Patents by Inventor Everett James Henderson

Everett James Henderson 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).

  • Automatic control system and method for a machine used for excavating drifts, tunnels, stopes, or caverns
    Patent number: 5938288
    Abstract: An automatic control of the operation of a machine used for excavating drifts, tunnels, stopes, caverns or the like of a predetermined profile having a rotatable head (10) and cutting arms (14, 16) mounted on the head for rotation therewith, extending in the direction of excavation with at least one cutting arm (14, 16) being radially pivotable. The angular position (.phi.) of the head (10) is continuously measured and the output signals from these measurements are processed by the computer (44) which controls the angular positions of the head and of the arms according to a predetermined profile code or program stored in the computer memory for cutting the predetermined profile. Additional sensors (54,56) may be provided to control other parameters such as RPM of the rotating head, the force exerted on the arms, the positioning of the machine and the like.
    Type: Grant
    Filed: September 5, 1997
    Date of Patent: August 17, 1999
    Assignees: HDRK Mining Research Limited, WIRTH Maschinen-und Bohrgerate-Fabrik GmbH
    Inventors: Jacques Andre Saint-Pierre, Everett James Henderson, Jeffrey Nicholas Repski, Guy Chevrette, Peter Heinrich Hennecke, Wilfried Piefenbrink, Werner Hensgens