Patents by Inventor Snjezana PRSTOJEVIC

Snjezana PRSTOJEVIC 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 crown having conical valve pocket
    Patent number: 10233865
    Abstract: A piston has a piston crown and a top land extending circumferentially around the piston crown, as well as a combustion bowl and at least one valve pocket machined therein. The valve pocket has a side wall and a bottom, and wherein the side wall extends at an angle of between 110° and 120° from the bottom. A method for forming such valve pockets in the piston crown includes machining the valve pockets with a rotating cutter having an inverted frustoconical shape such that an angle between a bottom of the cutter and a side wall of the cutter amounts to between 110° and 120°.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: March 19, 2019
    Assignee: MAHLE International GmbH
    Inventors: Snjezana Prstojevic, Giang Nguyen
  • PISTON CROWN HAVING CONICAL VALVE SEAT AND METHOD FOR MANUFACTURING A PISTON CROWN HAVING A CONICALLY SHAPED VALVE SEAT
    Publication number: 20180094604
    Abstract: A piston has a piston crown and a top land extending circumferentially around the piston crown, as well as a combustion bowl and at least one valve pocket machined therein. The valve pocket has a side wall and a bottom, and wherein the side wall extends at an angle of between 110° and 120° from the bottom. A method for forming such valve pockets in the piston crown includes machining the valve pockets with a rotating cutter having an inverted frustoconical shape such that an angle between a bottom of the cutter and a side wall of the cutter amounts to between 110° and 120°.
    Type: Application
    Filed: September 30, 2016
    Publication date: April 5, 2018
    Applicant: MAHLE International GmbH
    Inventors: Snjezana PRSTOJEVIC, Giang NGUYEN