Profile element pipe for hydraulic bulging, hydraulic bulging device using the element pipe, hydraulic bulging method using the element pipe, and hydraulically bulged product
US7827839B2 · kind B2 · utility
1Cited by
14References
19Claims
0Family size
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Key dates
| Filing date | Dec 21, 2007 |
| Grant date | Nov 9, 2010 |
| Priority date | — |
| Expiry date | Jan 5, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49805
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
According to a bulging device and a bulging method using a profile element pipe, for example, even when a profile steel pipe having a cross sectional shape varying in the axial direction as in a tapered pipe is hydraulically bulged, a bulging in which an internal pressure loading and an axial pressing are combined with each other can be performed to provide a larger expansion ratio than a conventional case and a joining and socket connection thereof to the other part can also be easily performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.