Invention Grant
- Patent Title: Shape memory alloy actuation apparatus
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Application No.: US14378893Application Date: 2013-02-18
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Publication No.: US09753300B2Publication Date: 2017-09-05
- Inventor: James Howarth
- Applicant: CAMBRIDGE MECHATRONICS LIMITED
- Applicant Address: GB Cambridge, Cambridgeshire
- Assignee: CAMBRIDGE MECHATRONICS LIMITED
- Current Assignee: CAMBRIDGE MECHATRONICS LIMITED
- Current Assignee Address: GB Cambridge, Cambridgeshire
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: GB1202693.6 20120216; GB1208713.6 20120517
- International Application: PCT/GB2013/050382 WO 20130218
- International Announcement: WO2013/121225 WO 20130822
- Main IPC: G02B27/64
- IPC: G02B27/64 ; G02B7/02 ; F03G7/06 ; G03B3/10 ; G03B5/00

Abstract:
An SMA actuation apparatus (1) comprises a support structure (4) on which a movable element (2) is supported. Four SMA actuator wires (11-14) are connected at their ends to one of the support structure (4) and the movable element (2) and being hooked over a respective connector (7) connected to the other. Pairs of the SMA actuator wires (11-14), on contraction, to drive movement of the movable element (2) relative to the support structure (4), through the respective connectors (7), in opposite directions in said plane (XY), that are orthogonal as between the pairs. Each connector (7) is compliant laterally to the direction in which the respective SMA actuator wire (11-14) drives movement of the movable element (2) relative to support structure (4).
Public/Granted literature
- US20150346507A1 SHAPE MEMORY ALLOY ACTUATION APPARATUS Public/Granted day:2015-12-03
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