EP3710721A1 - Kolbenstange mit kolben, insbesondere für einen fluidtechnischen aktor und verfahren zum herstellen einer kolbenstange mit kolben - Google Patents
Kolbenstange mit kolben, insbesondere für einen fluidtechnischen aktor und verfahren zum herstellen einer kolbenstange mit kolbenInfo
- Publication number
- EP3710721A1 EP3710721A1 EP18803351.8A EP18803351A EP3710721A1 EP 3710721 A1 EP3710721 A1 EP 3710721A1 EP 18803351 A EP18803351 A EP 18803351A EP 3710721 A1 EP3710721 A1 EP 3710721A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- piston rod
- plastic
- metal layer
- layer
- 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.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000008569 process Effects 0.000 title abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 62
- 239000004033 plastic Substances 0.000 claims description 54
- 229920003023 plastic Polymers 0.000 claims description 54
- 239000002184 metal Substances 0.000 claims description 37
- 229910052751 metal Inorganic materials 0.000 claims description 37
- 239000011265 semifinished product Substances 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 6
- 229920002647 polyamide Polymers 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 240000006829 Ficus sundaica Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
- F15B2215/305—Constructional details thereof characterised by the use of special materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/40—Multi-layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
Definitions
- Piston rod with piston in particular for a fluidic actuator and method for producing a piston rod with piston
- the invention relates to a piston rod with piston for a fluidic actuator and a method for producing a piston rod with piston.
- Fluid power actuators whether operated hydraulically or pneumatically, are known from the prior art, which are composed of several components and have an integrally formed piston rod with pistons, s. for example EP 0 022 769 Bl.
- the production of such pistons is usually carried out by a massive forming and / or a machining of a cylindrical, metallic base body (blank).
- the introduction of functional surfaces for functional elements, in particular for guiding and / or sealing elements in the region of the lateral surface of the piston, is also complicated and expensive.
- the piston is equipped with functional elements, such as guide ring (s), seal (s) and / or scraper.
- Fluidic actuators are charged very dynamically over their service life, so that large moving masses are usually undesirable. Adding to disadvantage can be undesirable frictional losses and / or friction vibrations, which can occur due to the different thermal expansions of the individual components.
- pistons or sealing disks or disks in conjunction with pistons made of a solid base material in conjunction with plastic parts from DE 2163840A, DE 2454377A, US 2310917 and GB 572055 are known.
- the invention is based on the object to provide a weight-optimized and / or functionally integrated piston rod with piston and a method for its production. This object is achieved by a piston rod with piston having the features of patent claim 1. Further advantageous embodiments of the invention are listed in the dependent claims.
- a piston rod with piston in particular for a fluidic actuator, wherein the piston is connected to the piston rod, wherein the piston is formed from a hybrid material is provided.
- the inventors have found that by providing a piston of a hybrid material, positive influence on the moving mass can be made, particularly when using suitable materials that are made into a piston and less weight compared to metallic, solid Have piston.
- the hybrid material also allows the integration of functions.
- the hybrid material according to a first embodiment comprises metal and plastic.
- the plastic can contribute to reducing the mass and / or functional integration of the piston compared to a monolithic metal piston with the same geometry.
- plastic has a lower thermal expansion than metallic materials and has damping properties.
- the piston has at least one metal layer and at least one plastic layer, which in particular is adhesively bonded to the metal layer.
- the entire piston or the entire piston of a semi-finished which is a composite material of at least 2 layers.
- this composite material has at least one metal layer and at least one plastic läge, which are connected cohesively over their entire surface.
- the at least one metal layer and the at least one cohesively connected to the metal layer plastic could be inexpensive, for example, if the metal layer is provided band-shaped and the Kunststoffst off preferably continuously applied to the metal layer.
- the plastic layer can be applied as a film, for example by lamination, or as a wet film, for example in the coil coating process, with subsequent drying on the metal layer.
- this embodiment is a band-shaped metal layer which preferably has over its entire surface a film or a film of plastic, which represents the plastic layer. If necessary, prior to application, the metal side / surface to which the plastic layer is to be applied, with an adhesion promoter to increase the adhesion between metal and plastic are coated.
