EP3564501A1 - Arbre à cames concentrique à interface de modulateur de phase double - Google Patents

Arbre à cames concentrique à interface de modulateur de phase double Download PDF

Info

Publication number
EP3564501A1
EP3564501A1 EP18170689.6A EP18170689A EP3564501A1 EP 3564501 A1 EP3564501 A1 EP 3564501A1 EP 18170689 A EP18170689 A EP 18170689A EP 3564501 A1 EP3564501 A1 EP 3564501A1
Authority
EP
European Patent Office
Prior art keywords
phaser
camshaft
bearing ring
dual
outer tube
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Withdrawn
Application number
EP18170689.6A
Other languages
German (de)
English (en)
Inventor
David Arthur Bedborough
Timothy Mark Lancefield
Ian Methley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mechadyne International Ltd
Original Assignee
Mechadyne International Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mechadyne International Ltd filed Critical Mechadyne International Ltd
Priority to EP18170689.6A priority Critical patent/EP3564501A1/fr
Publication of EP3564501A1 publication Critical patent/EP3564501A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0471—Assembled camshafts
    • F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0476—Camshaft bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34426—Oil control valves
    • F01L2001/3443—Solenoid driven oil control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34426—Oil control valves
    • F01L2001/34433—Location oil control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34483—Phaser return springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L2001/34486—Location and number of the means for changing the angular relationship
    • F01L2001/34493—Dual independent phasing system [DIPS]

