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:
Nov. 26, 2002
Filed:
Dec. 13, 1999
Applicant:
Inventors:
Xin Xin Wang, Naperville, IL (US);
Thaddeus A. Niemiro, Lisle, IL (US);
Joseph Vucko, Lemont, IL (US);
James K. Henzl, Worth, IL (US);
Assignee:
Goss Graphic Systems, Inc, Westmont, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01F 1/500 ; B41F 3/102 ;
U.S. Cl.
CPC ...
B01F 1/500 ; B41F 3/102 ;
Abstract
A sensor for detecting the level of circulating fluid in a tank comprises a paddle blade disposed at a particular height and oriented generally radially from a rotating shaft in the tank. A sensing device, such as a strain gauge, is attached to the paddle blade to detect when the paddle blade is in at least one of a normal and a displaced position, thereby indicating that fluid is absent or present at a particular level. Additional sensors may be used in the same tank to provide fluid level feedback at more than one height.