Patents by Inventor Roland E. Lilja

Roland E. Lilja 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).

  • Felt comprising a loop seam for use in the press section of papermaking machines and a method of manufacturing such felts
    Patent number: 4601785
    Abstract: A felt for use in the press section of papermaking machines. The felt consists of a woven base preferably of two layers of threads extending in the machine direction of the felt and cross-machine direction threads interconnect the machine-direction threads, the woven base having a batt needed onto at least one of its faces. The felt is manufactured to be installed in flat form but after its installation in the machine its ends are joined together to form an endless cloth with the aid of a seam known per se. A flap of the batt or batts is arranged to cover the seam area. The invention also concerns a method of manufacturing and installing the felt in the press section of papermaking machines.
    Type: Grant
    Filed: October 27, 1983
    Date of Patent: July 22, 1986
    Assignee: Albany International Corp.
    Inventors: Roland E. Lilja, Sven B. Nilsson