Patents by Inventor Henry B. Delius

Henry B. Delius 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).

  • Constant potential/constant current automatic control system for air-carbon arc metal removal
    Patent number: 4575604
    Abstract: A control system for air-carbon arc metal removal in which the arc is automatically controlled and in which the arc power is produced by either a constant potential or constant current power source. For a constant potential source, the arc current is maintained at a predetermined value by sensing the magnitude of the arc current and for a constant current source the arc voltage is maintained at a predetermined value by sensing the magnitude of the arc voltage. The presence of an arc current above a threshold is sensed for a predetermined interval to provide relative motion between the workpiece carriage and the electrode. If the electrode arc current drops below a predetermined threshold, a low current sensing circuit is actuated. If the arc current remains below the threshold for a predetermined time interval, the carriage travel is terminated. If the arc current remains below the threshold for longer than a predetermined amount of time, the electrode power is turned off.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: March 11, 1986
    Assignee: Arcair Company
    Inventor: Henry B. Delius
  • Constant potential/constant current automatic control system for air-carbon arc metal removal
    Patent number: 4492841
    Abstract: A control system for air-carbon arc metal removal in which the arc is automatically controlled and in which the arc power is produced by either a constant potential or constant current power source. For a constant potential source, the arc current is maintained at a predetermined value by sensing the magnitude of the arc current and for a constant current source the arc voltage is maintained at a predetermined value by sensing the magnitude of the arc voltage. The presence of an arc current above a threshold is sensed for a predetermined interval to provide relative motion between the workpiece carriage and the electrode. If the electrode arc current drops below a predetermined threshold, a low current sensing circuit is actuated. If the arc current remains below the threshold for a predetermined time interval, the carriage travel is terminated. If the arc current remains below the threshold for longer than a predetermined amount of time, the electrode power is turned off.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: January 8, 1985
    Assignee: Arcair Company
    Inventor: Henry B. Delius