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:
Aug. 11, 1987
Filed:
Dec. 05, 1985
Applicant:
Inventors:
Guy Bourdon, Le Chesnay, FR;
Dominique Lampin, Fontenay-aux-Roses, FR;
Assignee:
L'Air Liquide, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F / ; G01F / ;
U.S. Cl.
CPC ...
73-3 ; 73204 ;
Abstract
The flowmeter comprises a variable gain amplifier (1) whose input is connected to ground through a resistor (4) of constant resistance of low value relative to the input impedance of the amplifier, the thermoresistant element (3) being connected between the input and the output of the variable gain amplifier (1) and means (2) being provided for adjusting the value of the gain of the amplifier in such manner as to obtain the desired value of the current in the thermoresistant element (3) corresponding to the constant temperature it is desired to obtain.