Patents by Inventor John L. Digre

John L. Digre 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).

  • Patent number: 5437237
    Abstract: A continuous pyrolysis system includes an enclosure which receives an influx material at an entrance thereto and discharges a pyrolysate at a discharge therefrom. The entrance directs influx material into the enclosure while evacuating oxygen from the influx material. A conveyor is provided within the enclosure transporting the influx material from the entrance to the discharge. Pyrolysis is caused by a series of heat sources overlying the conveyor belt, the heat sources each including a parabolic reflective surface to enhance radiation heat transfer into the influx material. The pyrolysate is discharged in solid form through an output auger, in liquid form through a liquid outlet and in gaseous form through a gas outlet. The continuous pyrolysis system includes controls to provide a speed of the conveyor belt, completeness of the pyrolysis process, temperature of the heat sources and maintenance of an anaerobic environment within the enclosure.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: August 1, 1995
    Inventor: John L. Digre