Apparatus for perforating sheet material
US4672168A · kind A · utility
13Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1978 |
| Grant date | Jun 9, 1987 |
| Priority date | — |
| Expiry date | Oct 25, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/0846
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Apparatus is disclosed for forming plural rows of holes in a web of sheet material being advanced longitudinally along a unidirectional path of travel, the apparatus including a continuous wave laser and beam delivery apparatus. Beam delivering means delivers substantially the entire energy of the laser beam for predetermined periods of time to discrete web portions spaced apart across the web and includes means periodically interposed into and removed from the path of the laser beam for deflecting the beam periodically toward the web portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.