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:
Nov. 14, 2006
Filed:
Aug. 31, 2004
Fred M. Mueller, Los Alamos, NM (US);
Lawrence Bronisz, Los Alamos, NM (US);
Holger Grube, Los Alamos, NM (US);
David C. Nelson, Santa Fe, NM (US);
Jonathan L. Mace, Los Alamos, NM (US);
Fred M. Mueller, Los Alamos, NM (US);
Lawrence Bronisz, Los Alamos, NM (US);
Holger Grube, Los Alamos, NM (US);
David C. Nelson, Santa Fe, NM (US);
Jonathan L. Mace, Los Alamos, NM (US);
The United States of America as represented by the United States Department of Energy, Washington, DC (US);
Abstract
A magnetic infrasound sensor is produced by constraining a permanent magnet inside a magnetic potential well above the surface of superconducting material. The magnetic infrasound sensor measures the position or movement of the permanent magnet within the magnetic potential well, and interprets the measurements. Infrasound sources can be located and characterized by combining the measurements from one or more infrasound sensors. The magnetic infrasound sensor can be tuned to match infrasound source types, resulting in better signal-to-noise ratio. The present invention can operate in frequency modulation mode to improve sensitivity and signal-to-noise ratio. In an alternate construction, the superconductor can be levitated over a magnet or magnets. The system can also be driven, so that time resolved perturbations are sensed, resulting in a frequency modulation version with improved sensitivity and signal-to-noise ratio.