WO2002002390A1 - Bearing unit with integrated nut, and actuator comprising such unit - Google Patents

Bearing unit with integrated nut, and actuator comprising such unit Download PDF

Info

Publication number
WO2002002390A1
WO2002002390A1 PCT/NL2001/000505 NL0100505W WO0202390A1 WO 2002002390 A1 WO2002002390 A1 WO 2002002390A1 NL 0100505 W NL0100505 W NL 0100505W WO 0202390 A1 WO0202390 A1 WO 0202390A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing unit
inner ring
balls
raceways
unit according
Prior art date
Application number
PCT/NL2001/000505
Other languages
French (fr)
Inventor
Hendrikus Jan Kapaan
Jerome Dubus
Christiaan Boch
Original Assignee
Skf Engineering And Research Centre B.V.
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 Skf Engineering And Research Centre B.V. filed Critical Skf Engineering And Research Centre B.V.
Priority to AU2001271135A priority Critical patent/AU2001271135A1/en
Publication of WO2002002390A1 publication Critical patent/WO2002002390A1/en

Links

Classifications

    • 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0442—Conversion of rotational into longitudinal movement
    • B62D5/0445—Screw drives
    • B62D5/0448—Ball nuts
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut
    • 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls

Definitions

  • the invention is related to the field of mechanical actuators, in particular ball screw or roller screw actuators for application in vehicle steering mechanisms.
  • mechanical actuators in particular ball screw or roller screw actuators for application in vehicle steering mechanisms.
  • such actuators are equipped with inserts for making the balls or rollers in question move, after travelling through each full winding, from one screw thread part to the neighbouring screw thread part.
  • inserts for making the balls or rollers in question move, after travelling through each full winding, from one screw thread part to the neighbouring screw thread part.
  • several of those inserts are applied along the length of the nut, for transferring corresponding sets of balls or rollers between adjacent screw thread parts.
  • the invention is aimed at providing a stable layout of such actuator, which incorporates bearings with balls and/or rollers as well as a nut part for a screw mechanism provided with inserts.
  • This aim is achieved by providing first of all a bearing unit with an integrated nut for a ball screw mechanism, said unit comprising an outer ring with two raceways which are spaced in axial direction, an inner ring with correspondingly spaced raceways, and two sets of balls which are each accommodated in a pair of radially opposite raceways of the outer ring and the inner ring, said inner ring at its inner surface having a screw thread for accommodating the balls or rollers of a ball respectively roller screw mechanism, at least one insert being provided for passing the screw mechanism balls or rollers from one screw thread part to an adjacent screw thread part, said insert being positioned between the raceways of the inner ring.
  • a bearing unit of this type is fit for accommodation in a ball screw or roller screw actuator.
  • the inserts and thus the balls or rollers are applied in a part of the inner ring of the bearing which is situated between both raceways. This provides a very compact layout, and also a very stable support of the nut.
  • the inserts can be mounted from the outside of the nut, before it is assembled with the outer ring of the bearing unit. Preferably, at least at the position of each insert the outer surface of the inner ring can be covered by a sleeve.
