Patents by Inventor Hermann Wolfrum

Hermann Wolfrum 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: 6083857
    Abstract: Described is a surface element (10) which is provided for controlledly transporting moisture and for the storage of moisture and which has an air-permeable carrier (14) provided with an adsorbent. The surface element (10) also has an absorbent, moisture-storing fleece layer (12), wherein the adsorber carrier (14) and the fleece layer (12) are connected together in areal relationship by needling (16) to give an air-permeable composite material (22; 22'). The needling (16) is oriented from the fleece layer (12) towards the adsorber carrier (14). The fiber barbs (18) of the needling (16) extend from the fleece layer (12) to the adsorber carrier (14) and through the adsorber carrier (14). The fiber barbs (18) provide a wick action for the moisture, whereby moisture transport to the fleece layer (12) is optimized. Particularly upon saturation of the fleece layer (12) excess moisture is stored in the adsorbent of the adsorber carrier (14).
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: July 4, 2000
    Assignee: Helsa-Werke Helmut Sandler GmbH & Co. KG
    Inventors: Kerstin Bottger, Regina Hoffmann, Peter Stocker, Hermann Wolfrum