| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of putting by paying attention to the sound of hitting a ball since a sound from the ear close to the brain tends to remain in memory, so that if good sound corresponding to a ball hit by the core can be made out, the problem can be solved although importance of sure hitting in golf putting using the core of a putter face is difficult to be ascertained because the discrimination is likely to be unconstant with heat and cold of a season and condition of turf.SOLUTION: The sound of timpani capable of good tune adjustment and reverberations of a dome ceiling of a chapel are exactly the sound memorable by the ears of the senses. Accordingly, a cylindrical cavity is made inside a putter head, making the rear bottom part a hemispherical round shape or an elliptical circular form, with a small hole prepared in the rear bottom face. Consequently, a good sound can be discriminated which makes the hitting with the core ascertainable.SELECTED DRAWING: Figure 1 |
