Patents Assigned to CeramTec GmbH
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Patent number: 9598319Abstract: According to the state of the art, piezoceramic multi-layer elements are sintered in air at temperatures of approximately 1100 DEG C or higher. Therefore, only a noble metal having a high melting temperature can be used as the inner electrode. Non-noble metals would oxidize. Therefore, a silver-palladium alloy having up to 40% palladium is normally used. However, such a measure is associated with high material costs. Lower melting temperatures of the inner electrode material, however, also require a ceramic material having correspondingly low sintering temperatures. The invention therefore proposes that an electrically non-conductive sintering additive added be added to the base material, and that the inner electrode comprise silver, preferably pure silver, as the main material component thereof, and an electrically non-conductive material component and/or a metal alloy or metal oxide mixture.Type: GrantFiled: October 20, 2008Date of Patent: March 21, 2017Assignee: CeramTec GmbHInventors: Reiner Bindig, Hans-Jurgen Schreiner
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Publication number: 20160367374Abstract: The present invention relates to implants, methods for the production thereof and the use thereof.Type: ApplicationFiled: December 5, 2014Publication date: December 22, 2016Applicant: CERAMTEC GMBHInventors: Heinrich WECKER, Alfons KELNBERGER, Frank ZIERMANN
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Patent number: 9486857Abstract: The invention relates to a ready-to-use ceramic blanking die (1), which is produced by sintering a blank, as an indexable insert, comprising an upper face and a lower face (2, 3) which each have a support surface (4) for installation in a tool holder of a cutting tool, lateral surfaces (5) that connect the upper and lower faces (2, 3), and cutting edges (6) for machining workpieces.Type: GrantFiled: December 1, 2011Date of Patent: November 8, 2016Assignee: CeramTec GmbHInventor: Uwe Stemmer
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Patent number: 9475123Abstract: A cutting tool for radial and axial recessing and for lateral motion for so-called grooving of primarily metallic materials. The cutting tool has a clamping holder and a cutting element base, fastened to the clamping holder, on which a cutting element rests. The cutting element is pressed onto the cutting element base by a clamping finger of a clamping claw, and the cutting element being guided on the cutting element base with a prism.Type: GrantFiled: August 3, 2011Date of Patent: October 25, 2016Assignee: CeramTec GmbHInventors: Nebojsa Sevdic, Uwe Stemmer, Heinz Kressel
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Patent number: 9478726Abstract: The invention relates to actuator module (22) having a piezoceramic multilayer actuator (1) arranged in a casing (23). In order to avoid an increase in conductivity and hence rising leakage current at the actuator surface even after a long period of use, the invention proposes that the casing (23) is hermetically sealed, and a chamber (24) is arranged between the multilayer actuator (1) and the casing (23), which chamber is entirely or partially filled with a medium (21) that chemically transforms and/or binds water.Type: GrantFiled: January 10, 2013Date of Patent: October 25, 2016Assignee: CeramTec GmbHInventors: Reiner Bindig, Hans-Jürgen Schreiner
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Patent number: 9394203Abstract: The invention relates to molded functional bodies made of highly thermally conductive materials, namely aluminum nitride, to a method for the production thereof by way of extrusion, and to the use thereof.Type: GrantFiled: December 2, 2010Date of Patent: July 19, 2016Assignee: CeramTec GmbHInventors: Gerhard Günthner, Axel Schöler, Alexander Dohn, Alfred Thimm
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Patent number: 9387459Abstract: The invention relates to a substrate material, which is highly porous and which is provided with a mechanically stable, component-penetrating framework structure made of alpha-Al2O3, to methods for producing the substrate material, and to the use of the substrate material.Type: GrantFiled: April 23, 2012Date of Patent: July 12, 2016Assignee: CeramTec GmbHInventors: Roland Heinl, Peter Schröter, Klaus Stöckl
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Publication number: 20160195439Abstract: A method, a device and use for measurement of a force with a pressure sensor made of a piezoelectric material. The change in the capacitance of the pressure sensor is used for force measurement so that no load amplifier is necessary for measurement and as a result the measuring system as a whole is miniaturized.Type: ApplicationFiled: August 18, 2014Publication date: July 7, 2016Applicant: Ceramtec GMBHInventors: Reiner Bindig, Tobias Schmidt, Hans-Jürgen Schreiner
