US 12,337,131 B2
Variable frequency waveform tattoo needle mechanism
Carson F Hill, Thousand Oaks, CA (US)
Filed by Carson F Hill, Thousand Oaks, CA (US)
Filed on Jul. 2, 2024, as Appl. No. 18/761,645.
Application 18/761,645 is a continuation of application No. 17/283,198, granted, now 12,023,461, previously published as PCT/US2020/063828, filed on Dec. 8, 2020.
Claims priority of provisional application 63/122,361, filed on Dec. 7, 2020.
Claims priority of provisional application 62/945,625, filed on Dec. 9, 2019.
Prior Publication US 2025/0032765 A1, Jan. 30, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 37/00 (2006.01)
CPC A61M 37/0076 (2013.01) [A61M 2205/103 (2013.01); A61M 2205/586 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A rotary tattoo machine or device, comprising:
a tattoo needle;
an electric motor including a shaft assembly, the shaft assembly configured to rotate when the electric motor is activated;
a bearing arm including a bearing, the bearing arm fit onto the shaft assembly; and
a cam, the cam including a plurality of slots around a circumferential edge of the cam, a ramp assembly and a protrusion on an opposite side of the cam with respect to the ramp assembly, the cam configured to move up and down the shaft assembly due to the rotation of the shaft assembly and the bearing arm and a driving of the bearing, the moving of the cam configured to drive the tattoo needle from a retracted position to an extended position.