发明名称 Spring diving board safety apparatus
摘要 A diving board safety apparatus is set forth wherein a "spring type" diving board is provided with a double acting air cylinder actuated by a manually actuatable valve to direct a solenoid valve to selectively extend or retract a telescoping section of the diving board.
申请公布号 US4998718(A) 申请公布日期 1991.03.12
申请号 US19890439159 申请日期 1989.11.20
申请人 ARENS, JACOB 发明人 ARENS, JACOB
分类号 A63B5/10 主分类号 A63B5/10
代理机构 代理人
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