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公开(公告)号:US3882905A
公开(公告)日:1975-05-13
申请号:US49242474
申请日:1974-07-29
发明人: JAMES KENNETH E
CPC分类号: B21F27/124 , B21F27/121 , E04C5/0618 , F16L9/08
摘要: Reinforcing cage for the wall of a concrete pipe characterized by a pair of helical spaced coils, indexed 180* apart, and longitudinal members woven over and under adjacent coils and mechanically locked thereto, said members being disposed angularly to the planes of the ends of the cage, forming isosceles triangles for resisting torsion in both directions about the cage axis, together with method of making the cage. Various additional optional features may be employed.
摘要翻译: 用于混凝土管壁的加强笼,其特征在于一对螺旋间隔的线圈分开180°,并在相邻线圈之上和之下编织并机械地锁定在其上的纵向构件,所述构件成角度地设置在 保持架,形成用于抵抗围绕保持架轴线的两个方向的扭转的等腰三角形,以及制造保持架的方法。 可以采用各种附加的可选特征。