Press brake
US4411148A · kind A · utility
21Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1981 |
| Grant date | Oct 25, 1983 |
| Priority date | — |
| Expiry date | Mar 25, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D5/045
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A press brake comprises at least one driven bending tool, which is adapted to cooperate with a second bending tool. In order to provide a great latitude regarding the bending operations to be performed, the driven bending tool is driven by means of a four-bar linkage, which comprises two crank arms, which are rotatably mounted in a frame, and a link, which connects the crank arms and carries the driven bending tool. An adjusting drive is provided which is power-operable to displace the pivot connecting one of said crank arms to the frame or to change the length of one of said crank arms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.