Patents by Inventor Gerhard Struth

Gerhard Struth 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: 5700188
    Abstract: A coated abrasive belt with an abrasive grain layer on one side of a flexible substrate. The substrate comprises a longitudinal strength layer (4, 5) and a transverse strength layer (6, 7). The edges of successive coated abrasive belt portions are adhesively bonded directly to one another by the use of a recess formed at least in the transverse strength layer. Adhesive bonding takes places one a connecting face (10) which runs approximately in the longitudinal direction and which reaches at least near to the longitudinal strength layer (4, 5). One of the two portions (2) carries the grain layer (14) on its longitudinal strength layer (4) and the other carries it on its transverse strength layer (7).
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: December 23, 1997
    Assignee: Hermes Schleifmittel GmbH
    Inventors: Eckart Uhlmann, Gerhard Struth