Patents by Inventor Risto Huhta-Koivisto

Risto Huhta-Koivisto 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).

  • Apparatus and method for aeration/mixing of water
    Patent number: 7644909
    Abstract: The aeration system is for aeration and/or mixing of water, which system has at least one aeration unit that has a pump/propeller inside a feed pipe. The feed pipe, to which the water to be aerated, is sucked from beneath. The aeration system has the feed pipe expanding in the upper part of the aeration unit to a conical space working as a nozzle, via which the water continues its way to at least one annular opening.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: January 12, 2010
    Assignee: Waterix Oy
    Inventors: Risto Huhta-Koivisto, Esko Huhta-Koivisto
  • APPARATUS FOR THE COOLING, CONDENSATION; AERATION AND/OR MIXING OF WATER
    Publication number: 20090014376
    Abstract: The apparatus is used for the cooling and/or condensation and/or aeration and/or mixing of water. The apparatus has a shaft and a propeller to withdraw water from below and feed the water upwardly. The propeller is surrounded by a pipe through which the water withdrawn by the propeller flows upwardly. The inner diameter of the pipe is considerably larger than the diameter of the propeller, a flange to guide water to the sides, and a motor that rotates the propeller.
    Type: Application
    Filed: October 18, 2006
    Publication date: January 15, 2009
    Inventor: Risto Huhta-Koivisto
  • Apparatus and method for aeration/mixing of water
    Publication number: 20070063362
    Abstract: The aeration system is for aeration and/or mixing of water, which system has at least one aeration unit that has a pump/propeller inside a feed pipe. The feed pipe, to which the water to be aerated, is sucked from beneath. The aeration system has the feed pipe expanding in the upper part of the aeration unit to a conical space working as a nozzle, via which the water continues its way to at least one annular opening.
    Type: Application
    Filed: January 26, 2005
    Publication date: March 22, 2007
    Inventors: Risto Huhta-Koivisto, Esko Huhta-Koivisto