Patents by Inventor John N. Hallinan

John N. Hallinan 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).

  • Vacuum belt press dryer
    Patent number: 5426864
    Abstract: A belt dryer for dewatering fine particle suspensions includes a continuous conveyor belt with a slotted vacuum pipe disposed beneath a dewatering station, a support below the conveyor belt adjacent the dewatering station immediately downstream of the slotted pipe, and a press roll above the conveyor belt and adapted to exert pressure on the support bar to create an even film of suspension over the slot which facilitates extraction of filtrate.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: June 27, 1995
    Inventors: Henry V. Svehaug, John N. Hallinan