Patents by Inventor Hannu Malkia

Hannu Malkia 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: 4738197
    Abstract: The invention relates to a method for accomplishing smoothness and glaze to paper or board webs in a calender by leading a web through hot nips which are formed between cooperating rolls of different hardnesses and having adjustable temperatures, and where a gradient calendering of the web based on the temperature difference between the web and the rolls is brought about. In order to increase the efficiency of the gradient calendering and in order to achieve a suitable temperature difference between the web and the heated rolls, the temperature of the web is arranged to be adjustable before the web enters the hot nip.
    Type: Grant
    Filed: November 15, 1985
    Date of Patent: April 19, 1988
    Assignee: Oy Wartsila Ab
    Inventor: Hannu Malkia
  • Patent number: 4642164
    Abstract: A method for the moistening of an endless web moving in a processing device, wherein the moistening substance is an evaporated fluid condensated on the web and said web is treated with a corresponding steam substance prior to this moistening. The method includes steps for supplying the evaporated fluid in a bag-like member formed by the web, the bag-like member being supported by an external member. The supply of the substance is carried out by means of a steamer appliance arranged transverse to the web. The method includes steps for adjusting the specific property of the steam substance in accordance to specific values measured from the web.
    Type: Grant
    Filed: February 4, 1985
    Date of Patent: February 10, 1987
    Assignee: Oy Wartsila Ab
    Inventors: Hannu Hanhikoski, Lauri Kalliola, Hannu Malkia