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US 7,250,839 B2Granted
Magnetostrictive thin film actuator
AssigneeEnergen, Inc.
InventorsLivia M. Racz, Chandrashekhar H. Joshi
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Abstract
Magnetostrictive actuator. The actuator includes a flexible substrate and a magnetostrictive film on the substrate. The shape of the flexible substrate is altered in the presence of a magnetic field.
Claims6
Actuator or comprising:
- A flexible substrate;
- A magnetostrictive film on the substrate;
- A layer of a hard magnetic material disposed on the magnetostrictive film to provide long-term shape memory and zero-power hold capability;
- and
- Means for applying a magnetic field to the magnetostrictive film whereby the shape of the flexible substrate is altered.
2 more elements
Actuate or comprising:
- A flexible substrate;
- and
- A magnetostrictive film on the substrate whereby the shape of the flexible substrate is altered in the presence of a magnetic field, further including a layer of a hard magnetic material on the magnetostrictive film to provide zero-power hold capability.
Dependencies are inferred from the claim text.