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:
Jun. 29, 2021
Filed:
Aug. 30, 2019
The Boeing Company, Chicago, IL (US);
Advanced Fibreoptic Engineering Ltd., Oxfordshire, GB;
Marco Zanola, Oxford, GB;
Mark Johnson, London, GB;
The Boeing Company, Chicago, IL (US);
Abstract
A fluid level sensing device for determining the level of the interface between a first fluid and a second fluid in a container. The fluid level sensing device comprising an optical waveguide for disposal in the container for at least partial immersion in the first fluid; a light source for providing input light to the optical waveguide; and a light detector for sensing output light from the optical waveguide. The optical waveguide comprises a plurality of curved portions. Successive ones of the curved portions are curved in alternating directions. The optical waveguide is configured such that a curved portion immersed in the first fluid has a greater light loss profile than a curved portion not immersed in the first fluid. The output light from the optical waveguide provides a measure of the level of the interface based on light loss of the input light through the optical waveguide.