EP4430315A1 - Ensemble pour roulement - Google Patents
Ensemble pour roulementInfo
- Publication number
- EP4430315A1 EP4430315A1 EP22818095.6A EP22818095A EP4430315A1 EP 4430315 A1 EP4430315 A1 EP 4430315A1 EP 22818095 A EP22818095 A EP 22818095A EP 4430315 A1 EP4430315 A1 EP 4430315A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring
- bearing
- assembly according
- assembly
- shaft
- 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.)
- Pending
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
- F16C17/20—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with emergency supports or bearings
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
- F16C19/522—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to load on the bearing, e.g. bearings with load sensors or means to protect the bearing against overload
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/073—Fixing them on the shaft or housing with interposition of an element between shaft and inner race ring
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C39/00—Relieving load on bearings
- F16C39/02—Relieving load on bearings using mechanical means
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
- F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
- F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2202/00—Solid materials defined by their properties
- F16C2202/02—Mechanical properties
- F16C2202/08—Resilience, elasticity, super-elasticity
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/52—Alloys based on nickel, e.g. Inconel
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
- F16C2206/40—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/50—Positive connections
- F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/20—Application independent of particular apparatuses related to type of movement
Definitions
- the present invention relates to bearing assemblies.
- the invention relates to rolling bearings and more particularly to rolling bearings rotating at low speed which are required to undergo extreme occasional loads.
- Rolling bearings are generally used to ensure the precise axial and radial positioning of shafts attached to parts to be oriented or set in slow rotation.
- rolling bearings consist of an internal rolling ring with a rolling track, which may or may not be divided into two half-rings each carrying a half-track; an outer bearing ring having a bearing race, which may or may not be divided into two half-rings each carrying a half-race; rolling elements which may be balls or rollers and possibly one or more rolling element separator devices to ensure the correct circumferential distribution of the latter in the bearing.
- the rolling elements can be balls, cylindrical, conical or barrel rollers.
- Rolling bearings involve Hertzian contact geometries of the ball/raceway type in portions of torus, cylindrical roller/cylindrical raceway, conical roller/conical raceway or barrel roller/spherical and toric raceway. These geometries tend to concentrate the contact forces on very small surfaces.
- rolling bearings are dimensioned to take account of extreme loads, even if these are rare. Numerous rolling bearings are therefore oversized in the vast majority of their life cycle.
- An object of the present invention is to provide an assembly for a bearing that is more resistant to occasional overloads.
- Another object of the present invention is to provide an assembly for a bearing that does not exhibit any hard point or play after an occasional event of extreme loading.
- Another object of the present invention is to provide an assembly for a less expensive bearing.
- the subject of the present invention is a bearing assembly comprising:
- a bearing comprising an inner bearing ring fixed to the shaft, an outer bearing ring fixed to the hub, rolling elements arranged between the inner bearing ring and the outer bearing ring,
- the protection device suitable for protecting the bearing against overloads, the protection device comprising at least a first ring and a second ring carried by at least one support among the shaft and the hub, the first ring being arranged at a distance of the second ring, when the bearing assembly undergoes a load lower than a threshold load; at least a part of the first ring being in contact with at least a part of the second ring, when the rolling assembly undergoes a load greater than said threshold load.
- the invention makes it possible to limit oversizing or damage to the slewing or thrust bearing due to the extreme loads seen during rare events in the life cycle of the bearing.
- the characteristics exposed in the following paragraphs can, optionally, be implemented. They can be implemented independently of each other or in combination with each other:
- the first ring comprises an inner ring fixed to the shaft, the second ring comprising an intermediate ring, and in which the assembly further comprises an outer ring carried by the hub, the intermediate ring being disposed between and at a distance from the inner ring and of the outer ring, when the bearing assembly undergoes a load lower than the threshold load; the intermediate ring being in contact with at least a part of at least one ring among the inner ring and the outer ring when the bearing assembly undergoes a load greater than said threshold load.
