Patents by Inventor Mark D. Aler

Mark D. Aler 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: 6348790
    Abstract: A leadless motor rotation detector apparatus for determining the direction of shaft rotation of a motor providing a fluctuating magnetic field when rotating includes: at least two sensors separated a predetermined distance from one another. Each sensor senses the magnetic field and generates a corresponding sensor signal having an amplitude and phase associated with said sensed magnetic field. A processor is responsive to the sensor signals, and compares temporal aspects associated with the relative phase of each of the sensor signals to determine a leading or lagging signal. The leading or lagging signal is associated with a corresponding one of the at least two sensors and is indicative of the direction of motor rotation.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: February 19, 2002
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Mark D. Aler, Jin H. Gu