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US 7,435,190 B2Granted
Golf club head
AssigneeSRI Sports Limited
InventorYasushi Sugimoto
Life of this patent
Estimating the term…
Abstract
A hollow golf club head comprises a main body made of at least one kind of metal material, said main body provided with an opening having a surface area projected onto the head surface in the range of from 15% to 70% of the entire surface area of the head, and a cover member attached to said main body so as to cover said opening, said cover member made of a fiber reinforced resin having a resin content in the range of from 25% to 60%.
Claims19
A hollow golf club head comprising
- a main body made of at least one kind of metal material, said main body provided with a plurality of openings, a total surface area of the openings projected onto the head surface being from 15% to 70% of the entire surface area of the head, and
- a plurality of cover members provided apart from each other respectively and attached to said main body using an adhesive agent so as to cover said openings, said cover members made of a fiber reinforced resin, and the plurality of cover members comprising at least two kinds of cover members having different percentage resin contents.
A hollow golf club head comprising
- a main body made of at least one kind of metal material, said main body provided with an opening, a surface area of the opening projected onto the head surface being from 15% to 70% of the entire surface area of the head, and
- a cover member attached to said main body using an adhesive agent so as to cover said opening, said cover member made of a fiber reinforced resin having a resin content in the range of from 25% to 60%, wherein
- the opening comprises an upper opening provided on a crown portion of the head,
- the cover member comprises an upper cover member covering the upper opening without a gap in the coverage of the upper opening provided by the upper cover member,
- a crown receiving portion is provided around the upper opening, and
- the crown receiving portion has a stepped face for contacting and providing uninterrupted support for an inner surface of a peripheral portion of the upper cover member.
3 more elements
A hollow golf club head comprising
- a main body made of at least one kind of metal material, said main body provided with an opening, a surface area of the opening projected onto the head surface being from 15% to 70% of the entire surface area of the head, and
- a cover member attached to said main body using an adhesive agent so as to cover said opening, said cover member made of a fiber reinforced resin having a resin content in the range of from 25% to 60%, wherein
- the opening comprises an upper opening provided on a crown portion of the head,
- the cover member comprises an upper cover member covering the upper opening, and
- the ratio (L1/La) between a head length La corresponding to a maximum length in a front-back direction of the head and a horizontal shortest distance L1 in the front-back direction from the leading edge Le to the upper opening is not less than 0.40.
2 more elements
A hollow golf club head comprising
- a main body made of at least one kind of metal material, said main body provided with an opening, a surface area of the opening projected onto the head surface being from 15% to 70% of the entire surface area of the head, and
- a cover member attached to said main body using an adhesive agent so as to cover said opening, said cover member made of a fiber reinforced resin having a resin content in the range of from 25% to 60%, wherein
- the opening comprises a lower opening provided on a sole portion of the head,
- the cover member comprises a lower cover member covering the lower opening, and
- the ratio (L2/La) between a head length La corresponding to a maximum length in a front-back direction of the head and a horizontal shortest distance L2 from the leading edge Le to the lower opening is not less than 0.30.
2 more elements
Dependencies are inferred from the claim text.