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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.:

US 12217909 B1

PDFFull Text
Date of Patent:
Feb. 04, 2025

Filed:

Mar. 22, 2022

Soft bistable magnetic actuator and fabrication method thereof, fatigue testing device and auto underwater vehicle

Applicant:

City University of Hong Kong Matter Science Research Institute (Futian), Shenzhen, CN;

Inventors:

Jian Lu, Shenzhen, CN;

Zhou Chen, Shenzhen, CN;

Lei Wan, Shenzhen, CN;

Yunhu He, Shenzhen, CN;

Assignee:

City University of Hong Kong Matter Science Research Institute (Futian), Shenzhen, CN;

Attorney:

Westbridge IP LLC

Primary Examiner:

Leo B Tentoni

Int. Cl.
CPC ...
C08K 3/38 (2006.01); B29C 45/00 (2006.01); B29C 45/16 (2006.01); C08L 83/00 (2006.01); C08L 83/04 (2006.01); H01F 1/053 (2006.01); H01F 1/113 (2006.01); H01F 1/117 (2006.01); H01F 1/34 (2006.01); H01F 7/20 (2006.01); H01F 41/02 (2006.01); H01H 55/00 (2006.01); B29C 71/00 (2006.01); B29K 83/00 (2006.01); B29K 505/02 (2006.01); B29K 505/08 (2006.01); B29K 505/12 (2006.01); C08K 3/22 (2006.01);
U.S. Cl.
CPC ...
H01F 7/204 (2013.01); B29C 45/006 (2013.01); B29C 45/1615 (2013.01); B29C 45/164 (2013.01); H01F 1/0533 (2013.01); H01F 41/0266 (2013.01); H01H 55/00 (2013.01); B29C 2045/1601 (2013.01); B29C 2045/169 (2013.01); B29C 2071/0027 (2013.01); B29K 2083/00 (2013.01); B29K 2505/02 (2013.01); B29K 2505/08 (2013.01); B29K 2505/12 (2013.01); B29K 2995/0008 (2013.01); C08K 2003/2265 (2013.01);
Abstract

Disclosed are a soft bistable magnetic actuator, a fabrication method thereof, a fatigue testing device, and an auto underwater vehicle. The method for fabricating the soft bistable magnetic actuator includes the following operations: casting a soft precursor by injection molding, wherein the soft precursor consists of a soft deformable portion and a soft peripheral portion surrounded, the soft deformable portion is made of magnetic particles and polymer, and the soft peripheral portion is made of a magnetic particle, a mixture of organic liquid, and polymer; and extracting the organic liquid by an organic solvent shrinks the soft peripheral portion, buckles the soft deformable portion towards one side.

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