公开(公告)号：US06334817B1

公开(公告)日：2002-01-01

申请号：US09474400

申请日：1999-12-29

申请人： Hiroyuki Ezawa ,  Toshiki Oonaka ,  Sadayoshi Furusawa ,  Shingo Nomura ,  Takashi Iihara

发明人： Hiroyuki Ezawa ,  Toshiki Oonaka ,  Sadayoshi Furusawa ,  Shingo Nomura ,  Takashi Iihara

IPC分类号： A63B5304

CPC分类号： A63B53/0466 ,  A63B2053/0408 ,  A63B2053/0412 ,  A63B2053/0416 ,  A63B2053/0433 ,  A63B2209/00

摘要： A hollow golf club head made of a metallic material. The golf club head has a three piece structure of a main head body, face and crown. The main head body and the crown are formed by casting or press-forming, the face is formed by press-forming, and these are joined together by welding. The metallic material used is selected from a steel material group of martensite deposition hardening-type stainless steel, maraging steel, and maraging stainless steel. Only a material having a specific gravity of 7.07 or higher is used, and the head body has a volume of 280-320 cc and a weight of 180-205 g. The golf club head enables increasing the meet rate, has design freedom, exhibits excellent processability, and can be manufactured at a low cost.

摘要翻译： 由金属材料制成的中空高尔夫球杆头。 高尔夫球杆头具有主体主体，表面和表冠的三件式结构。 主头主体和表冠通过铸造或压制成型形成，通过压制成形形成表面，并且通过焊接将它们接合在一起。 所使用的金属材料选自马氏体沉积硬化型不锈钢，马氏体时效钢和马氏体时效不锈钢的钢材组。 仅使用比重为7.07以上的材料，头体的体积为280〜320cc，重量为180〜205g。 高尔夫球杆头可以提高满足率，具有设计自由度，显示出优异的加工性，并且可以以低成本制造。

公开(公告)号：US06168537A

公开(公告)日：2001-01-02

申请号：US09246728

申请日：1999-02-09

申请人： Hiroyuki Ezawa

发明人： Hiroyuki Ezawa

IPC分类号： A63B5304

CPC分类号： A63B53/04 ,  A63B53/0466 ,  A63B53/0487 ,  A63B60/00 ,  A63B2053/0416

摘要： A golf club head 10 includes a crown portion 11, a face portion 12, a side portion 13 a back face portion 14, and a neck portion 15. The crown portion 11 has a protruded portion in which a maximum point P of a curved contour of a central cross section (X—X line) of the crown portion is positioned rearwardly of the center I of the golf club head, and a cut-away portion obtained by obliquely cutting off the rear peripheral portion thereof. A volume V2 of a back-face-portion-side portion of the golf club head, which is positioned rearwardly of the head center I, is greater than a volume V2 of a face-portion-side portion of the golf club head, which is positioned in front of the head center I. On the curved contour of a central cross section of the crown portion 11, a relationship AB

摘要翻译： 高尔夫球杆头10包括冠部11，面部12，侧部13，后表面部14和颈部15.冠部11具有突出部，其中弯曲轮廓的最大点P 冠部的中心横截面（XX线）位于高尔夫球杆头的中心I的后方，并且通过倾斜地切断其后周边部分而获得的切除部分。 位于头部中心I后方的高尔夫球杆头的后表面部分侧部分的体积V2大于高尔夫球杆头部的面部侧部分的体积V2， 位于头部中心I的前方。在冠部11的中心横截面的弯曲轮廓上，形成关系AB