  • the outer and inner rings may consist each of one part; in the alternative, the outer ring may comprise at least two parts, each of said two parts comprising a raceway, and the inner ring may consist of two inner ring sections connected to opposite ends of a nut section.
  • the invention is also related to an actuator wherein a screw engages the inner ring screw thread of the bearing unit through a sensor of screw mechanism balls, and an electric motor, the stator of the electric motor being connected to outer ring of the bearing unit.
  • This actuator may be applied for steer-by- wire functions, brake-by- wire functions, clutch-by-wire functions, gear shift-by-wire functions etc.
  • Fig. 1 shows a bearing unit according to the invention.
  • Fig. 2 shows a screw actuator comprising such bearing unit.
  • the bearing unit 1 shown in fig. 1 comprises a bearing 27, consisting of an outer ring 3 having two raceways 4, 5, an inner ring 30 having two correspondingly spaced raceways 7, 8, and two sets of balls 9, 10 which are each accommodated in a pair of radially opposite raceways 4, 5; 7, 8.
  • the inner ring 30 has a screw thread 2, which is fit for engagement with the balls of a ball screw mechanism (said balls and the screw of the ball screw mechanism not being shown in fig. 1).
  • inserts 13 have been provided.
  • the inner ring 30 constitutes a nut 6 at the location of the internal screw thread 2.
  • the screw 10 and also the inserts 3 are positioned between the two sets of balls 4, 5. Thereby, a very stable embodiment and support of the ball screw mechanism can be ascertained.
  • the inserts 13 can be easily applied to the nut 2 from the outside before assembling the bearing.
  • Fig. 2 shows an embodiment wherein the full screw mechanism 12 is shown, that is including the screw 23 and the screw balls 11. These screw balls 11 engage the screw thread 2 of the inner ring 30, as well as the screw thread 28 of the screw 23.
  • the outer ring 3 is assembled from two outer ring pieces 15, 17 which each have a raceway 7 respectively 8, mounted into appropriately shaped recesses of the main outer ring part 29 which also carries a mounting flange 22.
  • the outer ring parts 15, 17 may be connected to the main outer ring part 29 by means of energy welding like laser welding. Alternatively, these parts can be mechanically locked, e.g. by means of a nut or mechanical upsetting.
  • the inner ring 28 also comprises two ring sections 18, 19 which are connected to opposite ends of a separate nut section 20. At the outer surface of the nut section 20, a sleeve 14 is mounted for keeping the inserts 13 in place. Alternatively, the inserts may be mounted by e.g. glueing.
  • the inner ring section 19 has been provided with an integrated tooth gear wheel
  • this tooth gear wheel 21 for driving purposes.
  • this tooth gear wheel 21 may form part of a reduction gear mechanism which is driven through an electric motor (not shown).
  • the rotor of the electric motor may be directly mounted to the inner ring 6, also in an embodiment not shown.
  • the embodiment of fig. 1 and 2 comprises a so-called O-configuration for the raceways 4, 5; 7, 8 and sets of balls 9, 10.
  • this layout may also be a so-called X-configuration, that is with the main force lines 24, 25 of the bearings pointing towards one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Transmission Devices (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

