Web cutting method and apparatus
US4638702A · kind A · utility
2Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1984 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Jul 17, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/97
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The disclosed cutting method and apparatus produces a pattern cut in web material by providing a generally conically-shaped rotatable anvil and oppositely disposed knife edge shaped to produce the pattern cut. The axes of symmetry containing the apex of the cone is positioned at an acute angle to the axes about which the cone is rotated. With the web positioned over the knife, the knife is brought into pressure engagement with the anvil thereby piercing the web substantially at a point. Rotation of the anvil effects progressive cutting as the anvil surface traces the cutting edge of the knife.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.