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公开(公告)号：US4241638A
公开(公告)日：1980-12-30
申请号：US14919
申请日：1979-02-26
申请人： Mituo Shimizu , Hidenori Miyake
发明人： Mituo Shimizu , Hidenori Miyake
CPC分类号： F16B25/10 , F16B25/0031 , F16B25/0057 , F16B25/0068
摘要： A self-extruding fastener having a head provided with a cross groove, a stem having two screw threads and a tapering portion terminating at a sharp pointed forward end adapted to form a guide opening in a thin sheet of metal. A third screw thread generates in a position midway between said two screw threads and in a portion where the stem ends and the tapering portion begins, and extends to the pointed forward end, while the two screw threads disappear in the tapering portion. Therefore, the self-extruding fastener according to the invention comprises three sections, that is, two screw thread section, three screw thread section and one screw thread section.
摘要翻译： 一种自挤出紧固件，其具有设置有十字槽的头部，具有两个螺纹的杆，以及终止于尖锐的尖端的锥形部分，其适于在薄金属片中形成引导开口。 第三螺纹在所述两个螺纹之间的中间位置产生，并且在杆端部和锥形部分开始的部分中产生并延伸到尖的前端，同时两个螺纹消失在锥形部分中。 因此，根据本发明的自挤压紧固件包括三个部分，即两个螺纹部分，三个螺纹部分和一个螺纹部分。
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公开(公告)号：US4297835A
公开(公告)日：1981-11-03
申请号：US96685
申请日：1979-11-23
申请人： Mituo Shimizu
发明人： Mituo Shimizu
摘要： An integrated string consisting of plural mono-filaments, each of which being fused together with adjacent mono-filaments at the contact points and externally having sharp grooves produced by twisting along its length and internally defining confined spiral bores between the component mono-filaments along its length. The external spiral grooves produced by twisting provide frictional resistance against slipping without deteriorating the specific surface tenacity and the tensile strength of the component synthetic mono-filaments. The internal spiral bores between the component mono-filaments improve the flexibility of the string.
摘要翻译： 由多个单丝组成的整体串，每个单丝在接触点处与相邻的单丝熔合在一起，并且外部具有沿着其长度扭转而产生的尖锐的凹槽，并且沿其长度在内部限定部件单丝之间的限制螺旋孔 长度。 通过扭转产生的外部螺旋槽提供摩擦阻力以防滑脱，而不会降低组分合成单丝的比表面强度和拉伸强度。 组件单丝之间的内螺旋孔改善了绳的柔性。
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公开(公告)号：US4329099A
公开(公告)日：1982-05-11
申请号：US113049
申请日：1980-01-17
申请人： Mituo Shimizu , Hidenori Miyake
发明人： Mituo Shimizu , Hidenori Miyake
CPC分类号： F16B25/10 , F16B25/0031 , F16B25/0057 , F16B25/0068
摘要： A self-drilling and self-extruding fastener having a constant cross section stem and a tapering end portion terminating in a sharp point. The stem is provided with a pair of screw threads of like configuration. The tapering portion is provided with a third thread which begins at the pointed forward end in a very steep lead angle which functions as a drilling portion and thereafter the lead angle decreases so that the third thread may function to extrude the metal surrounding a guide opening formed by the drilling portion. Depending upon the screw thread configurations, one or both of the screw threads cooperate with the third thread to further extrude sheetmetal surrounding the guide opening into a cylindrical bore, after which the screw threads self-tap into the wall of the cylindrical bore of the projection and thereby firmly grip the sheetmetal.
摘要翻译： 自钻和自挤压紧固件具有恒定的横截面杆和终止于尖锐点的锥形端部。 杆设置有一对类似构造的螺纹。 锥形部分设置有第三螺纹，其以尖锐的前端以非常陡的引导角开始，其作为钻孔部分，此后引导角度减小，使得第三螺纹可用于挤压形成的引导开口周围的金属 通过钻孔部分。 根据螺纹构造，一个或两个螺纹螺纹与第三螺纹配合，以进一步将围绕引导孔的金属板拉伸成圆柱形孔，之后螺纹自身进入突出部的圆柱孔的壁 从而牢固地夹紧钣金。
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