EP2856581A1 - Verfahren zur herstellung einer bürste eines kommutatormotors - Google Patents
Verfahren zur herstellung einer bürste eines kommutatormotorsInfo
- Publication number
- EP2856581A1 EP2856581A1 EP13727044.3A EP13727044A EP2856581A1 EP 2856581 A1 EP2856581 A1 EP 2856581A1 EP 13727044 A EP13727044 A EP 13727044A EP 2856581 A1 EP2856581 A1 EP 2856581A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brush
- commutator
- cam
- pigtail
- motor
- 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- Withdrawn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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/38—Brush holders
- H01R39/381—Brush holders characterised by the application of pressure to brush
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/26—Solid sliding contacts, e.g. carbon brush
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/32—Connections of conductor to commutator segment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/38—Brush holders
- H01R39/41—Brush holders cartridge type
- H01R39/415—Brush holders cartridge type with self-recoiling spring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/12—Manufacture of brushes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/006—Structural associations of commutators
Definitions
- the invention relates to a method for producing a brush of a commutator motor, such a brush and a commutator motor with such a brush, in particular a motor vehicle ventilator.
- a liquid coolant is usually used, which in turn must be cooled. This is usually done by means of an acted upon by a wind radiator network, which is in heat exchange with the coolant.
- the coolant is directed into tubes that are incorporated into the radiator network. Since, in particular at low vehicle speeds, the travel wind is normally insufficient for cooling, it is known, for example, from EP 1 621 773 A1 to use an electric main ventilator by means of which the travel wind is amplified.
- the main fan is arranged in the direction of travel behind the radiator network. With the help of a fan of the fan, the air is sucked through the radiator network and passed to the engine.
- the fan is connected by means of a central rotor shaft coupling with a rotor shaft of the electric motor or its rotor (rotor).
- a commutator motor As an electric motor usually a commutator motor is used.
- a number of carbon brushes which lie in corresponding holes are arranged around a central commutator, which are in electrical contact with the commutator and, for this purpose, brush its commutator segments during rotary motor operation.
- Each brush has a connecting strand running perpendicular to the direction of attachment. During operation of the electric motor, the brushes are brushed in the course of brushing the commuta-
- CONFIRMATION COPY torn due to friction The resulting abrasive particles can be deposited between the individual commutator bars and short them. Furthermore, the resulting friction heat can promote burnup of the brushes and the resulting coal dust.
- the invention has for its object to provide a particularly suitable method for the production of brushes, a particularly suitable brush and a particularly suitable commutator with a brush, the brush comparatively durable and abrasion resistant, suitably comparatively simple and inexpensive mountable in the commutator and especially comparatively should be inexpensive to manufacture.
- the method provides that a brush material is filled into a die.
- the brush material is in particular coal dust, which is mixed with a fixing agent.
- Under die is understood to mean a mold, the recess at least partially corresponds to the outer shape of the casting, so the brush.
- the brush material located inside the die is compressed by means of a punch and heated, for example.
- the direction of movement of the stamp is in this case along a bearing direction.
- the direction of attachment here denotes the direction in which the brush created is pressed by means of a spring against a commutator of an electric motor and corresponds to the brush longitudinal direction of the brush produced.
- the punch is thus in contact with the future abutment surface between the preferably cuboidal brush and the commutator or opposite end of the brush.
- two punches are used to make the brush, one of which is in contact with the future abutment surface and the other in contact with the opposite end of the brush.
- the remaining boundary surfaces of the brush are defined by the die. These are thus made relatively flat and tolerance-free. They have no burrs or deformations. Therefore, they do not need to be reworked by means of a milling cutter or the like in order to ensure a comparatively simple assembly of the brush within a quiver of the electric motor and safe operation of the electric motor.
- the quiver forms an at least partially positive reception of the brush, within which the brush is displaceable in the radial direction of the electric motor to the commutator. If the boundary surfaces were uneven, the brush could become wedged and the functioning of the electric motor, also referred to as a commutator motor, would no longer be ensured. Due to the pressing direction of the punch or the brush material along a preferred direction, namely the direction of investment, aligned and compressed. The resulting brush has increased stability and abrasion resistance in this direction. Therefore, the operation of the electric motor is relatively safe since both the abrasion is reduced and the likelihood of the brush being broken down during the sweep of the commutator is reduced.
- a pigtail is inserted into the brush material before compression by means of the punch.
