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:
Apr. 05, 2011
Filed:
Apr. 17, 2007
Applicants:
Robert Urman, Schaumburg, IL (US);
James W. Citta, Lombard, IL (US);
Inventors:
Robert Urman, Schaumburg, IL (US);
James W. Citta, Lombard, IL (US);
Assignee:
Wabtec Holding Corp., Wilmerding, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60L 1/00 (2006.01); G05F 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A two-wire adapter circuit comprises a current shunt monitor and a circuit for sensing an abrupt change in the output of the current shunt monitor, a power supply, and a two-wire electrical conduit connecting the power supply to a load via the current shunt monitor, the circuit for sensing the abrupt change in the output of the current shunt monitor configured to output a defined digital signal on a third wire upon sensing the abrupt change.