Patent ID: 11857749
Assignee: FK IRONS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC A  H | IPC A  H

Claim 17:
18. The tattoo system according to claim 10, further comprising a power pack configured to be releasably coupled to the tattoo tool, wherein the power pack comprises:
a power pack housing that comprises a tool interface;
a plurality of grooves arranged on an outside surface of the power pack housing;
a rechargeable battery disposed within the power pack housing,
wherein the tool interface of the power pack defines a cylindrical feature that complements the cylindrical feature of the power interface of the tattoo tool, wherein when the power pack is coupled to the tattoo tool, the respective cylindrical features are configured to overlap one another to facilitate releasably securing the power pack to the tattoo tool and transferring energy stored in the rechargeable battery to the motor via the electrical terminals of the motor.