Golf club head

a golf club and club head technology, applied in golf clubs, racket sports, textiles and paper, etc., can solve the problems of difficult to impart spin to a hit ball, easy damage to the surface of the iron head, etc., and achieve the effect of superior ball-hit feeling and abrasion resistan

Inactive Publication Date: 2005-11-03
BRIDGESTONE SPORTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] The present invention provides a golf club head which is superior in ball-hit feeling as well as in abrasive resistance.

Problems solved by technology

However, because of low abrasive resistance, the iron head made of pure iron is easily damaged on its surface, and angular edges of score lines (lateral grooves on a face surface) are rounded at an early stage, thereby making it difficult to impart spin to a hit ball.

Method used

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  • Golf club head
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Embodiment Construction

[0027] Hereinafter, the invention will be described further in detail by reference to the drawings. FIG. 1 is a perspective view of a golf club head according to an embodiment of the invention, as viewed from the rear. FIG. 2 is a side view of the same as viewed from the toe side thereof.

[0028] An iron-type golf club head 1 has a face 2 which has a face surface 2f of a flat shape, and a hosel 3 which is continuous with the face 2 on its heel side. A shaft insertion hole 4 is disposed in the hosel 3. A tip of a golf club shaft is inserted into the shaft insertion hole 4, and fixedly attached thereto by means of an adhesive.

[0029] The golf club head 1 shown in the drawings is a wedge whose loft angle is 45°. On the backside of the golf club head 1, a protrusion 5 protruding rearward in the vicinity of the center in a toe-heel direction is disposed. The face 2 is substantially uniform in thickness, except for the protrusion 5.

[0030] Meanwhile, the face 2 has its greatest thickness a...

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PUM

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Abstract

An iron-type golf club head has a face having a face surface of a flat surface, and a hosel which is continuous with the face on its heel side. A shaft insertion hole is disposed in the hosel. A protrusion protruding rearward in the vicinity of the center in a toe-heel direction is disposed. A material of the golf club head is pure iron having a high purity of at least 99.995%, for instance, a purity within a range of 99.995 to 99.9999%. The golf club head is subjected to carburizing so that carbon diffuses to a range of about 0.2 to 0.5 mm from the surface.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a golf club head, particularly to a golf club head whose face is made of an iron material. More specifically, the invention relates to a golf club head for use in an iron-type golf club. [0003] 2. Description of the Related Art [0004] As a material for an iron-type golf club head, a soft iron, stainless steel, a cupper alloy, and the like, has been used. In addition, an iron golf club head of a composite type whose peripheral edge section is made of stainless steel, and to which a face plate made of a titanium alloy is attached has come into widespread use in recent years. Hereinbelow, an iron-type golf club head is often referred to as an “iron head.”[0005] An iron head made of pure iron whose purity falls within a range of 99.93 to 99.97% is disclosed in JP-A-63-229078. In lines 1 to 8, upper left column, page 3 of the specification, it is disclosed that pure iron has great elongat...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A63B53/04A63B102/32
CPCA63B53/047A63B2053/0462A63B2053/0454A63B2053/0416A63B53/0416A63B53/0454A63B53/0462A44B18/0023D04B21/04D04B21/20
Inventor NISHITANI, MASAFUMIYAMAGISHI, HISASHIKUBOTA, MAKOTOMOTOYOSHI, KOKI
Owner BRIDGESTONE SPORTS
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