Golf club head
First Claim
1. A golf club head in which when a horizontal direction from a toe side toward a heel side is set to be an X direction, a vertical and upward direction is set to be a Y direction, coordinates of a center of a hitting surface are set to be (0, 0) and coordinates of a maximum resilience point in the hitting surface are set to be (x, y), and whereinthe maximum resilience point is displaced from the coordinates (0, 0);
- y is equal to or greater than −
5 mm and is equal to or smaller than 10 mm, and x is equal to or greater than −
10 mm and is equal to or smaller than −
3 mm;
a value of (t2−
t1) on the center of the hitting surface which is measured in accordance with a pendulum test determined by USGA is smaller than 250·
10−
6 second; and
the value of (t2−
t1) on the maximum resilience point which is measured in accordance with the pendulum test determined by the USGA is 250·
10−
6 second or more.
4 Assignments
0 Petitions
Accused Products
Abstract
A maximum resilience point (M) of a head (1) is positioned above a center (C) of a hitting surface. On the maximum resilience point (M), (t2−t1) measured in accordance with a pendulum test determined by USGA has a maximum value. When coordinates of the center (C) of the hitting surface are set to be (0, 0) and coordinates of the maximum resilience point (M) are set to be (x, y), y is greater than 0 mm and is equal to or smaller than 10 mm. The value of (t2−t1) on the maximum resilience point (M) is 250·10−6 second or more. The value of (t2−t1) on the center (C) of the hitting surface is smaller than 250·10−6 second. y may be set to be equal to or greater than −5 mm and to be smaller than 0 mm. x may be set to be equal to or greater than −10 mm and to be smaller than 0 mm. x may be set to be greater than 0 mm and to be equal to or smaller than 10 mm.
100 Citations
10 Claims
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1. A golf club head in which when a horizontal direction from a toe side toward a heel side is set to be an X direction, a vertical and upward direction is set to be a Y direction, coordinates of a center of a hitting surface are set to be (0, 0) and coordinates of a maximum resilience point in the hitting surface are set to be (x, y), and wherein
the maximum resilience point is displaced from the coordinates (0, 0); -
y is equal to or greater than −
5 mm and is equal to or smaller than 10 mm, and x is equal to or greater than −
10 mm and is equal to or smaller than −
3 mm;a value of (t2−
t1) on the center of the hitting surface which is measured in accordance with a pendulum test determined by USGA is smaller than 250·
10−
6 second; andthe value of (t2−
t1) on the maximum resilience point which is measured in accordance with the pendulum test determined by the USGA is 250·
10−
6 second or more. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A golf club head in which when a horizontal direction from a toe side toward a heel side is set to be an X direction, a vertical and upward direction is set to be a Y direction, coordinates of a center of a hitting surface are set to be (0, 0) and coordinates of a maximum resilience point in the hitting surface are set to be (x, y), and wherein
the maximum resilience point is displaced from the coordinates (0, 0); -
y is (1) equal to or greater than 6 mm and is equal to or smaller than 10 mm or (2) equal to or greater than −
5 mm and is equal to or smaller than −
3 mm, and x is equal to or greater than −
10 mm and is equal to or smaller than 10 mm;a value of (t2−
t1) on the center of the hitting surface which is measured in accordance with a pendulum test determined by USGA is smaller than 250·
10−
6 second; andthe value of (t2−
t1) on the maximum resilience point which is measured in accordance with the pendulum test determined by the USGA is 250·
10−
6 second or more. - View Dependent Claims (10)
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Specification
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- Resources
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Current AssigneeSumitomo Rubber Industries Limited
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Original AssigneeSRI Sports Limited (Sumitomo Rubber Industries Limited)
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InventorsKono, Masaru, Yamamoto, Akio, Yamaguchi, Tetsuo
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Primary Examiner(s)Passaniti; Sebastiano
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Application NumberUS10/791,845Publication NumberTime in Patent Office1,447 DaysField of Search473324-350US Class Current473/329CPC Class CodesA63B 53/0408 characterised by specific d...A63B 53/0462 characterised by tapering t...A63B 53/0466 wood-type
