Patents by Inventor JOERN PROEPPER

JOERN PROEPPER 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
    Patent number: 10125870
    Abstract: A piston ring for a piston of a piston engine has an external circumferential surface (2), and internal circumferential surface (4), and upper flank (6) pointing in the direction of the piston upper side, and a lower flank (8) pointing in the direction of the piston underside. The lower flank (8) runs obliquely with respect to the upper flank (6), so that axial height (A) of the piston ring is grater at the external circumferential surface (2) than the axial height (B) at the internal circumferential surface (4), and wherein on each side of the thrust of the piston ring at least one recess (10) is provided in the upper flank (6).
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: November 13, 2018
    Assignee: Federal-Mogul Burscheid GmbH
    Inventors: Richard Mittler, Joern Proepper
  • PISTON RING
    Publication number: 20170130840
    Abstract: A piston ring for a piston of a piston engine has an external circumferential surface (2), and internal circumferential surface (4), and upper flank (6) pointing in the direction of the piston upper side, and a lower flank (8) pointing in the direction of the piston underside. The lower flank (8) runs obliquely with respect to the upper flank (6), so that axial height (A) of the piston ring is grater at the external circumferential surface (2) than the axial height (B) at the internal circumferential surface (4), and wherein on each side of the thrust of the piston ring at least one recess (10) is provided in the upper flank (6).
    Type: Application
    Filed: June 10, 2015
    Publication date: May 11, 2017
    Inventors: RICHARD MITTLER, JOERN PROEPPER