Patents Assigned to Stone International PLC
  • Glider doors
    Patent number: 4754997
    Abstract: In a glider door for use in a bus or streetcar with a step within the door, one lower corner of the door panel is cut away so as to clear the step when the door is open, and a subsidiary panel of a size to close the door panel is carried by a lower swing link supporting the door panel so as to close the cut away portion when the door is closed.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: July 5, 1988
    Assignee: Stone International PLC
    Inventor: Derek Thompson-Ashworth