EP2577039A2 - Starter für eine brennkraftmaschine - Google Patents
Starter für eine brennkraftmaschineInfo
- Publication number
- EP2577039A2 EP2577039A2 EP11719808.5A EP11719808A EP2577039A2 EP 2577039 A2 EP2577039 A2 EP 2577039A2 EP 11719808 A EP11719808 A EP 11719808A EP 2577039 A2 EP2577039 A2 EP 2577039A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pinion
- starter
- pinion shaft
- shaft
- starter pinion
- 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.)
- Granted
Links
- 239000007858 starting material Substances 0.000 title claims abstract description 120
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 15
- 230000008878 coupling Effects 0.000 claims description 19
- 238000010168 coupling process Methods 0.000 claims description 19
- 238000005859 coupling reaction Methods 0.000 claims description 19
- 230000033001 locomotion Effects 0.000 description 13
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
- F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
- F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
- F02N15/062—Starter drives
- F02N15/063—Starter drives with resilient shock absorbers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
- F02N15/022—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch
- F02N15/025—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch of the friction type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
- F02N15/022—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch
- F02N15/023—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch of the overrunning type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
- F02N15/022—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch
- F02N15/026—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch of the centrifugal type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
- F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
- F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
- F02N15/062—Starter drives
- F02N15/065—Starter drives with blocking means
Definitions
- the invention relates to a starter for an internal combustion engine according to the preamble of claim 1.
- PRIOR ART DE 102 58 908 A1 describes an electrically actuable starter for an internal combustion engine, which comprises a starter pinion which is axially adjustable between a retracted rest position and an advanced engagement position with a ring gear of an internal combustion engine for starting an internal combustion engine.
- the starter pinion is rotatably coupled to a pinion shaft, but held axially adjustable with respect to this, the axial relative movement is limited to an axial play.
- a spring element is arranged, wherein the axial play forms the spring travel for the spring element.
- the spring reduces the impulse when hitting the pinion teeth on the front side of the ring gear of the internal combustion engine.
- the spring element is in this case designed as a helical spring, which is arranged in the interior of the sleeve-shaped pinion shaft.
- Starter pinion and pinion shaft are coupled together axially via a positive connection, which is produced by the sleeve-shaped pinion shaft is pushed onto a portion of the starter pinion and a shoulder on the outer surface of the starter pinion from a radially inwardly projecting collar on the front side of the pinion shaft is overruled.
- a positive connection which is produced by the sleeve-shaped pinion shaft is pushed onto a portion of the starter pinion and a shoulder on the outer surface of the starter pinion from a radially inwardly projecting collar on the front side of the pinion shaft is overruled.
- the invention has the object of providing a starter for an internal combustion engine with simple design measures in such a way that the diameter of the pinion shaft in the region of the connection with a driver can be freely selected within wide limits.
- the starter comprises a starter pinion and a pinion shaft which are to be adjusted axially between a retracted non-functional position and a pre-engaged drive position in which the starter pinion engages with a ring gear of the internal combustion engine.
- the rotational movement of the starter is preferably generated by an electric motor, the axial adjustment via electrically actuated actuator.
- the axial engagement movement is associated with a rotational movement, wherein the combined rotational and displacement movement is carried out via a driver, which usually meshes via a helical toothing with the armature or the drive shaft of the electric motor.
- the driver acts on the pinion shaft, which in turn is connected with axial play, but rotatably connected to the starter pinion.
- the spring element which is effective between the starter pinion and the pinion shaft in the axial direction, pushes these two components apart in the direction of maximum axial play. If the starter pinion strikes against the end face of the ring gear during the engagement movement, the axial play and the spring force serve as a buffer for reducing the impact pulse.
- the starter pinion and the pinion shaft are connected to each other via a coupling device, wherein the coupling device and the spring element are arranged radially on the same inside or outside of the pinion shaft. Furthermore, it is provided that in the embodiment according to the invention, the starter pinion and the pinion shaft on their axial facing each other end faces are plugged into each other. Because of this assembly direction of the axially facing away from the starter pinion portion of the pinion shaft, which in particular forms a roll collar for rolling of rolling elements relative to the driver, structurally independently of the starter pin design.
- the inner diameter in the region of the roller coil is not subject to any restrictions with regard to the assembly of starter pinion and pinion shaft and thus can take smaller diameter than is possible with prior art designs in which the starter pinion to reach its mounting position through the entire Pinion shaft must be passed.
- the roller collar on the pinion shaft can also have a relatively small diameter.
- Another advantage of this design lies in the possibility of building a modular system by replacing only the pinion shaft for different applications, whereas the other components such as Steckritzel and drivers can be maintained. In this way, different axial lengths or diameter of the starter can be realized.
