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:
Aug. 30, 1977
Filed:
Jun. 11, 1976
Lester Robert Le Blanc, Narragansett, RI (US);
Foster Hugh Middleton, Peace Dale, RI (US);
Other;
Abstract
The thickness of a layer of oil on water is obtained in digital form, which in one embodiment is recorded on a visually identifiable analog type display chart. An underwater ultrasonic transducer arrangement produces and receives pulses, which are digitalized and processed in a digital computer for thickness calculation and organization for the display. To handle a wide range of signal conditions that need be detected at various interfaces, such as water to oil and the oil to air, a dynamic threshold is computed that permits the detection and processing of signals appearing at two diverse interfaces in conventional signal processing circuits that therefore can handle a large range of different signal conditions, thus permitting measurement of the thickness of a liquid layer of oil on the surface of water. The thickness of other fluids interposed between fluids having dissimilar acoustical properties can also be obtained.