Miniature generator
US6349683B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2000 |
| Grant date | Feb 26, 2002 |
| Priority date | — |
| Expiry date | Sep 18, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/1884
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A miniature, two cycle engine with a linear electrical generator is presented. The piston attaches to the spring and a moving coil is also attached to the spring and/or rod assembly distal from the cylinder head. The spring is formed with an integral end fitting from one piece of preferably titanium stock. A permanent magnet is arranged where the coil moves within the magnet air gap to produce electrical power. The system operates at the resonant frequency of the spring and active mass. A glow plug provides the ignition source and hydrocarbon fuel is used. The package is about an inch wide and about 2-3 inches long, and it weighs about 30 grams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.