Patents Assigned to Wittenstein AG
  • Patent number: 10550924
    Abstract: A transmission, in particular a coaxial transmission or linear transmission, comprising a toothing, a tooth holder in which a plurality of tooth segments are accommodated to engage with the toothing, wherein the tooth segments are borne to be radially shiftable relative to the tooth holder, a drive element having a profiling for radially driving the tooth segments borne in a radially shiftable manner, wherein the transmission has inner initial stress.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: February 4, 2020
    Assignee: Wittenstein AG
    Inventors: Michael Schmidt, Heiko Schreiber, Frank Michel, Thomas Bayer
  • Publication number: 20170058933
    Abstract: Fastening system for a machine element (41), in particular for an elongate machine element (41), in particular for a toothed rack or a linear guide, for fastening in an abutment (45), in particular a machine bed or a flange, comprising: an eccentric bolt (1) which comprises a pin section (5) to be received in a receiving opening (55) of an abutment (45) and comprises a joining section (7), wherein the joining section is arranged in an eccentric manner in relation to the pin section (5), and an eccentric sleeve (3) to be slid onto the joining section (7).
    Type: Application
    Filed: August 26, 2016
    Publication date: March 2, 2017
    Applicant: WITTENSTEIN AG
    Inventors: Markus Schmieder, Marco Heckmann, Jochen Endres, Markus Herrmann
  • Publication number: 20160298748
    Abstract: Gearing (1), in particular coaxial gearing or linear gearing, having a toothing (5), a tooth carrier (11) in which there is received a multiplicity of teeth (7) for engagement with the toothing, wherein the teeth (7) are mounted so as to be radially displaceable relative to the tooth carrier (11), a cam disk (20) for the radial drive of the radially displaceably mounted teeth (7), wherein the cam disk (20) has two encircling rims, between which there is arranged a raceway, rolling bodies (23) which are arranged on the running surface between the rims, and a multiplicity of pivot segments (24) which are arranged in encircling fashion on the rolling bearing bodies and which lie in each case by way of a rolling bearing surface against the rolling bodies (23), wherein, on both sides of the rolling bearing surface, there is arranged in each case one rim bearing surface, wherein the two rim bearing surfaces lie at least partially against the rims.
    Type: Application
    Filed: April 7, 2016
    Publication date: October 13, 2016
    Applicant: WITTENSTEIN AG
    Inventors: Heiko Schreiber, Michael Schmidt
  • Publication number: 20160298749
    Abstract: Drive having a commutated electric motor (10), having a coaxial gearing (20) which is connected to the electric motor (10) and which comprises: an internal gear with an internal toothing (5); a tooth carrier (11) in which there are received a multiplicity of teeth (7) for engagement with the internal toothing, wherein the teeth are mounted so as to be radially displaceable relative to the tooth carrier (11) in the longitudinal direction of the teeth (7); a drive-input element with a profiling (22) for the radial drive of the radially displaceably mounted teeth (7), and having a gearing rotary encoder (30) which is connected to the drive output (25) of the gearing (20), wherein the gearing rotary encoder (30) is arranged and designed to detect a drive-output angular position and to output said drive-output angular position as a drive-output angle signal (?).
    Type: Application
    Filed: April 8, 2016
    Publication date: October 13, 2016
    Applicant: WITTENSTEIN AG
    Inventors: Tobias Burger, Rolf Hoffmann, Philippe Isabey
  • Publication number: 20160298747
    Abstract: Gearing (1), comprising a toothing (5), a tooth carrier (11) with radially oriented guides with in each case one tooth root opening and one tooth tip opening, teeth (7) which are received in the guides for engagement with the toothing (5), wherein the teeth (7) are mounted in the guides so as to be displaceable in the direction of their longitudinal axis and radially relative to the tooth carrier (11), wherein a central section of the guides, respectively, has an internal profile which is uniform in the longitudinal direction of the guide, a cam disk (20) for the radial drive of the teeth (7), wherein the teeth (7) have a run-in region between a respective tooth tip and a respective tooth body.
