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. 17, 2016
Filed:
Mar. 24, 2011
Sergey Ivanovich Krivosheev, St. Petersburg, RU;
Evgeni Lvovich Svechnikov, St. Petersburg, RU;
Georgy Petrovich Zhabko, St. Petersburg, RU;
Andrey Aleksandrovich Belov, St. Petersburg, RU;
Yuri Eduardovich Adamian, Pos. Kuzmolobsky Leningradskaya obl., RU;
Sergey Ivanovich Krivosheev, St. Petersburg, RU;
Evgeni Lvovich Svechnikov, St. Petersburg, RU;
Georgy Petrovich Zhabko, St. Petersburg, RU;
Andrey Aleksandrovich Belov, St. Petersburg, RU;
Yuri Eduardovich Adamian, Pos. Kuzmolobsky Leningradskaya obl., RU;
FMC Kongsberg Subsea AS, Kongsberg, NO;
Abstract
The invention relates to a method and apparatus for determining the nature of a material in a cavity between one inner metal wall and one outer metal wall provided outside the inner metal wall. First a tool is located on the inside of the inner metal wall, where the tool comprises a pulse generator and a signal recorder. An electromagnetic short duration pulse is generated by means of the pulse generator, the pulse inducing mechanical vibrations in the walls. Data representing the reflections of the mechanical vibrations from said cavity is recorded by means of the signal recorder. The recorded data is analyzed to determine the nature of the material in the cavity.