Manufacturing method of body frame and body frame
US11413673B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Mar 5, 2020 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Dec 17, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D25/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A manufacturing method of a body frame includes a pre-strain step of press molding a wavy shape portion in the body frame to apply pre-strain after any press molding to mold the body frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.