- the pigtail in the region of the resulting brush is completely enclosed by the brush material.
- the die is filled to a certain fraction with the brush material, inserted in a subsequent step, the pigtail, and filled in a further step, the remaining brush material into the die.
- the pigtail is positively and non-positively held by the brush.
- the course of the pigtail within the brush is in this case substantially parallel to the contact direction, wherein, however, a meandering course with a preferred direction in the contact direction is also conceivable in order to ensure improved anchoring of the pigtail within the brush.
- the pigtail preferably exits on the contact surface opposite end of the brush out of this.
- the stamp arranged on this side or the bottom of the die for this purpose has a recess through which the pigtail is inserted into the mold of the brush. Due to such a production eliminates a costly tying the pigtail to the brush, for example by drilling a recording in the brush and subsequent local bonding of the pigtail.
- the brush expediently has a cam which is formed perpendicular to the contact direction or brush longitudinal direction.
- a compensation channel is introduced into the matrix for this purpose.
- the cam is designed substantially cuboid.
- the cam is relatively robust.
- this makes it possible to form the brush with the cam comparatively stable.
- the space requirement is comparatively low, yet a secure engagement with the cam is possible.
- the cam is arranged on an axial side of the brush, which is also referred to below as an axial surface.
- axial side or axial surface is understood a side or surface of the brush, which limits these in the mounted state in the axial direction of the electric motor.
- the comparatively small space of the brush holder, also referred to as a brush plate taken into account, on which the quiver is located.
- a longitudinal groove extending in the direction of engagement is introduced into the axial surface and extends up to the cam.
- a corresponding longitudinal web is introduced into the matrix for this purpose.
- the cam protrudes only over a part of this axial height from the axial surface of the brush.
- the longitudinal groove can additionally or alternatively be used as a guide surface for the production of the cam.
- the cam since the cam only increases the overall height of the brush in the axial direction, further components of the electric motor can be arranged on the brush carrier comparatively close to the brush.
- the cam is offset away from the contact surface of the brush and preferably adjacent to the opposite end of the brush. In this way, damage to a large extent pronounced abrasion of the brush and the concomitant shortening of the brush in bearing direction the cam not.
- the contact surface of the brush on the commutator has a curvature inwardly, which corresponds to the rounded mantle surface of the cylindrical commutator.
- the area is increased the contact surface of the brush on the commutator and a resulting electrical voltage drop between the two reduced.
- a receiving groove is inserted into the brush, which receives the brush to the commutator pressing spring at least partially.
- the spring is held in a form-fitting manner in the receiving groove, so that no further fastening means for binding the spring to the brush are required, wherein the area of action of the spring on the brush is defined by means of the receiving groove.
- the spring is designed as a leaf spring.
- the spring is made of a spring steel strip which is rolled up at its ends. With a suitable attachment of the ends to the brush holder, the brush is pressed against the commutator.
- the recording groove preferably introduced at least partially circumferentially in the brush or is located on the opposite end of the contact surface of the brush.
- the brush carrier of the electric motor suitably has a cantilever which includes a region for latching with the cam.
- the brush is first inserted into the quiver of the brush holder and the spring is applied or connected to both the brush and the brush holder.
- the pigtail is electrically contacted with electrical components of the electric motor, such as a choke, arranged on the brush plate.
- the brush is moved radially outward within the quiver against the pressing direction and locked with the boom.
- the boom engages the cam and prevents caused by the spring movement of the brush in the pressing direction.
- a subsequent step the rotatably mounted on a shaft commutator is inserted into a central opening of the brush holder and secured the shaft in the axial direction, for example by means of bearings.
- the boom is opened and the brush released. This is moved due to the spring load against the commutator.
- the subsequent assembly of a commutator comprising the rotor is hereby comparatively simple, especially since the latched brush is kept at a distance from the commutator by means of the cantilever. In other words, the brush does not interfere with the insertion of the commutator.
- the boom is connected to the quiver and in particular integrally formed.
- the boom is located on an axial side of the quiver.
- the course of the boom in the direction of the brush is pivoted to unlock the cam of the brush about an axis which is perpendicular to the bearing direction, for example, a film hinge is used. Due to such a profile of the boom, it is located in a region of the electric motor that is not occupied by any other components of the electric motor, which is why such a cantilever can be integrated into an existing electric motor in a comparatively uncomplicated manner.
