Patents by Inventor Helfried Crede

Helfried Crede 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).

  • Process for the recovery of energy and in particular for the recovery of heat on the heat pump principle
    Patent number: 4192146
    Abstract: A body of still water is confined in heat exchange with one or more ambient heat sources whose temperature is usually above but may drop near 0.degree. C. Heat is withdrawn from the body according to the heat-pump principle. If the temperature of the heat sources drops near zero the withdrawal of heat from the body results in the formation of ice in the body and the latent heat of fusion liberated during the ice formation is also withdrawn, so that the time periods during which the temperature of the ambient sources is near 0.degree. C. can be bridged. When the temperature of the ambient sources rises again their heat is used to re-melt the ice in the body of water.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: March 11, 1980
    Inventor: Helfried Crede