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. 04, 2002
Filed:
Nov. 03, 2000
Applicant:
Inventors:
Alexander Marnix Heijnsdijk, Papendrecht, NL;
Jeroen Martin van Klooster, Tiel, NL;
Assignee:
Krohne A.G., , CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F 1/66 ;
U.S. Cl.
CPC ...
G01F 1/66 ;
Abstract
An ultrasonic waveguide for guiding an ultrasonic signal situated in a predetermined frequency range is illustrated and described. The ultrasonic waveguide according to the invention is characterized in that it has a coiled foil whose layer thickness is considerably less than the smallest wavelength of the ultrasonic signal in the predetermined frequency range in the foil material. The result is that ultrasonic signal interference and attenuation in the ultrasonic waveguide due to scattering and dispersion are largely avoided.