Patents by Inventor Milton H. Johnson

Milton H. Johnson 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).

  • High torque stepping motor
    Patent number: 4127802
    Abstract: The invention provides a high torque bidirectional stepping motor. Toothed rotor and stator assemblies having pole pieces sandwiching annular permanent magnets and solenoid coils, respectively, are disclosed. Pulsing means for activating the motor are also disclosed. Adjacent rotor assemblies are misaligned in disclosed fashion to provide fractional notch stepping in response to sequential control pulses from the pulsing means.
    Type: Grant
    Filed: April 6, 1977
    Date of Patent: November 28, 1978
    Inventor: Milton H. Johnson