发明名称 Automatic parking lot gate with four-way flex connector
摘要 A parking lot gate is provided with a flexible connector between the elongated gate arm and the arm drive mechanism to prevent breakage of the gate arm or the arm drive mechanism. The flexible connector includes a first connection plate connected to the arm drive mechanism, a second connection plate connected to the gate arm, and first and second coil springs connected between the first and second connection plates. The first and second coil springs are positioned essentially parallel to one another and in an essentially vertical plane.
申请公布号 US4227344(A) 申请公布日期 1980.10.14
申请号 US19790012330 申请日期 1979.02.15
申请人 POPPKE, DAVID 发明人 POPPKE, DAVID
分类号 E01F13/06;(IPC1-7):E01F13/00 主分类号 E01F13/06
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