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:
May. 24, 2005
Filed:
Jul. 09, 2002
Joachim Benz, Hausach, DE;
Joachim Benz, Hausach, DE;
VEGA Grieshaber KG, Wolfach, DE;
Abstract
A level indicator emits measuring pulses (M) onto the surface (O) of a material (F) that is filled into a container, wherein second echo pulses (E) are directly reflected at the surface of the material to the transmitting and receiving antenna (A) of the level indicator. Third echo pulses (E) are reflected by the container wall (BW) and then to the transmitting and receiving antenna (A) due to diffuse reflection on the surface (O). First echo pulses (E) are reflected at exposed parts, e.g., welding seams (SW) of the container wall (BW), to the transmitting and receiving antenna (A). The echo pulses (EEE) received by the transmitting and receiving antenna (A) are low-pass filtered by means of a preferably digital low-pass filter (TP) and then evaluated in an evaluation unit (AW). Due to this low-pass filtering, the second and the third echo pulses (EE) are combined into a single echo pulse (EV). The level indicator is particularly suitable for measuring the level (H) of pourable solids (F).