Cavity forming press
US4765166A · kind A · utility
11Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1987 |
| Grant date | Aug 23, 1988 |
| Priority date | — |
| Expiry date | Jun 15, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49805
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A press for shaping a sheet metal blank in a cavity with a forming tool which determines the shape of the finished product. The sheet is pressed against the tool by a diaphragm which is influenced by a pressure medium on the side facing away from the cavity. The forming tool consists of an inexpensive casting material supported in a cup-shaped container. The space between the bottom and sides of the container and the bottom and sides of the cavity is filled with an elastic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.