Patent ID: 7828609

Claim:
A line spring jack comprising: a jack body having an open end and a closed end and a plug hole therein between the open end and the closed end, said plug hole further including a groove near the closed end of said jack body, wherein the diameter of the groove is smaller than the diameter of the rest of said plug hole; a jack cap connected to the open end of the jack body, said jack cap further including a through hole via which said plug hole is exposed externally; one or more line spring wires within the plug hole; and a positioning plug within the plug hole, said positioning plug further including a first portion within the groove and a second portion within the rest of said plug hole, wherein the first portion within the groove is configured to tightly fit said groove; wherein: a first end of at least one of said one or more line spring wires is located within a space defined between an interior surface of said jack cap and an exterior surface of said jack body; and a second end of the at least one line spring wire is located within a space defined between an exterior surface of the second portion of the plug hole and an interior surface of the jack body.