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. 18, 2007
Filed:
Sep. 23, 2003
Applicant:
Michael D. Flasza, Schaumburg, IL (US);
Inventor:
Michael D. Flasza, Schaumburg, IL (US);
Assignee:
Magnetrol International, Inc., Downers Grove, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 3/08 (2006.01); G08C 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A loop powered process instrument comprises a control circuit measuring a process variable and developing a control signal representing the process variable. An output circuit for connection to a two-wire process loop controls current on the loop in accordance with the control signal. A power supply circuit is connected to the output circuit and the control circuit for receiving power from the two-wire process loop and supplying power to the control circuit. The power supply comprises cascaded charge pump circuits.