Patents by Inventor Raimo Malkki

Raimo Malkki 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: 4892622
    Abstract: A method of and arrangement for resisting formation of undulations in a fiber/water mixture supplied onto a forming wire at an open planar wire section of a paper-making machine include establishing over the wire an air curtain extending over the full breadth thereof, in the region of which the air mass upon the wire is set in motion. The direction of movement of the air mass is the same as the traveling direction of the wire, and the velocity of the air substantially equals the speed of the wire. The air curtain commences on the planar wire section, in the machine direction, only at a given distance from a lip slice of a headbox of the machine, and the air curtain extends along the traveling direction of the web over the planar wire section over a given distance.
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: January 9, 1990
    Assignees: Valmet Oy, Kymmene Oy
    Inventors: Raimo Malkki, Paavo Jaatinen, Timo Haverinen, Pekka Eskelinen, Juhani Jokinen, Vesa Vuorinen, Raimo Virta, Martti Salmivaara
  • Patent number: 4634068
    Abstract: A method for controlling paper web reel-up, particularly in a Pope-type reel-up apparatus, wherein a reeling cylinder provides power to a paper web reel being formed on a reeling drum at a nip formed between the periphery of the reeling cylinder and the periphery of the web reel being formed. The reeling operation is begun with the reeling drum held in primary forks. The reeling drum and inner section of the web reel formed on it are removed from the primary forks and delivered to secondary forks in which the final steps of the reeling operation are carried out. The primary and secondary forks are coupled to power equipment by which the loading of the power-transmitting nip is generated.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: January 6, 1987
    Assignees: Valmet Oy, Oy Kaukas AB
    Inventors: Raimo Malkki, Antti Kuisma, Matti Verkasalo