Shape memory alloy actuators
US6832478B2 · kind B2 · utility
35Cited by
13References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2003 |
| Grant date | Dec 21, 2004 |
| Priority date | — |
| Expiry date | Apr 9, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF03G7/0615
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electrically insulative layer of a shape memory alloy (SMA) actuator includes an inorganic material formed upon a portion of an SMA substrate. A conductive material formed upon a portion of the electrically insulative layer in a trace pattern includes a first end, a second end, and a heating element disposed between the first and second ends. The SMA substrate is trained to deform at a transition temperature achieved when electricity is conducted through the conductive material via first and second interconnect pads terminating the first and second ends of the trace pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.