Patents by Inventor Stephen D. Duncan

Stephen D. Duncan 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).

  • Quick release holder for a beading of a conveyor belt and method of using quick release holder
    Patent number: 7232030
    Abstract: The present invention is related to quick release holders that grip the beading of a conveyor belt. Due to a holder's unique structure, without the use of tools, the holder can manually be opened to release the beading and the conveyor belt. Conversely, without the use of tools, the holder can also be manually closed to secure the beading.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: June 19, 2007
    Assignee: Transnorm System Inc.
    Inventors: Stephen D. Duncan, Donald K. Wier, John K. Crowley
  • Adjustable shield for a conveyor belt
    Patent number: 7222728
    Abstract: The present invention is related to an adjustable finger guard or shield for a conveyor. The housing's slide can include the combination of a plate, one or more connectors and a rotable bearing's housing. Moving the slide from a first direction to a second directions alters the position of the shaft of the conveying drum driving the conveyor belt.
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: May 29, 2007
    Assignee: Transnorm System Inc.
    Inventors: Donald K. Wier, Stephen D. Duncan
  • Interlocker for a conveyor belt and method of utilizing an interlocker for a conveyor belt
    Patent number: 7131530
    Abstract: The invention is related to drive units for conveyor belts. A flexible rider connected to the belt includes a gear for meshing with a gear of the rotable driver. The meshing of the gears allows the conveyor belt to be pulled about the conveyor.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: November 7, 2006
    Assignee: Transnorm System Inc.
    Inventors: Rick Lee, Stephen D. Duncan