Hydroforming of porthole extrusion with non-equiangular seams
US11911817B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jun 8, 2021 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Oct 21, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D53/88
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus for forming a part is provided, which includes a die. The die includes a round orifice, a central mandrel disposed within the round orifice, and a plurality of bridges and a corresponding plurality of portholes between the bridges. The bridges and the portholes extending around the central mandrel. A spacing of the bridges around the mandrel is non-equiangular. The die allows a material to be extruded through the die to form a round, closed geometry tube from the material such that the round, closed geometry tube has non-equiangular welds after emerging from the die.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.