DE102010015202A1 - Use of an at least partially radiation-crosslinked thermoplastic material in a motor vehicle - Google Patents
Use of an at least partially radiation-crosslinked thermoplastic material in a motor vehicle Download PDFInfo
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- DE102010015202A1 DE102010015202A1 DE102010015202A DE102010015202A DE102010015202A1 DE 102010015202 A1 DE102010015202 A1 DE 102010015202A1 DE 102010015202 A DE102010015202 A DE 102010015202A DE 102010015202 A DE102010015202 A DE 102010015202A DE 102010015202 A1 DE102010015202 A1 DE 102010015202A1
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- Germany
- Prior art keywords
- thermoplastic material
- material according
- thermoplastic
- motor vehicle
- radiation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
- F04D29/2233—Construction and assembly entirely open or stamped from one sheet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/085—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using gamma-ray
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
- B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3055—Cars
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
- F05D2300/433—Polyamides, e.g. NYLON
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
- F05D2300/603—Composites; e.g. fibre-reinforced
Abstract
Die Erfindung betrifft die Verwendung eines thermoplastischen Werkstoffs in einer Verbrennungskraftmaschine eines Kraftfahrzeuges oder an einer Komponente zumindest eines Nebenaggregates eines Kraftfahrzeuges, wie einer Kupplung, einem Getriebegehäuse, einer Flüssigkeitspumpe, einer Spannvorrichtung, einer Dichtung, einem Faltenbalg und/oder einer Magnetspule, wobei der Werkstoff zumindest abschnittsweise strahlenvernetzt ist.The invention relates to the use of a thermoplastic material in an internal combustion engine of a motor vehicle or on a component of at least one auxiliary unit of a motor vehicle, such as a clutch, a gear housing, a liquid pump, a tensioning device, a seal, a bellows and / or a magnetic coil, the material is at least partially crosslinked by radiation.
Description
Gebiet der ErfindungField of the invention
Die Erfindung betrifft die Verwendung eines thermoplastischen Werkstoffs in einer Verbrennungskraftmaschine eines Kraftfahrzeugs oder an einer Komponente zumindest eines Nebenaggregates eines Kraftfahrzeuges, wie einer Kupplung, einem Getriebegehäuse, einer Flüssigkeitspumpe, einer Spannvorrichtung, einer Dichtung, einem Faltenbalg und/oder einer Magnetspule.The invention relates to the use of a thermoplastic material in an internal combustion engine of a motor vehicle or to a component of at least one accessory of a motor vehicle, such as a clutch, a transmission housing, a liquid pump, a tensioning device, a seal, a bellows and / or a magnetic coil.
Das Verstärken von thermoplastischen Werkstoffen mittels einer Strahlenvernetzung ist bereits seit geraumer Zeit bekannt. Auch ein Strahlenvernetzen von thermoplastischen Elastomeren ist bereits seit einigen Jahren bekannt. Doch kommen solche Produkte im Wesentlichen nur außerhalb einer Kraftfahrzeugverwendung zum Einsatz. Als vorwiegendes Anwendungsfeld sind medizintechnische Gerätschaften und in der Elektroindustrie verwendete Produkte aufzuführen.The reinforcement of thermoplastic materials by means of radiation crosslinking has been known for some time. Radiation crosslinking of thermoplastic elastomers has also been known for some years. However, such products are essentially only used outside of a motor vehicle application. The predominant field of application is medical equipment and products used in the electrical industry.
In der Kraftfahrzeugindustrie werden im Regelfall höherwertige Materialien wie PPS-GF40 verwendet, die in Einzelfällen, wie etwa in der
Bei kleineren Getrieberädern für elektrische Zahnstangenlenkungen ist ein Nachvernetzen des verwendeten Werkstoffs etwa aus der
Allerdings ist es bisher unbekannt, bei Komponenten einer Verbrennungskraftmaschine oder Komponenten eines Nebenaggregates, wie einer Kupplung, einem Getriebegehäuse, einer Flüssigkeitspumpe, einer Spannvorrichtung, einer Dichtung, einem Faltenbalg und/oder einer Magnetspule, an die hohe Leistungsanforderung gestellt werden, kostengünstige und traditionell eher minderwertige Werkstoffe zu verwenden.However, it has hitherto been unknown in components of an internal combustion engine or components of an accessory, such as a clutch, a transmission housing, a liquid pump, a tensioning device, a gasket, a bellows and / or a solenoid to which high power requirement are placed, inexpensive and traditional rather to use inferior materials.
