US Patent 9458872 Connector devices

A variety of connectors can be used to connect cylindrical or other shaped tubes to one another. The connectors incorporate features that may facilitate connecting the tubes at a wide range of angles to form a variety of multi-dimensional shapes, while obviating the need to use tape or glue. Such features can potentially improve the aesthetics and simplify the assembly of objects produced using the connectors. Further, structures produced using the connectors can be disassembled, facilitating reuse of, for example, the paper-based tubes of exhausted household products.