Bobbins for electrical coils and method of manufacturing electrical coils therefrom
US4701735A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1986 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | Dec 11, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2005/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A symmetrical bobbin especially adapted for the automatic manufacture of electrical coils. The bobbin, formed of high-strength plastic material, comprises first and second lips formed at terminal ends thereof and first and second flanges spaced inwardly from the lips. The bobbin surface between the flanges defines a main coil winding space and the bobbin surfaces between the lips and corresponding flanges define first and second terminal winding spaces. Immersion soldered terminal connections, of high physical strength, durability and electrical conductivity, are formed by extensibly wrapping electrical wire from the main coil about the terminal winding spaces and subsequently immersing the wire-wound terminal winding spaces in molten solder to provide a circumferential bond of unitary structure for terminal connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.