Hier ist es dann auch die Aufgabe der Erfindung, relativ preiswerte Werkstoffe für diese Anwendungsfälle zur Verfügung zu stellen, die dann aber auch gleichzeitig hoch belastbar sind. Teure Materialien, wie etwa PPS-GF40 sollen durch preiswerteres Material ersetzt werden. Teures verarbeitungskritisches PA46 soll ebenfalls durch preiswerte aber hoch belastbare Werkstoffe ersetzt werden. Der Werkstoff für die entsprechenden Anwendungsfälle soll auch eine Alternative zu bisher verwendeten glasfaserverstärktem Polyphtalamid bilden. Ferner soll die Vielseitigkeit erhöht werden, um auch eine Anwendbarkeit bei Dichtungen und Faltenbälgen zu ermöglichen. Eine leistungsgerechte Auslegung der Komponenten durch entsprechende Werkstoffe bei Niedrighaltung der Kosten soll dadurch ermöglicht werden.Here it is also the object of the invention to provide relatively inexpensive materials for these applications, which are then also highly resilient at the same time. Expensive materials, such as PPS-GF40 are to be replaced by cheaper material. Expensive processing-critical PA46 should also be replaced by inexpensive but highly resilient materials. The material for the corresponding applications should also form an alternative to previously used glass fiber reinforced polyphthalamide. Furthermore, the versatility is to be increased to allow also applicability in seals and bellows. A performance-oriented design of the components by appropriate materials at low cost is to be made possible.
Offenbarung der ErfindungDisclosure of the invention
Die Aufgabe der Erfindung wird dadurch gelöst, dass der Werkstoff zumindest abschnittsweise strahlenvernetzt ist.The object of the invention is achieved in that the material is at least partially radiation crosslinked.
Auf diese Weise können kostengünstige Werkstoffe für unterschiedliche Einsatzzwecke in unmittelbarer Nähe zur Verbrennungskraftmaschine in einem Kraftfahrzeug auf ein Niveau angehoben werden, so dass sie höheren Leistungsanforderungen standhalten. Mechanische, thermische und chemische Eigenschaften der Werkstoffe werden verbessert, ohne aber die Materialkosten besonders zu erhöhen. Die Markomoleküle werden mit einer energiereichen Strahlung, wie etwas Beta- oder Gammastrahlung beaufschlagt, um ein Aufspalten zu erwirken und nachfolgend das Eingehen kovalenter Bindungen zu ermöglichen, so dass die einzelnen Molekülketten miteinander verbunden werden. Auf diese Weise lassen sich belastbarere und gleichzeitig kostengünstigere Werkstoffe in einer Verbrennungskraftmaschine oder ihren Nebenaggregaten einsetzen.In this way, cost-effective materials for different purposes in the immediate vicinity of the internal combustion engine in a motor vehicle can be raised to a level such that they can withstand higher performance requirements. Mechanical, thermal and chemical properties of the materials are improved, but without increasing the material costs. The medullary molecules are exposed to high-energy radiation, such as beta or gamma radiation, to cause cleavage and subsequent covalent bond formation so that the individual molecular chains become interconnected. In this way, more resilient and cheaper materials can be used in an internal combustion engine or its ancillaries.
Vorteilhafte Ausführungsformen sind in den Unteransprüchen beansprucht und werden nachfolgend näher erläutert.Advantageous embodiments are claimed in the subclaims and are explained in more detail below.
So ist es von Vorteil, wenn der Werkstoff ein thermoplastisches Elastomer ist. Gerade bei einer Strahlenvernetzung von Dichtungen und/oder Faltenbälgen lässt sich ein solcher Werkstoff als Ersatz von Gummi vorteilhaft verwenden.So it is advantageous if the material is a thermoplastic elastomer. Especially with a radiation crosslinking of seals and / or bellows such a material can be used advantageously as a substitute for rubber.
Es ist auch von Vorteil, wenn der Werkstoff ein Polyamid ist, da dann Polyphenylsulfide ersetzbar sind. Auch Polyphtalamidwerkstoffe können ersetzt werden, was insbesondere bei sogenannten „Clutch sleeve cylinder-Gehäusen” in Kupplungsglocken als positiv zu bemerken ist. Um die Festigkeit und die mechanische Belastbarkeit weiter zu erhöhen, ist es von Vorteil, wenn der Werkstoff ein glasfaserverstärkter Werkstoff ist.It is also advantageous if the material is a polyamide, since then polyphenylsulfides are replaceable. Also Polyphtalamidwerkstoffe can be replaced, which is particularly noticeable in so-called "clutch sleeve cylinder housings" in clutch bells as positive. In order to increase the strength and mechanical strength further, it is advantageous if the material is a glass fiber reinforced material.