Definitions

  • the present invention relates to a phasing system for acting on two groups of cam lobes of a valve train of an internal combustion engine to change the phases of two groups of lobes independently of one another relative to the phase of the engine crankshaft.
  • the two groups of cam lobes in the present invention are mounted to a concentric camshaft, which comprises an outer tube rotatable with a first group of cam lobes and an inner shaft connected to drive the second group of cam lobes by way of pins that pass through slots in the outer tube.
  • phasers phasing systems
  • E-phasers electrically operated phasers
  • Concentric camshafts are well known that allow the relative timing of two sets of cam lobes to be adjusted, and in combination with a dual phaser they can provide independent control of the timing of the two sets of lobes relative to the engine crankshaft. In a single camshaft engine for example this could allow independent control of intake and exhaust valve timing.
  • a hydraulically operated dual phaser in most cases provides an effective solution for operating a concentric camshaft, but in applications with higher functional requirements it can be advantageous for one of the drive outputs of the dual phaser to use an E-phaser.
  • camshafts In many applications the engine assembly process requires the camshaft to be fitted to the engine and then the dual phaser to be fitted to the camshaft in a separate step. This particularly applies to camshafts designed to be fitted by sliding axially into journal bearings provided in the engine. This type of camshaft typically has bearing surfaces of a larger diameter than the cam lobes and is retained in the engine via an axial retaining plate.
  • the present invention aims to provide a versatile interface that can allow the same camshaft to be connected to either a dual hydraulic phaser or a hybrid phaser after the camshaft has been fitted to an engine.
  • a method of mounting a dual phaser on a concentric camshaft to enable torque to be applied from an engine crankshaft to the outer tube of a concentric camshaft comprises securing a bearing ring to an end of the outer tube for rotation with the outer tube, rotatably supporting the concentric camshaft in an engine by retaining the bearing ring within a pillar block, and securing to the bearing ring a dual phaser that includes a hydraulic phaser having an input member driven in use by the engine crankshaft and an output member connected to the bearing ring, characterized by providing two groups of flow passages in the bearing ring to communicate with passages in the pillar block, both groups of flow passages communicating through an axial end face of the bearing ring with passages leading to working chambers of the hydraulic phaser to enable the phase of one group of lobes of the camshaft to be advanced and retarded relative to the phase of the engine crankshaft.
  • Embodiments of the invention adopt a drive connection interface for a concentric camshaft that is suitable for mounting either a fully hydraulic dual phaser or a hybrid dual phaser.
  • the interface allows either type of dual phaser to be fitted to a camshaft after the camshaft has been mounted in the engine. This allows engine variants to be produced with different types of dual phaser and allows an engine specification to be upgraded without requiring changes to the design of the camshaft or the camshaft mounting in the engine.
  • the construction of a concentric camshaft 12 is already known (see for example GB 2,424,258 ) and can be understood most readily from the section of Figure 2B .
  • the camshaft 12 has an outer tube 16 and a concentric inner shaft 30.
  • a first set of cam lobes 22 is mounted for rotation with the outer tube 16 and each of the first cam lobes is secured to the outer tube 16, for example by heat shrinking.
  • the cam lobes 32 of a second set are supported by the outer tube 16 but can rotate relative to it. These second cam lobes 32 are driven by the inner shaft 30 via pins 34 that pass through slots in the outer tube 16 that extend circumferentially.
  • Figures 1, 1A , 2A and 2B illustrate the assembly of a hydraulic dual phaser 10 to such a concentric camshaft 12 and the method of providing a drive connection to the two sets of cam lobes 22 and 32.
  • the dual hydraulic phaser is shown in the exploded view of Figure 1A .
  • the input member to the dual phaser 10 is a sprocket 11 driven by the engine crankshaft and formed integrally with a stator 13 in the form of a ring with six arcuate cavities 15 that act as the working chamber of the phaser 10.
  • a first output member 21 covering and sealing against one side of the stator 13 is connected to three vanes 23 received in three of the cavities 15.
  • This output member 21 is connected as described below to drive the outer tube 16 of the camshaft.
  • a second output member is formed by an end plate 40 that carries three further vanes 19 received in the remaining three cavities 15 of the stator 13.
  • This output member 40 drives the inner shaft 30 of the camshaft 12.
  • the phaser 10 further includes a timing ring 27 and a spring 29 that biases the phaser towards a predetermined starting position, to set the timing when the engine oil pressure is insufficient to operate the phaser 10.
  • the camshaft 12 has a first camshaft bearing ring 14 mounted on the outer tube 16 that is formed with a number of threaded holes 18 into which are received the fasteners 20 for the first drive connection, fixing the first output member 21 of the first phaser to the first set of cam lobes 22.
  • the second drive connection is between the second output member 40 of the phaser and the inner shaft 30 that in turn drives the second set of cam lobes 32.
  • This second drive connection is achieved via a drive coupling 36 that can transmit drive torque without imposing any axial constraint between the phaser 10 and the inner shaft 30 of the camshaft 12, and a fastener 38 to secure the axial position of the inner shaft 30 relative to the output member 40 of the second hydraulic phaser.
