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:
Jul. 02, 2002
Filed:
Nov. 10, 2000
Applicant:
Inventors:
Anthony M. Di Tommaso, Cranberry Township, PA (US);
Kevin Dowdell, Pittsburgh, PA (US);
Assignee:
ABB Automation Inc., Wickliffe, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 2/702 ;
U.S. Cl.
CPC ...
G01R 2/702 ;
Abstract
An event marker is generated from the periodic input voltage received from the notch in a shaft of a rotating machine. Positive and negative peak voltages each attenuated by ½ are detected from the periodic input voltage. The attenuated detected positive and negative peak voltages are combined to provide a bias voltage which is subtracted from the periodic input voltage to give an output voltage representative of the event marker.