Patents by Inventor SINA SHAHVERDI

SINA SHAHVERDI 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).

  • Multi-piece oil scraper ring with reduced friction
    Patent number: 11713811
    Abstract: A multi-piece piston ring includes an upper scraper ring 10 comprising two flank surfaces, an outer scraping surface/edge, and an inner spring contact surface. A lower support ring 4 includes two flank surfaces, an outer spring contact surface, and a support ring inner surface. An expander spring/spiral spring 8, which, on an upper and lower side, is operational to abut against a respective lower flank surface of the upper scraper ring 10 and against the upper flank surface of the support ring 4. Scraper ring contact projections protruding upwards on an inner spring side, and support ring contact projections protruding downwards on an outer spring side, wherein the scraper ring contact projections are to each abut against the inner spring contact surface of the scraper ring 10, and support ring contact projections protruding downwards are to abut against the outer spring contact surface.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: August 1, 2023
    Assignee: Federal-Mogul Burscheid GmbH
    Inventors: Stephan Machliner, Sina Shahverdi, Dirk Bärenreuter
  • MULTI-PIECE OIL SCRAPER RING WITH REDUCED FRICTION
    Publication number: 20210270368
    Abstract: A multi-piece piston ring includes an upper scraper ring 10 comprising two flank surfaces, an outer scraping surface/edge, and an inner spring contact surface. A lower support ring 4 includes two flank surfaces, an outer spring contact surface, and a support ring inner surface. An expander spring/spiral spring 8, which, on an upper and lower side, is operational to abut against a respective lower flank surface of the upper scraper ring 10 and against the upper flank surface of the support ring 4. Scraper ring contact projections protruding upwards on an inner spring side, and support ring contact projections protruding downwards on an outer spring side, wherein the scraper ring contact projections are to each abut against the inner spring contact surface of the scraper ring 10, and support ring contact projections protruding downwards are to abut against the outer spring contact surface.
    Type: Application
    Filed: May 28, 2019
    Publication date: September 2, 2021
    Inventors: STEPHAN MACHLINER, SINA SHAHVERDI, DIRK BÄRENREUTER