  • the first camshaft bearing ring 14 is formed to receive two sets of fluid channels 42, 44 for controlling the first hydraulic phaser.
  • the first channel 42 communicates with the dual phaser via ports in the front face of the bearing ring 14 and the second channel 44 communicates by annular ports 50 that surround the fasteners 20 of the first drive connection.
  • An oil distribution member 60 is received into a bore in the front end of the dual phaser 10 to control a second hydraulic phaser output of which the output drives the inner shaft 30 of the concentric camshaft 12.
  • Figure 2 illustrates diagrammatically how this member 60 communicates with the outputs of an oil control valve 70 mounted separately on the engine.
  • the internal construction of a hydraulic dual phaser is known (see for example EP 2094948 ) and need not be described in detail in the present context.
  • the present invention is not concerned with the inner workings of a dual phaser, be it a dual hydraulic or a dual hybrid phaser, but with the manner in which a dual phaser that includes a hydraulic phaser is mounted to a concentric camshaft.
  • a second embodiment of the invention is illustrated in Figures 3 and 4 .
  • the first drive connection, the first camshaft bearing ring and control of the first hydraulic phaser output are all as described with reference to the first embodiment.
  • the components of the camshaft have been allocated the same reference numerals throughout this description and equivalent components of the interface in all the embodiments have been allocated reference numerals with the same two least significant digits.
  • the output member of the second phaser is connected to the second set of lobes via a high-friction washer 146 clamped between the inner shaft 30 of the camshaft 12 and the output member 140 of the second hydraulic phaser by a fastener 138 to secure their axial position.
  • a high friction surface could be provided on the end of the inner shaft 30 or on the output member 140 of the second hydraulic phaser.
  • a second bearing ring 180 of the concentric camshaft is formed in this second embodiment with a passage 182 to receive pressurised hydraulic fluid which is communicated to the dual phaser 110 via an annular space 184 between the inner shaft 30 and outer tube 16 of the concentric camshaft 12. This hydraulic fluid is then received by ports in the oil distribution member 160 which does not rotate with the camshaft.
  • Figure 4 also shows a section through the oil distribution member 160 illustrating that it is in communication with both the inputs and outputs of an oil control valve 170 mounted separately on the engine.
  • the input of the oil control valve receives pressurised fluid originating from the second camshaft bearing ring 180, which fluid is carried through the dual phaser 110 into the fluid distribution member 160.
  • the oil distribution member 160 then receives the outputs of the oil control valve 170 to control the second hydraulic phaser output.
  • FIG. 5 A third embodiment of the invention is illustrated in Figures 5 and 6 .
  • the drive connections to the outer tube 16 and the inner shaft 30, the design of the first camshaft bearing ring 14 and the control of the first hydraulic phaser output are all the same as described by reference to the first embodiment.
  • the second camshaft bearing ring 280 is formed with a passage to receive pressurised hydraulic fluid which is communicated to the dual phaser 210 via an annular space between the inner shaft 30 and outer tube 16 of the camshaft.
  • this pressurized fluid is received by an integral oil control valve 270 mounted in a bore of the dual phaser 210.
  • the oil control valve 270 may advantageously include a one-way valve and/or a filter.
  • Figure 6 shows that the integral oil control valve 270 receives its input from second camshaft bearing ring 280 to control the second hydraulic phaser output.
  • a solenoid 284 mounted on a stationary part of the engine, coaxially with the dual phaser 210, actuates the integral oil control valve 270 by axial displacement of the valve spool.
  • Figures 7 and 8 show the assembly of a hybrid dual phaser 310 to a concentric camshaft 12 and the method of providing a drive connection to the two sets of cam lobes.
  • the camshaft has a mounting plate 315 fitted to its front bearing 314 via a number of fasteners 317, and this mounting plate provides a number of studs 320 for mounting the dual phaser assembly 310, which can be secured by an equal number of nuts 321, this forming the first drive connection to the outer tube 16 of the camshaft 12.
  • the second drive connection between the electric phaser output and the inner driveshaft 30 of the camshaft is achieved via a drive coupling 336 that can transmit drive torque without imposing any axial constraint between the phaser and the inner shaft of the camshaft, and a fixing bolt 338 to secure the axial position of the inner shaft to the electric phaser output.
  • the first camshaft bearing ring 314 is formed to receive two fluid channels for controlling the hydraulic phaser output, with both channels communicating with the dual phaser via two sets of ports in the front face of the bearing ring.
  • the second camshaft bearing ring 380 is formed to receive lubricating oil, which fills an annular space between the inner shaft 30 and the outer tube 16 of the camshaft and is thereby communicated to the dual phaser 310 to lubricate a gearset 313 of the E-phaser.
  • camshaft outer tube 16 extends through the first camshaft bearing ring 314 in order to provide concentric location of the hybrid dual phaser 310 and accept radial forces of the drive gear/sprocket 311.
  • Figure 8 illustrates how an electric motor 375 is mounted to the engine coaxially with the hybrid dual phaser 310 to control the electric phaser.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
EP18170689.6A 2018-05-03 2018-05-03 Arbre à cames concentrique à interface de modulateur de phase double Withdrawn EP3564501A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18170689.6A EP3564501A1 (fr) 2018-05-03 2018-05-03 Arbre à cames concentrique à interface de modulateur de phase double

