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:
Mar. 06, 1979
Filed:
Oct. 25, 1977
Applicant:
Inventors:
Ivor Fenne, Greenford, GB;
Paul Lakra, Wembley, GB;
Assignee:
Lucas Industries Limited, Birmingham, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73440 ; 73447 ; 73453 ;
Abstract
A device for indicating changes in the specific gravity of a liquid comprises first and second floats adapted to float on the surface of the liquid, the float having different shapes and/or densities so that the depth of the floats in the liquid varies in accordance with the specific gravity of the liquid and means for producing an electrical signal dependent upon the depth to which the floats are immersed relative to one another.