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, 1996
Filed:
Jun. 10, 1994
Applicant:
Inventors:
David L Schantz, Jr, Ellicott City, MD (US);
Brian A DeAbreu, Bowie, MD (US);
Assignee:
Northrop Grumman Corporation, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60L / ;
U.S. Cl.
CPC ...
307 101 ; 324772 ; 361100 ; 363 56 ;
Abstract
A power bridge for an electric vehicle propulsion system, comprising a switching circuit including first and second switching elements operable between 'on' and 'off' states and a midpoint detector coupled to the switching circuit for detecting a failure of at least one of the first and second switching elements, where the midpoint detector is capable of detecting and isolating a failure when the switching elements are in the 'on' or the 'off' states.