Solenoid coil including bobbin with moisture barrier
US10591081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2016 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Aug 25, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F5/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solenoid coil includes a coil winding that generates an electromagnetic force when a current is supplied to the coil winding. The solenoid coil also includes an electrically insulative bobbin made of an insulating material having a melting point. The bobbin includes a spool for supporting the coil winding. The spool includes a first end and a second end opposite the first end. The coil winding is positioned between the first end and the second end. The bobbin also includes a flange connected to one of the first end and the second end. A continuous ridge extends from the flange between an outer edge and studs to form a moisture barrier. The solenoid coil further includes an overmold enclosing at least a portion of the bobbin and the coil winding. The overmold bonds to the continuous ridge when the solenoid coil is heated to a temperature above the melting point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.