- the pigtail in the region of the brush is S-shaped.
- the abrasion compensating compensation length of the pigtail is available. It is well defined directly after installation of the space of the compensation length of the pigtail and any other components of the electric motor are not hindered or impaired.
- FIG. 2 is a fragmentary perspective view of a brush holder of the electric motor
- FIG. 6 is a representation according to FIG. 5, a brush with longitudinal groove and cam
- FIG. 7 in fragmentary perspective view of the brush holder with the brush
- Fig. 8 shows schematically the manufacture of the brush. Corresponding parts are provided in all figures with the same reference numerals.
- Fig. 1 is a schematic simplified view in a side view, a radiator fan 2 of a motor vehicle shown, so a motor vehicle fan.
- the radiator fan 2 comprises a radiator network 4, through which a cooling pipe 6 is guided.
- a cooling liquid which is kept in circulation by means of a pump, not shown here.
- the cooling liquid is passed through and heated by an internal combustion engine 8, wherein the internal combustion engine 8 is cooled.
- the heated coolant is again passed through the radiator network 4, which is acted upon by a wind.
- the direction of the wind is here along a wind direction 10, which corresponds substantially to the main direction of travel of the motor vehicle.
- a ventilator 12 By means of a ventilator 12, referred to as the main ventilator, which is arranged behind the radiator network 4 in the direction of air flow 10, the airstream is amplified or generated when the vehicle is at a standstill. This is done by means of an electric motor 14, which sets a fan 16 in rotation. Further, by means of the fan 16 of the wind is passed to the internal combustion engine 8, and this thus applied from the outside with the airstream. This leads to an additional cooling of the internal combustion engine 8.
- the fan 16 is disposed within a radiator frame 8, by means of which the airstream is steered. In the transition region between the frame 18 and the fan 16 are brushes or a certain contour, each of which prevents a so-called leakage between the two components.
- the electric motor 14 is attached by means of struts 20 on the frame 18.
- the struts 20 are made in one piece with the frame 18, for example in a plastic injection molding process.
- Fig. 2 shows in perspective the electric motor 14, in which a housing and other components are not shown due to the clarity.
- the electric motor 14 has a centrally about a rotational axis 22 rotatably mounted shaft 24.
- a commutator 26 is rotatably secured with twenty mutually electrically insulated commutator 28.
- the brushes 30 are at least partially positively arranged within quivers 32 of a brush holder 34 made of a plastic, which are integral with this.
- Each brush 30 is pressed by a leaf spring 36 against the commutator 32 in a respective, radially inwardly extending abutment direction 38 which extends perpendicular to the contact surface 40 between the brush 30 and the commutator 26.
- the brushes 30 stroke at a rotational movement of the shaft 24 via the commutator bars 28 and are thus electrically contacted with these.
- a pigtail 42 is connected at the abutment surface 40 between each brush 30 and the commutator 26 opposite end of the respective brush 30, a pigtail 42 is connected.
- the connecting leads 42 are each electrically contacted by means of a choke 44, which are clipped to the brush holder 34 and are electrically connected via a fuse (not shown) and a supply line 46 to an electrical system of the motor vehicle.
- FIG. 3 one of the brush 30 and in Fig. 4 and Fig. 5, the brush 30 and the associated leaf spring 36 is shown in perspective.
- Fig. 6 shows a variant of the brush 30.
- the brush 30 is substantially cuboid, wherein the corrugated bearing surface 40 is curved.
- the curvature corresponds to the curvature of the commutator 26, so that the brush 30 rests in the mounted state over the entire surface with the brush 30 in the pressing direction 38 limiting contact surface 40 to the commutator 26.
- a cuboidal cam 50 is formed, which adjoins the connected to the pigtail 42 end of the brush 30.
- axial surfaces 48 are here those side surfaces of the cuboid brush 30, delimiting them in an axial direction 52 extending parallel to the axis of rotation 22.
- the longitudinal groove 51 By means of the longitudinal groove 51, a comparatively large effective height of the cam 50 in the axial direction 52 can be achieved, the cam 50 protruding itself from the axial surface 48 of the brush 30 only over a part of this axial height.
- the longitudinal groove 51 may have, for example, a groove depth of 0.5 mm, which is particularly effective in terms of production technology in the case of an axial surface 48 of, for example, 0.5 mm.
- the longitudinal groove 51 Ikann can also be used as a guide surface.
