Apparatus for manufacturing electric wire having wire-enamel-type insulation
US4165957A · kind A · utility
20Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1977 |
| Grant date | Aug 28, 1979 |
| Priority date | — |
| Expiry date | Jun 29, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/039
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for manufacturing insulated electric wire of the enamelled-wire type wherein an insulating sheath adhering to the wire is formed by extrusion of selected thermoplastics which are heated to a temperature above their melting-point, then pressed onto the wire while in a fluid state. The extrusion apparatus includes a gauging die with a compressing cone having an aperture angle of from 2.degree. to 20.degree., preferably 7.degree..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.