Outdoor electrical apparatus having an outer housing arranged to selectively encase a main encapsulant
US10959344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2018 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Jul 6, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/327
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An outdoor electrical apparatus (10) and methodology for manufacturing such apparatus are provided. The apparatus includes an electrical device (12), and an encapsulation housing system including a main encapsulant (11a) and an outer housing (11b). The main encapsulant may be arranged to encapsulate the electrical device, and the outer housing may be arranged to selectively encase surfaces of the main encapsulant based on an extent to which the surfaces of the main encapsulant otherwise would be subject to outdoor exposure. The main encapsulant comprises a bisphenol epoxy resin, and the outer housing comprises a cycloaliphatic epoxy resin to provide weatherability and resistance to ultraviolet (UV) radiation. This approach of selectively encasing surfaces of the main encapsulant with the outer housing, based on a relatively lower cost epoxy resin, is effective to balance competing demands, such as reducing a total monetary cost of the encapsulation housing system while meeting requisites regarding weatherability and UV radiation resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.