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Inventor: Kusumoto; Harunobu
Address: Saitama, JP
No. of patents: 8
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7025117 |
Golf club head |
April 11, 2006 |
| A golf club head of the present invention. A cast head body 31 is constituted by a hollow outer shell. Said hollow outer shell define a top portion 35, a sole portion 37, a heel wall 45, a toe portion 39 and a face opening portion 33. A shaft securing portion 43 is formed adjacent to |
| 6926616 |
Golf club head |
August 9, 2005 |
| A golf club head of the present invention. A cast head body 31 is constituted by a hollow outer shell. Said hollow outer shell define a top portion 35, a sole portion 37, a heel wall 45, a toe portion 39 and a face opening portion 33. A shaft securing portion 43 is formed adjacent to the |
| 6524195 |
Tubular body |
February 25, 2003 |
| A tubular body comprises: rolled layers of prepreg formed of reinforcing fibers impregnated with synthetic resin, wherein a ratio of impregnation of synthetic resin contained in a skew fiber body layer on which fibers are arranged in a skew direction and also a ratio of impregnation of |
| 6322458 |
Golf club shaft |
November 27, 2001 |
| A golf club shaft is constructed by a pipe-shaped body in which a sheet of reinforced fiber prepreg impregnated with synthetic resin is rolled. The golf club shaft includes: a front end portion to which a club head is attached; and a grip portion arranged on the opposite side to the fron |
| 6306047 |
Golf club shaft |
October 23, 2001 |
| A golf club includes a shaft having prepreg sheets wound thereon, each of the prepreg sheets being formed by orienting reinforcing fibers in one direction and then by impregnating the fibers with a synthetic resin. The shaft includes an oblique fiber layer formed by winding the prepreg s |
| 6106413 |
Tubular body |
August 22, 2000 |
| A tubular body comprises: rolled layers of prepreg formed of reinforcing fibers impregnated with synthetic resin, wherein a ratio of impregnation of synthetic resin contained in a skew fiber body layer on which fibers are arranged in a skew direction and also a ratio of impregnation of |
| 6056648 |
Golf club shaft |
May 2, 2000 |
| The present invention relates to a golf club shaft which is easy to be gripped, and superior in strength and balance in its shaft portion. A golf club shaft is constituted by fiber-reinforced prepreg formed from reinforcing fibers impregnated with synthetic resin. A small-diameter po |
| 5947839 |
Golf club shaft |
September 7, 1999 |
| A golf club shaft which can enhance the directivity of a golf ball. In the golf club shaft, the kick point and the position at which the torsional rigidity in the circumferential direction is lowest are set at a position distant from the front end portion of the shaft by 30 to 50% with r |
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