Patents by Inventor David A. Ayers

David A. Ayers 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).

  • Control system for a plurality of stepper motors
    Patent number: 4757245
    Abstract: An apparatus and method for operating a plurality of stepper motors. A controller operates a plurality of sequentially connected stepper motors executing substantially the same motion. The apparatus includes an incremental control feature for generating an alignment signal to step an associated motor a predetermined amount. Once the alignment of all the motors is done all the motors are moved with substantially the same motion.
    Type: Grant
    Filed: January 8, 1987
    Date of Patent: July 12, 1988
    Assignee: Merit Machined Products
    Inventors: David A. Ayers, John F. Dumelle