Patents by Inventor Nicholas Zarkades

Nicholas Zarkades 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).

  • Apparatus for controlling traffic flow along a pathway
    Patent number: 6997417
    Abstract: A railroad crossing gate with a gate assembly. An extendible member slides within an outer member with minimal friction. When the gate is in its open position, gravity retracts the extendible member to hollow member. When the gate is in its blocking position, gravity causes the extendible member to move out of the hollow member to a final blocking position.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: February 14, 2006
    Inventor: Nicholas Zarkades
  • Apparatus for controlling traffic flow along a pathway
    Publication number: 20050139730
    Abstract: A railroad crossing gate with a gate assembly. An extendible member slides within an outer member with minimal friction. When the gate is in its open position, gravity retracts the extendible member to hollow member. When the gate is in its blocking position, gravity causes the extendible member to move out of the hollow member to a final blocking position.
    Type: Application
    Filed: December 31, 2003
    Publication date: June 30, 2005
    Inventor: Nicholas Zarkades