- the coupling means via which the starter pinion and the pinion shaft are bonded to each other, and the spring element are located radially outside of the interior for receiving the drive shaft, which is part of the starter motor, the inner diameter of the starter can be kept relatively small, whereby a correspondingly small radial total extension is given.
- the interior can thus be designed so that only the drive shaft is received, whereas the spring element and the coupling device are arranged outside the interior.
- the intermeshing of starter pinion and pinion shaft for example, such that a portion of the starter pinion is overlapped by a facing portion of the pinion shaft, so that the pinion shaft is disposed radially outside of this portion of the starter pinion.
- a reverse arrangement in which a portion of the starter pinion radially overlaps the facing portion of the pinion shaft.
- the pinion shaft has in particular a roller collar, which, according to an advantageous embodiment, axially adjoins the front side of the starter pinion and thus can be carried out independently of the starter pinion, in particular with regard to the diameter. Between the roller collar and the facing end face of the starter pinion is a gap that forms the axial play between the starter pinion and pinion shaft.
- the axial play is kept in the unloaded state of the starter pinion to a maximum. If the starter pinion strikes against the end face of the ring gear on the internal combustion engine during the meshing movement, the axial play is reduced against the force of the spring element, whereby the momentum is minimized when the starter pinion abuts against the ring gear. The axial play thus forms the spring travel of the spring element.
- the coupling device between starter pinion and pinion shaft is designed as a latching connection and in particular comprises a radially compressible snap ring.
- This snap ring is preferably received in a groove which is introduced into the wall of the starter pinion and the pinion shaft.
- the snap ring expands radially again and assumes its final locking position, in which the starter pinion and the pinion shaft are axially locked together in the axial play.
- the coupling in the direction of rotation between the starter pinion and the pinion shaft is achieved, in particular, by the fact that the sections to be inserted into one another are each provided with teeth which engage in one another during assembly, so that any rotational movement of the pinion shaft is also transmitted to the starter pinion.
- the toothing also allows the axial relative movement in the context of the axial play.
- the spring element which is arranged outside the interior is designed as an annular wave spring, in particular between facing shoulders on the outside of the starter pinion and Pinion shaft is positioned.
- spring element designs into consideration, such as corrugated or compression springs.
- the spring element can be overlapped by a cover component, which is annular and, for example, formed with an L-shaped cross section.
- the cover member is located at least with a portion between the spring element and the starter pinion or the pinion shaft and thus serves to transmit the spring force.
- the coupling device is arranged directly adjacent to the end face of the starter pinion. It may be expedient to position the spring element and the coupling device axially at a distance from each other, in particular such that the spring element is arranged in the region of the end face of the pinion shaft, so that the spring element can be supported on the end face.
- FIG. 1 is an exploded view of the essential components of a starter for an internal combustion engine, comprising a starter pinion and a pinion shaft including an intermediate snap ring for a coupling of starter pinion and pinion shaft and a wave spring,
- Fig. 4 is an enlargement of the coupling region between the starter pinion and pinion shaft.
- the starter 1 for an internal combustion engine as essential components comprises a starter pinion 2, which is axially adjustable on a non-illustrated armature or drive shaft between a retracted non-functional position and a on or advanced drive position in which the starter pinion 1 with a ring gear on the internal combustion engine in Intervention is.
- the starter pinion is set in rotary motion via the drive shaft.
- the axial displacement movement on the drive shaft is effected by means of an engagement relay, which actuates a driver which is coupled to a pinion shaft 3 of the starter 1.
- the pinion shaft 3 is non-rotatably connected to the starter pinion 2, but starter pinion 2 and pinion shaft 3 can axially execute a sliding movement within the framework of a defined, limited to a maximum axial play.
- the driver moves axially forward and also displaces the pinion shaft 3 and the starter pinion 2 into the axially advanced drive position in which the starter pinion 2 engages with the ring gear of the internal combustion engine.
- the electric drive motor is started, wherein the rotational movement of the drive shaft of the drive motor is transmitted to the driver and the pinion shaft 3 and thus also to the starter pinion 2.
- the driver including starter pinion 2 and pinion shaft 3 back into the axially retracted inoperative position.
- Starter pinion 2 and pinion shaft 3 are axially supported by a spring element 4, which is designed as a corrugated spring, axially.
- the corrugated spring 4 is overlapped in the mounted position by an annular cover member 5, wherein a disk-shaped portion of the cover member 5 transmits the spring force of the wave spring 4 in the axial direction.
- the annular wave spring 4 is pushed onto a portion of the pinion shaft 3 in the region of the starter pinion 2 facing end face.
