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:
Oct. 29, 2002
Filed:
Dec. 03, 1999
Applicant:
Inventor:
Richard L. Thibault, Plainville, MA (US);
Assignee:
The Foxboro Company, Foxboro, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 1/500 ;
U.S. Cl.
CPC ...
G05B 1/500 ;
Abstract
A control system incorporates components that automatically switch information sources in response to actual or potential degradation of information generated by them. Thus, a control system has first and second control components that generate first and second “source” signals, respectively, representing substantially identical or related process control variables. A third control component, which normally processes the first source signal, responds to actual or potential degradation of that signal for processing the second source signal in lieu of the first.