Split spline screw

Details Split spline screw Split spline screw

1992-07-27

1993-11-16

Reese, Randolph A.

Joints and connections

Interfitted members

Lugged member, rotary engagement

403359, 901 30, F16B 300, B25J 1100

Patent

active

052617580

ABSTRACT:
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.

REFERENCES:
patent: 531334 (1894-12-01), Ross
patent: 4538967 (1985-09-01), Furukawa
patent: 4635328 (1987-01-01), Palmer
patent: 4710093 (1987-12-01), Zimmer et al.
patent: 4756638 (1988-07-01), Neyret
patent: 4875275 (1989-10-01), Hutchinson et al.
patent: 5018266 (1991-05-01), Hutchinson et al.
patent: 5174772 (1992-12-01), Vranish

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