Magnetic head for perpendicular magnetic recording with a coil including two coil portions
US9495980B1 · kind B1 · utility
3Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2015 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Oct 19, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3123
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head includes a coil, a main pole and a return path section. The return path section includes a yoke section, and a coupling section coupling the yoke section to the main pole. The coil includes a first coil portion surrounding at least part of an outer peripheral surface of the coupling section, and a second coil portion surrounding at least part of the entire perimeter of the main pole as viewed from the medium facing surface. The winding of the coil includes a common portion used in common to form part of the first coil portion and part of the second coil portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.