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:
May. 24, 2022
Filed:
May. 15, 2019
National Technology & Engineering Solutions of Sandia, Llc, Albuquerque, NM (US);
Fabio Semperlotti, West Lafayette, IN (US);
Hongfei Zhu, West Lafayette, IN (US);
Timothy Walsh, West Lafayette, IN (US);
Fabio Semperlotti, West Lafayette, IN (US);
Hongfei Zhu, West Lafayette, IN (US);
National Technology & Engineering Solutions of Sandia, LLC, Albuquerque, NM (US);
Purdue Research Foundation, West Lafayette, IN (US);
Abstract
An acoustic shield for protecting a vibrational sensitive device includes a first unit cell and a second unit cell. The first unit cell includes a first locally resonant unit. The first locally resonant unit controls a first phase gradient and the first unit cell includes a first surface. The second unit cell includes a second surface proximate to the first surface. The second unit cell includes a second locally resonant unit embedded along the second interface. The second locally resonant unit controls a second phase gradient. The first phase gradient is different from the second phase gradient. The first unit cell and the second unit cell comprise a super cell. The acoustic shield is configured such that a vibrational wave from a first side of the super cell to a second side of the super cell is substantially attenuated.