Apparatus and method for producing springs
US9038432B2 · kind B2 · utility
1Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2009 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Sep 21, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21F35/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Using a method for producing a spring from a spring wire, turns of a first spring part are produced, wherein said produced turns move in a first direction. Thereafter, turns of a second spring part are produced, wherein said produced turns move in a second direction which is different from, in particular opposite of, the first direction. Such a method can be used to produce a spring having a plurality of spring parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.