Patents by Inventor Esa Markkanen

Esa Markkanen 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).

  • Method and device for changing an endless felt
    Patent number: 6517681
    Abstract: Felt changing device and procedure for changing an endless felt, in which procedure an endless felt is placed around rollers. In the procedure, an elongated lifting beam (4) with the endless felt (5) placed around it is attached to the first end (3) of a first roller (1). The fixtures holding the first end of the first roller secured are released and the first end of the roller, supported by the lifting beam, is raised. The felt around the lifting beam is passed under the first roller and around the first roller and the other rollers (2) and the first roller is lowered and secured.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: February 11, 2003
    Assignee: Valmet Corporation
    Inventors: Jorma Koskinen, Esa Markkanen