Patents by Inventor Ross McEllhiney

Ross McEllhiney 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).

  • Dense phase particulate conveying system and method with continuous air leakage management
    Patent number: 5813801
    Abstract: A continuous dense phase conveying system and method regulates and modulates the volume of gas flowing at a low velocity within a material conveying pipe. In response to air volume leakage through a rotary airlock valve, a controller adjusts a flow control valve to maintain the volume of air for conveying at a selected level. The flow control valve has a venturi-shaped output section. The flow control valve is more than 90% efficient (e.g., less than 10% pressure drop across the valve) and has an output that varies linearly, over a wide range, with adjustment of the valve.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: September 29, 1998
    Assignee: Mac Equipment, Inc.
    Inventors: Richard E. Newbolt, Ross McEllhiney