- both the starter pinion 2 and pinion shaft 3 engages a shaft portion 2a on the starter pinion 2, which is provided with an external toothing, in an associated portion 3a of the pinion shaft 3, which is provided with an internal toothing.
- Both the starter pinion 2 and the pinion shaft 3 are designed as hollow cylindrical components, so that the drive shaft of the electric drive motor can be passed through both components.
- To support the drive shaft are pocket bushings 7 and 8, which are used in the cavities of the starter pinion 2 and the pinion shaft 3.
- the axial coupling between the starter pinion 2 and the pinion shaft 3 is effected by means of a coupling device designed as a snap ring 6, although the starter pinion and the pinion shaft 3 axially secured together, but allows axial play between these components.
- the snap ring 6 secures the components 2 and 3 via a latching or positive connection together.
- the starter pinion 2 and the pinion shaft 2 are inserted into one another axially via their mutually facing end sides in order to produce the connection.
- the respective inner and hollow spaces of starter pinion 2 and pinion shaft 3 form a continuous, axially aligned receiving space for the drive shaft of the electric drive motor.
- the roller collar 3b on the pinion shaft 3 connects axially to the connecting portion 3a, via which the pinion shaft 3 is connected to the starter pinion 2.
- the section 3a engages over the associated portion 2a of the starter pinion 2 radially.
- the facing end face of the starter pinion 2 is located with an axial clearance 9 at a distance from a circumferential annular shoulder on the inside of the pinion shaft 3 in the transition from the roller collar 3b to the section 3a.
- the corrugated spring 4 presses the starter pinion 2 and the pinion shaft 3 axially apart, so that in the non-externally loaded state, the axial play 9 is maximum.
- the axial play can be reduced to zero, in this case proposes the front side of the starter pinion 2 to the inner circumferential collar or the shoulder in the transition between the sections 3a and 3b of the pinion shaft 3. Due to the axially upstream position of the roller collar 3b relative to the
- the inner and outer diameter of the roller collar can be performed independently of the starter pinion 2 and the coupling elements between pinion shaft and starter pinion.
- the only prerequisite is only that the inner diameter of the roller 3b makes it possible to accommodate the drive shaft of the electric drive motor.
- the corrugated spring 4 is axially supported on the sides of the pinion shaft 3 on a circumferential annular shoulder of the section 3a.
- the corrugated spring 4 is overlapped by the cover component 5, wherein the cover component 5 has an L-shaped cross section and one leg of the cover component has the corrugated spring 4 radially outward and another, vertically extending leg, the corrugated spring 4 axially or frontally covered on the starter pinion 3 side facing.
- This radially extending leg which forms a disk transmits the spring force of the spring 4 axially between the starter pinion 2 and the pinion shaft 3.
- the snap ring 6 which is arranged adjacent to the end face of the section 2a on the starter pinion 2 and is axially positioned at a distance from the spring element 4, is received in an annular groove 10, which is introduced into the lateral surface of the portion 2 a of the starter pinion 2 adjacent to the free end face.
- the snap ring 6 is designed to be radially elastic and can be compressed radially for mounting the components 2 and 3, so that the radial outer side of the snap ring 6 lies completely within the annular groove 10.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010029260.5A DE102010029260B4 (de) | 2010-05-25 | 2010-05-25 | Starter für eine Brennkraftmaschine |
| PCT/EP2011/057454 WO2011147671A2 (de) | 2010-05-25 | 2011-05-10 | Starter für eine brennkraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2577039A2 true EP2577039A2 (de) | 2013-04-10 |
| EP2577039B1 EP2577039B1 (de) | 2020-12-23 |
Family
ID=44119018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11719808.5A Not-in-force EP2577039B1 (de) | 2010-05-25 | 2011-05-10 | Starter für eine brennkraftmaschine |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2577039B1 (de) |
| CN (1) | CN102918258B (de) |
| DE (1) | DE102010029260B4 (de) |
| HU (1) | HUE053540T2 (de) |
