公开(公告)号：WO2021262531A1

公开(公告)日：2021-12-30

申请号：PCT/US2021/037947

申请日：2021-06-17

Applicant: HUTCHINSON TECHNOLOGY INCORPORATED

Inventor： RUZICKA, Ryan, N. ,  SAKAMOTO, Yasushi

IPC: F03G7/06 ,  G02B7/04 ,  G02B7/09 ,  G02B7/10 ,  G03B3/10 ,  G03B13/36 ,  H01H61/00 ,  F03G7/06143 ,  F03G7/0665

Abstract: SMA actuators and related methods are described. One embodiment of an actuator includes a base; a plurality of buckle arms; and at least a first shape memory alloy wire coupled with a pair of buckle arms of the plurality of buckle arms. Another embodiment of an actuator includes a base and at least one bimorph actuator including a shape memory alloy material. The bimorph actuator attached to the base.

公开(公告)号：WO2022208066A1

公开(公告)日：2022-10-06

申请号：PCT/GB2022/050775

申请日：2022-03-29

Applicant: CAMBRIDGE MECHATRONICS LIMITED

Inventor： HEIJNE, Nicolas ,  BROWN, Andrew Benjamin Simpson ,  HOWARTH, James ,  SOUTH, Adam

IPC: F03G7/06 ,  G02B7/02 ,  G03B3/10 ,  F03G7/06143 ,  F03G7/067 ,  G02B27/646 ,  G03B13/36 ,  G03B15/05 ,  G03B2205/0007 ,  G03B2205/0046 ,  G03B2205/0076

Abstract: A shape memory alloy (SMA) actuator assembly (1) comprising: a movable part (100); a support structure (3); one or more SMA wires arranged, on contraction, to tilt the movable part relative to the support structure about two orthogonal axes that are perpendicular to a primary axis (O) of the support structure; and axial translation constrainers (16) configured to limit axial translation of the movable part relative to the support structure along the primary axis of the support structure, wherein the axial translation constrainers are arranged to prevent all points of the movable part from simultaneously reaching their most extreme position along the primary axis of the support structure allowed by the range of possible tilt of the movable part relative to the support structure.

公开(公告)号：WO2023057765A1

公开(公告)日：2023-04-13

申请号：PCT/GB2022/052533

申请日：2022-10-06

Applicant: CAMBRIDGE MECHATRONICS LIMITED

Inventor： ARMSTRONG, Samuel

IPC: F03G7/06 ,  F03G7/06143 ,  F03G7/0616 ,  G02B27/64 ,  G02B27/646 ,  G02B7/08

Abstract: The application relates to an actuator assembly comprising: a support structure; a movable part; a drive arrangement configured to move the movable part relative to the support structure. The movable part comprises one or more end-stops protruding from corners and/or sides of the movable part, and configured to engage one or more complementary end-stops of the support structure so as to limit lateral movement of the movable part relative to the support structure in directions perpendicular to a primary axis. The one or more end-stops and the one or more complementary end-stops are configured such that a minimum lateral clearance between the one or more end-stops and the one or more complementary end-stops is maintained when the movable part is rotated about the primary axis.

公开(公告)号：WO2021255469A1

公开(公告)日：2021-12-23

申请号：PCT/GB2021/051549

申请日：2021-06-17

Applicant: CAMBRIDGE MECHATRONICS LIMITED

Inventor： BROWN, Andrew Benjamin Simpson ,  HOWARTH, James ,  LANGHORNE, Robert ,  KIST, René

IPC: F03G7/06 ,  G02B7/00 ,  G02B7/02 ,  G02B7/04 ,  G03B3/10 ,  G03B5/00 ,  F03G7/06143 ,  F03G7/067 ,  G02B7/08 ,  G03B2205/0007 ,  G03B2205/0046 ,  G03B2205/0076 ,  G03B30/00

Abstract: A shape memory alloy (SMA) actuator comprising: a support structure (10); a moveable part (20) movable relative to the support structure; plural SMA components (30) connecting the support structure and the movable part, the SMA components are operable to controllably change the position and/or orientation of the moveable part in two or more degrees of freedom; a controller (12) for controlling the operation of the SMA components in a first operating mode during normal operation and a second operating mode in response to an event; and means configured to, during the second operating mode, maintain at least partial control of the moveable part with a subset of the plural SMA components.

公开(公告)号：WO2023278912A2

公开(公告)日：2023-01-05

申请号：PCT/US2022/072164

申请日：2022-05-06

Applicant: ENSIGN-BICKFORD AEROSPACE & DEFENSE COMPANY

Inventor： REDDIX, Zachary D. ,  KOCHANEK, Andrew M. ,  BARGLOWSKI, Michael ,  MORLATH, Robert

IPC: F03G7/06 ,  H02N10/00 ,  F03G7/0614 ,  F03G7/06143 ,  F03G7/0631

Abstract: An actuator, a release device, and a method of actuating a release device are provided. The actuator comprises a housing defining a first path; an actuating element disposed within the first path, the actuating element being made from a shape memory alloy having a transition temperature, the actuating element being configured to couple with a power source, at least portion of the actuating element being further configured to not change shape when the power source applies a first current for a predetermined amount of time and moves at least a portion of the actuating element from the first position to a second position when the power source applies a second current; and a heat transfer material disposed in the first path between the actuating element and the housing.