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US 12,492,685 B2Granted
SMA actuator assembly
AssigneeCambridge Mechatronics Limited
InventorAndrew Benjamin Simpson Brown
Life of this patent
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Abstract
An SMA actuator assembly (2) comprising: first and second parts (4,6) that are movable relative to each other; and an SMA wire (10) arranged, on contraction, to drive relative movement of the first and second parts; and a heat transfer material (30) arranged between the first and second parts and around at least a portion of the SMA wire so as to transfer heat between the SMA wire and first and/or second parts, wherein the heat transfer material is configured to deform so as to allow relative movement of the first and second parts.
Claims19
An SMA actuator assembly comprising:
- first and second parts that are movable relative to each other;
- an SMA wire arranged, on contraction, to drive relative movement of the first and second parts;
- and
- a heat transfer material arranged between the first and second parts and around at least a portion of the SMA wire to transfer heat between the SMA wire and first and/or second parts, wherein the heat transfer material is configured to deform to allow relative movement of the first and second parts;
- wherein the heat transfer material is arranged to undergo shear deformation when the first and second parts are moved relative to each other.
2 more elements
Dependencies are inferred from the claim text.