Patents by Inventor MARKUS MAHL

MARKUS MAHL 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 ring comprising a groove in the circumferential direction
    Patent number: 9951868
    Abstract: A piston ring for an internal combustion engine or for a compressor, in particular a piston ring includes an exterior running surface (3), two flanks (5, 6), and an interior circumferential surface (7); the running surface (3) has a profiled section with a groove (2), the groove (2) being located between an upper portion (3?) of the running surface and a lower portion (3?) of the running surface in relation to the cross-section of the piston ring (1).
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: April 24, 2018
    Assignee: Federal-Mogul Friedberg
    Inventor: Markus Mahl
  • PISTON RING COMPRISING A GROOVE IN THE CIRCUMFERENTIAL DIRECTION
    Publication number: 20170089461
    Abstract: The present invention relates to a piston ring for an internal combustion engine or respectively for a compressor, in particular a piston ring with an external running surface (3), two flanks (5, 6) and an internal circumferential surface (7), wherein the running surface (3) has a profiling with a groove (2), wherein the groove (2) is arranged with respect to the cross-section of the piston ring (1) between an upper running surface portion (3?) and a lower running surface portion (3?).
    Type: Application
    Filed: March 18, 2015
    Publication date: March 30, 2017
    Inventor: MARKUS MAHL
  • PISTON RING HAVING VARYING ATTRIBUTES
    Publication number: 20160069456
    Abstract: The invention relates to a piston ring having an outside circumferential surface, an inside circumferential surface and two flanks, wherein the circumferential surface has a spherical profiling, and wherein the axial width of the bearing surface and/or the angle between the bearing surface and at least one flank and/or the radius of the profiling vary periodically over the circumference of the piston ring.
    Type: Application
    Filed: April 9, 2014
    Publication date: March 10, 2016
    Inventors: MARKUS MAHL, REINHARD LAUMEYER, JOHANN RIEDL, FRANK NATHEM