Method and an apparatus for manufacturing an electrical insulator
US6702975B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2000 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | May 24, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/3412
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a method for manufacturing an electrical insulator that includes a body (1) and a coating (5, 5a) of insulating material arranged on the body (1) where the coating is applied onto the body in a screw-like form or a helical-like form, whereby the coating is applied by extrusion directly on the body (1). In this way, the build-up trapped pockets of air between the applied coating and the body (1) is prevented, and good adhesion is achieved. The invention also concerns an apparatus for manufacturing an insulator as well as the use of the said method or apparatus for the manufacturing of a high voltage insulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.