Patents by Inventor Sridharan Krishnan

Sridharan Krishnan 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).

  • Patent number: 11731685
    Abstract: A rack-and-pinion gear is described, which is suitable in particular for a steering system of a motor vehicle. In this a pinion is supported in a pinion housing and meshes with a rack inside this pinion housing. The rack here projects from the pinion housing through at least one housing aperture. A stop ring, which serves to limit a rack longitudinal movement and/or a tilting of the rack, is moreover held in the housing aperture by means of a press fit. In addition, a steering gear having such a rack-and-pinion gear and a steering system for a motor vehicle comprising such a steering gear are described.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: August 22, 2023
    Assignee: ZF Automotive Germany GmbH
    Inventors: Eduard Span, Timm Leuerer, Rolf von Laar, Sridharan Krishnan, Robert Kolloch
  • Patent number: 11691661
    Abstract: A device for a steering system of a motor vehicle for pressing a toothed rack against a drive pinion is specified, the device having a housing and a thrust piece which is mounted displaceably in the housing and which has a circumferential wall which is in contact with the housing, the thrust piece having, on its circumferential wall, at least one depression which runs in a circumferential direction at least in certain portions and which delimits a hollow chamber arranged between thrust piece and housing.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: July 4, 2023
    Assignee: ZF Automotive Germany GmbH
    Inventors: Sridharan Krishnan, Robert Kolloch, Eduard Span
  • Patent number: 11485412
    Abstract: A drag link guide assembly for guiding a drag link comprises a slide bushing and a housing enclosing the slide bushing. The housing comprises a socket portion, into which the slide bushing is inserted. The slide bushing comprises a locating area for the drag link having a substantially circular cylindrical periphery with at least one plane torsional locking face. The slide bushing comprises an outward-pointing structure, which interacts with a mating structure that is provided on the internal surface of the housing. A method for producing a drag link guide assembly is furthermore described.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: November 1, 2022
    Assignee: ZF Automotive Germany GmbH
    Inventors: Eduard Span, Sridharan Krishnan, Robert Kolloch
  • Publication number: 20210171096
    Abstract: A drag link guide assembly for guiding a drag link comprises a slide bushing and a housing enclosing the slide bushing. The housing comprises a socket portion, into which the slide bushing is inserted. The slide bushing comprises a locating area for the drag link having a substantially circular cylindrical periphery with at least one plane torsional locking face. The slide bushing comprises an outward-pointing structure, which interacts with a mating structure that is provided on the internal surface of the housing. A method for producing a drag link guide assembly is furthermore described.
    Type: Application
    Filed: December 7, 2020
    Publication date: June 10, 2021
    Applicant: ZF Automotive Germany GmbH
    Inventors: Eduard Span, Sridharan Krishnan, Robert Kolloch
  • Publication number: 20210146989
    Abstract: A rack-and-pinion gear is described, which is suitable in particular for a steering system of a motor vehicle. In this a pinion is supported in a pinion housing and meshes with a rack inside this pinion housing. The rack here projects from the pinion housing through at least one housing aperture. A stop ring, which serves to limit a rack longitudinal movement and/or a tilting of the rack, is moreover held in the housing aperture by means of a press fit. In addition, a steering gear having such a rack-and-pinion gear and a steering system for a motor vehicle comprising such a steering gear are described.
    Type: Application
    Filed: November 18, 2020
    Publication date: May 20, 2021
    Applicant: ZF Automotive Germany GmbH
    Inventors: Eduard Span, Timm Leuerer, Rolf von Laar, Sridharan Krishnan, Robert Kolloch
  • Publication number: 20200324803
    Abstract: A device for a steering system of a motor vehicle for pressing a toothed rack against a drive pinion is specified, the device having a housing and a thrust piece which is mounted displaceably in the housing and which has a circumferential wall which is in contact with the housing, the thrust piece having, on its circumferential wall, at least one depression which runs in a circumferential direction at least in certain portions and which delimits a hollow chamber arranged between thrust piece and housing.
    Type: Application
    Filed: April 8, 2020
    Publication date: October 15, 2020
    Applicant: ZF Automotive Germany GmbH
    Inventors: Sridharan Krishnan, Robert Kolloch, Eduard Span