Abstract: Systems and methods for joining together two or more in-line components such as rail (e.g. staircase rail) components or like structures are disclosed herein. The system includes two or more components, each having at least one spring-bolt attached thereto and received in a respective cavity of the components. The components are coupled to one another by interlocking of the spring bolts caused by relative rotation of the spring-bolts, and the components include inner and outer perimeters sized to form a substantially flush connection with no external signs of the coupling mechanism when the components are so coupled.

Abstract: Systems and methods for joining together two or more in-line components such as rail (e.g. staircase rail) components or like structures are disclosed herein. The system includes two or more components, each having at least one spring-bolt attached thereto and received in a respective cavity of the components. The components are coupled to one another by interlocking of the spring bolts caused by relative rotation of the spring-bolts, and the components include inner and outer perimeters sized to form a substantially flush connection with no external signs of the coupling mechanism when the components are so coupled.

Abstract: A plurality of similarly configured coupling component assemblies is provided. Each assembly includes a first coil spring and a second coil spring. Each coil spring is positioned in a hole. Each coil spring has an interior end of a reduced diameter with a fastener attaching the spring to the hole. Each coil spring has an exterior end extending a short distance outside of the hole. The exterior ends of adjacent opposing coil springs are adapted to interlock and join associated components of the system when rotated with respect to each other about a common axis of rotation. The coupling components also include a cylindrical rod with opposed ends within the opposing coil springs. Each rod has an axial length greater than the length of each coil spring and less than the axial length of two holes.

Abstract: A plurality of similarly configured coupling component assemblies is provided. Each assembly includes a first coil spring and a second coil spring. Each coil spring is positioned in a hole. Each coil spring has an interior end of a reduced diameter with a fastener attaching the spring to the hole. Each coil spring has an exterior end extending a short distance outside of the hole. The exterior ends of adjacent opposing coil springs are adapted to interlock and join associated components of the system when rotated with respect to each other about a common axis of rotation. The coupling components also include a cylindrical rod with opposed ends within the opposing coil springs. Each rod has an axial length greater than the length of each coil spring and less than the axial length of two holes.