Patents by Inventor David B. Fork

David B. Fork 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).

  • Nut having a visual indicator
    Patent number: 8591059
    Abstract: A nut is disclosed including a body having a visual indicator coupled thereto and integral therewith. The visual indicator provides a visual indication of a stress state of the body of the nut.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: November 26, 2013
    Assignee: Rexnord Industries, LLC
    Inventors: Marlon R. Casey, David B. Fork, Jesse Arthur Nordgren
  • NUT HAVING A VISUAL INDICATOR
    Publication number: 20100033965
    Abstract: A nut is disclosed including a body having a visual indicator coupled thereto and integral therewith. The visual indicator provides a visual indication of a stress state of the body of the nut.
    Type: Application
    Filed: October 8, 2009
    Publication date: February 11, 2010
    Inventors: Marlon R. Casey, David B. Fork, Jesse Arthur Nordgren
  • CONVEYOR DRIVE ASSEMBLY AND METHOD OF OPERATION
    Publication number: 20040129538
    Abstract: A conveyor drive assembly including an elongated shaft having a first and second end and method of operating the conveyor drive assembly which reliably controls the speed of each end of the drive shaft and minimizes unequal loading of the conveyor belt. The method includes detecting the rotational position of the first end of the shaft, detecting the rotational position of the second end of the shaft, determining the rotational position of one of the first and second ends relative to the other of the first and second ends, and then rotationally driving at least one of the first and second ends of the shaft to maintain the rotational position of one of the first and second ends relative to the other of the first and second ends within a predetermined range. Advantageously, the present invention provides a conveyor drive assembly for use with wide conveyors which reliably controls the speed of each end of the drive shaft and minimizes unequal loading of the conveyor belt.
    Type: Application
    Filed: January 7, 2003
    Publication date: July 8, 2004
    Inventors: James C. Stebnicki, William J. Bolhuis, David B. Fork
  • Conveyor drive assembly and method of operation
    Patent number: 6758327
    Abstract: A conveyor drive assembly including an elongated shaft having a first and second end and method of operating the conveyor drive assembly which reliably controls the speed of each end of the drive shaft and minimizes unequal loading of the conveyor belt. The method includes detecting the rotational position of the first end of the shaft, detecting the rotational position of the second end of the shaft, determining the rotational position of one of the first and second ends relative to the other of the first and second ends, and then rotationally driving at least one of the first and second ends of the shaft to maintain the rotational position of one of the first and second ends relative to the other of the first and second ends within a predetermined range. Advantageously, the present invention provides a conveyor drive assembly for use with wide conveyors which reliably controls the speed of each end of the drive shaft and minimizes unequal loading of the conveyor belt.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: July 6, 2004
    Assignee: Rexnord Industries, Inc.
    Inventors: James C. Stebnicki, William J. Bolhuis, David B. Fork