Patents by Inventor Joseph S. Jondahl

Joseph S. Jondahl 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).

  • Patent number: 4895001
    Abstract: An expandable refrigeration system for use in dispensing products to the public, the system including a base unit with a product containing chamber, a refrigeration system in the base unit and having a compressor and condenser portion and a fan for moving ambient air past the condenser, an evaporator cabinet supported adjacent the refrigeration system having an evaporator therein which is connected to the compressor and condenser of the refrigeration system and a fan for moving air past the evaporator whereby the air is coated, openings through which cooled air from the evaporator is conducted into the base unit product containing chamber, a slave unit having a product containing chamber contiguous with the base unit, first and second ducts communicating the interior of the base unit product containing chamber with the slave unit product containing chamber so that cooled air circulated in the base unit is also circulated in the slave unit allowing the addition of increased product containing space without an
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: January 23, 1990
    Inventor: Joseph S. Jondahl
  • Patent number: 4509450
    Abstract: A sanitary customer attended food dispenser for dispensing individual servings of food with desired amount of sauce (e.g. nachos with molten cheese) involving a windowed enclosure containing a carousel of individual food servings and a centrally located heated reservoir of sauce (molten cheese) actuated by an external pump plunger handle. The enclosure is further equipped with a door for withdrawal of the food serving which indexes the carousel through a rotation equivalent to the advancement by the relative position of one food serving for each time the door is opened and then closed.
    Type: Grant
    Filed: October 25, 1982
    Date of Patent: April 9, 1985
    Inventor: Joseph S. Jondahl