Patents by Inventor Josip Zvonkovic

Josip Zvonkovic 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).

  • Piston for an internal combustion engine and method for its production
    Patent number: 7921555
    Abstract: A piston for an internal combustion engine has annular cooling passage arranged in the vicinity of the piston crown and radially on the outside, which, in those regions of the pin bosses which lie close to the boss holes, has boss cooling passages which are connected to the cooling passage and are intended for improved cooling of the pin bosses.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: April 12, 2011
    Assignee: Mahle International GmbH
    Inventors: Arnold Benz, Helmut Kollotzek, Markus Leitl, Sven Schilling, Ernst Limbach, Josip Zvonkovic
  • Piston for an internal combustion engine
    Patent number: 7900551
    Abstract: A piston for an internal combustion engine has an annular cooling channel provided with oil admission boreholes and oil discharge boreholes, the oil discharge boreholes being oriented in the direction of the bolt hubs for the cooling thereof.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: March 8, 2011
    Assignee: Mahle International GmbH
    Inventors: Arnold Benz, Helmut Kollotzek, Markus Leitl, Sven Schilling, Ernst Limbach, Josip Zvonkovic
  • Piston for an Internal Combustion Engine and Method for its Production
    Publication number: 20090025550
    Abstract: A piston for an internal combustion engine has annular cooling passage arranged in the vicinity of the piston crown and radially on the outside, which, in those regions of the pin bosses which lie close to the boss holes, has boss cooling passages which are connected to the cooling passage and are intended for improved cooling of the pin bosses.
    Type: Application
    Filed: December 15, 2006
    Publication date: January 29, 2009
    Inventors: Arnold Benz, Helmut Kollotzek, Markus Leitl, Sven Schilling, Ernst Limbach, Josip Zvonkovic
  • Piston for an Internal Combustion Engine
    Publication number: 20090007776
    Abstract: A piston for an internal combustion engine has an annular cooling channel provided with oil admission boreholes and oil discharge boreholes, the oil discharge boreholes being oriented in the direction of the bolt hubs for the cooling thereof.
    Type: Application
    Filed: December 15, 2006
    Publication date: January 8, 2009
    Inventors: Arnold Benz, Helmut Kollotzek, Markus Leitl, Sven Schilling, Ernst Limbach, Josip Zvonkovic
  • Piston for an internal combustion engine
    Patent number: 7305960
    Abstract: The invention relates to a piston for an internal combustion engine, which comprises two boss bores that have respective outer areas with an oval cross-section that points on one side in the direction of the piston head. The great axis of the ovality is parallel to the piston axis and the degree of ovality increases towards the outer end of the boss bores.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: December 11, 2007
    Assignee: Mahle GmbH
    Inventor: Josip Zvonkovic
  • Piston for an internal combustion engine
    Publication number: 20060042584
    Abstract: The invention relates to a piston for an internal combustion engine, which comprises two boss bores that have respective outer areas with an oval cross-section that points on one side in the direction of the piston head. The great axis of the ovality is parallel to the piston axis and the degree of ovality increases towards the outer end of the boss bores.
    Type: Application
    Filed: July 8, 2003
    Publication date: March 2, 2006
    Inventor: Josip Zvonkovic
  • Cooled plunger piston for internal combustion engines
    Patent number: 5065706
    Abstract: A cooled piston plunger for internal combustion engines having a separable piston head and piston shaft, wherein cooling oil is injected into an outer annular space in the piston head and distributed by oil collecting pockets of different sizes arranged in opposite relationship within the annular space at the upper end of the piston shaft to thereby uniformly distribute the desired cooling effect around the circumference of the piston head.
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: November 19, 1991
    Assignee: Mahle GmbH
    Inventor: Josip Zvonkovic