Memory metal actuator
US4553393A · kind A · utility
336Cited by
17References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1983 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Aug 26, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF03G7/067
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A mechanical actuator can be constructed by employing a plurality of memory metal actuator elements in parallel to control the amount of actuating force. In order to facilitate direct control by digital control signals provided by a computer or the like, the actuating elements may vary in stiffness according to a binary relationship. The cooling or reset time of the actuator elements can be reduced by employing Peltier junction cooling assemblies in the actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.