Hole punch having a slidable slipper and adjustable punches
US5797308A · kind A · utility
16Cited by
20References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Sep 3, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/8851
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hand-operated punch with adjustable assembly punch units and a slipper to receive punched out discs in which the assembly units are adjustable from the bottom through an opening in the slipper. The punch includes a strengthening flap configuration and the assembly units slide but do not turn during adjustment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.