Patents by Inventor David M. Kopena

David M. Kopena 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).

  • Blowing wool separator method and apparatus
    Patent number: 4447249
    Abstract: Method and apparatus are disclosed for recovering blowing wool from an air stream by introducing the stream out aa drum rotating in a sealed shroud, the speed of rotating be adjusted in response to the pressure differential across the surface of the drum.
    Type: Grant
    Filed: August 16, 1982
    Date of Patent: May 8, 1984
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: David M. Kopena
  • Method and apparatus for separating rolls of web material
    Patent number: 4341003
    Abstract: A method and apparatus for separating rolls of web material of the type where two or more rolls are attached at the side edges thereof comprising passing the first roll between an upper and lower conveyor defining a first path of travel, and simultaneously passing each attached roll between additional upper and lower conveyors defining a path of travel for each attached roll, where the path of travel for each roll is sufficiently vertically separated from its immediately adjacent path that the rolls passing therethrough are separated.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: July 27, 1982
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: David M. Kopena