Polyphase A.c. Supply Patents (Class 314/31)
  • Patent number: 7557510
    Abstract: A bridge for crossing a passage of a navigation channel includes a section in the form of a single span, which may be displaced by vertical translation between a base position spanning the passage, in which the span rests on fixed support sections of the bridge, and a raised position, for opening the passage, and a support structure for the span on displacement of the span, and a drive for lifting the span. The bridge has only one support structure, with the drive, located on one side of the passage to be spanned.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: July 7, 2009
    Assignee: Societe Europeenne d'Ingenierie Mecanique-Eurodim
    Inventor: Jean-Pierre Ghilardi