Patents by Inventor Ralph R. Torning

Ralph R. Torning 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).

  • Heating shelf
    Patent number: 4517446
    Abstract: A heating device designed to be used within a refrigerated environment is provided with at least a first plate which is electrically insulated from an underlying resistance heater circuit. Plural insulating layers beneath the resistance heater reflect heat back toward the plate. The entire assembly is sealed against moisture.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: May 14, 1985
    Assignee: Safeway Products Inc.
    Inventor: Ralph R. Torning