- a receiving groove 54 is introduced, whereby this end has an L-shaped cross-section along a defined by means of the pressing direction 38 and axial direction 52 cut surface.
- the leaf spring 36 is positively arranged in the assembled state.
- the pigtail 42 exits from the brush 30 and is configured in the directly adjoining region 56 is substantially S-shaped, as shown in Fig. 4.
- Fig. 6 the brush 30 during assembly of the commutator motor 14 is shown.
- the brush 30 is held against the force exerted by the leaf spring in the direction of engagement 38 by means of a force acting on the cam 50 cantilever 58 and thus spaced from the central opening of the brush holder 34, within which the commutator 26 rests in the assembled state.
- the extending in the direction of attachment 38 boom 58 is integrally formed at one end to the quiver 32 and the formed free end of the cam 50 of the brush 30 is coupled.
- the brush 30 and the boom 58 is unlatched, whereby the brush 30 is pressed under the free end of the boom 58 in the axial direction 38 therethrough.
- the release of the brush 30 is done by means of a bending of the boom of the brush 30 away.
- the cam 50 is offset below the free end or in abutment direction 38 with respect to Freiendes of the boom 58, which is why these two do not latch again.
- the brush 30 is pressed substantially unhindered by means of the leaf spring 36 against the commutator 26 and a resulting abrasion during operation of the electric motor 14 compensated. Consequently, the pigtail 42 and the commutator 26 are electrically contacted via the brush 30.
- the brush 30 is pressed against the bearing direction 38 radially outward until the cam 50 and the boom 58 in turn engage. Thereafter, the commutator 26 can be removed or adapted unhindered.
- FIG. 7 schematically illustrates, in a simplified manner, the production process of the brush 30.
- a mold 64 formed by means of a die 60 and a lower punch 62 is about half a brush material 66, coal dust, filled.
- the shape of the lower punch 62 determines the shape of the contact surface 40 and that of the die 60, inter alia, the axial surfaces 48.
- the pigtail 42 is inserted into the mold and the mold with the upper punch 70 completed.
- the upper punch 70 is located on the opposite side of the lower die 62 of the mold 64.
- the mold 66 is widened to form the cam 50.
- the remaining free part of the mold 64 is filled with the brush material 66, and the part of the pigtail 42 located inside the mold is completely enclosed by the latter.
- the two punches 62, 70 pressed against each other, which compresses the coal dust.
- the direction of movement of the punches 62, 70 is in this case along the contact direction 38. Consequently, the contact surface 40 and the end opposite thereto are exerted on the brush material 66 by the latter.
- the die 60 is heated and the brush material 66 is thus baked to the brush 30, which secures the pigtail 42 to the brush 30. Due to the pressing direction along the bearing direction 38, the brush material 66 is transferred in this preferred direction in a crystalline state, which increases the resistance of the brush 30 against increases abrasion of the commutator 26 during operation of the electric motor 14.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012010481A DE102012010481A1 (de) | 2012-05-26 | 2012-05-26 | Verfahren zur Herstellung einer Bürste eines Kommutatormotors |
PCT/EP2013/001455 WO2013178328A1 (de) | 2012-05-26 | 2013-05-16 | Verfahren zur herstellung einer bürste eines kommutatormotors |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2856581A1 true EP2856581A1 (de) | 2015-04-08 |
Family
ID=48576934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13727044.3A Withdrawn EP2856581A1 (de) | 2012-05-26 | 2013-05-16 | Verfahren zur herstellung einer bürste eines kommutatormotors |
Country Status (6)
Country | Link |
---|---|
US (1) | US9954334B2 (de) |