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Patent number: 9308092Abstract: The invention relates to a package for receiving an adapter sleeve for a hip endoprosthesis, the hip endoprosthesis comprising a ball head which has to be pushed onto the adapter sleeve with a defined pushing-on force. For simplification and secure fastening of the ball head on the adapter sleeve, it is proposed according to the invention that a device for the mounting of the ball head on the adapter sleeve is integrated in the package and this device comprises indicating elements which indicate that the defined pushing-on force has been reached when the ball head is pressed onto the adapter sleeve.Type: GrantFiled: May 2, 2007Date of Patent: April 12, 2016Assignee: CeramTec GmbHInventors: Martin Dietrich, Patricie Merkert, Roman Preuss, Paul Silberer, Heinrich Wecker
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Patent number: 9301855Abstract: An insertion instrument for hip endoprosthetics for inserting socket inserts into endoprosthetic hip sockets having holding claws which are connected to a substantially ring-shaped support element through spring elements, wherein the insertion instrument can be placed on the socket insert and can be connected to said socket insert through the holding claws. In order for the user to receive direct palpatory information about the events in the operation areas and to not suffer a perceived loss of control, it is proposed that the support element surround a freely accessible, substantially circular effective insertion area, the center point of which is located on the longitudinal axis of the insertion instrument.Type: GrantFiled: December 15, 2009Date of Patent: April 5, 2016Assignee: CeramTec GmbHInventors: Roman Preuss, Michael Kuntz, Tobias Weiss, Ralph Autenrieth, Götz Griesmayr, Manuela Muhr-Schenk
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Patent number: 9301362Abstract: In order to supply power and control the power supplied to an LED (43), in particular an LED (43) comprising a ceramic support element (4, 32), an LED driver circuit (17) is designed to regulate the supply current for the LED (43) in accordance with the temperature of the support element (4, 32).Type: GrantFiled: October 14, 2011Date of Patent: March 29, 2016Assignee: CeramTec GmbHInventors: Alexander Dohn, Christian Schnagl, Alfred Thimm, Karl Degelmann, Ewald Sutor
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Patent number: 9289313Abstract: An insertion instrument for instrumented insertion of a socket inset (4) with a spherical cap (20) into a hip socket (5) of a hip-joint prosthesis, having an impacting instrument (1) with a handle (7), at one end of which a holding tool for the socket inset (4) is located. In order to avoid tilting of the socket inset during insertion, it is proposed that the one end (8) of the impacting instrument (1) has a spherical shape and is part of the holding tool, and the holding tool furthermore comprises an impacting head (2), which is designed as a separate component and received the spherical end (8) of the impacting instrument (1) in an articulated manner, and an insertion aid (3), which is designed as a separate component and serves to hold the socket inset (4) on the outer geometry of the impacting head (2), and the impacting head (2) can be connected to the spherical end (8) to form a ball joint.Type: GrantFiled: June 22, 2011Date of Patent: March 22, 2016Assignee: CeramTec GmbHInventors: Roman Preuss, Heike Wolf, Tobias Weiss, Thomas Kilchenmann, Götz Griesmayr, Manuela Muhr-Schenk
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Patent number: 9289830Abstract: A cutting tool has a recess for receiving a cutting insert having a clamping depression on the rake face. The cutting insert is held in the carrier tool by a clamping finger having a lug. The clamping finger being secured on the carrier tool via a clamping bolt so that when tightening the clamping bolt, the clamping finger pulls the cutting insert into the recess. A sickle-shaped engagement element engages into the clamping depression of the cutting insert being arranged on the lug. The clamping bolt has a clamping head overhanging its shank. The clamping head is seated on an angled locating surface of the clamping finger with respect to the axis of the clamping bolt, wherein said surface is arranged so compression force of the clamping finger on the cutting insert is enhanced. The lug has a clamping surface for bearing on the rake face of the cutting insert.Type: GrantFiled: August 4, 2011Date of Patent: March 22, 2016Assignee: CeramTec GmbHInventor: Raouf Ben Amor
