Patents by Inventor Antti Kahonen

Antti Kahonen 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).

  • Double doctor for a paper machine and method for adjustment of same
    Patent number: 5021124
    Abstract: The invention concerns a double doctor (10) for a paper machine, comprising the first doctor blade (12) and a second doctor blade (14), which are fitted to scrape the same roll face (T.sub.1). The double doctor (10) includes a first doctor beam (11) and therein a first doctor blade (12) as well as a second doctor beam (13) and therein a second doctor blade (14). The first doctor beam (11) and the second doctor beam (13) are interconnected at their ends by means of end plates (15a, 15b), whereby an opening (C) remains between the doctor beams (11, 13) and the end plates (15a, 15b), through which opening (C) the material or paper web scraped off the roll face (T.sub.1) can be passed freely into a pulper. The invention also concerns a method for adjustment of the double doctor.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: June 4, 1991
    Assignee: Valmet Paper Machinery Inc.
    Inventors: Pekka Turtinen, Antti Kahonen