发明名称 Base for baseball and softball
摘要 The invention relates to a baseball base which is yieldably attached to a ground support. The base is comprised of a hollow body of resilient material and having a frame therein. A support post of square cross-section is attached to the frame so that the can rotate about the longitudinal axis thereof. A hollow ground anchor of square cross-section is placed in the ground to receive the support post. At least one detent is placed between the frame and ground anchor, a spring is provided to bias the frame towards the ground anchor. The detent acting to hold the base relative to the ground anchor until acted upon by a player sliding into the base, thus causing the base to rotate about the longitudinal axis of the ground anchor.
申请公布号 US5080356(A) 申请公布日期 1992.01.14
申请号 US19910654950 申请日期 1991.02.13
申请人 GREEN, PAUL G.;GAYNE, GREGORY C. 发明人 GREEN, PAUL G.;GAYNE, GREGORY C.
分类号 A63B69/00 主分类号 A63B69/00
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