Patents by Inventor N. Duane Smith

N. Duane Smith 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).

  • Shock absorbing tow bar for trolley-type conveyor systems
    Patent number: 6330953
    Abstract: A shock absorbing tow bar for connection between the accumulating trolley and load carriage of a power and free conveyor system is disclosed. The tow bar includes one component that is connectable to the accumulating trolley and another that is connectable to the intermediate trolley of the load carriage. Limited relative shifting is permitted between the components of the tow bar. Moreover, the components are threadably intercoupled so that such relative shifting requires a screwing or unscrewing action that serves to cushion movement between the accumulating trolley and load carriage.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: December 18, 2001
    Assignee: Conveyor Technology Group Inc.
    Inventors: Gareth D. Summa, N. Duane Smith
  • Shock absorbing tow bar for trolley-type conveyor systems
    Patent number: 6330952
    Abstract: A shock absorbing tow bar for connection between the accumulating trolley and load carriage of a power and free conveyor system is disclosed. The tow bar includes one component that is connectable to the accumulating trolley and another that is connectable to the intermediate trolley of the load carriage. Limited relative shifting is permitted between the components of the tow bar. Moreover, the components are threadably intercoupled so that such relative shifting requires a screwing or unscrewing action that serves to cushion movement between the accumulating trolley and load carriage.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: December 18, 2001
    Assignee: Conveyor Technology Group Inc.
    Inventors: Gareth D. Summa, N. Duane Smith
  • Shock absorbing tow bar for trolley-type conveyor systems
    Publication number: 20010030162
    Abstract: A shock absorbing tow bar for connection between the accumulating trolley and load carriage of a power and free conveyor system is disclosed. The tow bar includes one component that is connectable to the accumulating trolley and another that is connectable to the intermediate trolley of the load carriage. Limited relative shifting is permitted between the components of the tow bar. Moreover, the components are threadably intercoupled so that such relative shifting requires a screwing or unscrewing action that serves to cushion movement between the accumulating trolley and load carriage.
    Type: Application
    Filed: July 2, 2001
    Publication date: October 18, 2001
    Inventors: Gareth D. Summa, N. Duane Smith
  • Shock absorbing tow bar for trolley-type conveyor systems
    Publication number: 20010011648
    Abstract: A shock absorbing tow bar for connection between the accumulating trolley and load carriage of a power and free conveyor system is disclosed. The tow bar includes one component that is connectable to the accumulating trolley and another that is connectable to the intermediate trolley of the load carriage. Limited relative shifting is permitted between the components of the tow bar. Moreover, the components are threadably intercoupled so that such relative shifting requires a screwing or unscrewing action that serves to cushion movement between the accumulating trolley and load carriage.
    Type: Application
    Filed: April 11, 2001
    Publication date: August 9, 2001
    Inventors: Gareth D. Summa, N. Duane Smith
  • Shock absorbing tow bar for trolley-type conveyor systems
    Patent number: 6244451
    Abstract: A shock absorbing tow bar for connection between the accumulating trolley and load carriage of a power and free conveyor system includes one component that is connectable to the accumulating trolley and another that is connectable to the intermediate trolley of the load carriage. Limited relative shifting is permitted between the components of the tow bar. Moreover, the components are threadably intercoupled so that such relative shifting requires a screwing or unscrewing action that serves to cushion movement between the accumulating trolley and load carriage.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: June 12, 2001
    Assignee: Conveyor Technology Group, Inc.
    Inventors: Gareth D. Summa, N. Duane Smith