Sheet-metal formed with spaced projections and manufacturing method of the same
US6708543B2 · kind B2 · utility
8Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2001 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Mar 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49805
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A sheet metal formed thereon with a number of spaced projections, wherein the projections are formed by the steps of positioning the sheet metal between a female die formed with a number of spaced recesses at one surface thereof and a male die formed with a concavity to be coupled with the female die and a number of spaced projections located at the bottom of the concavity to correspond with the recesses of the female die and pressing the sheet metal under existence of hydraulic fluid between the sheet metal and the concavity of the male die.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.