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:
Dec. 09, 1986
Filed:
May. 10, 1985
Applicant:
Inventor:
John A Tavis, Mariposa, CA (US);
Assignee:
Tavis Corporation, Mariposa, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F / ; G01F / ;
U.S. Cl.
CPC ...
73302 ; 73301 ; 73299 ;
Abstract
A high-accuracy system for gaging liquid height in storage tanks. A pair of standpipes are arranged to be pumped to several accurately predetermined liquid levels to enable zero and sensitivity calibration of a differential-pressure transducer which normally monitors the pressure head of a column of liquid in the tank. The entire system is filled with tank liquid (eliminating condensation and vapor bubble problems encountered if the transducer is vented to atmosphere), and sharp-edged standpipes provided to minimize meniscus error when one or both standpipes are completely full.