part. The extended part extends 5 to 30 mm backward from at least part of the edge of the ball striking face. The thickness of the extended part is less than the thickness of the main portion.
214 Citations
9 Claims
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1. A golf club head comprising:
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a main body and a face member attached to the main body, the face member comprising a main portion and an extended part, the main portion forming a ball striking face, the extended part extending 5 to 30 mm backward from at least part of the edge of the ball striking face, and the extended part having a thickness less than a thickness of the main portion;
wherein the extended part includes a crown-side extended part forming a part of a crown portion of the head, and a sole-side extended part forming a part of a sole portion of the head;
wherein given that, in at least a cross section of the golf club head along a vertical place including a normal line drawn to the ball striking face at the center point thereof, “
ta1”
is a thickness measured at a point on the ball striking face at a distance of 5 mm along the ball striking face from the upper edge of the ball striking face, and “
tb1”
is a thickness measured at a point on the crown-side extended part at a distance of 5 mm from the upper edge along the crown-side extended part, the difference (ta1−
tb1) of the thickness ta1 from the thickness tb1 is in a range of from 1.0 to 2.5 mm; and
wherein given that, in at least a cross section of the golf club head along a vertical plane including a normal line drawn to the ball striking face at the center point, “
ta2”
is a thickness measured at a point on the ball striking face at a distance of 5 mm along the ball striking face from the lower edge of the ball striking face, and “
tb2”
is a thickness measured at a point on the sole-side extended part at a distance of 5 mm along the sole-side extended part from the lower edge, the difference (ta2−
tb2) of the thickness “
ta2”
from the thickness “
tb2”
is in a range of from 1.0 to 2.5 mm.- View Dependent Claims (4, 5, 6, 7, 8, 9)
the face member is a single-piece and made of a beta-type titanium alloy. -
6. A golf club head according to any of claims 1, 2 or 3, wherein
the main body is a single-piece casting of an alpha-beta-type titanium alloy. -
7. A golf club head according to any of claims 1, 2 or 3, wherein
the main body is a single-piece casting of an alpha-beta-type titanium alloy, and the face member is single-piece and made of a beta-type titanium alloy. -
8. A golf club head according to any one of claims 1, 2 or 3, wherein the difference (ta1−
- tb1) is in a range of from 1.2 to 2.0 mm, and wherein the difference (ta2−
tb2) is in a range of from 1.0 to 2.0 mm.
- tb1) is in a range of from 1.2 to 2.0 mm, and wherein the difference (ta2−
-
9. A golf club head according to any one of claims 1, 2 or 3, wherein the difference (ta1−
- tb1) is in a range of from 1.3 to 1.5 mm, and wherein the difference (ta2−
tb2) is in a range of from 1.3 to 1.5 mm.
- tb1) is in a range of from 1.3 to 1.5 mm, and wherein the difference (ta2−
-
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2. A golf club head comprising:
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a main body and a face member attached to the main body, the face member comprising a main portion and an extended part, the main portion forming a ball striking face, the extended part extending 5 to 30 mm backward from at least part of the edge of the ball striking face, and a thickness of the extended part being less than a thickness of the main portion;
wherein the extended part include a crown-side extended part forming a part of a crown portion of the head, and a sole-side extended part forming a part of a sole portion of the head; and
wherein given that, in at least a cross section of the golf club head along a vertical place including a normal line drawn to the ball striking face at the center point thereof, “
ta1”
is a thickness measured at a point on the ball striking face at a distance of 5 mm along the ball striking face from the upper edge of the ball striking face, and “
tb1”
is a thickness measured at a point on the crown-side extended part at a distance of 5 mm from the upper edge along the crown-side extended part, the difference (ta1−
tb1) of the thickness ta1 from the thickness tb1 is in a range of from 1.0 to 2.5 mm.
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3. A golf club head wherein
a main body and a face member attached to the main body, the face member comprising a main portion and an extended part, the main portion forming a ball striking face, the extended part extending 5 to 30 mm backward from at least part of the edge of the ball striking face, and a thickness of the extended part being less than a thickness of the main portion; -
wherein the extended part includes a crown-side extended part forming a part of a crown portion of the head, and a sole-side extended part forming a part of a sole portion of the head; and
wherein given that, in at least a cross section of the golf club head along a vertical plane including a normal line drawn to the ball striking face at the center point, “
ta2”
is a thickness measured at a point on the ball striking face at a distance of 5 mm along the ball striking face from the lower edge of the ball striking face, and “
tb2”
is a thickness measured at a point on the sole-side extended part at a distance of 5 mm along the sole-side extended part from the lower edge, the difference (ta2−
tb2) of the thickness “
ta2”
from the thickness “
tb2”
is in a range of from 1.0 to 2.5 mm.
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Specification
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- Resources
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Current AssigneeSumitomo Rubber Industries Limited
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Original AssigneeSumitomo Rubber Industries Limited
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InventorsKouno, Masaru
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Primary Examiner(s)Passaniti, Sebastiano
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Application NumberUS10/172,991Publication NumberTime in Patent Office665 DaysField of Search473/324, 473/345, 473/346, 473/329, 473/349, 473/350, 473/290, 473/291, 473/292, 473/342US Class Current473/345CPC Class CodesA63B 2209/00 Characteristics of used mat...A63B 53/04 HeadsA63B 53/0408 characterised by specific d...A63B 53/0466 wood-typeA63B 60/00 Details or accessories of g...
