Patents by Inventor Robert Fairnington

Robert Fairnington 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).

  • Gear hobbing machines
    Patent number: 4082031
    Abstract: In a gear hobbing machine, the combination of a support, a rotatable hob, a slide mounting the hob for axial shifting on the support, a stepping motor operatively connected to the slide, electronic means operative at the conclusion of a hobbing cycle to apply drive pulses to the motor and thereby to cause the motor to impart a predetermined axial movement to the slide in response to each pulse, a subtractive counter for counting the pulses applied to the motor and means for stopping the motor when the count in the counter is reduced to zero.
    Type: Grant
    Filed: July 7, 1976
    Date of Patent: April 4, 1978
    Assignee: Charles Churchill Limited
    Inventors: Brian Hodgson, Robert Fairnington, Malcolm Thorneycroft, Ronald Malcolm Grant