Beryllium reinforced composite solid and hollow shafting
US3938964A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1974 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Mar 18, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12729
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A solid or hollow shaft has an aluminum or titanium matrix reinforced with rcuate-shaped beryllium ribbons arranged around a central rod or core to form a circular cross-sectional configuration. The shaft has a high degree of torsional stiffness which enables it to be used on advanced aircraft or high-speed rotating machinery without mid-support bearings. The shaft may be formed by cladding the beryllium rods in aluminum or titanium and arranging them around the central rod or core to form a preform with a circular cross-sectional configuration. The preform is then subjected to hydrostatic pressure, causing the beryllium rods to deform into arcuate-shaped ribbons. The core may then be retained or leached out to provide a hollow shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.