Patents by Inventor Paul H. Persohn

Paul H. Persohn 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).

  • Device for the protection against freezing of installations for the storage or the supply of a freezing liquid, in particular water
    Patent number: 4798239
    Abstract: A device for protecting installations for the storage or supply of a freezing liquid, in particular water, against freezing, comprising at least one heat tube or heat pipe having one end placed in the ground at a distance from the surface sufficient so that the temperature at this location is always above 0.degree. C., the end being equipped on the outside with a fin type heat recovery system or the like, and on the inside with a system for the distribution of the condensate drip, while the other end of the heat pipe is laid out and arranged so that it is located in the immediate vicinity of the part of the installation exposed to the risk of freezing, and the application of the device to installations for the storage and distribution of water.
    Type: Grant
    Filed: January 6, 1984
    Date of Patent: January 17, 1989
    Inventors: Paul H. Persohn, Philippe Persohn