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. 07, 2011
Filed:
Dec. 03, 2008
Applicants:
Charles R. Willcox, Eden Prairie, MN (US);
Robert C. Hedtke, Young America, MN (US);
Liangju LU, Eden Prairie, MN (US);
Inventors:
Charles R. Willcox, Eden Prairie, MN (US);
Robert C. Hedtke, Young America, MN (US);
Liangju Lu, Eden Prairie, MN (US);
Assignee:
Rosemount Inc., Eden Prairie, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01L 9/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A pressure sensor includes a fill tube which is arranged to couple to a process pressure. A sensor is coupled to the fill tube and is configured to measure pressure of fluid in the fill tube as a function of a change of a physical property of the fill tube. Circuitry is provided to measure pressure using the pressure sensor, and to measure pressure based upon the change of the physical property of the fill tube.