Patents by Inventor Pentti Luukkanen

Pentti Luukkanen 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 for removing the precoat layer of a rotary filter
    Patent number: 9636611
    Abstract: A method associated for treating a precoat on a rotating filtering surface of lime sludge filter including: accumulating a precoat of lime sludge on the filtering surface by rotating the filtering surface in a first direction through a lime sludge slurry; after accumulating the precoat, rotating the filtering surface in an opposite direction to the first direction; while rotating the filtering surface in the opposite direction, spraying a liquid onto the precoat on the filtering surface wherein the spraying is applied to the precoat above a scraper adjacent the filtering surface and the spraying removes at least a portion of the precoat from the filtering surface, and flowing the removed precoat over the scraper and into a basin.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: May 2, 2017
    Assignee: Andritz Oy
    Inventor: Pentti Luukkanen
  • METHOD FOR REMOVING THE PRECOAT LAYER OF A ROTARY FILTER
    Publication number: 20150290566
    Abstract: A method associated for treating a precoat on a rotating filtering surface of lime sludge filter including: accumulating a precoat of lime sludge on the filtering surface by rotating the filtering surface in a first direction through a lime sludge slurry; after accumulating the precoat, rotating the filtering surface in an opposite direction to the first direction; while rotating the filtering surface in the opposite direction, spraying a liquid onto the precoat on the filtering surface wherein the spraying is applied to the precoat above a scraper adjacent the filtering surface and the spraying removes at least a portion of the precoat from the filtering surface, and flowing the removed precoat over the scraper and into a basin.
    Type: Application
    Filed: February 5, 2013
    Publication date: October 15, 2015
    Inventor: Pentti Luukkanen