Golf club head
First Claim
Patent Images
1. A hollow golf club head comprising:
- a metal member made of at least one kind of metal material having at least one opening in a crown portion thereof; and
a FRP member made of a fiber reinforced resin attached to the metal member so as to cover the opening,the fiber reinforced resin formed from a plurality of prepreg plies each having a magnitude covering the opening, andthe prepreg plies comprising a plurality of unidirectional plies each having fibers aligned along an unidirection, whereinthe unidirectional plies comprise at least “
n”
(in this case, “
n”
is an integral number not less than 3 and not more than
6) kinds of plies each having fibers aligned in different directions, the “
n”
kinds plies being used in successive unidirectional plies,the unidirectional plies are laminated without directly laminating the same kind of two plies, andin a standard condition of the club head being grounded on a horizontal plane and oriented at its lie angle and its loft angle, the directions of the fibers of the “
n”
kind of unidirectional plies, in plan view, intersect at an angle (180/n) degrees obtained by substantially dividing 180 degrees by the integral number n in the crown portion.
2 Assignments
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Accused Products
Abstract
A hollow golf club head comprises:
- a metal member made of at least one kind of metal material having at least one opening in a crown portion thereof; and a FRP member made of a fiber reinforced resin attached to the metal member so as to cover the opening,
- the fiber reinforced resin formed from a plurality of prepreg plies each having a magnitude covering the opening, and
- the prepreg plies comprising a plurality of unidirectional plies each having fibers aligned along an unidirection, wherein
- the unidirectional plies comprise at least “n” kinds of (in this case, “n” is an integral number not less than 3 and not more than 6) plies which are laminated in a state in which directions of the fibers are differentiated, and
- in a standard condition of being grounded on a horizontal plane at prescribed lie angle and loft angle, the directions of the fibers of the “n” kind of unidirectional plies seeing through a plane intersect at an angle (180/n) degrees obtained by substantially dividing 180 degrees by the integral number n in the crown portion.
72 Citations
11 Claims
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1. A hollow golf club head comprising:
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a metal member made of at least one kind of metal material having at least one opening in a crown portion thereof; and a FRP member made of a fiber reinforced resin attached to the metal member so as to cover the opening, the fiber reinforced resin formed from a plurality of prepreg plies each having a magnitude covering the opening, and the prepreg plies comprising a plurality of unidirectional plies each having fibers aligned along an unidirection, wherein the unidirectional plies comprise at least “
n”
(in this case, “
n”
is an integral number not less than 3 and not more than
6) kinds of plies each having fibers aligned in different directions, the “
n”
kinds plies being used in successive unidirectional plies,the unidirectional plies are laminated without directly laminating the same kind of two plies, and in a standard condition of the club head being grounded on a horizontal plane and oriented at its lie angle and its loft angle, the directions of the fibers of the “
n”
kind of unidirectional plies, in plan view, intersect at an angle (180/n) degrees obtained by substantially dividing 180 degrees by the integral number n in the crown portion. - View Dependent Claims (2, 3, 4)
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5. A hollow golf club head comprising:
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a metal member made of at least one kind of metal material having at least one opening being provided astride a crown portion and a side portion of the club head; and a FRP member made of a fiber reinforced resin attached to the metal member so as to cover the opening, the FRP member comprising a main part forming a part of the crown portion and a side part folded from the main part to the side portion to form a part of the side portion of the club head, the fiber reinforced resin formed from a plurality of prepreg plies each having a magnitude covering the opening, each prepreg ply being provided with at least one slit to make it easy to form the side part by folding, and the prepreg plies comprising a plurality of unidirectional plies each having fibers aligned along an unidirection, wherein the unidirectional plies comprise at least “
n”
(in this case, “
n”
is an integral number not less than 3 and not more than
6) kinds of plies each having fibers aligned in different directions,in a standard condition of the club head being grounded on a horizontal plane and oriented at its lie angle and its loft angle, the directions of the fibers of the “
n”
kind of unidirectional plies, in plan view, intersect at an angle (180/n) degrees obtained by substantially dividing 180 degrees by the integral number n in the crown portion. - View Dependent Claims (6, 7, 8)
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9. A hollow golf club head comprising:
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a metal member made of at least one kind of metal material having at least one opening in a crown portion of the club head; and a FRP member made of a fiber reinforced resin attached to the metal member so as to cover the opening, the fiber reinforced resin formed from a plurality of prepreg plies each having a magnitude covering the opening, the prepreg plies comprising a plurality of unidirectional plies each having fibers aligned along an unidirection and at least one cloth ply having woven fibers extending in two directions and arranged on the outermost side, each fiber of each unidirectional ply being allocated by arranging bundle bodies each consisting of fiber filaments of from 6000 to 40000 bundled previously, and each fiber of the cloth ply being allocated by arranging bundle bodies each consisting of fiber filaments being smaller than that of the bundle body of the unidirectional ply, wherein the unidirectional plies comprise at least “
n”
(in this case, “
n”
is an integral number not less than 3 and not more than
6) kinds of plies each having fibers aligned in different directions,in a standard condition of the club head being grounded on a horizontal plane and oriented at its lie angle and its loft angle, the directions of the fibers of the “
n”
kind of unidirectional plies, in plan view, intersect at an angle (180/n) degrees obtained by substantially dividing 180 degrees by the integral number n in the crown portion. - View Dependent Claims (10, 11)
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Specification
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Current AssigneeSRI Sports Limited (Sumitomo Rubber Industries Limited)
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Original AssigneeSRI Sports Limited (Sumitomo Rubber Industries Limited)
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InventorsOyama, Hitoshi
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Primary Examiner(s)Passaniti; Sebastiano
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Application NumberUS11/050,774Publication NumberTime in Patent Office932 DaysField of Search473324-350US Class Current473/345CPC Class CodesA63B 2209/02 with reinforcing fibres, e....A63B 2209/023 Long, oriented fibres, e.g....A63B 53/0408 characterised by specific d...A63B 53/0412 VolumeA63B 53/0433 with special sole configura...A63B 53/0437 with special crown configur...A63B 53/0466 wood-typeA63B 53/0487 for putters A63B53/065 take...A63B 60/00 Details or accessories of g...
