Patents by Inventor Mario KREUTZER

Mario KREUTZER 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).

  • Publication number: 20240035554
    Abstract: The disclosure relates to a threaded nut of a ball screw drive. The threaded nut includes an inner sleeve made of sheet metal and an outer sleeve made of sheet metal. The inner and outer sleeves are nested axially in one another to form a nut sleeve. A thread of the nut sleeve is helically wound about a longitudinal axis of the threaded nut and forms a ball groove on the inner circumference of the inner sleeve. The outer sleeve is provided along the thread with at least one outer hole into which material of the inner sleeve is molded.
    Type: Application
    Filed: November 3, 2021
    Publication date: February 1, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Mario Kreutzer, Richard Baier, Claus Pfeffer, Thomas Kandler, Bastian Kettler
  • Publication number: 20240035553
    Abstract: The disclosure relates to a threaded nut of a ball screw, the threaded nut having an inner sleeve made of sheet metal and an outer sleeve made of sheet metal, which are nested axially in one another to form a nut sleeve. The nut sleeve is provided with a thread, which is formed helically about a longitudinal axis of the threaded nut and which forms, on the inner circumference of the nut sleeve, a ball groove wound helically about the longitudinal axis of the threaded nut and, and on the outer circumference of the nut sleeve, a helically wound outer ridge.
    Type: Application
    Filed: November 3, 2021
    Publication date: February 1, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Mario Kreutzer, Richard Baier, Claus Pfeffer, Thomas Kandler
  • Patent number: 11614150
    Abstract: A ball screw nut for a ball screw drive includes a sleeve element which is formed as a sheet metal part and has a thread which is formed for the largest part as a load channel, wherein a relief section formed within the thread extends from the load channel at least slightly radially outwards and adjoins a deflection channel.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: March 28, 2023
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Claus Pfeffer, Richard Baier, Mario Kreutzer
  • Patent number: 11530740
    Abstract: A ball-screw actuator includes a screw nut having a metal core and an over-molded plastic outer shell. The plastic outer shell includes features which would be expensive to manufacture in a single piece metal screw nut, such as an anti-rotation feature, an axial position control feature, and a lateral position control feature. The anti-rotation feature may take the form of an axial groove or of an axial ridge.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: December 20, 2022
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Renato de Paula, Mario Kreutzer, Dieter Adler, Michael Zinnecker
  • Publication number: 20220275854
    Abstract: A method for producing a threaded nut of a threaded drive, includes the following steps: a sleeve is produced from a steel sheet which is suitable for case-hardening; a rolling profile for a rolling contact with rolling bodies is molded on the inner circumference of the sleeve, said rolling profile being wound in a helical manner about the longitudinal axis of the sleeve; a flange is welded to the end face of the sleeve; the flange is provided with a welding surface on the flange end face facing away from the sleeve for welding to a machine part; the welding surface initially has a diffusion-inhibiting layer which inhibits the penetration of carbon; and the welding surface is exposed by removing the diffusion-inhibiting layer after case-hardening the threaded nut. A threaded nut produced according to the method can be part of a ball screw drive, the flange of which can be welded to a provided machine part by the user.
    Type: Application
    Filed: June 25, 2020
    Publication date: September 1, 2022
    Inventors: Mario Kreutzer, Dieter Eckert, Paul Heinz, Richard Baier
  • Publication number: 20220260139
    Abstract: The disclosure relates to a method for producing a threaded nut of a threaded drive. In a forming process, a sleeve is produced from a steel sheet which is suitable for case-hardening. A flange is integrally formed on the sleeve for welding to a machine part. A welding surface of the flange has a diffusion-inhibiting layer which inhibits the penetration of carbon into the welding surface. The sleeve is case-hardened, and the welding surface is then exposed by removing the diffusion-inhibiting layer. The sleeve can be bonded to a machine part on the exposed welding surface of the sleeve.
    Type: Application
    Filed: June 25, 2020
    Publication date: August 18, 2022
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Mario Kreutzer, Dieter Eckert, Paul Heinz, Richard Baier
  • Publication number: 20220205519
    Abstract: A profiled nut (1) of a screw drive includes a sleeve (3) produced from sheet steel, has a non-cuttingly formed rolling profile (4) on the inner circumference for rolling contact with rolling bodies and is hardened in a heat treatment method at least in the region of the rolling profile (4). An inner lateral surface of the sleeve (3) having the rolling profile (4) is hardened and has a higher Rockwell hardness. An outer lateral surface of the sleeve (3) is designed such that it can be welded and has a lower Rockwell hardness.
