Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Distributive type parameters
Reexamination Certificate
2007-02-06
2007-02-06
Hirshfeld, Andrew H. (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Distributive type parameters
C342S124000
Reexamination Certificate
active
10997683
ABSTRACT:
An antenna device for determining the filling level of a filling material in a container (tank) comprising an essentially flat array antenna with an emitting area for emitting measuring signals towards the surface of the filling material and a holder for holding the array antenna over an opening of the container and to be connected to the rim of the opening in at least two points of attachment. Further, a protective dielectric cover covers the emitting area, the dielectric cover having an extension larger than the opening in order to extend over the rim of the opening. The antenna device provides several advantages, such as a very efficient sealing of the container opening, a very clean solution towards the container and a very effective protection of the array antenna.
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“International Search Report” for PCT/SE2005/001752.
Hirshfeld Andrew H.
SAAB Rosemount Tank Radar AG
Westman Champlin & Kelly P.A.
Zhu John
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