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1. 发明授权

US3746207A Emergency telephone box 失效
标题翻译：紧急电话箱
公开(公告)号：US3746207A
公开(公告)日：1973-07-17
申请号：US3746207D
申请日：1971-06-14
申请人： GALE W D INC
发明人： LENHART R
IPC分类号： E05F1/10 , E05F11/00 , B65D43/16
CPC分类号： E05F1/1016 , E05F11/00 , E05Y2900/132 , Y10T16/44
摘要： An emergency telephone box comprising a box body mounted on a pole, a cover pivotally connected to the body of the box by hinge means, a coiled torsion door spring nonmovably secured at one end to the side of the box body and movably secured at the other end to the inside surface of the cover for resiliently holding the cover of the telephone box closed, and a handle secured to a cam member, which cam member is adapted to engage a projection provided within the box body on pivoting the handle to force open the cover under severe icing conditions.
摘要翻译：一种紧急电话箱，包括安装在杆上的箱体，通过铰链装置枢转地连接到箱体的盖子;一个螺旋扭转门弹簧，其一端可移动地固定在箱体的侧面并且可移动地固定在另一侧端部到盖的内表面，用于弹性地保持电话盒的盖被封闭，以及固定到凸轮构件的手柄，该凸轮构件适于在枢转手柄时与设置在箱体内的突起接合以迫使打开覆盖在严酷的结冰条件下。

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