Patents by Inventor James Edward Nichols

James Edward Nichols 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).

  • Patent number: 6452380
    Abstract: A calibration rod (1) with grooved track (2) and a testing apparatus (17) for magnetic rolls that produces an accurate homing location and probe-to-probe reference for repeated test verification at many testing locations. The grooved track calibration rod can be transported to different equipment to verify that equipment is performing similarly, has improved accuracy, has temperature compensation, uses a circumferential drive movement from one end of a roll magnet and verifies angular position from the other end, eliminates the possibility of angular inaccuracy from twisting of the part being measured during clamping and provides for improved accuracy of several degrees. A high order polynomial curve fit of the data is used to determine the true value of the Gauss level being measured during 360 degree revolution. The apparatus takes measurements to accurately measure magnetic differences which define differences in probe operation.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: September 17, 2002
    Assignee: Lexmark International, Inc.
    Inventors: Wayne Gerard Fieseler, Mark Duane Foster, Robert Edward Hackett, Calvin Dale Murphy, James Edward Nichols
  • Patent number: D471375
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: March 11, 2003
    Inventors: James Edward Nichols, III, James Edward Nichols, IV