A bearing unit (1) with integrated nut (6) for a ball screw mechanism comprises an outer ring (3) with two raceways (4, 5) which are spaced in axial direction, an inner ring (30) with correspondingly spaced raceways (7, 8), and two sets of balls (9, 10) which are each accommodated in a pair of radially opposite raceways (4, 5, 7, 8) of the outer ring (3) and the inner ring, said inner ring (30) at its inner surface having a screw thread (2), for accommodating the balls or rollers of a ball (11) respectively roller screw mechanism (12), at least one insert being provided for passing the screw mechanism balls (11) or rollers from one screw thread part to a neighbouring screw thread part, said insert (13) being positioned between the raceways (7, 8) of the inner ring (30).

Description

Bearing unit with integrated nut, and actuator comprising such unit
The invention is related to the field of mechanical actuators, in particular ball screw or roller screw actuators for application in vehicle steering mechanisms. In view of space constraints such actuators are equipped with inserts for making the balls or rollers in question move, after travelling through each full winding, from one screw thread part to the neighbouring screw thread part. Usually, several of those inserts are applied along the length of the nut, for transferring corresponding sets of balls or rollers between adjacent screw thread parts. The invention is aimed at providing a stable layout of such actuator, which incorporates bearings with balls and/or rollers as well as a nut part for a screw mechanism provided with inserts. This aim is achieved by providing first of all a bearing unit with an integrated nut for a ball screw mechanism, said unit comprising an outer ring with two raceways which are spaced in axial direction, an inner ring with correspondingly spaced raceways, and two sets of balls which are each accommodated in a pair of radially opposite raceways of the outer ring and the inner ring, said inner ring at its inner surface having a screw thread for accommodating the balls or rollers of a ball respectively roller screw mechanism, at least one insert being provided for passing the screw mechanism balls or rollers from one screw thread part to an adjacent screw thread part, said insert being positioned between the raceways of the inner ring. A bearing unit of this type is fit for accommodation in a ball screw or roller screw actuator. The inserts, and thus the balls or rollers are applied in a part of the inner ring of the bearing which is situated between both raceways. This provides a very compact layout, and also a very stable support of the nut. The inserts can be mounted from the outside of the nut, before it is assembled with the outer ring of the bearing unit. Preferably, at least at the position of each insert the outer surface of the inner ring can be covered by a sleeve.
The outer and inner rings may consist each of one part; in the alternative, the outer ring may comprise at least two parts, each of said two parts comprising a raceway, and the inner ring may consist of two inner ring sections connected to opposite ends of a nut section.
The invention is also related to an actuator wherein a screw engages the inner ring screw thread of the bearing unit through a sensor of screw mechanism balls, and an electric motor, the stator of the electric motor being connected to outer ring of the bearing unit.
The bearing space as well as the space between the screw and the inner ring are sealed and lubricated for life. This actuator may be applied for steer-by- wire functions, brake-by- wire functions, clutch-by-wire functions, gear shift-by-wire functions etc.
The invention will now be described further with reference to the embodiments shown in the drawings.
Fig. 1 shows a bearing unit according to the invention. Fig. 2 shows a screw actuator comprising such bearing unit.
The bearing unit 1 shown in fig. 1 comprises a bearing 27, consisting of an outer ring 3 having two raceways 4, 5, an inner ring 30 having two correspondingly spaced raceways 7, 8, and two sets of balls 9, 10 which are each accommodated in a pair of radially opposite raceways 4, 5; 7, 8. At its inner surface, the inner ring 30 has a screw thread 2, which is fit for engagement with the balls of a ball screw mechanism (said balls and the screw of the ball screw mechanism not being shown in fig. 1). For recirculating said balls, inserts 13 have been provided. Thus, the inner ring 30 constitutes a nut 6 at the location of the internal screw thread 2.
As shown in fig. 1, the screw 10 and also the inserts 3 are positioned between the two sets of balls 4, 5. Thereby, a very stable embodiment and support of the ball screw mechanism can be ascertained. The inserts 13 can be easily applied to the nut 2 from the outside before assembling the bearing.
Fig. 2 shows an embodiment wherein the full screw mechanism 12 is shown, that is including the screw 23 and the screw balls 11. These screw balls 11 engage the screw thread 2 of the inner ring 30, as well as the screw thread 28 of the screw 23.
In the embodiment of fig. 2, the outer ring 3 is assembled from two outer ring pieces 15, 17 which each have a raceway 7 respectively 8, mounted into appropriately shaped recesses of the main outer ring part 29 which also carries a mounting flange 22. The outer ring parts 15, 17 may be connected to the main outer ring part 29 by means of energy welding like laser welding. Alternatively, these parts can be mechanically locked, e.g. by means of a nut or mechanical upsetting.
Cages 16 are applied for maintaining the desired mutual distance of the balls 9, 10. The inner ring 28 also comprises two ring sections 18, 19 which are connected to opposite ends of a separate nut section 20. At the outer surface of the nut section 20, a sleeve 14 is mounted for keeping the inserts 13 in place. Alternatively, the inserts may be mounted by e.g. glueing. The inner ring section 19 has been provided with an integrated tooth gear wheel
21 for driving purposes. For instance, this tooth gear wheel 21 may form part of a reduction gear mechanism which is driven through an electric motor (not shown).
In the alternative, the rotor of the electric motor may be directly mounted to the inner ring 6, also in an embodiment not shown. The embodiment of fig. 1 and 2 comprises a so-called O-configuration for the raceways 4, 5; 7, 8 and sets of balls 9, 10. Alternatively of course, this layout may also be a so-called X-configuration, that is with the main force lines 24, 25 of the bearings pointing towards one another.

