Patents by Inventor Raimo Lindroos

Raimo Lindroos 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).

  • Drain pipe sterilization
    Patent number: 3985994
    Abstract: The connecting pipe portion between the outlet pipe and the drain pipe of a wash basin is surrounded by an electric heater for heating the interior of the connecting pipe portion to a temperature of about 80.degree. to 100.degree.C to prevent microbes from rising from the drain pipe into the outlet pipe. The connecting pipe portion comprises a metal ring having a heating coil wound thereon and being thermally insulated from the outlet pipe and drain pipe by insulating rings. The outlet pipe may include a conical stub pipe projecting into the ring and spaced therefro by an air gap.
    Type: Grant
    Filed: December 2, 1974
    Date of Patent: October 12, 1976
    Assignee: K. Oras Oy
    Inventors: Kalevi Eloranta, Raimo Lindroos, Jorma Surakka