Bobbin body and process for producing the same
US5876525A · kind A · utility
2Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1993 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Nov 30, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/5116
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In order to simplify the production of a nigh-resistance bobbin body made of an aluminum alloy, the following process steps are performed: (a) extruding or flow extruding an essentially cylindrical bobbin blank; (b) cutting the bobbin blank to a length including the desired bobbin body length plus an overlength sufficient to form end flanges on the bobbin body; (c) shaping end flanges at both ends of the bobbin body from the overlength portion; hardening the bobbin body; and age-hardening (aging) the bobbin body. Various process parameters are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.