- the composite material thus has at least 3 layers: a metal layer provided with a bonding agent and thereon a plastic layer, wherein the layers are bonded to one another in a material-locking manner over the entire surface.
- Suitable metal layers are aluminum, magnesium and preferably steel materials, in particular with a thickness, for example, between 0.2 and 6.0 mm, in particular between 0.2 and 4.0 mm, 0.2 and 2.0 mm, 0 , 2 and
- Thermoplastics for example based on polyamide (PA), polyethylene (PE) or a mixture thereof, in particular with a thickness of, for example, between 0.005 and 2.0 mm, preferably 0.005 and
- a hybrid material or a semifinished product or composite material to be used according to the invention is a composite, that is to say a material which has at least two materials with different material properties that are materially bonded to one another over their entire surface and / or consists thereof.
- the hybrid material therefore has different material properties than its individual components.
- the semifinished product is deformable, in particular three-dimensionally deformable, without any delamination of the individual layers taking place.
- the piston is cup-shaped, in particular rotationally symmetrical with an outer peripheral collar region or disk-shaped and has in the middle a central opening for receiving the piston rod.
- the piston has a collar area which runs around the opening on the inside and which, due to a certain contact surface with the piston rod, provides improved stability and / or rigidity and, associated therewith, higher operational reliability.
- the piston can be materially, positively and / or non-positively connected to the piston rod / be. Cohesively example, by welding, soldering or gluing, positively, for example by riveting, and / or non-positively, for example by pressing or screwing.
- the Kunststoffst was off in the cup-shaped configuration of the piston arranged on the side facing away from the piston rod.
- the piston is in a cylinder tube / hollow Cylinder of a fluidic actuator inserted respectively receivable, so that the outer circumferential collar region as a lateral surface of the cup-shaped piston assumes the function of the support respectively leadership within the cylinder tube / hollow cylinder.
- the plastic layer arranged on the side facing away from the piston rod can assume a sealing and / or sliding function, so that no further additional components, such as one or more seals, are necessary.
- the or a further plastic läge be arranged in the cup-shaped configuration of the piston on the piston rod side facing.
- the plastic layer can be connected to a further material, in particular a further plastic material, for example to provide a stable and / or rigid piston.
- the plastic Läge can accordingly act as a coupling layer between the other material and the metal layer.
- the further material in particular the further plastic material is molded or molded or molded.
- the injection molding or molding is a commercially established process that can be operated economically.
- the further material come thermoplastics, - for example polyethylene (PE), polyamide (PA, PA6, PA66), polypropylene (PP), polystyrene (PS) -, thermoplastic elastomers or elastomers, in particular, the other materials may also be filled, preferably be reinforced with fibers and / or fillers.
- the further material in particular the further plastic material, preferably has at least one functional surface at least in sections. This functional surface is used to hold at least one functional element, such as guide bands, seals, scrapers, etc.
- the further material in particular the further plastic material have at least one structure increasing the stiffness.
- the further material also (other) components, in particular components, such as sensor components can be integrated.
- the invention relates to a method for producing a piston rod with piston, in particular for a fluidic actuator, comprising the following steps:
- the invention provides an economical method for producing a piston rod with pistons, in particular for a fluidic actuator, in order to be able to produce weight-optimized and / or functionally integrated piston rods with pistons which have a reduced mass compared to the prior art and / or Enable integration of functions.
- a first embodiment of the method is after molding of the semifinished product to a piston another material, in particular a further plastic material to the outwardly or inwardly facing plastic läge of the piston preferably molded or molded or molded.
- At least one functional surface and / or at least one stiffness-increasing structure are integrated in the further material, in particular in the further plastic material.
- the further material in particular in the further plastic material.
- Fig. 2 is a schematic partial sectional view of a first embodiment of a
- FIG. 6 an embodiment of a method according to the invention with reference to a schematic flow chart.
- FIG. 1 shows a schematic representation of a semifinished product which has at least one metal layer (1.1) and at least one plastic layer (1.2) which is materially bonded to the metal layer (1.1).
- the metal layer (1.1) preferably consists of a steel material, which is particularly preferably provided on one or both sides with a corrosion protection coating and in particular has a thickness between 0.2 and 1.5 mm.
