The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2025
Filed:
Nov. 24, 2022
Cambridge Mechatronics Limited, Cambridge, GB;
Andrew Benjamin Simpson Brown, Cambridge, GB;
Stephen Matthew Bunting, Cambridge, GB;
Robin Eddington, Cambridge, GB;
Oliver Hart, Cambridge, GB;
James Howarth, Cambridge, GB;
CAMBRIDGE MECHATRONICS LIMITED, Cambridge, GB;
Abstract
An actuator assembly comprising: a support structure comprising a first friction surface; a movable part comprising a second friction surface engaging the first friction surface; one or more SMA wires arranged, on contraction, to move the movable part relative to the support structure to any position within a range of movement; a biasing arrangement arranged to bias the first and second friction surfaces against each other with a normal force, thereby generating a static frictional force that constrains the movement of the movable part relative to the support structure at any position within the range of movement when the one or more SMA wires are not contracted; wherein the one or more SMA wires are arranged, on contraction, to reduce the normal force between first and second friction surfaces.