发明名称 Tennis serve training and practice device
摘要 An adjustable target for practicing tennis serves on a regulation size tennis court comprises a substantially rectangular frame defining an enclosure through which the tennis balls may pass. The frame includes two mutually slidable U-shaped side members. The upper leg of each side member is slidable in an upper telescoping member and the lower leg of each side member is slidable in a lower telescoping member having a downwardly extending adjustable leg and telescoped within a main upright support telescoped over an upwardly extending arm of a base. A brace extends rearwardly from the top of the frame and is adjustable therewith in a lateral direction for advantageously cooperating in releasably attaching a removable net for receiving, catching and holding the served tennis balls penetrating the opening defined by the frame.
申请公布号 US4160549(A) 申请公布日期 1979.07.10
申请号 US19780871082 申请日期 1978.01.19
申请人 SIMPSON, JOHN P. 发明人 SIMPSON, JOHN P.
分类号 A63B61/00;A63B63/00;(IPC1-7):A63B69/38 主分类号 A63B61/00
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