Patents Assigned to Wittenstein AG
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Publication number: 20130255421Abstract: 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: ApplicationFiled: March 25, 2013Publication date: October 3, 2013Applicant: Wittenstein AGInventors: MICHAEL SCHMIDT, HEIKO SCHREIBER, FRANK MICHEL, THOMAS BAYER
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Patent number: 8480528Abstract: A coaxial transmission, especially a hollow shaft drive, comprising a driving element (7) and a driven element (3), a plurality of radially mobile toothed quadrants (5) providing a gear ratio and transmitting a driving torque between the driving element (7) and the driven element (3). An internal gear (1) or especially the housing for receiving the inner gearing of the internal gear (13) are configured as a multipart structure.Type: GrantFiled: April 14, 2008Date of Patent: July 9, 2013Assignee: Wittenstein AGInventors: Thomas Wilhelm, Michael Schmidt, Thomas Bayer
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Patent number: 8443966Abstract: A device for transporting freight, especially freight containers in the cargo compartments of aircraft, especially to a power drive unit (PDU) having a drive roller (5) received in a frame (1) and a lifting unit (6) wherein the lifting unit (6) comprises at least one drive unit (9) for listing the drive roller (5) on both sides.Type: GrantFiled: May 9, 2008Date of Patent: May 21, 2013Assignee: Wittenstein AGInventor: Alexander Eck
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Publication number: 20130072932Abstract: 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: ApplicationFiled: September 13, 2012Publication date: March 21, 2013Applicant: WITTENSTEIN AGInventor: Roman Stauch
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Patent number: 8398327Abstract: A method for producing a shaft-hub connection, in particular between a helically toothed pinion (2) and a hub (6), a partial section (3) of the helically toothed running toothing (4) of the pinion is used, during the connection to the hub, as a type of chip-removing cutting tool, by virtue of the partial section cutting with the profiles of its teeth into the hub in an axially aligned fashion.Type: GrantFiled: January 30, 2008Date of Patent: March 19, 2013Assignee: Wittenstein AGInventors: Walter Lang, Karl-Georg Melber, Christof Old
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Patent number: 8386018Abstract: A medical device for determining the position of intracorporeal implants such as fixation systems, plates or the like, comprises at least one impedance-measuring device and an ultrasound device which are both connected to at least one intracorporeal probe, the impedance-measuring device being additionally equipped with at least one connector for connection to the implant. The device is suitable for determining the position of pedicle screws and the like in a spinal column fixation system with metal rods as stabilizers.Type: GrantFiled: December 7, 2007Date of Patent: February 26, 2013Assignee: Wittenstein AGInventors: Roman Stauch, Miroslaw Wrobel
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Publication number: 20130000431Abstract: 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: ApplicationFiled: June 28, 2012Publication date: January 3, 2013Applicant: WITTENSTEIN AGInventor: Heiko Schreiber
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Patent number: 8307738Abstract: A coaxial transmission, especially a hollow shaft transmission for industrial drive engineering, having a high power density. The transmission comprises an input element (7), an element (3) and an output element, a drive torque being multiplied and transmitted between the input element (7) and the output element via a plurality of radially mobile toothed sections (5). At least one toothed section (5) has a bearing element (11) which is enlarged in its effective zone with respect to an input element (7).Type: GrantFiled: February 25, 2008Date of Patent: November 13, 2012Assignee: Wittenstein AGInventors: Michael Schmidt, Thomas Wilhelm, Thomas Bayer
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Patent number: 8302766Abstract: A device for transporting freight, especially freight containers in the cargo compartments of aircraft, especially to a power drive unit (PDU) having a drive roller (3) received in a frame (1) wherein the at least one drive roller (3) carrying the drive roll (4) placed thereon is mounted so as to be pivoted relative to the frame for the purpose of replacing the drive roll (4).Type: GrantFiled: August 4, 2011Date of Patent: November 6, 2012Assignee: Wittenstein AGInventors: Alexander Eck, Markus Spinner
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Patent number: 8276450Abstract: A method for optimally operating mechanically loaded, moved, particularly rotating components, such as gearboxes, wherein in the operating stage damage accumulation is used to evaluate the influence of a collective load on the lifespan of the loaded rotating components, the moving components (1) being divided into a plurality of segments (5-10) for determining individual collective loads (6; 18).Type: GrantFiled: April 2, 2008Date of Patent: October 2, 2012Assignee: Wittenstein AGInventors: Michael Engelbreit, Thomas Bayer
