Patents by Inventor Joachim Grabietz

Joachim Grabietz 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).

  • Hot water heater
    Patent number: 4940024
    Abstract: The formation of bacteria and germs, in particular of legionella during the heating of hot water is prevented by the special cold water outlet inside the hot water heater. In this hot water heater the entire cold water consumption is directed through the hot water heater. At the same time the pressure level in the cold water system and in the hot water system is also the same, whereby the disadvantage of fluctuating mixing temperatures for the consumer is avoided, i.e. at the point of use.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: July 10, 1990
    Assignees: Hans Terhorst, Joachim Grabietz
    Inventor: Joachim Grabietz