Patents by Inventor Richard D. Patch

Richard D. Patch 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).

  • Fluidized bed air cooling system
    Patent number: 5222363
    Abstract: A method and apparatus for effecting the cooling of a stream of air or gas by sublimation of dry ice particles utilizes an upwardly directed, variable velocity stream of air to maintain a supply of dry ice particles provided on a moving perforated conveyor in a fluidized bed condition to maximize the rate of sublimation of the dry ice particles. The cooled air may then be employed to effect the rapid and efficient freezing of a plurality of food articles passing through the same insulated chamber as the dry ice particle conveyor is located, or an adjacent insulated chamber.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: June 29, 1993
    Assignee: Carbonic Reserves
    Inventors: Russel G. Allen, Jr., A. Thomas Bradshaw, Richard D. Patch, Clifford H. Collen
  • Airflow core for refrigeration units
    Patent number: D290038
    Type: Grant
    Filed: September 24, 1984
    Date of Patent: May 26, 1987
    Assignee: Dick Patch Industries, Inc.
    Inventors: Richard D. Patch, Lee D. Smith