- the plastic läge (1.2) is preferably made of a thermoplastic material and in particular has a thickness between 0.01 and 1.0 mm.
- the semifinished product is a prefabricated board, which is initially separated from a band-shaped laminate (metal layer / plastic layer) and cut to size, in particular to the required development for the production of the piston (1).
- a piston (1) is formed, for example deep-drawn, which cup-shaped, in particular rotationally symmetrical about a symmetry axis (S) is formed and an outer circumferential collar portion (1.4), s. Fig. 2.
- the piston (1) has in the middle a central opening (1.5) for receiving a piston rod (2), wherein an around the opening (1.5) inside circumferential collar portion (1.3) is formed.
- the plastic layer (1.2) is arranged on the side facing away from the piston rod (2).
- the piston (1) in particular with a piston rod (2), can be inserted into a cylinder tube / hollow cylinder (5) of a fluid-technical actuator (10), so that the outer peripheral collar region (1.4) serves as a lateral surface of the piston as a function of the support respectively guide can take over within the cylinder tube / hollow cylinder.
- the connection between piston (1) and piston rod (2) can be material, positive and / or non-positive.
- the piston (1) can be pressed onto the piston rod (2), optionally an additional adhesive connection can lead to an increase in the frictional connection.
- the plastic läge or another plastic layer may be arranged on the piston rod side facing.
- Die Plastic layer (1.2) acts as a coupling layer between the further material (3) and the metal layer (1.1).
- the further material (3), in particular the further plastic material may be molded or molded or molded.
- the material (3) consists for example of a thermoplastic material - for example polyethylene (PE), polyamide (PA, PAß, PA66), polypropylene (PP), polystyrene (PS) -, thermoplastic elastomer or elastomer and may also be filled in particular.
- the material (3) encloses, at least in sections, preferably completely, the collar region (1.4) of the piston (1) which surrounds the outside and at least partially the collar region (1.3) of the piston (1) which encircles the circumference.
- the further material (3) has at least sections functional surfaces (3.1), Fig. 4.
- the functional surfaces (3.1) are used to hold functional elements (4), such as guide bands, seals, scrapers, etc., Fig Increasing the rigidity of the piston (1), the further material (3) have stiffness-increasing structures, such as rib-shaped structures.
- FIG. 5 shows an exemplary embodiment of a fluid power actuator (10).
- FIG. 6 shows a schematic flow diagram of an exemplary embodiment for the production of a piston (1).
- a semifinished product comprising at least one metal layer (1.1) and at least one integral with the metal layer cohesively connected Kunststoffst-off (1.2) is provided.
- the semifinished product is formed in step B to a cup-shaped piston (1) in such a deep drawn that the metal layer (1.1) facing inward and the plastic layer (1.2) to the outside.
- a central opening (1.5) is introduced before, during or after molding.
- a further material (3) in particular a further plastic material, is preferably injection-molded or molded or molded onto the outwardly facing plastic layer (1.2) of the piston (1).
- step D a piston rod (2) is received in the central opening (1.5) and the piston (1) with the piston rod and form-fitting and / or non-positively connected.
- step F it means that the piston (1) or the piston rod (2) with piston (1) is inserted into a cylinder tube (5), the piston (1) and / or the piston rod (2) with functional elements (4) are fitted (step E).
- the invention is not limited to the embodiments shown, but the individual features can be combined with each other.
- the piston rod (2) according to the invention with piston (1) is individually scalable and can be used in all fluid-actuated actuators (10).
