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:
Dec. 06, 2022
Filed:
Oct. 09, 2018
Applicant:
Cambridge Mechatronics Limited, Cambridge, GB;
Inventors:
Mark George Easton, Cambridge, GB;
Jonathan Morgan, Cambridge, GB;
Assignee:
CAMBRIDGE MECHATRONICS LIMITED, Cambridgeshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 27/02 (2006.01); G02B 7/02 (2021.01); F03G 7/06 (2006.01);
U.S. Cl.
CPC ...
G01R 27/02 (2013.01); G02B 7/02 (2013.01); F03G 7/065 (2013.01);
Abstract
An apparatus is disclosed for measuring the resistance of a shape memory alloy, SMA, wire. The apparatus comprises: an SMA wire; a sense resistor connected in series with the SMA wire; a measurement circuit configured to perform a measurement indicative of the potential difference across at least the SMA wire; and a measurement switch between the SMA wire and the sense resistor. The measurement switch is configured to connect either to the measurement circuit such that the measurement circuit can perform the measurement or to a circuit that bypasses the sense resistor.