| 摘要 |
1470768 Golf clubs J HOLDER 4 July 1974 [25 April 1973] 19705/73 Heading A6D Cavities 15 in each of oppositely opposed end faces 16 of a golf club head, are provided with internal projections e.g. ribs screw-threads providing retaining means for releasable engagement with a closure element 14. Closure element 14 may take the form of one or more grub screws, or weighted plugs allowing for weight variation-to which end a plurality of additional weights e.g. ball bearings may be removably retained in the cavities by the closure members. |
