Duct stringer with bulkhead
US11465731B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2019 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Jun 18, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/40
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A duct stringer has duct walls providing a duct with a closed cross-section; and a bulkhead in the duct. The duct is adapted to transport fluid, and the bulkhead is adapted to block the flow of fluid along the duct. The bulkhead is adhered to the duct walls by one or more co-cured or co-bonded joints. The bulkhead includes a pair of bulkhead parts, each with a web and one or more flanges. The duct stringer is manufactured by positioning the mandrels end-to-end with the bulkhead parts back-to-back between them; wrapping or laying-up the duct walls around the bulkhead parts and the mandrels; co-curing or co-bonding the flanges of the bulkhead parts to the duct walls; and after the bulkhead has been adhered to the duct walls, removing the mandrels from opposite ends of the duct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.