公开(公告)号：US11460011B2

公开(公告)日：2022-10-04

申请号：US17277070

申请日：2019-09-18

Applicant: CAMBRIDGE MECHATRONICS LIMITED

Inventor： Andrew Benjamin David Brown ,  Daniel Burbridge

IPC: F03G7/06 ,  G01L1/00 ,  G12B1/00

Abstract: Broadly speaking, embodiments of the present techniques provide methods for driving shape memory alloy (SMA) actuator wires in a more power-efficient manner.

公开(公告)号：US11767829B2

公开(公告)日：2023-09-26

申请号：US17900986

申请日：2022-09-01

Applicant: CAMBRIDGE MECHATRONICS LIMITED

Inventor： Andrew Benjamin David Brown ,  Daniel Burbridge

IPC: F03G7/06 ,  G01L1/00 ,  G12B1/00

CPC classification number: F03G7/0665 ,  G01L1/005 ,  G12B1/00

Abstract: Broadly speaking, embodiments of the present techniques provide methods for driving shape memory alloy (SMA) actuator wires in a more power-efficient manner.

公开(公告)号：US20210372380A1

公开(公告)日：2021-12-02

申请号：US17277070

申请日：2019-09-18

Applicant: CAMBRIDGE MECHATRONICS LIMITED

Inventor： Andrew Benjamin David Brown ,  Daniel Burbridge

IPC: F03G7/06

Abstract: Broadly speaking, embodiments of the present techniques provide methods for driving shape memory alloy (SMA) actuator wires in a more power-efficient manner.

公开(公告)号：US20220412326A1

公开(公告)日：2022-12-29

申请号：US17900986

申请日：2022-09-01

Applicant: CAMBRIDGE MECHATRONICS LIMITED

Inventor： Andrew Benjamin David Brown ,  Daniel Burbridge

IPC: F03G7/06 ,  G01L1/00 ,  G12B1/00

Abstract: Broadly speaking, embodiments of the present techniques provide methods for driving shape memory alloy (SMA) actuator wires in a more power-efficient manner.

公开(公告)号：US20220003957A1

公开(公告)日：2022-01-06

申请号：US17291334

申请日：2019-11-15

Applicant: CAMBRIDGE MECHATRONICS LIMITED

Inventor： Andrew Benjamin Simpson Brown ,  Stephen Bunting ,  James Howarth ,  Daniel Burbridge

IPC: G02B7/00 ,  G03B5/04 ,  H02K41/035

Abstract: An actuator assembly comprises a static part and a movable part. A helical bearing arrangement supporting the movable part on the static part guides helical movement of the movable part with respect to the static part around a helical axis. One or more actuators, that are not shape memory alloy actuators, are arranged to drive movement of the movable part around the helical axis, which thereby includes a component of translational movement along the helical axis. The helical movement increases the force within the actuator assembly allowing actuation of heavier movable parts, and may improve posture.

公开(公告)号：US20210263392A1

公开(公告)日：2021-08-26

申请号：US17253696

申请日：2019-06-21

Applicant: CAMBRIDGE MECHATRONICS LIMITED

Inventor： Andrew Brown ,  Stephen Bunting ,  Daniel Burbridge ,  Oliver Hart ,  Nicholas Heijne ,  James Howarth ,  Marc-Sebastian Scholz

IPC: G03B3/10 ,  F03G7/06 ,  G02B7/00 ,  H04N5/232

Abstract: A shape memory alloy actuation apparatus comprises a support structure (2) and a movable element (10). A helical bearing arrangement (20) supporting the movable element on the support structure guides helical movement of the movable element with respect to the support structure around a helical axis (H). At least one shape memory alloy actuator wire (60) is connected between the support structure and the movable element in, or at an acute angle to, a plane normal to the helical axis, so as to drive rotation of the movable element around the helical axis which the helical bearing arrangement converts into said helical movement.