Apparatus for punching holes in boards
US4459891A · kind A · utility
3Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1982 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Sep 23, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9314
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The apparatus includes a rotatably mounted roll having an elastomeric sleeve with nails mounted therein at equal angles respectively to corresponding imaginary radial lines of the roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.