Patents Assigned to Wittenstein AG
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Patent number: 10550924Abstract: 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: GrantFiled: March 25, 2013Date of Patent: February 4, 2020Assignee: Wittenstein AGInventors: Michael Schmidt, Heiko Schreiber, Frank Michel, Thomas Bayer
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Publication number: 20170058933Abstract: 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: ApplicationFiled: August 26, 2016Publication date: March 2, 2017Applicant: WITTENSTEIN AGInventors: Markus Schmieder, Marco Heckmann, Jochen Endres, Markus Herrmann
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Publication number: 20160298748Abstract: 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: ApplicationFiled: April 7, 2016Publication date: October 13, 2016Applicant: WITTENSTEIN AGInventors: Heiko Schreiber, Michael Schmidt
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Publication number: 20160298749Abstract: 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: ApplicationFiled: April 8, 2016Publication date: October 13, 2016Applicant: WITTENSTEIN AGInventors: Tobias Burger, Rolf Hoffmann, Philippe Isabey
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Publication number: 20160298747Abstract: 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: ApplicationFiled: April 7, 2016Publication date: October 13, 2016Applicant: WITTENSTEIN AGInventors: Heiko Schreiber, Michael Schmidt
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Publication number: 20160231288Abstract: 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: ApplicationFiled: February 10, 2016Publication date: August 11, 2016Applicant: WITTENSTEIN AGInventor: Philippe Isabey
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Publication number: 20160058483Abstract: 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: ApplicationFiled: August 24, 2015Publication date: March 3, 2016Applicant: WITTENSTEIN AGInventor: Roman Stauch
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Patent number: 9273712Abstract: 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: GrantFiled: August 4, 2014Date of Patent: March 1, 2016Assignee: Wittenstein AGInventors: Jochen Endres, Marco Heckmann
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Patent number: 9169907Abstract: 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: GrantFiled: June 25, 2013Date of Patent: October 27, 2015Assignee: Wittenstein AGInventor: Michael Schwarzbach
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Patent number: 9138266Abstract: 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: GrantFiled: September 13, 2012Date of Patent: September 22, 2015Assignee: Wittenstein AGInventor: Roman Stauch
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Patent number: 9080651Abstract: 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: GrantFiled: July 2, 2014Date of Patent: July 14, 2015Assignee: Wittenstein AGInventors: Michael Schwarzbach, Dieter Uhl
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Patent number: 8881615Abstract: 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: GrantFiled: June 28, 2012Date of Patent: November 11, 2014Assignee: Wittenstein AGInventor: Heiko Schreiber
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Patent number: 8823227Abstract: 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: GrantFiled: November 27, 2008Date of Patent: September 2, 2014Assignee: Wittenstein AGInventor: Thomas Bayer
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Publication number: 20140239748Abstract: 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: ApplicationFiled: January 30, 2014Publication date: August 28, 2014Applicant: Wittenstein AGInventors: Christian Herz, Ingolf Gröning, Kay-Horst Dempewolf
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Publication number: 20140239749Abstract: 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: ApplicationFiled: February 25, 2014Publication date: August 28, 2014Applicant: Wittenstein AGInventor: Daniel Fehn
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Patent number: 8783134Abstract: 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: GrantFiled: March 28, 2011Date of Patent: July 22, 2014Assignee: Wittenstein AGInventors: Frank Michel, Michael Schmidt, Thomas Bayer, Heiko Schreiber, Lars Estermann
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Patent number: 8656809Abstract: 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: GrantFiled: July 27, 2007Date of Patent: February 25, 2014Assignee: Wittenstein AGInventors: Thomas Bayer, Michael Schmidt
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Patent number: D704756Type: GrantFiled: November 27, 2012Date of Patent: May 13, 2014Assignee: Wittenstein AGInventor: Klaus Voelker
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Patent number: D733779Type: GrantFiled: May 29, 2013Date of Patent: July 7, 2015Assignee: Wittenstein AGInventor: Siegfried Ebner
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Patent number: D740867Type: GrantFiled: September 27, 2013Date of Patent: October 13, 2015Assignee: Wittenstein AGInventor: Nikolai Barta