    Type: Application
    Filed: April 22, 2020
    Publication date: June 30, 2022
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Mario Kreutzer, Richard Baier, Thomas Kandler, Paul Heinz
  • Patent number: 11015688
    Abstract: A ball screw drive comprising a leadscrew that has at least one outer ball groove and comprising a threaded nut that has at least one inner ball groove, which ball grooves together to form a ball channel in which balls, via which the leadscrew is guided relative to the threaded nut, are accommodated, wherein in the ball groove of the threaded nut is provided at least one radially closed pocket in which a deflection element for deflecting the balls moving in the ball groove is accommodated, wherein the threaded nut has an outer deflection device, which outer deflection device is axially in front of the deflection element in the form of an individual deflection element, is situated on the outer side of the threaded nut and engages in two radial openings in the threaded nut, and by means of which outer deflection device the balls are axially offset.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: May 25, 2021
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Mario Kreutzer, Gerd Sanewski, Nadine Kliemann
  • Patent number: 10968992
    Abstract: A ball screw drive, comprising a screw that includes at least one outer ball groove, and a threaded nut that includes at least one inner ball groove, wherein the inner and outer ball grooves combine to form a ball channel in which one or more balls are accommodated, wherein at least one pocket is formed in the threaded nut, in which a deflection element is accommodated for deflecting the balls rolling in the ball groove, wherein the deflection element includes a deflection body, on which an intake and discharge section are formed and open into the ball groove to enable the one or more balls to enter and exit the groove, and wherein the intake and discharge section includes a snaking bath that enables the ball to be moved from one ball groove section into an adjacent ball path section.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: April 6, 2021
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Mario Kreutzer, Gerd Sanewski
  • Publication number: 20210088116
    Abstract: A ball screw nut for a ball screw drive includes a sleeve element which is formed as a sheet metal part and has a thread which is formed for the largest part as a load channel, wherein a relief section formed within the thread extends from the load channel at least slightly radially outwards and adjoins a deflection channel.
    Type: Application
    Filed: January 25, 2019
    Publication date: March 25, 2021
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Claus Pfeffer, Richard Baier, Mario Kreutzer
  • Publication number: 20210071743
    Abstract: A ball-screw actuator includes a screw nut having a metal core and an over-molded plastic outer shell. The plastic outer shell includes features which would be expensive to manufacture in a single piece metal screw nut, such as an anti-rotation feature, an axial position control feature, and a lateral position control feature. The anti-rotation feature may take the form of an axial groove or of an axial ridge.
    Type: Application
    Filed: September 6, 2019
    Publication date: March 11, 2021
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Renato de Paula, Mario Kreutzer, Dieter Adler, Michael Zinnecker
  • Patent number: 10641370
    Abstract: The invention relates to a ball screw including a spindle nut arranged on a lead screw, and balls, which roll on ball grooves of the spindle nut and of the lead screw, and a circumferential stop on the screw side and a circumferential stop on the nut side, the spindle nut being arranged in a sleeve surrounding the ball nut, the sleeve is formed from sheet metal by shaping and the nut-side circumferential stop is formed integrally on the sleeve.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: May 5, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Mario Kreutzer, Richard Baier, Markus Oswald, Dieter Adler
  • Patent number: 10626966
    Abstract: A ball screw of an electromechanical brake comprising a ball screw nut disposed on a spindle, wherein the spindle includes complementary tracks formed on the spindle and the ball screw nut. The ball screw further includes a race that includes a plurality of ball pockets spaced apart from one another and a protruding section that includes a concave bearing surface, a ball housed between the concave bearing surface and an end section of a first spring element for a main load direction, and a second spring element for a return stroke direction, wherein the second spring element includes a second spring end section in contact with an opposite side of the bearing surface.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: April 21, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Mario Kreutzer, Christian Marty, Harry Schmeiko, Manfred Gotz
  • Publication number: 20190072162
    Abstract: Ball screws are disclosed, such as a ball screw having a spindle nut which is arranged on a threaded spindle and in which balls are received which roll along ball tracks of the spindle nut and the threaded spindle, and having a first stop element associated with the spindle nut and a second stop element associated with the threaded spindle, wherein at least one stop element has a resiliently deformable body.
    Type: Application
    Filed: October 19, 2016
    Publication date: March 7, 2019
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Markus Oswald, Stefan Michaloudis, Mario Kreutzer
  • Publication number: 20180216711
    Abstract: A ball screw drive, comprising a screw that includes at least one outer ball groove, and a threaded nut that includes at least one inner ball groove, wherein the inner and outer ball grooves combine to form a ball channel in which one or more balls are accommodated, wherein at least one pocket is formed in the threaded nut, in which a deflection element is accommodated for deflecting the balls rolling in the ball groove, wherein the deflection element includes a deflection body, on which an intake and discharge section are formed and open into the ball groove to enable the one or more balls to enter and exit the groove, and wherein the intake and discharge section includes a snaking bath that enables the ball to be moved from one ball groove section into an adjacent ball path section.
