Mizuno USA, Inc.

Mizuno Corporation

Chuo Industries, Ltd.

Kazuhiro Doi

David Gregory Llewellyn

Tsugunobu Sakamoto

Chris Voshall

Tetsuya Kanayama

Jun Yoshikawa

Mamoru Saraie

Isamu Toshinari

Tomoaki Aoki

Kensuke Maenaka

Kei Tsuji

Kazuhiko Natori

Arata Kamo

Yasuyuki Ohta

Noriyuki Tabuchi

Daisuke Hosooka

Yukihiro Teranishi

Naoya Joichi

An object is to provide an iron golf club head that has high drainage performance and facilitates application of backspin also in a wet state. In an iron golf club head including a plurality of scorelines in a face surface, a microgroove including at least an inclined groove is included between the scorelines, the microgroove extending in a heel leading edge-toe top edge direction to be connected to an upper scoreline.

Iron golf club head

Provided is a method for manufacturing an iron golf club head by forging a single round rod member with a pair of dies to form, as a single piece, a body and a neck into which a shaft is to be inserted. The method includes: a first step of heating the single round rod member into a heated material; a second step of placing the heated material in the pair of dies; and a third step of forging the heated material placed in the pair of dies. In the third step, the heated material is prevented from flowing out from parting surfaces of the respective dies at a sole side of the body in the pair of dies, and the heated material blocked at the sole side in the pair of dies flows toward each of a toe of the body and the neck in the pair of dies.

Method for manufacturing iron golf club head, iron golf club head, and iron golf club

An iron golf club head includes: a face portion including a ball striking surface and a first reverse surface; and a sole back portion including a second reverse surface connected with the first reverse surface and located below the first reverse surface. The iron golf club head has a first hollow separated from outside by the face portion and the sole back portion. The ratio W/Vof the weight W (unit: g) of the iron golf club head relative to the volume V(unit: mm) of the iron golf club head is 6.5&#xd7;10or less. The sole maximum projected width Sw of the iron golf club head is 25 mm or more. The sweet spot height Sh of the iron golf club head is 20 mm or more.

Iron golf club head and iron golf club

Provided are a golf club head and a golf club with a plate member that is resistant to peeling and has a glossy appearance. A golf club head includes a face portion including a ball striking surface, and a plate member connected to a back surface located on the back side of the face portion. The plate member includes a resin and a metal material. The metal material is arranged on at least any one of a toe side and a heel side of the face portion and is arranged so as not to planarly overlap a striking point of the face portion.

Golf club head and golf club

A golf club head according to an embodiment includes a face having a ball striking surface and a back surface. The back surface of the face has a thick portion located at a generally center portion thereof in a direction from the toe toward the heel, a thin portion located around the thick portion, and a tapered portion located between the thick portion and the thin portion. The thick portion has a first width which is a width in a heel-toe direction, and a second width which is a width in a sole-top direction and is larger than the first width, and the thick portion also has a first thickness. The thin portion has a second thickness smaller than the first thickness. The tapered portion has a thickness reduced from the side of the thick portion toward the side of the thin portion.

In an iron golf club head with a face portion and a neck portion integrally molded by forging, the iron golf club head is made of an iron steel material at least containing 0.30% by weight or less of carbon and 0.0005% by weight to 0.003% by weight of boron. The face portion has been subjected to quenching processing.

Iron-type golf club head

An iron golf club head includes: a head portion; and a badge portion adhered to the head portion. The head portion includes: a face surface; and a back surface located behind the face surface. The badge portion is adhered to at least one of a first largest amplitude region where an amplitude in a fourth-order vibration mode of the back surface is the largest and a second largest amplitude region where an amplitude in a fifth-order vibration mode of the back surface is the largest. As a result, there can be obtained an iron golf club head and an iron golf club, in which by suppressing decrease in resonant time of the hitting sound and reducing the sound pressure of the hitting sound, the hitting sound and the hitting feeling can be improved.

Growing community of inventors

Osaka, Japan

Kazuhiro Doi