US Patent 7207242 Universal rotary device for marking an article with ink

A marking device with a reciprocating needle is disclosed. The needle is attached to a drive mechanism that is linearly reciprocated via a drive motor. The needle is contained within a removable grip tube for adjustability of the exposed length of the needle end, the needle further including a stabilization mechanism limiting the movements of the needle to linear reciprocating motion. The device includes an open design for easy removal and replacement of device components and allows for utilization of varying dimensioned components such as tubes, needles, and motors available from a variety of manufacturers.