Electric motor manufacture
US4350914A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1980 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | Jun 13, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K15/095
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention provides a new method of making electric motor stator assemblies of the type comprising a magnetic stator body with a plurality of discrete poles and a coil wound on each pole. Preferably each stator assembly is made by (a) providing a flexible chain of hollow bobbins with terminal pins for each bobbin; (b) inserting a magnetic pole piece in each bobbin in turn; (c) winding a coil on each bobbin and attaching the ends of each coil to the terminal pins of the bobbin on which the coil is wound; and (d) inserting at least a portion of the bobbin chain in a casing which engages and provides a low reluctance magnetic connection between the several pole pieces, whereby a stator assembly is formed which is characterized by (1) a stator in which the casing acts as the stator body and the pole pieces act as individual stator poles, and (2) individual coils each associated with one of the stator poles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.