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:
Nov. 10, 1981
Filed:
Sep. 13, 1979
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A device for measuring the fill level in a container at least partially filled with a liquid, particularly for determining the liquid level in a fuel tank, in which a measuring resistor, comprising a metallic resistance layer having a great temperature coefficient of the specific resistance is carried by a carrier foil. The portion of the resistance layer disposed in the liquid remains cold, while that portion above the liquid is at a higher temperature, whereby the difference between the present resistance and that of an empty tank is proportional to the fill level within the tank. The change of resistance preferably is measured in connection with that of a comparator resistor which is not heated and compensates for temperature influence etc. An influence on the measurement due to convection in the fuel tank is prevented by means of covering sheets which are spaced a small distance from the resistors by means of suitable spacing strips.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile