CN104145138B - Method for manufacturing planetary roller screw gear - Google Patents
Method for manufacturing planetary roller screw gear Download PDFInfo
- Publication number
- CN104145138B CN104145138B CN201380011459.5A CN201380011459A CN104145138B CN 104145138 B CN104145138 B CN 104145138B CN 201380011459 A CN201380011459 A CN 201380011459A CN 104145138 B CN104145138 B CN 104145138B
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- CN
- China
- Prior art keywords
- annular element
- slot
- nut
- shape
- planetary
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000004744 fabric Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 description 17
- 239000011295 pitch Substances 0.000 description 15
- 238000010276 construction Methods 0.000 description 9
- 238000007667 floating Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002000 scavenging effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
- F16H25/2252—Planetary rollers between nut and screw
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
A kind of planetary roller screw gear, it is with thread lead screw (1), the feed screw nut (2) being arranged in thread lead screw (1), the planetary member (3) of multiple distribution ground arrangements on the periphery of feed screw nut (2), wherein, the annular element (5 that feed screw nut (2) has supporting body (4) and is arranged in supporting body (4), 6), the annular element is equipped with the slot type type face (10 of the nut side in the slot type type face (19) of the planetary member side for being engaged to planetary member (3) in inner circumference, 11), wherein, annular element (5, 6) wall thickness (s) is less than the slot type type face (10 of nut side, 11) 4 times of profile (h), and at least its 1.5 times.
Description
Technical field
The present invention relates to a kind of planetary roller screw gears, by thread lead screw and the feed screw nut being disposed thereon
Between the axially opposing movement be converted between thread lead screw and feed screw nut.
Background technology
A kind of planetary roller screw gear as known in 10201011820 A1 of DE has and is arranged in screw thread silk
Feed screw nut on thick stick and multiple planetary members arranged to distribution on the periphery of feed screw nut.Feed screw nut have supporting body and
The annular element being arranged in supporting body, these annular elements are equipped with the planetary member side for engaging planetary member on inner periphery respectively
The slot type type face of the nut side in slot type type face.
The multiple piece construction of feed screw nut can realize that the slot type type face for economically providing nut side, the slot type type face are frequent
It is formed by (steigungslos) slot of multiple non-inclined, these fluted shafts are to arranging successively and in parallel to each other.These slot sheets
Body closely, i.e., continuously (endlos), and is arranged transverse to feed screw nut axis.Slot pitch (that is, spacing of slot and slot) and
Groove depth can be implemented according to the of different sizes of planetary roller screw gear.
In well known planetary roller screw gear, annular element is made of plank with deformation method, wherein slot rolling
Tool carries out rolling.When annular element is hardened with heat treating process, undesirable hardening deforming can be generated, the hardening deforming
The assembly in annular element to supporting body is set to become difficult.
Invention content
The task of the present invention is illustrate a kind of planetary roller screw gear that can simply assemble.
According to the present invention, which is solved by planetary roller screw gear according to claim 1.Due to ring
The wall thickness of shape part is less than 4 times of profile h of the slot type type face of nut side and at least its 1.5 times, so annular element can be with
Flexibly and/or plastically deform；Although hardening deforming has occurred after the heat treatment, relative to well known annular element, root
It remains able to realize according to this ability of the annular element of the thin-walled of the present invention and be put into supporting body.Not according to hardening deforming
Together, due to being pressed into, annular element can be also extraly plastically deformed other than flexible deformation and become the shape of its circle.Hardening becomes
Shape is received, and can be cancelled to the bothersome reprocessing of hardened annular element.
Half of the wall thickness corresponding to the diameter difference of overall diameter and interior diameter.Interior diameter is limited by the crown of the tooth of restriction slot
It is fixed.The profile in the type face of nut side is provided by the radial spacing between the crown of tooth and the trench bottom of slot.
Supporting body can be respectively equipped with the fulcrum bearing of cylinder shape on its end, wherein annular element is set as floating support
Part or fixed support.If annular element since hardening deforming is no longer round shape, but such as substantially elliptical become
Shape is forced to become the shape of its circle when then being set as the annular element of fixed support in the fulcrum bearing for being pushed into its cylinder shape
Shape.The deformation can be realized (with wall thickness according to the present invention and profile ratio) by implementing to thin-walled annular element.Annular element has
Rigidity more smaller than supporting body.
In range according to the present invention, have in the outer straight of 80mm to the big overall diameter or bigger between 100mm
The annular element of diameter can have larger wall thickness in upper area；In range according to the present invention, have 15mm extremely
The annular element of small overall diameter between 40mm can have smaller wall thickness in lower area.In each case, wall thickness
All it is arranged as follows according to the present invention, that is, can revert to circle to zero defect in the case of undesirable hardening deforming
Shape.All annular elements are had in common that, are provided with the wall thickness smaller relative to profile, the wall thickness is according to this
The recovery of hardening deforming can be realized in the range of invention.
If annular element is arranged in as floating support part in supporting body, which can be with enough gap cloth
It sets in fulcrum bearing.The gap can coordinate in transitionIn the case of provide.If by ring
Still determination has hardening deforming after in shape part merging fulcrum bearing, then the hardening deforming by planetary member by being engaged to annular element
In compensate.
Planetary member is arranged with being distributed on periphery.These planetary members are equipped with so-called feeding in their central region
Slot, these feed slots are engaged with the screw rolling of thread lead screw.Planetary member is respectively provided with so-called guiding on two end
Slot, these guiding grooves are moved with the trough roller of nut side and are engaged.Planetary member zero defect ground wrapping wire on circuit orbit in feed screw nut
Thick stick and around feed screw nut operate.It is engaged with the rolling of annular element by planetary member, therefore annular element is configured to the shape of its circle.
In meaning of the present invention, round shape can realize rolling of the planetary member in feed screw nut upper edge circuit orbit around leading screw nut shaft line
It is dynamic.
The present invention another advantage can be：Planetary roller screw gear according to the present invention alleviates weight；This
It is because the wall of annular element according to the present invention is thinner than the wall of well known annular element.When especially applying in automotive field,
The weight saving is particularly advantageous.
Another advantage can be：Material can be saved, this is because especially in the case of big number of packages, the reduction of wall thickness
Along with significantly reducing for used material.
The slot being arranged on annular element can be with very high precision and very narrow tolerance rolling method, especially with public affairs itself
The loop scavenging (Ringwalzverfahren) known shapes.Annular element is arranged in the rolling gap of tool, and can be in width
By accurately rolling in terms of degree, thickness and type face.Constant thickness especially on periphery rolls annular element in planet
It is critically important for functionality in sub- screw gear.The final profile of annular element is produced after looping mill rolling, also
It is the overall diameter and rolling pitch diameter for planetary member
In planetary roller screw gear according to the present invention, profile h can be in 0.4mm to (packet between 3mm
Including including 0.4mm and 3mm).In the case of the medium profile h of 1.5mm, annular element according to the present invention can basis
The difference of overall diameter range has about 2.2mm to close to the wall thickness between 6mm.
Planetary roller screw gear according to the present invention have following annular element, with 5mm between 25mm
In the case of the construction package of leading screw diameter, the profile of these annular elements can be 0.6mm, wherein slot pitch is in the situation
Under can be 1.03mm.In the case of the construction package with 32mm to the leading screw diameter between 63mm, profile can be with
It is 0.8mm, wherein slot pitch can be 1.35mm.The construction package with 80mm to the leading screw diameter between 110mm the case where
Under, profile can be 1.2mm, wherein slot pitch can be 2mm.It has learned that, the construction package mentioned the case where
The annular element that can be well deformed in illustrated range can be produced down, these annular elements again can be with after hardening deforming
Become the shape of its circle.It is located at about 1mm and less than between 5mm for the wall thickness for the construction package mentioned, wherein maximum
Maximum wall thickness is provided in the case of construction package.
The annular slot being closed that the slot type type face of nut side can have multiple axial directions successively and arrange in parallel to each other,
In, slot is limited by the tooth adjacent to each other of annular element, and wherein, these teeth extend radially outwardly into trench bottom, and radial
Crown is extended inwardly into, and wherein, profile is provided by the radial spacing of crown and trench bottom.Roll pitch diameter position
Between trench bottom diameter and crown diameter.
Crown and trench bottom can be respectively provided with the radius of curvature including 0.1mm to 0.5mm (containing), wherein the song of crown
Rate radius is more than the radius of curvature of trench bottom.The radius of curvature of trench bottom is mutually coordinated with the radius of curvature of the crown of the tooth engaged.
Annular element with big overall diameter can be with the radius of curvature in the upper end of illustrated range on crown and trench bottom.
Radius of curvature can mutually be coordinated with set slot pitch.Slot type type face can have multiple axial directions successively and arrange in parallel to each other
Continuous slot, slot pitch can be 0.8mm to 4mm.Annular element can have following width, which is at least slot type type face
Slot pitch three times and preferably at most 11 times of the slot pitch.
The interior diameter of annular element can be arranged 14mm between 150mm (including 14mm and 150mm).Interior diameter can
It is limited with crown by slot type type face.
From the direction of leading screw axis, supporting body can be respectively equipped with one of ring on two axial end portion
Shape part, wherein supporting body is respectively provided with the receiving portion for each annular element, and wherein, and an annular element is as fixed branch
Bearing member and another annular element is arranged in as floating support part in the receiving portion of supporting body.The preferred hollow cylinder-like of receiving portion it is real
Shi Weikong.Receiving portion can be equipped with the immigration bevel edge for importing annular element on its side towards end side.Receiving portion it is another
End can be limited by convex shoulder.
Planetary roller screw gear according to the present invention can manufacture as follows：It provides with cylinder shape
The slot type type face of nut side is rolled onto on the inner periphery of ring blank and and then with heat treating process by the ring blank of all sides
It is hardened, annular element is placed in supporting body.The further processing to annular element can be cancelled.
The rolling in slot type type face can realize that the manufacture of annular element, these annular elements are engaged in rolling in an advantageous manner
In rolling counterpart friction reduction in terms of optimized：Spring back to type surface elastic through rolling, it is light to make flank have
Micro- convexity；This means that ensuring the point contact with smaller friction in being in rolling contact.
The economic manufacture of annular element can be realized by carrying out deformation using rolling method, and the complicated type face of annular element can be high
It shapes to precision, wherein the line for being conducive to be placed in annular element in planetary roller screw gear is realized in annular element
Reason distribution (Faserverlauf).
Ring blank can be provided by plank by deep-draw, or be provided by machining.It is partitioned by pipe
Tube section is also used as ring blank.
The appearance that one annular element for being set as fixed support constructs in which can be pressed into the preferred hollow cylinder-like of supporting body
It receives in portion, and another annular element for being set as floating support part can be placed in another receiving portion of supporting body.One ring
Shape part can be by being pressed into the shape for flexibly and/or plastically being deformed in receiving portion and becoming its circle.Supporting body compares annular element
Obviously implement to obtain rigidity higher, to which receiving portion keeps the shape of its cylinder shape during being pressed into.
The planetary member being arranged on leading screw periphery can be by being sticked on the inner periphery of annular element by another annular element
Shape that is upper and becoming its circle.Planetary member is arranged with being equally spaced on the periphery of thread lead screw, and is limited and rolled section
Supporting point on circle.The annular element of elastically deformable can be supported on the supporting point of circuit orbit and obtain the shape of its circle,
It is i.e. round.
Description of the drawings
Next the present invention is elaborated by the embodiment described in both figures.Wherein：
Fig. 1 shows the longitudinal section across planetary roller screw gear according to the present invention；
Fig. 2 shows the partial enlarged views of Fig. 1.
Specific implementation mode
Fig. 1 shows planetary roller screw gear according to the present invention with longitudinal section.Feed screw nut 2 is arranged in screw thread
On leading screw 1.Multiple planetary members 3 being distributed on the periphery of thread lead screw 1 are disposed between thread lead screw 1 and feed screw nut 2.
Planetary member 3 rolls on the outer periphery of thread lead screw 1 and on the inner periphery of feed screw nut 2.
Implement to 2 multi-piece type of feed screw nut.Two annular elements 5,6 can be arranged in herein tube-shaped structure to axial relative movement
In the supporting body 4 made.Sky of the construction on an end of supporting body 4 can be pressed by being set as the annular element 5 of fixed support
In the receiving portion 7 of the stem bodily form, and another annular element 6 for being set as floating support part can axially movably be placed in supporting body
In receiving portion 8 of 4 construction on the other end of supporting body 4, wherein another annular element 6 is arranged in transition fit system
In another receiving portion 8.Annular element 6 is in this embodiment by disk spring 9 by axially spring loads.Other according to this hair
It can cancel the spring assembly in bright planetary roller screw gear.
Annular element 5,6 is equipped with the slot type type face 10,11 of nut side on their inner periphery, is respectively provided with multiple axial directions
Successively and slot arranging in parallel to each other, being circlewise closed 12,13.Slot 12,13 is arranged transverse to feed screw nut axis；These
Slot is non-inclined.
Slot 12,13 is limited by the tooth 14,15 adjacent to each other of annular element 5,6.The description of annular element 10 is also suitable below
In annular element 11.
From Fig. 2 it is clear that tooth 14 extends radially outwardly into trench bottom 16, and extend radially inwardly to crown
17.The radial spacing of crown 17 to trench bottom 16 is referred to as the profile " h " in slot type type face 10.
Crown 17 has the radius of curvature of 0.2mm, and trench bottom has the radius of curvature of 0.1mm.According to the present invention
In annular element, the radius of curvature of crown is more than the radius of curvature of trench bottom, so as to avoid so-called tooth top load-bearing partWherein, tooth loads with not allowed in tooth top region.
In embodiment, the spacing of slot 12 adjacent to each other is 2mm, wherein the spacing of crown 17 to crown 17 is measured.
The spacing can also be referred to as slot pitch " t ".
Annular element 5 has width " b ", which is, for example, ten times of slot pitch.Annular element 6 has width " b ", the width example
Three times of slot pitch " t " in this way.
The interior diameter of annular element 5,6 passes through interior diameter " di" determine.Overall diameter " the d of annular element 5,6a" indicate.“da”
With " di" difference half indicate annular element 5,6 wall thickness " s ".In embodiment, wall thickness " s " is, for example, 2mm, interior diameter " di”
E.g. 55mm, profile " h " is 0.8mm, and slot pitch " t " is 1.35mm.For the reason of preferably show, these values exist
It is not drawn to convert in figure.
Annular element 5,6 is made of the ring blank of all sides equipped with cylinder shape.The slot type type face 10 of nut side is with itself
Well known loop scavenging is rolled onto on ring blank.It is so-called to produce since rolling causes material to converge on crown 17
Closed fold (Schlie β falte), which shows as circular slight dent on crown 17.And then, ring
Shape part 5,6 is hardened with heat treating process.Due to hardening, annular element 5,6 is by hardening deforming, and the shape distortion justified by it
For elliptical shape.When annular element 5,6 be placed in planetary roller screw gear in when, according to the present invention design annular element 5,
6 shape again with its circle.
Annular element 5 is due to being pressed into the shape for deforming in the receiving portion 7 of hollow cylinder-like and becoming its circle.Supporting body
4 relative to annular element 5,6 apparent rigidity highers, and will not deform due to being pressed into.During being pressed into, annular element 5 is not
It can also can only deform flexibly and plastically.But it may ensure that slot type type face 10 and planet in each case
Work together to 3 zero defect of part.
Another annular element 6 is arranged in radial gap in the receiving portion 8 of hollow cylinder-like.The evenly distributedly cloth on periphery
3 side of planetary member set is radially supported in thread lead screw 1, and the other side is radially supported on annular element 5,6.Annular element 5,6
Tooth 17 be engaged to planetary member 3 planetary member side slot type type face 19 guiding groove 18 in.Thread lead screw 1 is threadedly engaged to row
In the feed slot 20 in the slot type type face 19 of star part side.Because thread lead screw 1 and planetary member 3 are all accurately made, planet
Part 3 rolls on flawless circuit orbit around thread lead screw 3.Annular space between annular element 6 and thread lead screw 1 is with as follows
Mode determines, that is, planetary member 3 is made to have the radial gap of only very little.Therefore, planetary member 3 is forced and is become due to hardening deforming
Become the shape of its circle for the annular element 6 of non-circular shape.
Reference numerals list
1 thread lead screw
2 feed screw nuts
3 planetary members
4 supporting bodies
5 annular elements
6 annular elements
7 receiving portions
8 receiving portions
9 disk springs
10 slot type type faces
11 slot type type faces
12 slots
13 slots
14 teeth
15 teeth
16 trench bottoms
17 crowns
18 guiding grooves
The slot type type face of 19 planetary member sides
20 feed slots
B width
S wall thickness
T slot pitches
daOverall diameter
diInterior diameter
H profiles
Claims (3)
1. a kind of method for manufacturing planetary roller screw gear, the planetary roller screw gear has screw thread
It is leading screw (1), the feed screw nut (2) being arranged in the thread lead screw (1), multiple on the periphery of the feed screw nut (2) point
The planetary member (3) arranged to cloth, wherein the annular element that feed screw nut (2) has supporting body (4) and is arranged in supporting body (4)
(5,6), the annular element are equipped in inner circumference in the slot type type face (19) of the planetary member side for being engaged to planetary member (3)
Nut side slot type type face (10,11), the wall thickness (s) of the annular element (5,6) is less than the slot type type face of the nut side
4 times of the profile (h) of (10,11), and at least its 1.5 times, the method has following steps：There is provided has cylinder
The ring blank of all sides of shape, the slot type type face (10,11) of nut side is rolled onto on the inner periphery of ring blank and then
It is hardened with heat treating process, it will be in annular element (5,6) merging supporting body (4).
2. according to the method described in claim 1, wherein, ring blank is provided by plank by deep-draw, or by cutting
Processing, or provided by pipe is divided into tube section.
3. according to the method described in claim 1, wherein, one annular element (5) is become by being pressed into receiving portion (7)
Shape simultaneously becomes the shape of its circle, and wherein, another annular element (6) passes through the planetary member that will be arranged on leading screw periphery
(3) it sticks on the inner periphery of annular element (6) and deforms and become its shape justified.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012203040.9 | 2012-02-28 | ||
| DE102012203040 | 2012-02-28 | ||
| DE201210204038 DE102012204038A1 (en) | 2012-02-28 | 2012-03-15 | Planetenwälzgewindetrieb |
| DE102012204038.2 | 2012-03-15 | ||
| PCT/EP2013/051269 WO2013127571A1 (en) | 2012-02-28 | 2013-01-24 | Planetary roller screw drive, and method for producing a planetary roller screw drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104145138A CN104145138A (en) | 2014-11-12 |
| CN104145138B true CN104145138B (en) | 2018-08-10 |
Family
ID=48950853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380011459.5A Expired - Fee Related CN104145138B (en) | 2012-02-28 | 2013-01-24 | Method for manufacturing planetary roller screw gear |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104145138B (en) |
| DE (1) | DE102012204038A1 (en) |
| WO (1) | WO2013127571A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032268B (en) * | 2020-08-24 | 2023-11-24 | 江西沃德成科技有限公司 | Roller for planetary roller screw and manufacturing method thereof |
| CN113987717B (en) * | 2021-11-16 | 2024-03-26 | 重庆大学 | Planetary roller screw tolerance optimization design method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR83127E (en) * | 1962-02-21 | 1964-06-19 | Tech Integrale | Device for transforming a rotational movement into a translational movement with very low feed per revolution |
| FR2179289A5 (en) * | 1972-04-05 | 1973-11-16 | Tech Integrale | |
| EP0331761A1 (en) * | 1987-11-10 | 1989-09-13 | Rollvis S.A. | Thread-rolling gear with satellite rollers |
| EP0603067A1 (en) * | 1992-12-17 | 1994-06-22 | AEROSPATIALE Société Nationale Industrielle | Roller-screw-mechanism for a spacecraft and linear actuator comprising such mechanism |
| US6170351B1 (en) * | 1996-11-09 | 2001-01-09 | Ina Walzlager Schaeffler Ohg | Device for converting a rotational movement into an axial movement |
| CN2628807Y (en) * | 2003-07-29 | 2004-07-28 | 西南交通大学 | Planetary roller screw auxiliary |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010011820B4 (en) | 2010-03-18 | 2021-11-11 | Schaeffler Technologies AG & Co. KG | Planetary screw drive |
-
2012
- 2012-03-15 DE DE201210204038 patent/DE102012204038A1/en not_active Withdrawn
-
2013
- 2013-01-24 WO PCT/EP2013/051269 patent/WO2013127571A1/en active Application Filing
- 2013-01-24 CN CN201380011459.5A patent/CN104145138B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR83127E (en) * | 1962-02-21 | 1964-06-19 | Tech Integrale | Device for transforming a rotational movement into a translational movement with very low feed per revolution |
| FR2179289A5 (en) * | 1972-04-05 | 1973-11-16 | Tech Integrale | |
| EP0331761A1 (en) * | 1987-11-10 | 1989-09-13 | Rollvis S.A. | Thread-rolling gear with satellite rollers |
| EP0603067A1 (en) * | 1992-12-17 | 1994-06-22 | AEROSPATIALE Société Nationale Industrielle | Roller-screw-mechanism for a spacecraft and linear actuator comprising such mechanism |
| US6170351B1 (en) * | 1996-11-09 | 2001-01-09 | Ina Walzlager Schaeffler Ohg | Device for converting a rotational movement into an axial movement |
| CN2628807Y (en) * | 2003-07-29 | 2004-07-28 | 西南交通大学 | Planetary roller screw auxiliary |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104145138A (en) | 2014-11-12 |
| DE102012204038A1 (en) | 2013-08-29 |
| WO2013127571A1 (en) | 2013-09-06 |
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: German Herzogenaurach Applicant after: SCHAEFFLER TECHNOLOGIES AG & CO.KG Address before: German Herzogenaurach Applicant before: SCHAEFFLER TECHNOLOGIES GmbH & Co.KG |
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Free format text: CORRECT: APPLICANT; FROM: SCHAEFFLER TECHNOLOGIES GMBH + CO. KG TO: SCHAEFFLER TECHNOLOGY GMBH + CO. KG Free format text: CORRECT: ADDRESS; FROM: |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180810 |