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:
Aug. 04, 2020
Filed:
Feb. 03, 2016
Applicant:
Lawrence Livermore National Security, Llc, Livermore, CA (US);
Inventor:
Andrew J. Pascall, Livermore, CA (US);
Assignee:
Lawrence Livermore National Security, LLC, Livermore, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 3/36 (2006.01); G09B 21/00 (2006.01); H01F 7/08 (2006.01);
U.S. Cl.
CPC ...
G09B 21/004 (2013.01); H01F 7/081 (2013.01);
Abstract
A texture-inducible substrate includes a backplate, a deformable membrane positioned in front of the backplate to form a gap therebetween, and a ferrofluid contained in the gap. The substrate also includes an electromagnet positioned on the backplate to induce, when activated, a local volume of the ferrofluid to expand in volume and increase in viscosity so as to locally deform and raise an adjacent section of the deformable membrane.