Patents by Inventor Wolfram Kruhoeffer

Wolfram Kruhoeffer 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).

  • Method for producing a rolling bearing ring having an improved robustness against the formation of white etching cracks (WEC)
    Patent number: 11624403
    Abstract: The invention relates to a method for producing a rolling bearing ring featuring an improved robustness against the formation of white etching cracks (WEC), wherein the rolling bearing component, which is made of a hypo-eutectoid heat-treated steel containing C in an amount of 0.4-0.55% and Cr in an amount of 0.5-2.0% in order to form a hardened boundary layer, is inductively heated, then quenched and subsequently tempered.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: April 11, 2023
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Lothar Hofmann, Andreas Mangold, Toni Blass, Wolfram Kruhoeffer, Werner Trojahn
  • BEARING RING
    Publication number: 20130004110
    Abstract: A bearing ring includes a ring element having at least two grooves which extend from one axial side to the other axial side of the ring element and form predetermined breaking lines for cracking the ring element. The ring element is in the form of a sleeve produced by deep-drawing, wherein the grooves are also machined in during the deep-drawing of the sleeve.
    Type: Application
    Filed: February 3, 2011
    Publication date: January 3, 2013
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Wolfram Kruhoeffer, Tobias Mederer, Oliver Graf-Goller
  • Seal for an antifriction bearing
    Publication number: 20060239599
    Abstract: The invention relates to a sealing arrangement (1) for a rolling-contact bearing (2), comprising a rotating sealing disk (3), which engages with a sealing lip (14) in a recess (16) of the inner bearing ring (5). The sealing lip (14) is also provided with a bead (24), the arrangement and fitted position of which bring about a prestressing of the sealing lip (14) on the wall (18) of the recess (16).
    Type: Application
    Filed: July 20, 2004
    Publication date: October 26, 2006
    Inventors: Rainer Schenk, Bernard Nicola, Thomas Fickert, Wolfram Kruhoeffer, Harald Peschke