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. 19, 2011
Filed:
Sep. 04, 2008
Thierry Jobard, Lyons, FR;
Eric Bonin, Jardin, FR;
Thierry Jobard, Lyons, FR;
Eric Bonin, Jardin, FR;
Alstom Transport SA, Levallois-Perret, FR;
Abstract
This device is an electric safety brake which is intended for an electric traction vehicle, in particular a rail vehicle comprising: a rotating electromechanical machine () having permanent magnets having at least one coil with electric terminals (), a resistive braking torque production device (), an electromechanical commutator () which is capable of reliably connecting the electric terminals () of the machine () to the braking torque production device (). It is characterized in that the braking torque production device () comprises, on the one hand, a bipolar assembly () of at least one dissipative resistor, the assembly having two single connection terminals and forming a common terminal bipolar electric output load for all the terminals () of the mechanism and, on the other hand, means () for converting the currents from all the terminals () into a single current which is supplied to the two single terminals of the assembly of at least one dissipative resistor, the conversion means () having no active power switches.