Breakerless ignition system
US4270509A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 1980 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | Jan 25, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P7/0675
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Conventional breaker points in an engine ignition system are replaced by switching means comprising a transistor device and a biasing coil that is coupled with a core and cooperates with a magnet assembly rotating in timed relation to the engine cycle. The magnet assembly has poles with substantial extension in the orbital direction, spaced a small distance apart. The core has one pole face with substantial extension in the orbital direction and another spaced therefrom by a small distance in said direction and substantially narrower. As applied to a flywheel magneto system, the biasing coil is wound on a straight core element mounted adjacent to the armature core leg first approached by the magnet assembly, at the departure side of that core leg.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.