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:
Apr. 25, 1989
Filed:
May. 20, 1987
Applicant:
Inventor:
Philippe Ory, Ittenheim, FR;
Assignee:
Bendix Electronics S.A., Toulouse, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
364509 ; 36457101 ; 73295 ;
Abstract
The invention belongs to the field of dimensional metrology. The process according to the invention makes use of a hot wire sensor (1) passing through the free surface of the liquid. The wire is heated by a joule effect up to a temperature To. The supply to the wire is then interrupted for a predetermined time interval .tau.. The current passing through the wire at the two instants forming the bounds of this interval is determined by means of an A/D converter (3) which feeds a control and computing unit (4). From these current measurements this unit derives a value which represents the liquid level.