- the inner bearing ring, the outer bearing ring and the rolling elements are made of a first material having a first stiffness
- the inner ring, the outer ring and the intermediate ring are made of a second material different from the first material , the second material having a second stiffness greater than the first stiffness of the first material at least in the radial direction, the radial direction being perpendicular to the axial direction.
- the first stiffness of the first material allows the deformation of the rolling elements and/or of at least one ring among the inner rolling ring and the outer rolling ring, in their elastic deformation range at least until at least one part of the intermediate ring is in contact with one of the inner ring and the outer ring.
- the intermediate ring has at least one circular face in the shape of a truncated cone, and in which the inner ring and the outer ring have a bearing face facing the intermediate ring, said bearing face having a shape complementary to the shape of the intermediate ring.
- the intermediate ring is made up of several ring segments in the shape of an arc of a circle separated from each other by interstices.
- springs or inserts made of an elastic material maintain a regular gap between these segments.
- the assembly comprises at least one support suitable for carrying the intermediate ring, the support being fixed to one of the shaft and the hub, and an elastic element suitable for acting between the support and the intermediate ring, the element elastic being configured to maintain the intermediate ring at a position defined in the axial direction.
- the support and the elastic element make it possible to maintain the play between the intermediate ring and the inner ring and the play between the intermediate ring and the outer ring.
- the intermediate ring has rounded edges, for example, edges having the shape of a logarithmic profile or a clothoic profile.
- the intermediate ring comprises at least one groove located on at least one face among a face facing the inner ring and a face facing the outer ring, the groove extending in a plane perpendicular to the axial direction.
- the groove comprises a third material having a third stiffness less than the second stiffness of the second material, said third material being for example polytetrafluoroethylene.
- the throat has a leaf spring.
- the inner bearing ring, the outer bearing ring and the rolling elements are made of a superelastic alloy, and wherein the inner ring, the outer ring and the intermediate ring are made of one of steel and ceramic material.
- the inner bearing ring, the outer bearing ring and the rolling elements are made of steel and the inner ring, the outer ring and the intermediate ring are made of ceramic.
- the inner bearing ring and respectively the outer bearing ring of the bearing are contiguous in the axial direction to the inner ring and respectively to the outer ring of the protection device.
- the support comprises a nut provided with a flange extending cantilevered between the shaft and the hub, the nut being able to fix a ring among the outer ring and the inner ring in abutment against a bearing ring among the outer bearing race and the inner bearing race.
- FIG. 1 is a sectional view of an example of a bearing assembly according to a first embodiment of the invention, the section being made in a plane radial to the axis of rotation of the bearing.
- FIG. 2 is a perspective view of an intermediate ring.
- FIG. 3 is a sectional view of a second example of a bearing assembly according to the first embodiment, the section being made in a plane radial to the axis of rotation of the bearing.
- FIG. 4 is a sectional view of a bearing assembly according to a second embodiment of the invention, the section being made in a plane radial to the axis of rotation of the bearing.
- the bearing assembly 2 comprises a shaft 4 having an axis of rotation X-X extending in an axial direction A, a hub 6 arranged around the shaft, a bearing 8 mounted between the shaft and the hub.
- the bearing 8 comprises an outer bearing ring 10 tight against the hub, an inner bearing ring 12 tight against the shaft, rolling elements 14 arranged between the outer bearing ring and the inner bearing ring.
- the outer bearing ring 10 abuts against a shoulder 16 provided in the hub.
- the inner bearing ring 12 abuts against a shoulder 18 provided in the shaft.
- the outer bearing ring and the inner bearing ring are positioned offset in the axial direction A by a distance depending on the size of the rolling elements and the desired axial positioning of the shaft relative to the hub.
- the outer bearing ring 10, the inner bearing ring 12 and the rolling elements 14 are made of a first material having a stiffness R1.
- This stiffness R1 allows the deformation of the rolling elements 14 and/or the deformation of the outer bearing ring 10 or of the inner bearing ring 12 in their elastic deformation range at least until at least part of the ring intermediate 28 either in contact with the inner ring 26 or the outer ring 24.
- the outer ring 24, the inner ring 26 and the intermediate ring 28 are made of a second material having a stiffness R2 greater than the stiffness R1 of the first material at least along the radial direction R.
- the radial direction R is perpendicular to the axial direction A.
- the outer bearing ring 10, the inner bearing ring 12 and the rolling elements 14 are for example made of a super-elastic alloy such as for example an alloy of nickel and titanium (N i 14Ti 11), and the assembly outer ring 24, inner ring 26 and intermediate ring 28 are made of steel or ceramic.
- a super-elastic alloy such as for example an alloy of nickel and titanium (N i 14Ti 11)
- the assembly outer ring 24, inner ring 26 and intermediate ring 28 are made of steel or ceramic.
- the outer bearing ring 10, the inner bearing ring 12 and the rolling elements 14 are for example made of steel, and the outer ring 24, inner ring 26 and intermediate ring 28 assembly are made of ceramic.
- the two circular faces 34, 36 of the intermediate ring have a frustoconical shape.
- only the inner circular face 36 of the intermediate ring has a frustoconical shape.
- the intermediate ring 28 consists of several ring segments 38 in the shape of an arc of a circle separated by air gaps 40.
- springs or inserts made of an elastic material maintain a regular gap between these segments.
- this segmentation makes it possible to avoid jamming of the intermediate ring between the inner ring and the outer ring.
- the intermediate ring 28 can be replaced by a honeycombed annular reinforcement maintaining a series of short blocks of section similar to the segments 38 of figure 2.
- the intermediate ring 28 comprises edges 42 stripped and rounded according to a profile designed to limit excess pressure at the edges.
- the edges 42 have, for example, the shape of a logarithmic profile or of a clothoid profile.
- the intermediate ring 28 comprises at least one groove 44 formed on at least one face among the outer circular face 34 and the inner circular face 36.
- two grooves 44 are formed on the outer circular face 34 and two grooves 44 are formed on the inner circular face 36. These grooves extend in a plane perpendicular to the axial direction A.
- a groove is arranged in the upper part and another groove is arranged in the lower part of each circular face 34, 36 of the intermediate ring. These grooves prevent the intermediate ring from jamming against the inner ring 26 or against the outer ring 24.
- the grooves 44 contain a material having a lower stiffness than the material used for manufacturing the intermediate ring.
- grooves 44 contain polytetrafluoroethylene. This material also prevents jamming of the intermediate ring against the inner ring 26 or against the outer ring 24.
- the grooves 44 include leaf springs.
- the bearing assembly 2 further comprises a support 48 carrying the intermediate ring 28 and an elastic element 50 fixed between the support and the intermediate ring.
- the elastic element is configured to hold the intermediate ring in a position defined in the axial direction A so that the intermediate ring is disposed at a distance from the inner ring 26 and from the outer ring 24.
- a clearance 46 is provided between , on the one hand, the intermediate ring 28 and the inner ring 26, and on the other hand, the intermediate ring 28 and the outer ring 24.
- Bracket 48 is attached to the shaft or hub.
- the support 48 is for example constituted by a nut provided with a flange 52 extending cantilevered between the shaft and the hub.
- the internal nut 22 is provided with the flange.
- the inner nut 22 thus carries each ring segment 38.
- the inner nut 22 ensures both the fixing of the inner ring and the inner bearing race, and the support function for the collar.
- collar 52 is integral with external nut 21.
- an element different from the internal nut or from the external nut performs the function of fixing the collar to the shaft or to the hub.
- the elastic element 50 is for example constituted by a spring.
- intermediate ring 28 In operation, when a load less than a threshold load is applied to assembly 2, intermediate ring 28 is disposed between and at a distance from inner ring 26 and outer ring 24. There is then a clearance 46 between the intermediate ring and the inner ring, and a clearance 46 between the intermediate ring and the inner ring, as shown in FIG. As the load applied to assembly 2 increases, the rolling elements 14 or inner bearing rings and external deform in their elastic deformation range to support the load that is applied to the assembly.
- the intermediate ring 28 comes into contact with at least a part of the inner ring 26 and/or of the outer ring 24.
- the protection device 20 then supports the load applied to the assembly 2.
- the inner ring 26 and the intermediate ring 28 are made of a material having a stiffness greater than the stiffness of the outer ring 10, the inner ring 12 and the rolling elements 14, they better support the overload that is applied to them punctually.
- FIG. 3 represents a bearing assembly according to the invention in which the bearing comprises rolling elements of the conical roller type instead of the spherical rolling elements 14 represented in FIG.
- FIG. 4 illustrates a bearing assembly 52 according to a second embodiment.
- This bearing assembly 52 is similar to bearing assembly 2 according to the first embodiment. It will not be described in detail.
- the technical elements of the second embodiment similar or identical to the technical elements of the first embodiment are designated by the same references and will not be described a second time.
- the protection device 200 illustrated in FIG. 4 comprises a first ring 54 tight against the hub 6 and in abutment against the shoulder 16, and a second ring 56 tight against the shaft 4 and in abutment against the shoulder 18.
- the first ring 54 has a bearing face 58 facing a bearing face 60 of the second ring.
- a clearance 46 is arranged between the bearing face 58 of the first and the bearing face 60 of the second ring.
- At least one bearing face by the bearing faces 58 and 60 is arranged obliquely with respect to a cylinder along the axis XX.
- the bearing face 58 of the first ring 54 is placed at a distance from the bearing face 60 of the second ring, when the rolling assembly undergoes a load lower than a threshold load. With such a load, the clearance 46 is present between the bearing face 58 of the first ring 54 and the bearing face 60 of the second ring. And, at least a part of the first ring 54 is in contact with at least a part of the second ring 56, when the bearing assembly 52 undergoes a load greater than said threshold load.
- the geometry of the overload protection device 200 can be oriented to limit axial overloads.
- the assembly according to the invention makes it possible to combine the advantages of a rolling bearing and the advantages of a slide bearing, the first ensuring performance in normal operation while remaining flexible enough to deform without damage up to contacting the second, stiffer and resistant to overload.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2111878A FR3128977B1 (fr) | 2021-11-09 | 2021-11-09 | Ensemble pour roulement |
| PCT/FR2022/000097 WO2023084160A1 (fr) | 2021-11-09 | 2022-11-08 | Ensemble pour roulement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4430315A1 true EP4430315A1 (fr) | 2024-09-18 |
Family
ID=79019052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22818095.6A Pending EP4430315A1 (fr) | 2021-11-09 | 2022-11-08 | Ensemble pour roulement |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4430315A1 (fr) |
| CN (1) | CN118202163A (fr) |
| FR (1) | FR3128977B1 (fr) |
| WO (1) | WO2023084160A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001027231A (ja) * | 1999-07-15 | 2001-01-30 | Minebea Co Ltd | フラットモータの軸受構造 |
| DE10256086A1 (de) * | 2002-11-29 | 2004-06-17 | Leybold Vakuum Gmbh | Kugellager und mit einem Lager dieser Art ausgerüstete Vakuumpumpe |
| JP6144287B2 (ja) * | 2013-02-05 | 2017-06-07 | 三菱重工業株式会社 | 風力発電装置 |
-
2021
- 2021-11-09 FR FR2111878A patent/FR3128977B1/fr active Active
-
2022
- 2022-11-08 CN CN202280074328.0A patent/CN118202163A/zh active Pending
- 2022-11-08 WO PCT/FR2022/000097 patent/WO2023084160A1/fr not_active Ceased
- 2022-11-08 EP EP22818095.6A patent/EP4430315A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN118202163A (zh) | 2024-06-14 |
| WO2023084160A1 (fr) | 2023-05-19 |
| FR3128977A1 (fr) | 2023-05-12 |
| FR3128977B1 (fr) | 2023-11-24 |
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