GOLF CLUB HEAD
First Claim
1. A hollow golf club head comprisinga face portion having a face for hitting a golf ball on its front and a crown portion forming a top surface of the head, whereinthe head comprises a face member including the face portion and made of a metallic material and a crown member attached to the face member to form the crown portion at least partially,the crown member includes a first member made of a metal material and a second member made of a fiber reinforced resin for supporting the first member so that the first member does not directly contact with the face member,the head has a primary natural frequency in a range of from 3800 to 6500 Hz andan anti node when the head vibrates in the primary natural mode appears in the first member.
2 Assignments
0 Petitions
Accused Products
Abstract
A hollow golf club head comprises a face portion with a face for hitting a ball on its front and a crown portion forming a top surface of the head, wherein the head comprises a face member including the face portion and made of a metallic material and a crown member attached to the face member to form the crown portion at least partially, the crown member includes a first member made of a metal material and a second member made of a fiber reinforced resin for supporting the first member so that the first member does not directly contact with the face member, the head has a primary natural frequency of from 3800 to 6500 Hz and an antinode when the head vibrates in the primary natural mode appears in the first member.
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Citations
12 Claims
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1. A hollow golf club head comprising
a face portion having a face for hitting a golf ball on its front and a crown portion forming a top surface of the head, wherein the head comprises a face member including the face portion and made of a metallic material and a crown member attached to the face member to form the crown portion at least partially, the crown member includes a first member made of a metal material and a second member made of a fiber reinforced resin for supporting the first member so that the first member does not directly contact with the face member, the head has a primary natural frequency in a range of from 3800 to 6500 Hz and an anti node when the head vibrates in the primary natural mode appears in the first member.
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5. A hollow golf club head comprising
a face portion having a face for hitting a golf ball on its front and a sole portion forming a bottom surface of the head, wherein the head comprises a face member including the face portion and made of a metallic material and a sole member attached to the face member to form the sole portion at least partially, the sole member includes a first member made of a metal material and a second member made of a fiber reinforced resin for supporting the first member so that the first member does not directly contact with the face member, the head has a primary natural frequency in a range of from 3800 to 6500 Hz and an anti node when the head vibrates in the primary natural mode appears in the first member.
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9. A hollow golf club head comprising
a face portion having a face for hitting a golf ball on its front, a crown portion forming a top surface of the head and a sole portion forming a bottom surface of the head, wherein the head comprises a face member including the face portion and made of a metallic material, the crown portion includes an upper first portion made of a metal material and an upper second portion made of a fiber reinforced resin for supporting the upper first portion so that the upper first portion does not directly contact with the face member, the sole portion includes a lower first portion made of a metal material and a lower second portion made of a fiber reinforced resin for supporting the lower first portion so that the lower first portion does not directly contact with the face member, the head has a primary natural frequency in a range of from 3800 to 6500 Hz and an anti node when the head vibrates in the primary natural mode appears in the upper and lower first member.
Specification