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:
Oct. 07, 2014
Filed:
May. 08, 2009
Limin Song, West Windsor, NJ (US);
Julio D. Lobo, Baden, CH;
Jormarie Bitar, Fairfax, VA (US);
Mark M. Disko, Glen Gardner, NJ (US);
Limin Song, West Windsor, NJ (US);
Julio D. Lobo, Baden, CH;
Jormarie Bitar, Fairfax, VA (US);
Mark M. Disko, Glen Gardner, NJ (US);
ExxonMobil Research & Engineering Company, Annandale, NJ (US);
Abstract
The present invention is a non-intrusive method to determine the fluid level in a vessel. In a preferred embodiment, the vessel is a delayed coker drum in a refinery. Waves are generated in the vessel from an outside source. For wall vibration generated in the frequency range of 1-20,000 Hz, accelerometers on the exterior wall of the vessel measures the frequency of the vibration modes of the vessel. The fluid level can be related to the frequency of the vibration mode.