Surge absorber
US4727350A · kind A · utility
36Cited by
5References
6Claims
0Family size
Inventor
Key dates
| Filing date | Feb 20, 1987 |
| Grant date | Feb 23, 1988 |
| Priority date | — |
| Expiry date | Feb 20, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T4/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A surge absorber in which an electrically conductive thin film is vaporized on the surface of a ceramic circular cylinder, a micro.groove is trimmed using a laser beam to define a spiral locus on the surface, and a linear.groove is trimmed to intersect the micro.groove to divide the thin film into a plurality of segments, so that overvoltages applied across the two electrodes can be absorbed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.