Dual coil electromagnet using rectilinear cross-section core elements with enlarged heads in a tattoo apparatus
US6774754B2 · kind B2 · utility
2Cited by
6References
12Claims
0Family size
Inventor
Key dates
| Filing date | Dec 3, 2001 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Dec 3, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/1638
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electromagnetic coils having rectilinear cross-section core elements with an enlarged head end adjacent to a moving armature bar having a rectilinear cross-section are described in a handheld tattoo apparatus. This results in increased vibrational smoothness as sensed by the tattoo artist.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.