Coil forming apparatus
US4470436A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1982 |
| Grant date | Sep 11, 1984 |
| Priority date | — |
| Expiry date | Aug 13, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53161
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A coil forming apparatus of the type in which a coil (16) formed by winding a wire (1) around a winding frame (6, 7) having a plurality of winding steps (6a, 6b, 6c, 6d, 7a, 7b, 7c, 7d) of successively increased diameters is dropped into a coil receiving jig (3) disposed below the winding frame (6, 7) characterized in that pusher plates (21) adapted to vertically slide in slits formed in the winding frame (6, 7) to downwardly push the coil (16) formed on the winding steps are in stepped form corresponding to the contour of the winding of the winding frame and projecting a predetermined amount radially outwardly of the contour of each winding step and the vertical slide stroke is substantially equal to the height of each winding step, thus making it possible to reduce the overall height of the apparatus, shorten the coil forming time and facilitate the wire treatment between oils and at the terminal ends of coils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.