Electrical resistor package which remains unaffected by ambient stresses and humidity
US4152689A · kind A · utility
10Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1978 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Feb 13, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C1/028
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present electrical resistor package has a naked electrical resistor element which is designed to provide quantitative resistance to electrical current flow, said element is initially encapsulated in a flexible coating, such as silicone wax, which absorbs stresses and is secondarily encapsulated around said flexible coating, in a cushion type moisture barrier coating, such as silicone rubber, to keep moisture away from said element and finally is encapsulated around said moisture barrier coating by a hard protective coating, such as epoxy, to protect the nak ed element from physical and environmental damage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.