EP (1) | EP2856581A1 (de) |
CN (1) | CN104335435B (de) |
BR (1) | BR112014029135A2 (de) |
DE (1) | DE102012010481A1 (de) |
WO (1) | WO2013178328A1 (de) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5487213A (en) * | 1994-05-02 | 1996-01-30 | Emerson Electric Co. | Method of assembling an electric motor |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1878132A (en) * | 1926-07-20 | 1932-09-20 | Metals Disintegrating Co | Process of baking molded pieces |
US1831144A (en) * | 1929-05-11 | 1931-11-10 | Delco Remy Corp | Means for molding commutator brushes |
US2790100A (en) * | 1951-06-06 | 1957-04-23 | James V Caputo | Electrical brush |
DE2157596A1 (de) | 1971-11-20 | 1973-05-30 | Bosch Gmbh Robert | Schleifbuerstenhalter fuer elektrische maschinen |
US3906624A (en) * | 1973-03-07 | 1975-09-23 | Fuji Carbon Manufacturing Co L | Electrical machine brush and method and apparatus for manufacturing the same |
DE2311360C3 (de) * | 1973-03-08 | 1985-12-12 | Fuji Carbon Mfg. Co., Ltd., Tokio/Tokyo | Verfahren und Vorrichtung zur Herstellung einer Bürste mit einem eingebetteten Leitungsdraht |
US4112321A (en) * | 1977-07-26 | 1978-09-05 | Electrohome Limited | Brush holder and brush assembly for a dynamoelectric machine |
DE3328683A1 (de) * | 1983-08-09 | 1985-02-21 | SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen | Elektrische maschine, insbesondere elektromotor |
DE4226553A1 (de) * | 1992-08-11 | 1994-02-17 | Teves Gmbh Alfred | Bürstenhalter für Elektromotoren |
US5495134A (en) | 1993-09-20 | 1996-02-27 | Itt Automotive Electrical Systems Inc. | Dynamoelectric brush holder |
JPH07183075A (ja) * | 1993-12-22 | 1995-07-21 | Toraisu Kk | リード線付きブラシの圧縮成形装置 |
FR2714542B1 (fr) * | 1993-12-23 | 1996-02-02 | Carbone Ag | Dispositif de fabrication économique de balais à anisotropie prédéterminée et procédé correspondant. |
US5870026A (en) * | 1997-07-15 | 1999-02-09 | The Morgan Crucible Company Plc | Brush wear indicator |
US6744170B1 (en) * | 1998-02-06 | 2004-06-01 | Black & Decker Inc. | Brush assembly |
EP1459423B1 (de) * | 2001-12-18 | 2014-10-01 | Cutsforth Products Inc. | Kohlebürstenhalter, der ausgetauscht werden kann ohne die Maschine zu stoppen |
DE10355982A1 (de) * | 2003-11-27 | 2005-06-30 | Valeo Motoren Und Aktuatoren Gmbh | Bürstenhalter für Elektromotoren sowie Elektromotor mit einem solchen Bürstenhalter |
GB0409662D0 (en) | 2004-04-30 | 2004-06-02 | Johnson Electric Sa | Brush assembly |
EP1621773B1 (de) | 2004-07-30 | 2013-04-17 | Brose Fahrzeugteile GmbH & Co. KG, Würzburg | Kühlgebläse mit Elektromotor |
CN101656441B (zh) * | 2008-08-18 | 2013-06-12 | 德昌电机(深圳)有限公司 | 用于具有换向器的电动马达的轨道电刷总成及电动马达 |
EP2429066B1 (de) * | 2010-09-13 | 2020-04-01 | LG Innotek Co., Ltd. | Blechplatte für Gleichstrommotor |
JP6406142B2 (ja) * | 2015-07-03 | 2018-10-17 | 株式会社デンソー | 直流モータ |
JP6627302B2 (ja) * | 2015-07-21 | 2020-01-08 | 日本電産株式会社 | モータ |
-
2012
- 2012-05-26 DE DE102012010481A patent/DE102012010481A1/de not_active Withdrawn
-
2013
- 2013-05-16 WO PCT/EP2013/001455 patent/WO2013178328A1/de active Application Filing
- 2013-05-16 BR BR112014029135A patent/BR112014029135A2/pt not_active Application Discontinuation
- 2013-05-16 EP EP13727044.3A patent/EP2856581A1/de not_active Withdrawn
- 2013-05-16 CN CN201380027725.3A patent/CN104335435B/zh active Active
-
2014
- 2014-11-26 US US14/554,360 patent/US9954334B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5487213A (en) * | 1994-05-02 | 1996-01-30 | Emerson Electric Co. | Method of assembling an electric motor |
Also Published As
Publication number | Publication date |
---|---|
CN104335435B (zh) | 2017-04-26 |
US9954334B2 (en) | 2018-04-24 |
DE102012010481A1 (de) | 2013-11-28 |
WO2013178328A1 (de) | 2013-12-05 |
BR112014029135A2 (pt) | 2017-06-27 |
US20150076958A1 (en) | 2015-03-19 |
CN104335435A (zh) | 2015-02-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20150105 |
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