Patents by Inventor Leif Lemmeke

Leif Lemmeke 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).

  • Method for combined utilization of heat-conveying media such as ground water or surface water or the like as a heat source
    Patent number: 4509680
    Abstract: The present invention relates to a method for combined utilization of heat-conveying media, such as ground water or surface water or the like, as a heat source comprising a heat store 5 in the ground water reservoir 2 and a heat exchange device 4 equipped with attendant elements. The method is characterized in that water is removed from a watercourse, lake or sea 1 during the summer and this water is then conveyed to a heat exchange device 4 where the heat is transferred to the ground water which is caused to circulate in a closed system, the heat store 5 in the ground water reservoir 2 thus being charged, following which the heated ground water is removed from the heat store 5 during the remainder of the year in time with variations in the heat requirement as the ground water is caused to circulate via a heat exchange device 3 so that the heat store 5 in the reservoir 2 is discharged and stored heat is given off.
    Type: Grant
    Filed: August 17, 1982
    Date of Patent: April 9, 1985
    Inventor: Leif Lemmeke