SMA actuator
US8056335B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Feb 8, 2008 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Feb 8, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF03G7/0631
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A shape memory alloy actuated device is provided for engaging a movable object. The device may include a first movable component, a shape memory alloy for moving the first component from a first position to a second position, a biasing element configured to expand the shape memory alloy object and apply a continual tensile force to the shape memory alloy object. The device may be configured to allow the first component move between the first position and the second position other than by transferring force to the shape memory alloy object. The device may also be configured to allow the shape memory alloy object to expand and contract when the first component is retained in the first position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.