Patents by Inventor Herman Meier

Herman Meier 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).

  • Tray transport cart having electromagnetic induction heaters for heating meals to be placed on the trays
    Patent number: 5466915
    Abstract: A tray transport cart which accommodates trays for holding dishes for containing meals has a movable cart body with a plurality of tray carriers installed therein. Induction coils are inserted into the tray carriers for generating a local electromagnetic field. The trays hold the dishes which are provided with a current-conducting layer. An HF generator positioned on the cart body cooperates with the induction coils to produce the total inductance of the coils to generate a desired induction current in the current-conducting layer of the dishes, in the range between 32 .mu.H and 76 .mu.H, to maintain the meals contained in the dishes at warm temperatures.
    Type: Grant
    Filed: October 7, 1993
    Date of Patent: November 14, 1995
    Assignee: Berndorf Luzern A.G.
    Inventors: Herman Meier, Martin Witzig