Als besonders vorteilhaft hat es sich herausgestellt, wenn der Werkstoff 15 bis 50 Gewichtsprozent Glasfasern aufweist. Gerade bei Wasserpumpenflügelrädern hat sich dieses Glasfaserverstärkungsverhältnis, insbesondere bei Thermoplasten wie Polyamid, z. B. PA66, als vorteilhaft herausgestellt. Wenn der Werkstoff ein PA66-Werkstoff ist, so kann insbesondere bei Kettenspannerwendungen von ausschussträchtigem hochviskosem PA66 auf niedrigviskoses strahlenvernetztes PA66 umgeschwenkt werden. Solche Materialien, insbesondere mit Glasfaserverstärkung, sind auch bei Getriebekäfigen einsetzbar.It has proven to be particularly advantageous if the material has 15 to 50 percent by weight glass fibers. Especially at Wasserpumpenflügelrädern this glass fiber reinforcement ratio, especially in thermoplastics such as polyamide, z. As PA66, found to be advantageous. If the material is a PA66 material, it is possible to switch over to low-viscosity, radiation-crosslinked PA66, especially in the case of chain tensioner applications of high-viscosity PA66 with a high viscosity. Such materials, in particular with glass fiber reinforcement, can also be used in gear cages.
Es ist grundsätzlich auch von Vorteil, wenn der Werkstoff niedrigviskose Eigenschaften aufweist, da bei einem solchen Material die Verarbeitbarkeit sehr gut ist und bei einer durchgeführten Strahlenvernetzung eine gleiche oder sogar bessere Belastbarkeit erzielt werden kann, als bei hochmolekularem Vergleichsmaterial. Die zu fertigen Bauteile lassen sich dann sehr genau und einfach bei guten Leistungscharakteristika gestalten.In principle, it is also advantageous if the material has low-viscosity properties, since with such a material the processability is very good and, if radiation crosslinking is carried out, an equal or even better load-bearing capacity can be achieved than with high-molecular comparison material. The finished components can then be designed very accurately and simply with good performance characteristics.
Um die Strahlenvernetzung besonders einfach und in großindustriellem Maßstab durchführen zu können, ist es von Vorteil, wenn das Material durch eine Beta- oder Gammastrahlung strahlenvernetzt ist.In order to be able to carry out the radiation crosslinking in a particularly simple and on a large industrial scale, it is advantageous if the material is radiation crosslinked by a beta or gamma radiation.
Besonders hohe Einsparpotentiale lassen sich realisieren, wenn der Werkstoff in einem Wasserpumpenflügelrad in einer Flüssigkeitspumpe eingesetzt ist.Particularly high savings can be realized when the material is used in a water pump impeller in a liquid pump.
Es ist auch von Vorteil, wenn der Werkstoff in einer Gleitschiene oder einer Führungsschiene der Spannvorrichtung, insbesondere einem Gleitbelag, einem den Gleitbelag tragenden Tragkörper, einem Reibkonus, einem Reibring und/oder einem Riemenspanner-Auge eingesetzt ist.It is also advantageous if the material is inserted in a slide rail or a guide rail of the clamping device, in particular a sliding lining, a supporting body carrying the sliding lining, a friction cone, a friction ring and / or a belt tensioner eye.
Durch die Erfindung wird es möglich, Anwendungen, wo nach allgemeinem Stand der Technik hochwertige und somit teure Werkstoffe zum Einsatz kommen, mit strahlenvernetzten preiswerteren Werkstoffen zu beschicken, die bisher als überfordert galten. Den preiswerteren Werkstoffen werden somit höherwertige Einsatzgebiete erschlossen.The invention makes it possible, applications where state-of-the-art high-quality and therefore expensive materials are used to feed with radiation-crosslinked cheaper materials that were previously considered overwhelmed. The less expensive materials are therefore used for higher-value applications.