    Type: Application
    Filed: April 7, 2016
    Publication date: October 13, 2016
    Applicant: WITTENSTEIN AG
    Inventors: Heiko Schreiber, Michael Schmidt
  • Publication number: 20160231288
    Abstract: A method and an apparatus for monitoring a device of a drive system are proposed. With the objective of improving the application range of monitoring the drive system, the beneficial solution provides for the device to comprise a rotatably arranged rotational element, and for a detector arranged on the rotational element to be provided for detecting structure-borne sound as a detection signal, wherein evaluating of the detection signal is performed by extracting a signal portion, which is not affected by sound impinged on the structure, from the detection signal, and by comparing it to a reference parameter. Based on the comparison, a determination is made whether a deterioration of the drive system is present.
    Type: Application
    Filed: February 10, 2016
    Publication date: August 11, 2016
    Applicant: WITTENSTEIN AG
    Inventor: Philippe Isabey
  • Publication number: 20160058483
    Abstract: Medullary pin (1) for a distraction with segment transport and subsequent lengthening of a tubular bone, wherein the medullary pin (1) comprises: an at least partly hollow body (3) extending in an axial direction of the medullary pin (1), a locking means for locking the body (3) in a first end fragment (5) of the tubular bone, a first inner part (7), which is arranged displaceably in the axial direction inside the body (3) and comprises a first fixation means for the fixation of a middle fragment (15) of the tubular bone, a second inner part (17), which is arranged displaceably in the axial direction inside the body and comprises a second fixation means for the fixation of a second end fragment (25) of the tubular bone, and a drive unit (40) for the axial displacement of the first inner part (7) relative to the second inner part (17), wherein the drive unit (40) is arranged inside the body (3) between the first fixation means of the first inner part (7) and the second fixation means of the second inner part (
    Type: Application
    Filed: August 24, 2015
    Publication date: March 3, 2016
    Applicant: WITTENSTEIN AG
    Inventor: Roman Stauch
  • Patent number: 9273712
    Abstract: Fastening system for a linear machine element (2, 102) for fastening in a machine foundation (4), having a clamping element which has a shank (35) and a head (37), wherein the diameter of the head (37) is greater than the diameter of the shank (35), and having an eccentric (60) which comprises a sleeve (68) with an eccentric bore (66) and a torque-transmitting element (70), wherein the outer diameter of the head (37) is smaller than the inner diameter of the bore (66) or at least substantially corresponds to the inner diameter of the bore (66).
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: March 1, 2016
    Assignee: Wittenstein AG
    Inventors: Jochen Endres, Marco Heckmann
  • Patent number: 9169907
    Abstract: A spindle drive (1), in particular for a linear actuator, having a spindle (3), a spindle nut (7) which interacts with the spindle (3), and a lubricating channel outlet (20) which opens into an intermediate space between the spindle (3) and the spindle nut (7) for lubricating the spindle (3) and the spindle nut (7), the spindle drive (1) comprising, moreover, a stationary channel system and a rotatable channel system which is connected to the stationary channel system for feeding lubricant to the lubricating channel outlet (20).
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: October 27, 2015
    Assignee: Wittenstein AG
    Inventor: Michael Schwarzbach
  • Patent number: 9138266
    Abstract: Intramedullary nail for distraction of a long bone with an at least partially hollow shank extending in an axial direction of the intramedullary nail, locking element for locking the shank in a first bone fragment of the long bone, a first inner section which is arranged in axially movable manner within the shank and has a through hole orientated in the radial direction for accommodating a segment bolt for fixing a bone segment of the long bone, wherein the shank has an elongated hole in the area of the inner section for passing through of the segment bolt, an actuator for axially moving the first inner section, wherein a second inner section is arranged within the shank so as to be axially movable.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: September 22, 2015
    Assignee: Wittenstein AG
    Inventor: Roman Stauch
  • Patent number: 9080651
    Abstract: Drive apparatus (1, 101), in particular for driving a worm of an injection molding machine, which worm is arranged coaxially with respect to an injection molding cylinder, having a housing (9, 109) which is mounted such that it can be displaced in an axial direction of the housing (9, 109) and is fixed rotationally, an output shaft (21, 121) which is mounted non-displaceably and rotatably in the housing (9, 109), a rotational drive (5) which is arranged in the housing (9, 109) for the rotational drive of the output shaft (21, 121), and a translatory drive (3) which is arranged in the housing (9, 109) for the translatory drive of the housing (9, 109).
