Wood club head
First Claim
Patent Images
1. A wood club head comprising:
- a head main body defining a hollow portion, the head main body including a front face forming a hitting face and a rear face disposed behind the front face so as to form a gap of a predetermined width between the front face and the rear face, the rear face having a thickness in a range of 1.5 mm to 2.3 mm, wherein, when a golf ball is made to collide on the front face at an entrance speed V (m/s), a restitution coefficient of the front face is in a range of from 0.84 to 0.88 in a case where the entrance speed V is in a range of from 35 to 40 (m/s).
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Accused Products
Abstract
In a wood club head having a hollow metal shell structure with a double face constituted by a front face and a rear face which is disposed behind the front face through an air gap of predetermined width, there is provided a characteristic that when a golf ball is made to collide with the front face at an entrance speed (head speed) V (m/s), the restitution coefficient of the face is in a range of from 0.84 to 0.88 when the entrance speed V is in a range of from 35 to 40 (m/s), and not lower than 0.80 and lower than 0.83 when the entrance speed V is in a range of from 48 to 53 (m/s).
134 Citations
8 Claims
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1. A wood club head comprising:
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a head main body defining a hollow portion, the head main body including a front face forming a hitting face and a rear face disposed behind the front face so as to form a gap of a predetermined width between the front face and the rear face, the rear face having a thickness in a range of 1.5 mm to 2.3 mm, wherein, when a golf ball is made to collide on the front face at an entrance speed V (m/s), a restitution coefficient of the front face is in a range of from 0.84 to 0.88 in a case where the entrance speed V is in a range of from 35 to 40 (m/s). - View Dependent Claims (2, 3, 4)
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5. A wood club head comprising:
a head main body defining a hollow portion, the head main body including a front face forming a hitting face and a rear face disposed behind the front face so as to form a gap of a predetermined width, the rear face having a thickness in a range of 1.5 mm to 2.3 mm, wherein, when a golf ball is made to collide on the front face at an entrance speed V (m/s), a restitution coefficient of the front face is not lower than 0.80 but lower than 0.83 in a case where the entrance speed V is in a range of from 48 to 53 (m/s). - View Dependent Claims (6, 7, 8)
Specification