Device for pressing sheet material
US5067336A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1989 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Dec 28, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49805
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Device for pressing sheet material blanks, in particular sheet metal blanks (10), comprising a cushion (2) composed of an elastic material disposed in a retaining box (1), an arrangement for performing the sheet blank constituted by an outer slide carrying an upper blank holder (6), and an arrangement for finally forming the sheet blank constituted by a central slide acting on a punch (8), the device further comprising a lower blank blank holder constituted by an element (3) for supporting and maintaining at least a portion of the sheet blank (10), placed directly on the elastic cushion (2) and cooperative with the upper blank holder (6) for gripping the sheet blank in at least localized region of the blank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.