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:
Mar. 11, 2014
Filed:
Aug. 29, 2011
Andrew J. Farah, Troy, MI (US);
David E. Milburn, Highland, MI (US);
Barbara A. Carter, Shelby Township, MI (US);
Andrew J. Farah, Troy, MI (US);
David E. Milburn, Highland, MI (US);
Barbara A. Carter, Shelby Township, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An electrical charging system is provided, and includes a voltage supply and a conductive coupling element. The conductive coupling element includes a pilot circuit, a resistance element, a light-emitting diode ('LED'), and a switching element. The pilot circuit has a primary control contact and a ground contact. The pilot circuit is configured to be in communication with and receive voltage from the voltage supply. The pilot circuit is configured for supplying a control pilot voltage. The resistance element is electrically connected to the ground contact. The resistance element includes a resistance value. The LED is electrically connected to the resistance element and the ground contact, and has a forward voltage drop. The switching element is actuated to selectively connect the resistance element and the LED element to the primary control contact.