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:
Feb. 07, 2012
Filed:
Feb. 11, 2009
Stephen a Long, Carmel, IN (US);
David R Trainer, Derby, GB;
Lihua HU, Rugby, GB;
Huw L Edwards, Derby, GB;
Stephen A Long, Carmel, IN (US);
David R Trainer, Derby, GB;
Lihua Hu, Rugby, GB;
Huw L Edwards, Derby, GB;
Rolls-Royce PLC, London, GB;
Abstract
An earthing arrangement for a DC electrical system (), the electrical system () comprises a plurality of earthing points (A,B,C) and each earthing point (A,B,C) is directly and permanently connected to earth () by a high impedance connection (A,B,C). Each earthing point (A,B,C) is selectively connectable to earth () in electrical parallel with the high impedance connection (A,B,C) by a solid connection (A,B,C) and a switch (A,B,C). In first mode of operation the switch (A) between the earthing point (A) and the earth () of only one of the plurality of earthing points (A,B,C) is closed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile