Patents by Inventor Bo-Christer Åberg

Bo-Christer Åberg 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: 6743339
    Abstract: Use of an essentially impermeable transfer belt (16) for a soft tissue paper machine for conducting a soft tissue web (1) through a shoe press nip in the press section of the paper machine, and from the shoe press nip to a Yankee cylinder (5) in the dryer section of the paper machine in a closed draw. The Yankee cylinder forms, together with a transfer means (17), a transfer nip for transferring the soft tissue web from the transfer belt to the Yankee cylinder.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: June 1, 2004
    Assignee: Albany Nordiskafilt AB
    Inventors: Göran Nilsson, Bo-Christer Åberg
  • Patent number: 6428874
    Abstract: A resin-impregnated endless belt for a long nip press of the shoe type has a base structure impregnated by a polymeric resin material which renders the belt impermeable to fluids, such as oil, water and air. The polymeric resin material forms layers on the inner and outer sides of the base structure. The inner layer is smooth, but the outer layer has primary grooves for the temporary storage of water pressed from a paper web. The primary grooves are separated by land areas which have secondary grooves extending thereacross to relieve stresses which give rise to flex fatigue and stress cracking.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: August 6, 2002
    Assignee: Albany International Corp.
    Inventors: Desmond J. McGahern, Bo-Christer Åberg
  • Patent number: 6340413
    Abstract: An embossing belt for a paper machine, intended to run through a press section in the paper machine together with a fibrous web and produce an embossment thereof in the press section, and to transfer the embossed fibrous web from the press section directly to and through a transfer means in the dryer section of the paper machine. The embossing belt is essentially impermeable and comprises a rear layer (33) and a web-contacting layer (34), which has a large number of uniformly distributed depressions (35) and, positioned therebetween, surface portions (36) for forming a corresponding relief pattern in the fibrous web passing through the press section.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: January 22, 2002
    Assignee: Albany International AB
    Inventors: Göran Nilsson, Bo-Christer Åberg