发明授权
- 专利标题: Split spline screw
- 专利标题(中): 分割花键螺丝
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申请号: US918747申请日: 1992-07-27
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公开(公告)号: US5261758A公开(公告)日: 1993-11-16
- 发明人: John M. Vranish
- 申请人: John M. Vranish
- 申请人地址: DC Washington
- 专利权人: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- 当前专利权人: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- 当前专利权人地址: DC Washington
- 主分类号: B23B31/113
- IPC分类号: B23B31/113 ; B23Q1/00 ; B25J15/04 ; F16B21/04 ; F16B3/00 ; B25J11/00
摘要:
A split spline screw type payload fastener assembly including three identical male and female type split spline sections. The male spline sections are formed on the head of a male type spline driver. Each of the split male type spline sections have an outwardly projecting load baring segment including a convex upper surface which is adapted to engage a complementary concave surface of a female spline receptor in the form of a hollow bolt head. Additionally, the male spline section also includes a horizontal spline releasing segment and a spline tightening segment below each load bearing segment. The spline tightening segment consists of a vertical web of constant thickness, having at least one flat vertical wall surface which is designed to contact a generally flat vertically extending wall surface tab of the bolt head. Mutual interlocking and unlocking of the male and female splines result upon clockwise and counter clockwise turning of the driver element.
公开/授权文献
- US5767465A Pedestrian crosswalk switch 公开/授权日:1998-06-16