Foam tooling removal method
US5057174A · kind A · utility
15Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1990 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Jul 5, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1003
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A technique is provided for removing foam mandrel material from a stiffener section of a composite structural member as is employed in lightweight aircraft skin structures. The technique involves the direct pressure glass bead blasting of the mandrel material. By mounting a blasting nozzle within a rubber hose of larger diameter, an airstream containing glass beads may be directed outwardly through the nozzle while evacuating pressure is created in an annular passageway between the hose and the nozzle to evacuate mandrel foam particles as well as spent glass beads. The result is a clean channel within the stiffener section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.