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Patent number: 9266173Abstract: The invention relates to a milling tool (1) having a length ltotal and diameter dtotal and having blades (2) for the milling of mostly metal workpieces. In order to prevent an uncontrolled failure of the milling tool, it is proposed that the blades (2) are partially or entirely made of polycrystalline cubic boron nitride (PcBN) or polycrystalline diamond (PCD) and the diameter dtotal of the milling tool lies between 7 mm and 40 mm.Type: GrantFiled: February 28, 2012Date of Patent: February 23, 2016Assignee: CeramTec GmbHInventor: Raouf Ben Amor
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Publication number: 20160030180Abstract: A ceramic component to be securely connected to an additional component in force-locked manner. A joint prosthesis comprising a ceramic sphere (1), a metallic sleeve (2) and a base plate (3) with a cylindrical projection. The connection between the ceramic sphere and the base plate or shaft (7) is secured by a screw (6).Type: ApplicationFiled: April 7, 2014Publication date: February 4, 2016Applicant: CeramTec GmbHInventors: Heinrich Wecker, Alfons Kelnberger, Christoph Krause, Frank Ziermann
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Patent number: 9237955Abstract: An intervertebral disc endoprosthesis for implantation in the spinal column, with an upper end plate and a lower end plate for securing respectively to the bones of the vertebral body, and with a slide bearing which is arranged between the end plates and is composed of slide bodies that are designed to slide on each other. both end plates are made of plastic and the slide bodies are made of ceramic, the slide bodies are encapsulated by the plastic of the end plates and the surface areas of the slide bodies encapsulated by the plastic of the end plates have surface area enlargements by comparison with flat surfaces. To ensure that the slide bodies are connected fixedly to the end plates in a manner secure against twisting, it is proposed that the surface area enlargements are elevations or depressions on the slide bodies.Type: GrantFiled: July 1, 2009Date of Patent: January 19, 2016Assignee: CeramTec GmbHInventors: Christine Niess, Roman Preuss, Norbert Schneider, Matthias Grassel
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Patent number: 9227174Abstract: The invention relates to a substrate material, which is highly porous and which is provided with a mechanically stable, component-penetrating framework structure made of alpha-Al2O3, to methods for producing the substrate material, and to the use of the substrate material.Type: GrantFiled: April 23, 2012Date of Patent: January 5, 2016Assignee: CeramTec GmbHInventors: Roland Heinl, Peter Schröter, Klaus Stöckl
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Patent number: 9227248Abstract: A metal cutting tool has a supporting tool, which has a recess for accommodating a cutting plate. The cutting plate is provided with a damping trough, which is held in the supporting tool by a clamping claw. The clamping claw is fixed against the supporting tool by a clamping screw. A pressure piece is placed on the clamping claw and its underside facing the cutting plate is provided with a cam, which is in contact with the clamping trough and the clamping claw pulls the pressure piece toward the clamping screw.Type: GrantFiled: December 4, 2013Date of Patent: January 5, 2016Assignee: CeramTec GmbHInventors: Otto Eder, Wolfgang Zitzlaff
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Patent number: 9196815Abstract: The invention relates to a force module (20) for generating forces in a highly dynamic manner by assembling a plurality of piezo actuators (1) for connecting to a voltage source. To enable the force module (20) to generate forces in the range of a few 100 kN in a highly dynamic and spatially resolved manner, according to the invention it is proposed that the force module (20) consists of at least two sub-modules (21), each having at least two piezo actuators (1) and their electrical contacting elements, and a controlling and protection module (16) for the piezo actuators (1) in the sub-modules (21), wherein all electric contacting elements of the sub-modules (21) are fed into the controlling and protection module (16).Type: GrantFiled: February 23, 2012Date of Patent: November 24, 2015Assignee: CeramTec GmbHInventors: Alfons Kelnberger, Hans-Jürgen Schreiner, Reiner Bindig, Jürgen Brandt
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Patent number: 9089429Abstract: A socket or socket insert for a hip joint prosthesis, the shaft of which can be coupled with a ball head which in turn can be inserted in a rotatable manner in the hemispherical recess of the socket insert wherein the shaft can be implanted in the femur and the socket insert can be implanted directly or via a hip socket in the pelvic bone. To avoid squeaking, the socket and/or the socket insert are asymmetrically in their inner or outer geometries.Type: GrantFiled: August 6, 2007Date of Patent: July 28, 2015Assignee: CeramTec GmbHInventors: Roman Preuss, Thomas Pandorf, Patricie Merkert, Heike Idink, Martin Dietrich