Ein besonders großes Ratiopotential liegt bei Getriebeanwendungen, wie etwa Lagerkäfigen, bei Kettenspannerelementen, wie etwa Gleit- und Führungsschienen, bei Motoranwendungen, wie etwa im Spulenbereich zur Ventilbetätigung, bei Riementriebskomponenten, etwa bei Reibkonen, Reibringen oder Riemenspanner-Augen, bei hydraulischen Kupplungsbetätigungseinrichtungen, wie etwa bei Clutch sleeve cylinder-Gehäusen (CSC-Gehäusen) sowie bei Wasserpumpenflügelrädern vor. Hohe Belastungen, wie sie etwa auch beim Führen eines Riemens in heißem Motoröl entstehen, können dadurch ertragen werden.A particularly large Ratio potential is in transmission applications, such as bearing cages, in chain tensioner elements, such as sliding and guide rails, in engine applications, such as in the coil area for valve actuation, in belt drive components, such as friction cones, friction rings or belt tensioner eyes, in hydraulic clutch actuators, such as for example, with clutch sleeve cylinder housings (CSC housings) and water pump impellers. High loads, such as occur when driving a belt in hot engine oil, can be endured.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102005031589 A1 [0003] DE 102005031589 A1 [0003]
- DE 102007000923 A1 [0004] DE 102007000923 A1 [0004]
- DE 10319653 B4 [0004] DE 10319653 B4 [0004]
- DE 102007030941 A1 [0004] DE 102007030941 A1 [0004]
- DE 3602963 A1 [0004] DE 3602963 A1 [0004]
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010015202A DE102010015202A1 (en) | 2010-04-16 | 2010-04-16 | Use of an at least partially radiation-crosslinked thermoplastic material in a motor vehicle |
PCT/EP2011/054790 WO2011128204A2 (en) | 2010-04-16 | 2011-03-29 | Use of a thermoplastic material radiation-crosslinked at least in certain regions in a motor vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010015202A DE102010015202A1 (en) | 2010-04-16 | 2010-04-16 | Use of an at least partially radiation-crosslinked thermoplastic material in a motor vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010015202A1 true DE102010015202A1 (en) | 2011-12-15 |
Family
ID=44546099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102010015202A Ceased DE102010015202A1 (en) | 2010-04-16 | 2010-04-16 | Use of an at least partially radiation-crosslinked thermoplastic material in a motor vehicle |
Country Status (2)
Country | Link |
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DE (1) | DE102010015202A1 (en) |
WO (1) | WO2011128204A2 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3602963A1 (en) | 1986-01-31 | 1987-08-06 | Goetze Ag | Lip sealing ring |
DE102005031589A1 (en) | 2005-07-06 | 2007-01-11 | Schaeffler Kg | Wasserpumpenflügelrad |
DE102007030941A1 (en) | 2006-07-27 | 2008-01-31 | Behr Gmbh & Co. Kg | Method for improving the properties of a plastic impeller and fan |
DE10319653B4 (en) | 2003-05-02 | 2008-08-07 | Mahle Filtersysteme Gmbh | Oil or fuel filter housing of an internal combustion engine made of thermoplastic material |
DE102007000923A1 (en) | 2007-08-28 | 2009-03-05 | Zf Lenksysteme Gmbh | Method for manufacturing plastic gear wheel for electric rack and pinion steering of motor vehicles, involves obtaining gear wheel with high-energy radiation irradiated around secondary cross-linking of material |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006032751A1 (en) * | 2006-07-14 | 2008-01-31 | Veritas Ag | Flexible hose |
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2010
- 2010-04-16 DE DE102010015202A patent/DE102010015202A1/en not_active Ceased
-
2011
- 2011-03-29 WO PCT/EP2011/054790 patent/WO2011128204A2/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3602963A1 (en) | 1986-01-31 | 1987-08-06 | Goetze Ag | Lip sealing ring |
DE10319653B4 (en) | 2003-05-02 | 2008-08-07 | Mahle Filtersysteme Gmbh | Oil or fuel filter housing of an internal combustion engine made of thermoplastic material |
DE102005031589A1 (en) | 2005-07-06 | 2007-01-11 | Schaeffler Kg | Wasserpumpenflügelrad |
DE102007030941A1 (en) | 2006-07-27 | 2008-01-31 | Behr Gmbh & Co. Kg | Method for improving the properties of a plastic impeller and fan |
DE102007000923A1 (en) | 2007-08-28 | 2009-03-05 | Zf Lenksysteme Gmbh | Method for manufacturing plastic gear wheel for electric rack and pinion steering of motor vehicles, involves obtaining gear wheel with high-energy radiation irradiated around secondary cross-linking of material |
Also Published As
Publication number | Publication date |
---|---|
WO2011128204A3 (en) | 2012-04-12 |
WO2011128204A2 (en) | 2011-10-20 |
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R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120824 Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120824 |
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