Patents by Inventor Herman E. Raskov

Herman E. Raskov 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: 4553025
    Abstract: An insulated electric heating element particularly suitable for use in a hot plate or electric stove is disclosed. The insulated electric heating element (11) includes a unitary two chamber housing (21). The chambers are located one above the other. A U-shaped upper chamber (22) houses a resistive electric heating element (23). A U-shaped lower chamber (24) houses thermal insulation (30). The thermal insulation reduces the heat radiated downwardly and sidewardly and correspondingly increases the heat radiation upwardly by the electric heating element.
    Type: Grant
    Filed: October 3, 1984
    Date of Patent: November 12, 1985
    Inventor: Herman E. Raskov
  • Patent number: 4480176
    Abstract: An insulated electric heating element particularly suitable for use in a hot plate or electric stove is disclosed. The insulated electric heating element includes an insulating member comprising a layer of ceramic insulation surrounding the sides and bottom of the housing that encloses the resistive heating element is disclosed. The ceramic insulation is mounted in the bottom and extends up the sides of a cross-sectionally U-shaped channel. The legs of the channel are formed so as to adhere to the sides of the heating element housing. The ceramic insulation reduces the heat radiated downwardly and sidewardly and, correspondingly, increases the heat radiation upwardly by the electric heating element. The upper edge of the channel legs lie below the upper surface of the heating element housing to avoid creating a gap between the bottom of a vessel (e.g., pot) to be heated and the upper surface of the heating element housing.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: October 30, 1984
    Inventor: Herman E. Raskov