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. 17, 2004
Filed:
May. 04, 2000
Applicant:
Inventors:
Rainer Kober, Darmstadt, DE;
Sven Petzold, Wiesbaden, DE;
Assignee:
Mannesmann VDO AG, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/504 ;
U.S. Cl.
CPC ...
G01N 2/504 ;
Abstract
A method and measuring device intended for a window-cleaning system of a motor vehicle, wherein the freezing temperature is determined by continuous cooling of a representative partial volume of the liquid inside a chamber. For this purpose, measurements are made of the temperature while the liquid is cooled, which first drops in accordance with the heat dissipation until the start of the phase change initiating the freezing, and in the process leads the heat of solidification released to a temporary temperature plateau. The freezing temperature can be reliably determined in this way for each chemical composition of the liquid.