发明授权
US07517286B2 Trial golf club for measuring loft angle and methods for using the same
失效
用于测量顶角的试验高尔夫球杆及其使用方法
- 专利标题: Trial golf club for measuring loft angle and methods for using the same
- 专利标题(中): 用于测量顶角的试验高尔夫球杆及其使用方法
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申请号: US11539307申请日: 2006-10-06
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公开(公告)号: US07517286B2公开(公告)日: 2009-04-14
- 发明人: Masao Nagai , Chris Voshall , Bill Price , David Llewellyn , Richard Delvac
- 申请人: Masao Nagai , Chris Voshall , Bill Price , David Llewellyn , Richard Delvac
- 申请人地址: US GA Norcross
- 专利权人: Mizuno USA
- 当前专利权人: Mizuno USA
- 当前专利权人地址: US GA Norcross
- 代理机构: Troutman Sanders LLP
- 代理商 James E. Schutz; Filip A. Kowalewski
- 主分类号: A63B53/06
- IPC分类号: A63B53/06
摘要:
The invention is directed toward a trial golf club head and method for determining the optimal loft angle for any golf club, and in particular a hybrid-type golf club. The invention includes a trial golf club head having a face portion, a leading edge portion, a toe portion, a heel portion, a back portion having a trailing edge portion, and a sole portion. The sole portion contains a number of equally spaced graduated indicia, which are substantially parallel to one another and extend from the toe portion to the heel portion. The distance between the graduated indicia is approximately 3.75 centimeters (cm), which corresponds to an incremental loft angle of approximately 3 degrees. The sole portion has a radius of curvature of 71.67 mm, which extends from the leading edge of the face portion to the trailing edge of the back portion.