公开(公告)号：US4953835A

公开(公告)日：1990-09-04

申请号：US378678

申请日：1989-07-12

申请人： Yukio Matsumoto ,  Horiyuki Saito ,  Kuniki Morita

发明人： Yukio Matsumoto ,  Horiyuki Saito ,  Kuniki Morita

IPC分类号： F16F1/06 ,  F16F1/04

CPC分类号： F16F1/042

摘要： Wire of an oval type cross sectional shape having a surface formed of a semicircle and semiellipse tangent to each other has been used for coiled springs. Stress distribution in wire of such a shape can be improved by increasing the dimension of the spring wire in a direction perpendicular to the axis of the spring. One such cross sectional shape is formed by semicircle and semiellipse portions connected by straight lines.