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:
Feb. 22, 2005
Filed:
Mar. 17, 2003
Magnus Ohlsson, Norsholm, SE;
Magnus Ohlsson, Norsholm, SE;
Saab Rosemount Tank Radar AB, Gothenburg, SE;
Abstract
The present invention relate to a horn antenna at a radar level gauge for determination of a level of a surface of a medium stored in a tank and a method of making a horn antenna which is mechanically constituted such that the horn antenna will withstand the environment of the tank interior. The antenna comprises a first conductive housing () having a wave guide port (), which is connectable to a wave guide, a first aperture (), which is separated from the wave guide port () and a fist divergent section between the wave guide port () and the first aperture (). A dielectric body () is arranged inside and essentially filling the first conductive housing (), which body () displays a free end () in the area of the first aperture (). The horn antenna is characterized in that around the first aperture () is arranged a locking device (), which is arranged to fix the dielectric body () in the first housing () and that in the area of the locking device () is arranged at least one flexible sealing element () between the dielectric body () and the first cover ().