发明名称 Automatic door closer having an adjustable torsion spring and configured end fittings
摘要 Spring closing device for door or the like, comprising at least two hinges, each one comprising two components articulated on an axis and one of which, known as the mobile component, is fixed on the door and the other of which, known as the fixed component, is fixed on the post of this door, whereby a flexible spring torsion bar is also provided between this door and its post so as to bring it back automatically into the closed position, a device characterized in that the elastic component comprises a steel spring torsion bar (6) connecting the fixed component of a hinge to the mobile component of another hinge.
申请公布号 US4845811(A) 申请公布日期 1989.07.11
申请号 US19880149134 申请日期 1988.01.27
申请人 FARGNIER, JEAN A. 发明人 FARGNIER, JEAN A.
分类号 E05F1/12 主分类号 E05F1/12
代理机构 代理人
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