发明授权
- 专利标题： Banner arm break-away device
- 专利标题（中）： 横幅手臂拆除装置
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申请号： US922206申请日： 1986-10-23
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公开(公告)号： US4720204A公开(公告)日： 1988-01-19
- 发明人: Dale L. Johnson
- 申请人： Dale L. Johnson
- 申请人地址： MN Winsted
- 专利权人： Sterner Lighting Systems Incorporated
- 当前专利权人： Sterner Lighting Systems Incorporated
- 当前专利权人地址： MN Winsted
- 主分类号： E04H12/32
- IPC分类号： E04H12/32 ; G09F17/00 ; F16D1/00
摘要：
A banner support arm safety coupling rigidly mounts banner support arms to a pole and has a frangible or breakable portion so the coupling will break under loads on the banner before the pole fails. A safety line holds the coupling portion from completely separating after the frangible portion breaks.