Trough-shaped sheet metal component with a deeper and a shallower portion
US4359023A · kind A · utility
2Cited by
6References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1980 |
| Grant date | Nov 16, 1982 |
| Priority date | — |
| Expiry date | Apr 23, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D22/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A trough-shaped sheet metal component with a deeper and a shallower portion such as an oil pan for combustion engines, and a method of deep-drawing it. In the transition between the deeper and the shallower portion, the edge between the bottom of the shallower portion and its side walls is made with a much shorter radius than the central portion. In deep-drawing the shallower portion and the transitional area, a pressure pad is used in the transitional area, where the material is locked in between die and pressure pad, so that working only takes place by bending in the edge areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.