Patents by Inventor Hans-Dieter Ehlermann

Hans-Dieter Ehlermann 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: 4556353
    Abstract: In a process and apparatus for binding books, upper (forward) portions of bookblocks in a vertical position with backs down are gripped by clamps on a conveyor for transporting the bookblocks through successive operating stations. At one operating station a rotating element dipping in a bath of adhesive applies adhesive in transverse strips to backs of bookblocks. At another operating station rollers apply adhesive to lower (rear) portions of first and last pages of the bookblocks. As front and back covers connected by a back are transported, inside up, along a path merging with the path along which said bookblocks are transported, adhesive is applied by rollers or spray heads to outer (forward) portions of the front and back covers. The covers are brought under respective bookblocks and lower (rear) portions of the bookblocks together with the covers are gripped between opposed pressing bars.
    Type: Grant
    Filed: November 10, 1983
    Date of Patent: December 3, 1985
    Inventor: Hans-Dieter Ehlermann