Method for manufacturing over-current protection device
US7892392B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2008 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Sep 24, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1062
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for manufacturing an over-current protection device comprises a step of providing at least one current sensitive device and a step of pressing. The current sensitive device comprises a first electrode foil, a second electrode foil and a PTC conductive layer physically laminated between the first and second electrode foils. The pressing step is to press the current sensitive device at a predetermined temperature, thereby generating at least one overflow portion at sides of the PTC conductive layer to form the over-current protection device. The predetermined temperature is higher than the softening temperature of the PTC conductive layer. The over-current protection devices manufactured according to the present invention have superior resistance distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.