| WO (1) | WO2011147671A2 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010040527B4 (de) * | 2010-09-09 | 2019-10-31 | Seg Automotive Germany Gmbh | Starter für eine Brennkraftmaschine |
| DE102011090128B4 (de) * | 2011-12-29 | 2020-11-26 | Seg Automotive Germany Gmbh | Elektrische Maschine und Verfahren zu deren Montage |
| FR3042231B1 (fr) * | 2015-10-09 | 2019-08-16 | Valeo Equipements Electriques Moteur | Lanceur de demarreur de vehicule automobile muni d'un capot de protection |
| JP6690505B2 (ja) | 2016-11-16 | 2020-04-28 | 株式会社デンソー | 始動装置 |
| US11015564B2 (en) | 2018-04-24 | 2021-05-25 | GM Global Technology Operations LLC | Starter for an internal combustion engine |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB583881A (en) * | 1944-06-23 | 1947-01-01 | Bendix Aviat Corp | Engine starter |
| JPS5932670A (ja) * | 1982-08-16 | 1984-02-22 | Hitachi Ltd | スタ−タの噛合装置 |
| JPH01170760A (ja) | 1987-12-26 | 1989-07-05 | Mitsubishi Electric Corp | スタータモータのピニオンストッパ装置 |
| JP2847917B2 (ja) * | 1990-06-28 | 1999-01-20 | 株式会社デンソー | スタータの噛合衝撃吸収装置 |
| FR2681911A1 (fr) | 1991-10-01 | 1993-04-02 | Valeo Equip Electr Moteur | Dispositif de butee pour lanceur de demarreur pour moteur a combustion interne et procede pour la mise en óoeuvre d'un tel dispositif. |
| FR2772433B1 (fr) * | 1997-12-17 | 2000-02-04 | Valeo Equip Electr Moteur | Demarreur de vehicule automobile comportant un lanceur perfectionne |
| JP4453227B2 (ja) * | 2000-10-20 | 2010-04-21 | 株式会社デンソー | スタータ |
| CN2458431Y (zh) * | 2000-11-16 | 2001-11-07 | 杨旭伟 | 汽车发动机的单向啮合器 |
| DE10258908A1 (de) | 2002-12-17 | 2004-07-01 | Ina-Schaeffler Kg | Freilaufkupplungs-Baueinheit für den Starter eines Verbrennungsmotors |
| FR2871532B1 (fr) | 2004-06-09 | 2006-08-04 | Valeo Equip Electr Moteur | Demarreur, notamment de vehicule automobile, equipe d'un lanceur a roue libre par friction |
| FR2878909A1 (fr) * | 2004-12-03 | 2006-06-09 | Denso Corp | Demarreur destine a un moteur entraine apres engrenement d'un pignon avec une couronne d'engrenage du moteur |
| JP2007120400A (ja) * | 2005-10-27 | 2007-05-17 | Denso Corp | スタータ |
| JP5071082B2 (ja) * | 2007-12-07 | 2012-11-14 | 株式会社デンソー | スタータおよびエンジン始動装置 |
| DE102008042525A1 (de) * | 2008-10-01 | 2010-04-08 | Robert Bosch Gmbh | Startvorrichtung |
| DE102008054979A1 (de) * | 2008-12-19 | 2010-06-24 | Robert Bosch Gmbh | Verfahren und Vorrichtung für Start-Stopp-Anlagen von Brennkraftmaschinen in Kraftfahrzeugen |
| DE102009060957B4 (de) * | 2009-12-30 | 2018-07-19 | Seg Automotive Germany Gmbh | Startvorrichtung für eine Brennkraftmaschine |
-
2010
- 2010-05-25 DE DE102010029260.5A patent/DE102010029260B4/de not_active Expired - Fee Related
-
2011
- 2011-05-10 WO PCT/EP2011/057454 patent/WO2011147671A2/de not_active Ceased
- 2011-05-10 EP EP11719808.5A patent/EP2577039B1/de not_active Not-in-force
- 2011-05-10 CN CN201180025531.0A patent/CN102918258B/zh not_active Expired - Fee Related
- 2011-05-10 HU HUE11719808A patent/HUE053540T2/hu unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2011147671A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010029260A1 (de) | 2011-12-01 |
| CN102918258B (zh) | 2015-06-24 |
| EP2577039B1 (de) | 2020-12-23 |
| WO2011147671A2 (de) | 2011-12-01 |
| WO2011147671A3 (de) | 2012-02-23 |
| HUE053540T2 (hu) | 2021-07-28 |
| DE102010029260B4 (de) | 2022-01-05 |
| CN102918258A (zh) | 2013-02-06 |
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Legal Events
| Date | Code | Title | Description |
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| 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 |
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| 17P | Request for examination filed |
Effective date: 20130102 |
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| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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| DAX | Request for extension of the european patent (deleted) | ||
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SEG AUTOMOTIVE GERMANY GMBH |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
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| 17Q | First examination report despatched |
Effective date: 20190301 |
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| RIC1 | Information provided on ipc code assigned before grant |
Ipc: F02N 15/06 20060101ALI20200610BHEP Ipc: F02N 11/00 20060101ALN20200610BHEP Ipc: F02N 15/02 20060101AFI20200610BHEP |
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