Patents by Inventor FRANK NATHEM

FRANK NATHEM 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 having a groove seal
    Patent number: 10436323
    Abstract: A piston ring (2) has at least one ring flank seal (14) arranged on a lower ring flank (8) of the piston ring.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: October 8, 2019
    Assignee: Federal-Mogul Burscheid GmbH
    Inventors: Richard Mittler, Frank Nathem
  • PISTON RING HAVING A GROOVE SEAL
    Publication number: 20190011047
    Abstract: A piston ring (2) has at least one ring flank seal (14) arranged on a lower ring flank (8) of the piston ring.
    Type: Application
    Filed: April 19, 2016
    Publication date: January 10, 2019
    Inventors: RICHARD MITTLER, FRANK NATHEM
  • PISTON RING WITH VARYING APEX LINES
    Publication number: 20180274675
    Abstract: A piston ring having an outer running face, two flanks and an inner circumferential face is provided. The running face has profiling. The profile of the running face is substantially convexly curved and has an apex. The axial position of the apex varies periodically in the circumferential direction.
    Type: Application
    Filed: May 29, 2018
    Publication date: September 27, 2018
    Inventors: Richard MITTLER, Frank NATHEM
  • Piston ring with a periodically varying groove
    Patent number: 9671019
    Abstract: A piston ring having an outer running face, two flanks and an inner circumferential face is provided, the running face of which has profiling with a groove. The groove is arranged between two running face sections in relation to the cross section of the piston ring. The two running face sections are spaced apart from each other and substantially convexly curved and each have an apex. The groove has a periodically varying depth and a periodically varying width, and the number of periods of the course of the depth and the number of periods of the course of the width are equal.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: June 6, 2017
    Assignee: Federal-Mogul Burscheid GmbH
    Inventors: Richard Mittler, Frank Nathem
  • 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
  • PISTON RING WITH A PERIODICALLY VARYING GROOVE
    Publication number: 20150300492
    Abstract: A piston ring having an outer running face, two flanks and an inner circumferential face is provided, the running face of which has profiling with a groove. The groove is arranged between two running face sections in relation to the cross section of the piston ring. The two running face sections are spaced apart from each other and substantially convexly curved and each have an apex. The groove has a periodically varying depth and a periodically varying width, and the number of periods of the course of the depth and the number of periods of the course of the width are equal.
    Type: Application
    Filed: September 24, 2013
    Publication date: October 22, 2015
    Inventors: RICHARD MITTLER, FRANK NATHEM
  • PISTON RING WITH VARYING APEX LINES
    Publication number: 20150292620
    Abstract: A piston ring having an outer running face, two flanks and an inner circumferential face is provided. The running face has profiling. The profile of the running face is substantially convexly curved and has an apex. The axial position of the apex varies periodically in the circumferential direction.
    Type: Application
    Filed: September 23, 2013
    Publication date: October 15, 2015
    Inventors: RICHARD MITTLER, FRANK NATHEM