Claims

Claims
1. Bearing unit (1) with integrated nut (6) for a ball screw mechanism, said unit (1) comprising an outer ring (3) with two raceways (4, 5) which are spaced in axial direction, an inner ring (30) with correspondingly spaced raceways (7, 8), and two sets of balls (9, 10) which are each accommodated in a pair of radially opposite raceways (4,5; 7,8) of the outer ring (3) and the inner ring (30), said inner ring (30) at its inner surface having a screw thread (2) for accommodating the balls (11) or rollers of a ball respectively roller screw mechanism (12), at least one insert (13) being provided for passing the screw mechanism balls (11) or rollers from one screw thread part to a neighbouring screw thread part, said insert (13) being positioned between the raceways (7, 8) of the inner ring (30).
2. Bearing unit according to claim 1 , wherein at least at the position of each insert (13) the outer surface of the inner ring (30) is covered by a sleeve (14).
3. Bearing unit according to claim 1 or 2, wherein the outer ring (3) comprises at least two parts (15, 17), each of said two parts (15, 17) comprising a raceway (7, 8).
4. Bearing unit according to claim 1, 2 or 3, wherein the inner ring (30) consists of two inner ring sections (18, 19) connected to opposite ends of a nut section (20).
5. Bearing unit according to any of the preceding claims, wherein the inner ring (30) or the outer ring (3) carries an integrated drive means (21), e.g. a tooth wheel.
6. Bearing unit according to any of the preceding claims, wherein the outer ring (3) has a radially outwardly extending mounting flange (22) having e.g. mounting holes, screw thread etc.
7. Bearing unit according to any of the preceding claims, wherein the bearing space is lubricated and sealed for life.
8. Bearing unit according to any of the preceding claims, wherein at least one sensor is incorporated for sensing e.g. a rotation, load or temperature of a rotating and/or translating screw part and/or of the raceways and rollers.
9. Bearing unit according to any of the preceding claims, wherein at least one of the sets of balls (9, 10) is a full complement set of balls.
10. Bearing unit according to any of the preceding claims, wherein at least one of the sets of balls (9, 10) comprises a cage.
11. Bearing unit according to one of the preceding claims, wherein the raceways (4, 5; 7, 8) and sets of balls (9, 10) constitute an O-configuration.
12. Bearing unit according to one of the preceding claims, wherein the raceways (4, 5; 7, 8) and sets of balls (9, 10) constitute an X-configuration.
13. Actuator, comprising a bearing unit (1) according to any of the preceding claims, a screw (23) engaging the inner ring screw thread (2) of the bearing unit through a series of screw mechanism balls (11), and an electric motor, the stator of the electric motor being connected to outer ring (3) of the bearing unit (1).
14. Actuator, according to claim 9, wherein the rotor of the electric motor (24) engages the inner ring (30) of the bearing unit (1), either directly or through a reduction transmission.
15. Actuator according to claim 13 or 14, wherein the bearing space as well as the space between the screw (23) and the inner ring (6) are sealed and lubricated for life.
PCT/NL2001/000505 2000-07-04 2001-07-04 Bearing unit with integrated nut, and actuator comprising such unit WO2002002390A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001271135A AU2001271135A1 (en) 2000-07-04 2001-07-04 Bearing unit with integrated nut, and actuator comprising such unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1015601 2000-07-04
NL1015601A NL1015601C2 (en) 2000-07-04 2000-07-04 Bearing unit with integrated nut, and actuator with such a unit.

Publications (1)

Publication Number Publication Date
WO2002002390A1 true WO2002002390A1 (en) 2002-01-10

Family

ID=19771654

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2001/000505 WO2002002390A1 (en) 2000-07-04 2001-07-04 Bearing unit with integrated nut, and actuator comprising such unit

Country Status (3)

Country Link
AU (1) AU2001271135A1 (en)
NL (1) NL1015601C2 (en)
WO (1) WO2002002390A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1655513A1 (en) * 2004-11-05 2006-05-10 Stabilus GmbH Positioning device
WO2017220715A1 (en) * 2016-06-22 2017-12-28 Thyssenkrupp Presta Ag Ball screw of an electromechanical power steering system having an integrated angular-contact ball bearing
WO2017220713A1 (en) * 2016-06-22 2017-12-28 Thyssenkrupp Presta Ag Ball screw drive of an electromechanical power steering device with deflecting bodies for a ball return
WO2022033981A1 (en) 2020-08-12 2022-02-17 Innate Pharma Subcutaneous anti-c5ar antagonist treatment regimen with avdoralimab

