| 摘要 |
A fastener includes a pad element having number of connecting prongs having two locking ridges disposed thereon. The top locking ridges, which are disposed closest to the tip of the prongs, are smaller than the lower locking ridges, thereby facilitating easy alignment of the unisex fasteners of a mating pad. Back prongs on the pad are used for connecting the pad to a surface of an article having holes for receiving the back prongs such that the connecting prongs are positioned to face upwardly from the surface. The fastener is adapted for use in yieldably or separably anchoring a baseball base in place on a playing field ground support attachment having like-constructed fastener prongs whereby injury to a runner sliding into the base will be minimized due to yielding under a relatively low force or separating under a relatively high force of the fastener prongs upon contact thereof.
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