Device for exerting a pressure developing in stages on a part
US4897006A · kind A · utility
15Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1988 |
| Grant date | Jan 30, 1990 |
| Priority date | — |
| Expiry date | Aug 29, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S411/909
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Shape memory alloy spring washers passing from a flat shape to a truncated cone shape on exceeding a given critical temperature (Tc) can be stacked in opposition or in the same sense with identical and/or different washers, in order to bring about a development in stages of the pressure (P) applied by the stack of washers when the temperature (T) varies. These washers can advantageously be used for the bonding and polymerization of composite material parts (C), because they make it possible to simultaneously treat several parts in the same ventilated oven and in a less expensive manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.