发明名称 Signalling device with a sign having provision for spilling of wind and with a support
摘要 Signalling device comprising a sign and a support with the sign being formed of flexible material and having rigid extension arms which are yieldably urged into position for supporting the sign and which will bend with a predetermined wind load on the sign to facilitate spilling of the wind past the sign. Means is provided which will prevent bending of the sign beyond a predetermined amount when wind is being spilled by the sign. The support has an eccentrically mounted cam for retaining the support stand in an erected position. The stand also includes pin and slot means for preventing rotation of the telescoping parts of the stand. A bracket having swivel mounted jaws is provided for fastening the sign to the telescoping members.
申请公布号 US3899843(A) 申请公布日期 1975.08.19
申请号 US19690830908 申请日期 1969.05.08
申请人 WESTERN PROGRESS, INC. 发明人 DOYLE, ROBERT L.;SWEZY, MONTGOMERY C.
分类号 E01F9/012;G08B5/00;G09F7/18;(IPC1-7):G09F7/18 主分类号 E01F9/012
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