发明名称 Powerlift competition safety device
摘要 A weightlifting apparatus operable to support a barbell comprising a pair of spaced-apart, substantially parallel vertical support members, each having an upper end and a lower end. A base supports the support members. Each support member bears synchronously and selectively movable, horizontally projecting spotting arms which are disposed in substantially the same horizontal plane. These support members are adapted to receive the barbell. Each spotting arm is coupled with a rod and cylinder assembly and each assembly is fluid actuable for synchronous movement of said spotting arms. An actuator or switch is provided for actuating said assemblies.
申请公布号 US4799672(A) 申请公布日期 1989.01.24
申请号 US19880140622 申请日期 1988.01.04
申请人 BARRETT, WILLIAM L. 发明人 BARRETT, WILLIAM L.
分类号 A63B21/078;(IPC1-7):A63B13/00 主分类号 A63B21/078
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