Patents by Inventor Martti J. A. Hakulinen

Martti J. A. Hakulinen 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).

  • Cylinder head of a piston engine
    Patent number: 4524732
    Abstract: In a cylinder head (1) of a piston engine, a thermal insulation component having openings for the accommodation of valve seats, spark plugs, and injection nozzles consists of a circular aluminum titanate plate (2) which is shrink-fitted into a planar circular ring of zirconium oxide (12) gripped or shrink-fitted in the cylinder head. The circular plate (2) of aluminum titanate forms the greatest part of the cylinder head bottom (9).
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: June 25, 1985
    Assignee: Feldmuhle Aktiengesellschaft
    Inventors: Ulf Dworak, Hans Olapinski, Dieter Fingerle, Ulrich Krohn, Martti J. A. Hakulinen, Bengt N. J. Palm
  • Mullite plate
    Patent number: 4519359
    Abstract: In a cylinder head of a piston engine, the surface of the cylinder head facing the combustion chamber is covered by a plate having openings for valves, spark plugs or injection nozzles. The plate consists of mullite containing 2 to 30% by volume of zirconium oxide and/or hafnium oxide embedded therein, plus 0 to 3 mole-percent of oxides of magnesium, calcium or yttrium, with respect to the zirconium and/or hafnium oxide, and of no more than 0.5%, by weight, of other oxidic impurities.
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: May 28, 1985
    Assignee: Feldmuhle Aktiengesellschaft
    Inventors: Ulf Dworak, Hans Olapinski, Dieter Fingerle, Ulrich Krohn, Martti J. A. Hakulinen, Bengt N. J. Palm