Patents Assigned to LIEBHERR-COMPONENTS KIRCHDORF GMBH
  • Method for manufacturing a piston rod unit and a hollow shaft
    Patent number: 11841034
    Abstract: A piston rod unit and a method for producing a piston rod unit, or a shaft, in light-weight construction, with a rod which is hollowly-drilled by means of a deep bore into the rod shank, and the resulting rod opening is closed subsequently by means of a forging process.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: December 12, 2023
    Assignee: LIEBHERR-COMPONENTS KIRCHDORF GMBH
    Inventors: Christoph Guhl, Bernhard Müller
  • Method for repairing a piston-cylinder unit within a working machine
    Patent number: 11754099
    Abstract: Disclosed is a method for repairing a piston-cylinder unit within a working machine or within an attachment, wherein a connection of the piston rod with the machine or implement structure is released and the piston rod, the piston and at least one bearing head is jointly removed from the cylinder housing as an assembly and replaced by a premounted substitute assembly consisting of piston rod, piston and at least one bearing head.
    Type: Grant
    Filed: October 12, 2022
    Date of Patent: September 12, 2023
    Assignee: LIEBHERR-COMPONENTS KIRCHDORF GMBH
    Inventors: Christian Zenner, Jennifer Kries
  • Method for repairing a piston-cylinder unit within a working machine
    Patent number: 11499573
    Abstract: Disclosed is a method for repairing a piston-cylinder unit within a working machine or within an attachment, wherein a connection of the piston rod with the machine or implement structure is released and the piston rod, the piston and at least one bearing head is jointly removed from the cylinder housing as an assembly and replaced by a premounted substitute assembly consisting of piston rod, piston and at least one bearing head.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: November 15, 2022
    Assignee: Liebherr-Components Kirchdorf GmbH
    Inventors: Christian Zenner, Jennifer Kries
  • Method for manufacturing a piston rod unit and a hollow shaft
    Patent number: 11193511
    Abstract: The invention relates to a method for producing a piston rod unit, or a shaft, in lightweight construction, with a rod which is hollowly-drilled by means of a deep bore into the rod shank, and the resulting rod opening is closed subsequently by means of a forging process.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: December 7, 2021
    Assignee: LIEBHERR-COMPONENTS KIRCHDORF GMBH
    Inventors: Christoph Guhl, Bernhard Müller
  • METHOD FOR MANUFACTURING A PISTOL ROD UNIT AND A HOLLOW SHAFT
    Publication number: 20190186507
    Abstract: The invention relates to a method for producing a piston rod unit, or a shaft, in light-weight construction, with a rod which is hollowly-drilled by means of a deep bore into the rod shank, and the resulting rod opening is closed subsequently by means of a forging process.
    Type: Application
    Filed: June 21, 2017
    Publication date: June 20, 2019
    Applicant: LIEBHERR-COMPONENTS KIRCHDORF GMBH
    Inventors: Christoph GUHL, Bernhard MÜLLER