Asymmetrical shaping of slit segments of meshes formed in deformable strip
US4297866A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1979 |
| Grant date | Nov 3, 1981 |
| Priority date | — |
| Expiry date | Sep 19, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12368
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of forming elongated slit segments in deformable strip includes concurrently slitting and preforming the strip by intermeshing substantially convexly shaped tool surfaces each having a linear leading portion and a linear trailing portion joined by a rounded apex portion. The linear leading and trailing portions are collinear with and generally define portions of the sides of a triangle which has a base with a length equal to the length of the strip being slit. The length of the side of the triangle corresponding to and collinear with the leading portion is less than the length of the side of the triangle corresponding to and collinear with the trailing portion, and the angle formed between the side of the triangle corresponding to the leading portion and the base is not greater than 90.degree..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.