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18170689.6A EP3564501A1 (fr) 2018-05-03 2018-05-03 Arbre à cames concentrique à interface de modulateur de phase double

Publications (1)

Publication Number Publication Date
EP3564501A1 true EP3564501A1 (fr) 2019-11-06

Family

ID=62116306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18170689.6A Withdrawn EP3564501A1 (fr) 2018-05-03 2018-05-03 Arbre à cames concentrique à interface de modulateur de phase double

Country Status (1)

Country Link
EP (1) EP3564501A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3819481A1 (fr) * 2019-11-08 2021-05-12 Mahle International GmbH Agencement d'arbre à cames

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6971353B2 (en) 2003-07-24 2005-12-06 Daimlerchrysler Ag Camshaft adjustment control device
GB2424258A (en) 2005-03-18 2006-09-20 Mechadyne Plc Camshaft to phaser coupling
GB2432645A (en) * 2005-11-28 2007-05-30 Mechadyne Plc Variable phase drive coupling
DE102006028611A1 (de) * 2006-06-22 2007-12-27 Mahle International Gmbh Verstellbare Nockenwelle
DE102008033230A1 (de) * 2008-01-04 2009-07-09 Hydraulik-Ring Gmbh Doppelter Nockenwellenversteller in Schichtaufbau
EP2094948A1 (fr) 2006-12-19 2009-09-02 Mechadyne PLC Ensemble d'arbre à cames et de dispositif de mise en phase
US20100093453A1 (en) * 2008-10-09 2010-04-15 Schaeffler Kg Dual independent phasing system to independently phase the intake and exhaust cam lobes of a concentric camshaft arrangement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6971353B2 (en) 2003-07-24 2005-12-06 Daimlerchrysler Ag Camshaft adjustment control device
GB2424258A (en) 2005-03-18 2006-09-20 Mechadyne Plc Camshaft to phaser coupling
GB2432645A (en) * 2005-11-28 2007-05-30 Mechadyne Plc Variable phase drive coupling
DE102006028611A1 (de) * 2006-06-22 2007-12-27 Mahle International Gmbh Verstellbare Nockenwelle
EP2094948A1 (fr) 2006-12-19 2009-09-02 Mechadyne PLC Ensemble d'arbre à cames et de dispositif de mise en phase
DE102008033230A1 (de) * 2008-01-04 2009-07-09 Hydraulik-Ring Gmbh Doppelter Nockenwellenversteller in Schichtaufbau
US20100093453A1 (en) * 2008-10-09 2010-04-15 Schaeffler Kg Dual independent phasing system to independently phase the intake and exhaust cam lobes of a concentric camshaft arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3819481A1 (fr) * 2019-11-08 2021-05-12 Mahle International GmbH Agencement d'arbre à cames

Similar Documents

Publication Publication Date Title
US8051818B2 (en) Dual independent phasing system to independently phase the intake and exhaust cam lobes of a concentric camshaft arrangement
US8122863B2 (en) Camshaft phaser for the inner camshaft of a concentric camshaft assembly
US8375906B2 (en) Camshaft phaser for a concentric camshaft
EP2094948B1 (fr) Ensemble d'arbre à cames et de dispositif de mise en phase
EP1286023B1 (fr) Déphaseur pour un moteur à combustion interne à quatre cylindre
US7243626B2 (en) Camshaft adjuster
EP2067961B1 (fr) Dispositif de couplage
EP3141711A1 (fr) Déphaseur d'arbre à cames double
US8322318B2 (en) Harmonic drive camshaft phaser with phase authority stops
US8726865B2 (en) Harmonic drive camshaft phaser using oil for lubrication
US8336512B2 (en) Camshaft phaser for a concentric camshaft
JP2012219815A (ja) 独立した位相整合およびロックピン制御を行うカムシャフト位相器
KR20110059594A (ko) 캠축 조정기
GB2472054A (en) Phaser assembly for an internal combustion engine
US9103240B2 (en) Camshaft adjuster
US20080196681A1 (en) Mounting of an scp camshaft on an engine
WO2016133782A1 (fr) Modulateur de phase d'arbre à cames
GB2433974A (en) Mounting of a SCP (single cam phaser) camshaft on an engine
US8113160B2 (en) Camshaft phasing system
EP3564501A1 (fr) Arbre à cames concentrique à interface de modulateur de phase double
WO2016021328A1 (fr) Valve oléo-hydraulique, et dispositif de commande de réglage de distribution pour moteur à combustion interne mettant en œuvre une valve oléo-hydraulique
US20190360364A1 (en) Coupling for a camshaft phaser arrangement for a concentric camshaft assembly
CN108350768B (zh) 凸轮轴调节设备
US20110041788A1 (en) Camshaft adjusting system
US11041413B2 (en) Hybrid dual electric and hydraulically operated phaser

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

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

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

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20200603