Title:
METALLIC HOLLOW GOLF CLUB
Document Type and Number:
Japanese Patent JP2017170199
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To realize an adjustment to an appropriate hitting angle according to hitting head speed which varies according to golfers.SOLUTION: A diameter D2 of an inner peripheral hole 81 of a spacer 8 and a diameter D3 of an inner peripheral hole 92 of a cap 9 are formed larger than a diameter D1 of an inner peripheral hole 72 of a sleeve 7. With respect to a tip of a golf shaft 6, a portion of overall length S in an axial direction of the inner peripheral hole 72 of the sleeve 7 is fixed (bonded) but not fixed (bonded) in the inner peripheral hole 81 of the spacer 8 and the inner peripheral hole 92 of the cap 9. A portion beyond an upper end of the fixation part (an upper end surface of the sleeve 7) 73 of the tip of the golf shaft 6 is non-binding in an insertion hole of a hosel part 3. The overall length S in the axial direction of the inner peripheral hole 72 of the sleeve 7 is set at the length capable of securing bonding strength between the golf shaft 6 and the sleeve 7 enough to tolerate hitting power.SELECTED DRAWING: Figure 1
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Inventors:
OCHIAI KENJI
Application Number:
JP2017115922A
Publication Date:
September 28, 2017
Filing Date:
June 13, 2017
Export Citation:
Assignee:
ENDO SEISAKUSHO KK
International Classes:
A63B53/02; A63B53/04
Domestic Patent References:
| JP2000202072A | 2000-07-25 | |||
| JP2011030759A | 2011-02-17 | |||
| JP2008029691A | 2008-02-14 | |||
| JPH05261167A | 1993-10-12 |
Foreign References:
| US9119998B1 | 2015-09-01 |
Attorney, Agent or Firm:
Motonari Tomisaki
Tomisaki you
Machida Mitsunobu
Tomisaki you
Machida Mitsunobu