Patents by Inventor M. Alvin Heard

M. Alvin Heard 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).

  • Motor velocity control
    Patent number: 4486693
    Abstract: Apparatus for controlling the angular velocity of a motor shaft comprising a memory for storing digital data equivalent to a desired angular velocity curve for the motor shaft, means for determining the actual angular velocity of the shaft, means coupled to the memory and the means for determining the actual angular velocity of the shaft for comparing the actual angular velocity of the shaft with the desired angular velocity according to said curve and a computer coupled to the comparing means and the motor for adjusting the current to the motor whereby the velocity thereof is adjusted according to the comparison to cause said motor to have a velocity corresponding to said curve.
    Type: Grant
    Filed: July 6, 1982
    Date of Patent: December 4, 1984
    Assignee: Contitronix, Inc.
    Inventors: Sharbil Hamati, M. Alvin Heard