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Patent number: 8272269Abstract: The present invention relates to a method for examining a medium (19), comprising the following steps of: transmitting a measurement input signal (4) comprising at least one measurement frequency, wherein the measurement input signal (4) is coupled into a medium (19); receiving a measurement output signal (9) emerging from the medium (9); transmitting a counter measurement input signal (13) comprising at least one counter measurement frequency, wherein the counter measurement frequency essentially corresponds to the measurement frequency, and wherein the counter measurement input signal (13) is coupled into the medium (19) simultaneously and in an opposite direction to the measurement input signal (4); receiving a counter measurement output signal (16) emerging from the medium (19); calculating a Doppler correction by comparing the counter measurement input signal (13) with the counter measurement output signal (16) in terms of the counter measurement frequency and by comparing the measurement input signal (4Type: GrantFiled: April 28, 2010Date of Patent: September 25, 2012Assignee: Wittenstein AGInventor: Miroslaw Wrobel
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Publication number: 20120225748Abstract: A machine element, in particular ring gear for a transmission (1, 31) having an internal toothing arrangement (40), wherein the machine element is divided, in a plane perpendicular to an axis (22) of the machine element, into at least two component pieces (11, 12) which can be displaced relative to one another and which are mounted on a common carrier element (20), having an actuator (15-18) for displacing a first of the component pieces (11, 12) relative to the carrier element (20).Type: ApplicationFiled: January 4, 2012Publication date: September 6, 2012Applicant: WITTENSTEIN AGInventors: Frank Michel, Thomas Wimmer
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Patent number: 8256327Abstract: A coaxial gear set, in particular a hollow shaft gear set for industrial drive technology, having high power density, comprising a drive element (7), an element (3), and an output element, with a gear ratio and a transmission of a drive torque occurring between the drive element (7) and the output element via a plurality of radially movable tooth segments (5), an outer tooth flank contour (11.1, 11.2) of the tooth contour (6) of the tooth segments (5) and/or a flank contour (12.1, 12.2) of a gearing (13) of an inner gearing (15) of an internal wheel (1), relative to a gear axis (M), a tooth contour that allows surface contact in the engagement area comprising a logarithmic spiral.Type: GrantFiled: March 5, 2008Date of Patent: September 4, 2012Assignee: Wittenstein AGInventor: Heiko Schreiber
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Patent number: 8252063Abstract: A growing prosthesis comprising a joint replacement part, a prosthesis stem, a stem-anchoring element, and an element with corresponding drive provided for the lengthening of the growing prosthesis. The element provided for the lengthening of the growing prosthesis is a spindle element arranged in the stem-anchoring element.Type: GrantFiled: March 3, 2010Date of Patent: August 28, 2012Assignee: Wittenstein AGInventor: Roman Stauch
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Patent number: 8220363Abstract: A conical gear drive comprising an input element that interacts with a truncated conical gear via which an output element can be driven. A number of different output elements or variably selectable output elements should be able to be connected to the truncated conical gear drive.Type: GrantFiled: November 19, 2010Date of Patent: July 17, 2012Assignee: Wittenstein AGInventors: Thomas Bayer, Karl-Georg Melber, Michael Engelbreit, Thomas Wilhelm
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Publication number: 20120053633Abstract: Device for the relative movement of bones, in particular for the treatment of scoliosis in humans, with a first shaft element (1), a second shaft element (2), which is connected movably to the first shaft element (1), and an electric motor, which is connected to the first shaft element (1), wherein an output shaft of the electric motor is operatively connected to the second shaft element (2) in order to permit a movement of the shaft elements (1, 2) relative to each other, wherein the electric motor (6) is arranged lengthways adjacent to at least one of the shaft elements (1, 2).Type: ApplicationFiled: August 25, 2011Publication date: March 1, 2012Applicant: WITTENSTEIN AGInventor: Roman Stauch
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Publication number: 20110284345Abstract: A device for transporting freight, especially freight containers in the cargo compartments of aircraft, especially to a power drive unit (PDU) having a drive roller (3) received in a frame (1) wherein the at least one drive roller (3) carrying the drive roll (4) placed thereon is mounted so as to be pivoted relative to the frame for the purpose of replacing the drive roll (4).Type: ApplicationFiled: August 4, 2011Publication date: November 24, 2011Applicant: WITTENSTEIN AGInventors: Alexander Eck, Markus Spinner
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Patent number: 8061924Abstract: In the case of a clamping element for connecting a motor shaft to a transmission via a hub (3), in particular transmission component, such as transmission drive shaft, sun wheel, clutch or the like, with at least one fixing element (7) being inserted radially in the clamping element, the fixing element (7) is at the same time to form both a tangential element for securing the clamping element (R1, R2) against rotation and an axial element for securing the clamping element (R1, R2) with respect to the hub (3).Type: GrantFiled: November 2, 2009Date of Patent: November 22, 2011Assignee: Wittenstein AGInventors: Walter Lang, Christof Old
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Publication number: 20110259144Abstract: 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: ApplicationFiled: March 28, 2011Publication date: October 27, 2011Applicant: WITTENSTEIN AGInventors: Frank Michel, Michael Schmidt, Thomas Bayer, Heiko Schreiber, Lars Estermann
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Patent number: D683775Type: GrantFiled: November 30, 2012Date of Patent: June 4, 2013Assignee: Wittenstein AGInventor: Philipp Farrenkopf