Apparatus and method utilizing magnetic field
US7952349B2 · kind B2 · utility
87Cited by
15References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 11, 2007 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Feb 10, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3785
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus and method for harvesting energy from the environment and/or other external sources and converting it to useful electrical energy. The harvester does not contain a permanent magnet or other local field source but instead relies on the earth's magnetic field of another source of a magnetic field that is external to the sensing device. One advantage of these new harvesters is that they can be made smaller and lighter than energy harvesters that contain a magnet and/or an inertial mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.