Self-protecting and conditioning memory metal actuator
US4559512A · kind A · utility
39Cited by
17References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1984 |
| Grant date | Dec 17, 1985 |
| Priority date | — |
| Expiry date | Dec 28, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2061/0115
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A shape-memory-effect actuator is provided having a shape-memory-alloy spring and a compensator spring. The alloy spring is operatively connected to a concentrically-mounted compensator spring by the use of a protective support housing which surrounds the alloy spring. The actuator includes a shape-memory-alloy spring and a compensator spring that regulates the operating conditions of the shape-memory-alloy spring to a chosen corresponding memory relaxation curve. The memory relaxation curve defines the actuator's operating stress, stroke and life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.