- the connection between the piston and the piston rod does not necessarily have to take place via a central opening introduced into the piston, but the piston and piston rod can also be connected to one another in a stable and / or rigid manner, in particular in a material-positive and / or non-positive manner.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Actuator (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017220204.1A DE102017220204A1 (de) | 2017-11-14 | 2017-11-14 | Kolbenstange mit Kolben, insbesondere für einen fluidtechnischen Aktor und Verfahren zum Herstellen einer Kolbenstange mit Kolben |
| PCT/EP2018/080246 WO2019096617A1 (de) | 2017-11-14 | 2018-11-06 | Kolbenstange mit kolben, insbesondere für einen fluidtechnischen aktor und verfahren zum herstellen einer kolbenstange mit kolben |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3710721A1 true EP3710721A1 (de) | 2020-09-23 |
Family
ID=64308715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18803351.8A Withdrawn EP3710721A1 (de) | 2017-11-14 | 2018-11-06 | Kolbenstange mit kolben, insbesondere für einen fluidtechnischen aktor und verfahren zum herstellen einer kolbenstange mit kolben |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3710721A1 (de) |
| DE (1) | DE102017220204A1 (de) |
| WO (1) | WO2019096617A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019217335A1 (de) * | 2019-11-11 | 2021-05-12 | Zf Friedrichshafen Ag | Kolbenstange für einen Schwingungsdämpfer eines Kraftfahrzeugs |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7703341U1 (de) * | 1900-01-01 | Fa. Carl Freudenberg, 6940 Weinheim | ||
| US2310917A (en) * | 1940-07-10 | 1943-02-16 | Daly Le Grand | Self-packing piston |
| GB572055A (en) * | 1944-02-08 | 1945-09-20 | Angus George Co Ltd | Improvements in cup washers |
| DE2163840A1 (de) * | 1971-12-22 | 1973-06-28 | Knorr Bremse Gmbh | Druckmittelbetaetigbarer zylinder |
| DE2454377A1 (de) * | 1974-11-15 | 1976-05-20 | Kupfer Asbest Co | Dichtkolben fuer betaetigungszylinder |
| WO1980001306A1 (en) | 1978-12-12 | 1980-06-26 | United Stierling Ab & Co | Piston rod seal |
| US4306489A (en) * | 1979-11-01 | 1981-12-22 | Exxon Research & Engineering Co. | Composite piston |
| JPS6088222A (ja) * | 1983-10-21 | 1985-05-18 | Daido Metal Kogyo Kk | 複合摺動体 |
| DE102007024522B8 (de) * | 2007-05-24 | 2009-05-28 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Verbundkolbeneinheit für ein automatisiertes Fahrzeuggetriebe |
| US20090255400A1 (en) * | 2008-04-14 | 2009-10-15 | Polygon Company | Hybrid Piston Rod |
| DE102010007404A1 (de) | 2010-02-09 | 2011-08-11 | INPRO Innovationsgesellschaft für fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH, 10587 | Verfahren zum Herstellen eines rohrförmigen rotationssymmetrischen Kfz-Fahrwerkbauteils wie einer Kolbenstange, und gebaute Kolbenstange |
| ITBO20120481A1 (it) * | 2012-09-12 | 2014-03-13 | Ri Ba Composite S R L Con Unico So Cio | Cilindro oleodinamico in laminato composito ibrido, in particolare per applicazioni ad elevate potenze di esercizio |
| US20140262626A1 (en) * | 2013-03-14 | 2014-09-18 | The Raymond Corporation | Buckling-Resistant Lift Cylinders |
| DE102013109616A1 (de) * | 2013-09-03 | 2015-03-05 | Thyssenkrupp Steel Europe Ag | Halbzeug und Verfahren zur Herstellung eines dreidimensional geformten Hybridbauteils im Metall/Kunststoffverbund sowie Verwendung eines solchen Halbzeuges |
| CN106687696B (zh) * | 2014-11-12 | 2019-02-05 | 费斯托股份有限两合公司 | 活塞和装备有该活塞的调节设备 |
| US10035526B2 (en) * | 2014-12-03 | 2018-07-31 | New York Air Brake, LLC | Brake piston assembly |
| US20160245359A1 (en) * | 2015-02-25 | 2016-08-25 | Michael A. Ankney | Piston head assembly for radio controlled cars shock absorber and method |
-
2017
- 2017-11-14 DE DE102017220204.1A patent/DE102017220204A1/de not_active Withdrawn
-
2018
- 2018-11-06 EP EP18803351.8A patent/EP3710721A1/de not_active Withdrawn
- 2018-11-06 WO PCT/EP2018/080246 patent/WO2019096617A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017220204A1 (de) | 2019-05-16 |
| WO2019096617A1 (de) | 2019-05-23 |
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