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59131059A (en) * 1983-11-28 1984-07-27 Hiroshi Teramachi Ball screw with angular contact ball bearing
DE4438972A1 (en) * 1993-12-27 1995-06-29 Nsk Ltd Ball circulating spindle with internal return
EP0673827A1 (en) * 1994-03-17 1995-09-27 Nsk Ltd Electrically-operated power steering apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59131059A (en) * 1983-11-28 1984-07-27 Hiroshi Teramachi Ball screw with angular contact ball bearing
DE4438972A1 (en) * 1993-12-27 1995-06-29 Nsk Ltd Ball circulating spindle with internal return
EP0673827A1 (en) * 1994-03-17 1995-09-27 Nsk Ltd Electrically-operated power steering apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 258 (M - 340) 27 November 1984 (1984-11-27) *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1655513A1 (en) * 2004-11-05 2006-05-10 Stabilus GmbH Positioning device
WO2017220715A1 (en) * 2016-06-22 2017-12-28 Thyssenkrupp Presta Ag Ball screw of an electromechanical power steering system having an integrated angular-contact ball bearing
WO2017220713A1 (en) * 2016-06-22 2017-12-28 Thyssenkrupp Presta Ag Ball screw drive of an electromechanical power steering device with deflecting bodies for a ball return
CN109311507A (en) * 2016-06-22 2019-02-05 蒂森克虏伯普利斯坦股份公司 The ball-screw of electromechanical power steering system with one-piece corner connection touching ball bearing
CN109311505A (en) * 2016-06-22 2019-02-05 蒂森克虏伯普利斯坦股份公司 The ball-screw-transmission part of electromechanical power transfer with the deflection ontology for returning to ball
US10913484B2 (en) 2016-06-22 2021-02-09 Thyssenkrupp Presta Ag Ball screw drive of an electromechanical power steering device with deflecting bodies for a ball return
CN109311505B (en) * 2016-06-22 2021-07-06 蒂森克虏伯普利斯坦股份公司 Ball screw drive for an electromechanical power steering device having a deflecting body for returning balls
CN109311507B (en) * 2016-06-22 2022-03-29 蒂森克虏伯普利斯坦股份公司 Ball screw for an electromechanical power steering system with an integrated angular contact ball bearing
WO2022033981A1 (en) 2020-08-12 2022-02-17 Innate Pharma Subcutaneous anti-c5ar antagonist treatment regimen with avdoralimab

Also Published As

Publication number Publication date
NL1015601C2 (en) 2002-01-08
AU2001271135A1 (en) 2002-01-14

Similar Documents

Publication Publication Date Title
US6957919B2 (en) Double-row angular contact ball bearing
EP2511568B1 (en) In-wheel motor drive device
EP2180210B1 (en) Reduction gear
CN109311505B (en) Ball screw drive for an electromechanical power steering device having a deflecting body for returning balls
KR101439584B1 (en) A bearing assembly with overmoulded annular bodies of plastic material
US20030051569A1 (en) Screw actuator
KR20150005989A (en) Bearing arrangement in an axial drive
JP6047999B2 (en) Rotating support device
US6516680B1 (en) Power steering apparatus
EP2233789A1 (en) Ball screw device
KR100565400B1 (en) Power steering
CA1298336C (en) Roller bearing
JP2005351480A (en) Steering column device and rolling bearing for column
WO2002002390A1 (en) Bearing unit with integrated nut, and actuator comprising such unit
FR2806135B1 (en) STEERING COLUMN BEARING FOR MOTOR VEHICLES
EP0945650B1 (en) Silk hat flexible engagement gear device
WO2008104198A1 (en) Differential gear unit
JP2005214330A (en) Four-point contact ball bearing and manufacturing method thereof
KR20210095119A (en) Steering system with pivot bearings
US5667455A (en) Reduction gear unit
JP2005178663A (en) Motor-driven wheel driving device
US7032470B2 (en) Yoke bearing providing improved support
JP7222263B2 (en) electric power steering device
JP4223209B2 (en) Pinion shaft support bearing unit
JP4775219B2 (en) Electric power steering device

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

DPE2 Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)