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:
Sep. 10, 1996
Filed:
Mar. 02, 1994
Applicant:
Inventors:
Gary W Box, Golden Valley, MN (US);
Michael D Elberson, Elm Grove, WI (US);
Assignee:
Graco Inc., Golden Valley, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
73261 ; 364510 ; 7460 / ; 7386177 ;
Abstract
An apparatus for measuring volume flow through a gear-type flowmeter, having a magnetic sensor affixed to the flowmeter to detect incremental movement of the flowmeter teeth. The sensor is connected to an analog-to-digital converter and computer processor, which receives and stores samples of the sensor signals. The samples are compared with subsequently received samples to derive relative gear positions and to calculate volume flow based on the relative gear positions. The samples may also be analyzed and compared with previous samples to detect flowmeter wear and wobble conditions.