    Type: Application
    Filed: July 14, 2016
    Publication date: August 2, 2018
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Mario KREUTZER, Gerd SANEWSKI
  • Publication number: 20180209521
    Abstract: A ball screw drive comprising a leadscrew that has at least one outer ball groove and comprising a threaded nut that has at least one inner ball groove, which ball grooves together to form a ball channel in which balls, via which the leadscrew is guided relative to the threaded nut, are accommodated, wherein in the ball groove of the threaded nut is provided at least one radially closed pocket in which a deflection element for deflecting the balls moving in the ball groove is accommodated, wherein the threaded nut has an outer deflection device, which outer deflection device is axially in front of the deflection element in the form of an individual deflection element, is situated on the outer side of the threaded nut and engages in two radial openings in the threaded nut, and by means of which outer deflection device the balls are axially offset.
    Type: Application
    Filed: July 14, 2016
    Publication date: July 26, 2018
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Mario KREUTZER, Gerd SANEWSKI, Nadine KLIEMANN
  • Publication number: 20180058553
    Abstract: A threaded drive shaft is provided that has a threaded spindle, a spindle nut, and a spindle disk. The threaded spindle has two different sections with two different outer diameters. The spindle nut is about the larger-diameter portion, such that rotation of the threaded spindle within the spindle nut is allowed. The spindle disk is connected about the smaller-diameter portion of the threaded spindle, and is fixed thereto in a rotationally-fixed manner. The spindle disk has a tapered surface contacting a corresponding tapered surface of the threaded spindle to inhibit rotation. The spindle disk further includes a flange extending from an outer surface thereof that defines a first limit stop surface configured to contact a second limit stop surface of the spindle nut to limit rotation.
    Type: Application
    Filed: September 1, 2017
    Publication date: March 1, 2018
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Reinhard KICK-RODENBUECHER, Mario KREUTZER
  • Publication number: 20180017147
    Abstract: A ball screw of an electromechanical brake comprising a ball screw nut disposed on a spindle, wherein the spindle includes complementary tracks formed on the spindle and the ball screw nut. The ball screw further includes a race that includes a plurality of ball pockets spaced apart from one another and a protruding section that includes a concave bearing surface, a ball housed between the concave bearing surface and an end section of a first spring element for a main load direction, and a second spring element for a return stroke direction, wherein the second spring element includes a second spring end section in contact with an opposite side of the bearing surface.
    Type: Application
    Filed: January 14, 2016
    Publication date: January 18, 2018
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Mario KREUTZER, Christian MARTY, Harry SCHMEIKO, Manfred GOETZ
  • Publication number: 20170299028
    Abstract: The invention relates to a ball screw including a spindle nut arranged on a lead screw, and balls, which roll on ball grooves of the spindle nut and of the lead screw, and a circumferential stop on the screw side and a circumferential stop on the nut side, the spindle nut being arranged in a sleeve surrounding the ball nut, the sleeve is formed from sheet metal by shaping and the nut-side circumferential stop is formed integrally on the sleeve.
    Type: Application
    Filed: September 3, 2015
    Publication date: October 19, 2017
    Applicant: Schaeffler Techologies AG & Co. KG
    Inventors: Mario Kreutzer, Richard Baier, Markus Oswald, Dieter Adler
  • Patent number: 9746059
    Abstract: A ball screw drive with a spindle nut (1) arranged on a screw spindle (2) and a continuous ball channel (7) formed by the screw spindle (2) and the spindle nut (1), in which channel balls arranged along a continuous ball track (8) circulate continuously, wherein the continuous ball channel (7) includes a load channel (9) wound in a spiral shape, with more than one winding, about a spindle axis (S) and a deflecting channel (10) which continuously connects the two ends of the load channel (9) to one another, wherein the spindle nut (1) has a nut part (4), on the inner circumference of which a ball groove (6) is formed being wound in a spiral shape about the spindle axis S, which ball groove, together with a ball groove (3) of the screw spindle (2) being wound in a spiral shape about the spindle axis S, forms the load channel (9), and wherein a deflecting element (5) including the deflecting channel (10) is arranged on the outer periphery of the nut part (4), and the deflecting ends (12) of the deflecting elemen
    Type: Grant
    Filed: July 4, 2013
    Date of Patent: August 29, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Mario Kreutzer, Dieter Adler