Patents by Inventor Michael Field Kaufman

Michael Field Kaufman 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).

  • Shaft feedback sensor error detection
    Patent number: 7263453
    Abstract: Methods and apparatus for detecting a sensor angle error in a system in which a measured quantity is determined on the basis of a phase of a signal. A signal derived from the measurement of multiple sensors is ascribed to a vector in a two-dimensional space, and a norm is calculated characterizing that vector. A value is calculated characterizing variation of that norm over a specified period of time and that value is compared with a threshold in order to identify a sensor fault.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: August 28, 2007
    Assignee: DEKA Products Limited Partnership
    Inventors: Michael Thomas Gansler, Michael Field Kaufman, Soundararajan Manthiri, David W. Robinson, Jason M. Sachs