Patents by Inventor Alden D. Pritchard

Alden D. Pritchard 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).

  • Sludge dehydrating processor for converting sludge including organic substance into resources of low water content
    Patent number: 7513061
    Abstract: There has been achieved a sludge dehydrating processor with less mechanical operation and with satisfactory dehydrating efficiency and heating efficiency. In order to process and convert sludge including an organic substance into solid fertilizer, a heating treatment zone for feeding and sterilizing an object to be treated and a dehydrating treatment/retrieving zone for separating water from the object to be treated and retrieving a treated object are provided. In the heating treatment zone, induction heating for efficiently heating the object to be treated without rotating a kiln body is introduced. In the dehydrating treatment/retrieving zone, a vortex air current producing mechanism for efficiently drying the object to be treated without rotating a dehydrating treatment chamber is introduced.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: April 7, 2009
    Assignees: Dai-Ichi High Frequency Co., Ltd., Bapic Incorporated
    Inventors: Kotaro Hirayama, Alden D. Pritchard
  • Sludge dehydrating processor for converting sludge including organic substance into resources of low water content
    Publication number: 20070272626
    Abstract: There has been achieved a sludge dehydrating processor with less mechanical operation and with satisfactory dehydrating efficiency and heating efficiency. In order to process and convert sludge including an organic substance into solid fertilizer, a heating treatment zone for feeding and sterilizing an object to be treated and a dehydrating treatment/retrieving zone for separating water from the object to be treated and retrieving a treated object are provided. In the heating treatment zone, induction heating for efficiently heating the object to be treated without rotating a kiln body is introduced. In the dehydrating treatment/retrieving zone, a vortex air current producing mechanism for efficiently drying the object to be treated without rotating a dehydrating treatment chamber is introduced.
    Type: Application
    Filed: May 26, 2006
    Publication date: November 29, 2007
    Applicants: DAI-ICHI HIGH FREQUENCY CO., LTD., BAPIC Incorporated
    Inventors: Kotaro Hirayama, Alden D. Pritchard