Coil winding method for maximum utilization of winding envelope
US4794361A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1988 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Mar 10, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49071
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A coil winding method wherein only one-half turn is wound in the bottom slot of the first layer of the coil. This results in the loss of one-half turn, but causes the normal crossover from the first layer to the second layer to occur on the side of the coil opposite the lead-end. The last one-half turn of the second layer wound in the bottom slot of the first layer, thereby recovering the lost one-half turn. Additional turns are added in this manner until approximately one-half of the layers have been wound. Thereafter, the usual progressive winding method is employed. As a result, crossover related build-up in the completed coil is distributed between opposite sides of the coil and the number of turns within the allowable profile is substantially maximized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.