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:
Jun. 24, 2003
Filed:
Sep. 26, 1996
Applicant:
Inventor:
Frederick Lloyd Lichtenfels, II, Vergennes, VT (US);
Assignee:
Simmonds Precision Products, Inc., Vergennes, VT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F 2/328 ;
U.S. Cl.
CPC ...
G01F 2/328 ;
Abstract
Apparatus for determining liquid level in a container, wherein the container can be subjected to attitude variations, comprising a plurality of transducers for emitting acoustic energy into the liquid in a plurality of predetermined directions towards the liquid surface from a position below the liquid surface and for receiving echoes; and control electronic for determining liquid level based on echo amplitude and time delay between the emissions and detection of the echoes.