Patents Assigned to Kemi Oy
  • Lump peat machine
    Patent number: 4192088
    Abstract: A lump peat machine mills peat by means of a rotating cutter which delivers the peat to a tube containing a screw conveyor for expression through a nozzle onto the ground. The cutter is raised and lowered through means of a hollow arm supporting the cutter at one end and mounted on the tube by means of an encircling bearing at the other end. The power train for the cutter is positioned within the hollow arm.
    Type: Grant
    Filed: March 2, 1978
    Date of Patent: March 11, 1980
    Assignee: Kemi Oy
    Inventor: Tapio Saalasti
  • Method of curing plastic raw materials impregnated in a porous stuff such as wood
    Patent number: 4049850
    Abstract: Wood is impregnated with a resin forming liquid, the impregnated wood is placed into a pressure vessel, and a medium of high heat capacity, such as steam, is introduced into the pressure vessel. The medium is heated above its boiling point to start curing the resin forming liquid, the heated medium cooling down at least to its phase transition temperaure as it delivers heat, and interrupting the introduction of the medium into the vessel whereby the medium is condensed on the surfaces of the impregnated wood and functions as a coolant.
    Type: Grant
    Filed: May 21, 1975
    Date of Patent: September 20, 1977
    Assignee: Kemi Oy
    Inventor: Heikki Pentti