Patents by Inventor Eric Lelaure

Eric Lelaure has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Redundant automation system
    Patent number: 6640314
    Abstract: A redundant automation system including a set of redundant PLCs including of a pair of PLCs each equipped with two communication couplers. The first coupler in the first PLC is connected to the first coupler in the second PLC through a first Ethernet network and the second coupler in the first PLC is connected to the second coupler in the second PLC through a second Ethernet network, connecting them to at least one remote equipment. Each of the PLCs has a hardware address and an IP address, the set of redundant PLCs being accessible from outside by a single IP address assigned to a first normal PLC, and a switching mechanism assigns the address related to normal operation to the second PLC, the IP address of the standby operation being assigned to the first PLC.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: October 28, 2003
    Assignee: Schneider Automation
    Inventors: Eric Lelaure, Michel Meriaux