Patents by Inventor Walter L. Wisting

Walter L. Wisting 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: 5403608
    Abstract: A method of cooking food which comprises the steps of: providing a pair of spaced apart linearly aligned heating assemblies defining a cooking area and passage therebetween for transport of food to be cooked, heating the heating elements to a degree such that the temperature therebetween is 1200.degree. F. or greater, transporting food to be cooked between the heating elements at a rate sufficient to permit cooking of food, providing a hood over the cooking area with passages therein for collecting and directing heated air from the cooking area at a temperature sufficient to burn off the products of cooking, namely grease and smoke particles, the hood being further provided with outlet openings in the top thereof to permit escape of air from the passages.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: April 4, 1995
    Inventor: Walter L. Wisting
  • Patent number: 5271316
    Abstract: A cooking device which comprises a housing member having open entrance and exit ends, horizontally directed heating elements within the housing define a path for movement of food products, and a cooking area therebetween, a transport mechanism for moving food carriers through the defined path, a plurality of first carrier members are carried on the transport mechanism, the first carrier members are spaced along the length of the transport mechanism, the first carrier members are constructed and arranged to carry second food carrier members thereon between the entrance and exit ends between the cooking elements and drop a second food carrier member at the exit end, a fluid manifold behind each of said cooking elements and extending at least the length of the cooking elements, the cooking elements comprising lengths of porous ceramic material.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: December 21, 1993
    Inventor: Walter L. Wisting
  • Patent number: 5069197
    Abstract: A hood adapted to remove contaminants from incoming airflow comprising a housing member having top, front, back and side walls, and defining a lower liquid sump, and an upper exhaust opening in the top wall, an inlet opening defined in the front wall of the housing member the front wall is inclined inwardly and downwardly, a partition extends between the side walls downwardly from the front wall and has a free end defining an air passage with the back wall leading to a large volume upper portion of the housing, a screen having openings therein extends between the side walls and downwardly from the free end of the partition into the sump, the partition has a dam on the free end thereof having a horizontal upper edge, liquid will overflow the dam on the partition and move across the openings in the screen to the sump, whereby air passing into the inlet opening passes through the liquid moving across the screen and then through the liquid moving across the screen and then through an agglomeration of liquid in th
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: December 3, 1991
    Inventor: Walter L. Wisting
  • Patent number: 4351652
    Abstract: A fume hood removes cooking odors such as grease from the air by providing positive contact with a recyclable water-detergent solution, thus serving to condense and emulsify the grease and thereby remove it. Positive contact with the water is caused by having a water-washed screen across the inlet of the hood, the screen having a mesh designed to cause a close interweaving of the air and water. The air then passes through the remainder of the hood and any remaining grease is removed by turbulent contact of air and water in the passage or along the inner sides of the hood. Through a series of one or more sloping dividers in the exhaust hood, the input recycled water may also create additional "waterfall" washing steps.The unit is maintained substantially at room temperature, even though receiving heated contaminated air, due to heat absorption by water evaporation in the washing process.
    Type: Grant
    Filed: March 12, 1981
    Date of Patent: September 28, 1982
    Inventor: Walter L. Wisting
  • Patent number: 3989488
    Abstract: An air scrubber employing means which cause the air entering the scrubber to follow a circular path is provided for removing solid, liquid and gaseous contaminants from air. Removal is through a liquid contact system in which slow-moving contact with cleaning water is alternated with intimate turbulent contact. The circular motion continues by itself through multiple stages. The circular air flow travels in a generally downward direction through a multiplicity of stages to a water and contaminant receiving tank and then the air and some water are drawn upwardly through an internal co-axial outlet of expanding diameter so that only the air is removed.It will be noted that the scrubbing unit of this invention serves to provide multi-stage contact between the liquid and the contaminated air in which there are alternately slow-moving circular motions followed by high-speed turbulent compressive actions providing for the greatest possible admixture.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: November 2, 1976
    Inventor: Walter L. Wisting