发明名称 Vertical mast support forming device, has support structure connected to lower part of support by spring that exerts tractive effort on support to bring back its vertical position, during tilting of support towards its horizontal position
摘要 <p>The device (1) has a support structure (4) connected to a lower part (2c) of a vertical mast support (2) by a helical spring housed in a hollow column (6) of the support structure. The spring exerts tractive effort on the support to bring back its vertical position, during the tilting of the support towards its horizontal position at which the weight of the support is balanced with the retaining strength exerted by the spring. The lower part of the support is articulated to the upper part of the column.</p>
申请公布号 FR2912451(A1) 申请公布日期 2008.08.15
申请号 FR20070053253 申请日期 2007.02.14
申请人 ETS FRENEHARD ET MICHAUX SOCIETE ANONYME 发明人 THIEBAUT LAURENT
分类号 E04H12/34 主分类号 E04H12/34
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