Co-cured composite structures and method of making them
US6743504B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2001 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | May 16, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2909
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A composite structure has composite skin layers and at least two elongated stiffener/spacer composite members interposed between the skin layers. The stiffener/spacer composite members are arranged generally longitudinally of the skin layers in spaced-apart relation laterally. Each of the skin layers is formed by assembling a layer of an uncured resin-impregnated fiber material on a forming surface of a jig. Each stiffener/spacer composite member is formed of an uncured resin-impregnated fiber material that is laid up over an elongated hollow mandrel of a stiffened fabric and is assembled to one of the uncured skin layers. The jigs are juxtaposed to form a sandwich with the assembled uncured composite layers, which are then vacuum-bagged and co-cured under a predetermined pressure and a predetermined temperature to render the structure unitary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.