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: July 14, 2015
    Assignee: Wittenstein AG
    Inventors: Michael Schwarzbach, Dieter Uhl
  • Patent number: 8881615
    Abstract: Transmission, in particular for converting a rotational movement around the longitudinal axis of the transmission into a linear movement in the direction of the longitudinal axis or vice versa, having a rod having a gearing, a gear tooth carrier, in which gear teeth are accommodated so they are radially movable for an engagement with the gearing, the rod and the gear tooth carrier being mounted rotationally fixed relative to one another.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: November 11, 2014
    Assignee: Wittenstein AG
    Inventor: Heiko Schreiber
  • Patent number: 8823227
    Abstract: In a drive unit having at least one transmission stage (Ü) and one drive element (4) for driving with high power density, having a drive element (4), and element (8), and an output element (14), wherein a translation and transmission of a drive torque occurs between the drive element (4) and the output element (14) via a plurality of radially movable toothed segments (10), the drive element (4) is to be embodied as an electrical drive for the transmission stage (Ü).
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: September 2, 2014
    Assignee: Wittenstein AG
    Inventor: Thomas Bayer
  • Publication number: 20140239748
    Abstract: A rotor, in particular a permanent magnet rotor, for an electrical machine, with a magnet carrier arranged concentrically with an axis of the rotor, wherein the magnet carrier has protrusions on its outer face, a number of magnets arranged on the outer face of the magnet carrier, which are arranged in the peripheral direction of the magnet carrier side-by-side and spaced apart from one another on the magnet carrier, wherein the magnets in each case are arranged between the protrusions, and plastic, which in each case is arranged between the magnets and at least partially encloses the protrusions.
    Type: Application
    Filed: January 30, 2014
    Publication date: August 28, 2014
    Applicant: Wittenstein AG
    Inventors: Christian Herz, Ingolf Gröning, Kay-Horst Dempewolf
  • Publication number: 20140239749
    Abstract: Rotor, in particular permanent magnet rotor, for an electric machine, having a magnet support, a plurality of magnets which are arranged on the magnet support, and a rotor core which is arranged between a shaft and the magnet support, wherein the rotor core comprises plastic.
    Type: Application
    Filed: February 25, 2014
    Publication date: August 28, 2014
    Applicant: Wittenstein AG
    Inventor: Daniel Fehn
  • Patent number: 8783134
    Abstract: Gearing (1), in particular single-stage gearing having a transmission ratio of greater than 1 to 10, having an internal gear (2) with an internal toothing (5), a first toothed ring with radially movable first teeth (6) for engaging into the internal toothing (5), a second toothed ring with radially movable second teeth (7) for engaging into the internal toothing (5), an inner shaft (21) on which is fastened a first cam disk (16) for the radial drive of the first teeth (6) and a second cam disk (17) for the radial drive of the second teeth (7), and a load dividing device for dividing a torque transmitted via the toothed rings between the toothed rings.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: July 22, 2014
    Assignee: Wittenstein AG
    Inventors: Frank Michel, Michael Schmidt, Thomas Bayer, Heiko Schreiber, Lars Estermann
  • Patent number: 8656809
    Abstract: In a gearing, in particular coaxial gearing, hollow shaft gearing, hypoid gearing, axial gearing or linear gearing, with a driving element (7), an element (3) and an output element (11), a stepping-up and transmission of a driving torque between driving element (7) and output element (11) are to take place via a plurality of movable tooth segments (5).
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: February 25, 2014
    Assignee: Wittenstein AG
    Inventors: Thomas Bayer, Michael Schmidt
  • Patent number: D704756
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: May 13, 2014
    Assignee: Wittenstein AG
    Inventor: Klaus Voelker
  • Patent number: D733779
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: July 7, 2015
    Assignee: Wittenstein AG
    Inventor: Siegfried Ebner
  • Patent number: D740867
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: October 13, 2015
    Assignee: Wittenstein AG
    Inventor: Nikolai Barta