Patents by Inventor Steffen RUDOLPH

Steffen RUDOLPH 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).

  • Rough cast cylinder liner
    Patent number: 10465627
    Abstract: A cylinder liner for internal combustion engines has an outer roughened surface that has particularly good adherence properties. The surface has is covered with protrusions or spines of varying shapes and sizes, which are created by spraying the mold with a coating and then casting the cylinder liner in the mold. The spines are generally worm-shaped, with a length greater than a width, and a large spacing between the spines.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: November 5, 2019
    Assignee: MAHLE International GmbH
    Inventors: Thomas Smith, Steffen Rudolph, Jesús Antonio Magallanes Castañeda
  • Rough cast cylinder liner
    Patent number: 10215128
    Abstract: A cylinder liner for internal combustion engines has an outer roughened surface that has particularly good adherence properties. The surface is covered with protrusions or spines of varying shapes and sizes, which are created by spraying the mold with a coating and then casting the cylinder liner in the mold. The spines are generally conical or needle-shaped, with the bases being larger than the tips. The spines have an aggregate cross-sectional surface area measured at 0.2 mm from a ground cylindrical surface that is between 50-90% of the total ground cylindrical surface area, and an aggregate cross-sectional surface area measured at 0.4 mm from the ground cylindrical surface that is between 20-45% of the total ground cylindrical surface area.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: February 26, 2019
    Assignee: MAHLE International GmbH
    Inventors: Thomas Smith, Steffen Rudolph, Jesús Antonio Magallanes Castañeda
  • ROUGH CAST CYLINDER LINER
    Publication number: 20180245537
    Abstract: A cylinder liner for internal combustion engines has an outer roughened surface that has particularly good adherence properties. The surface has is covered with protrusions or spines of varying shapes and sizes, which are created by spraying the mold with a coating and then casting the cylinder liner in the mold. The spines are generally worm-shaped, with a length greater than a width, and a large spacing between the spines.
    Type: Application
    Filed: April 30, 2018
    Publication date: August 30, 2018
    Applicant: MAHLE International GmbH
    Inventors: Thomas SMITH, Steffen RUDOLPH, Jesús Antonio MAGALLANES CASTAÑEDA
  • ROUGH CAST CYLINDER LINER
    Publication number: 20170314501
    Abstract: A cylinder liner for internal combustion engines has an outer roughened surface that has particularly good adherence properties. The surface has is covered with protrusions or spines of varying shapes and sizes, which are created by spraying the mold with a coating and then casting the cylinder liner in the mold. The spines are generally conical or needle-shaped, with the bases being larger than the tips. The spines have an aggregate cross-sectional surface area measured at 0.2 mm from a ground cylindrical surface that is between 50-90% of the total ground cylindrical surface area, and an aggregate cross-sectional surface area measured at 0.4 mm from the ground cylindrical surface that is between 20-45% of the total ground cylindrical surface area.
    Type: Application
    Filed: January 25, 2017
    Publication date: November 2, 2017
    Applicant: MAHLE International GmbH
    Inventors: Thomas SMITH, Steffen RUDOLPH, Jesús Antonio MAGALLANES CASTAÑEDA