Patents by Inventor William E. Graul

William E. Graul 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).

  • Apparatus and process for refrigerating materials
    Patent number: 4084387
    Abstract: Material is fed into a revolving drum which has an interior configuration, preferably in the form of a helical blade, to convey the material at a controlled rate through the drum. A low temperature gas, such as nitrogen, is introduced into the drum downstream when viewed in the direction of travel of the material, in a liquid state at a controlled rate through a spray nozzle system, thereby continuously exposing the material to the cooling effect of the gas. A portion of the gas is recirculated from the upstream end to the downstream end of the drum. The material is pre-cooled in the upstream portion of the drum. After exiting from the drum, the material may be crushed or impacted and separated.
    Type: Grant
    Filed: March 11, 1977
    Date of Patent: April 18, 1978
    Assignee: The Union Corporation
    Inventors: John B. Schorsch, William E. Graul, David Barash
  • Apparatus for refrigerating materials
    Patent number: 4033142
    Abstract: Material is fed into a revolving drum which has an interior configuration, preferably in the form of a helical blade, to convey the material at a controlled rate through the drum. A low temperature gas, such as nitrogen, is introduced into the drum downstream when viewed in the direction of travel of the material, in a liquid state at a controlled rate through a spray nozzle system, thereby continuously exposing the material to the cooling effect of the gas. A portion of the gas is recirculated from the upstream end to the downstream end of the drum. The material is pre-cooled in the upstream portion of the drum. After exiting from the drum, the material may be crushed or impacted and separated.
    Type: Grant
    Filed: June 17, 1975
    Date of Patent: July 5, 1977
    Assignee: Union Corporation
    Inventors: John B. Schorsch, William E. Graul, David Barash