EP4587361A1 - Fahrkorbanordnung für einen doppelstockaufzug - Google Patents
Fahrkorbanordnung für einen doppelstockaufzugInfo
- Publication number
- EP4587361A1 EP4587361A1 EP23764941.3A EP23764941A EP4587361A1 EP 4587361 A1 EP4587361 A1 EP 4587361A1 EP 23764941 A EP23764941 A EP 23764941A EP 4587361 A1 EP4587361 A1 EP 4587361A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- absorber
- vibration
- car
- spring
- mass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/026—Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
- B66B11/0266—Passive systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0206—Car frames
- B66B11/0213—Car frames for multi-deck cars
- B66B11/022—Car frames for multi-deck cars with changeable inter-deck distances
Definitions
- the present invention relates to a car arrangement for a double-decker elevator.
- the invention further relates to a double-decker elevator, a method for tuning a vibration absorber of a car arrangement for a double-decker elevator and a control unit for carrying out this method.
- a double-decker elevator is basically characterized by a car frame in which two cars or elevator cars are arranged one above the other. By moving the car frame with the cars arranged therein, the cars can be moved together and thus stop at two floors one above the other at the same time.
- double-decker elevators are often equipped with an adjustment mechanism with which a vertical distance between the two cars can be adjusted, for example automatically during the journey to the next stop.
- the adjustment mechanism can include, for example, an electric spindle drive.
- an electric spindle drive When vertically adjusting one or both of the cars using such a drive, in certain situations, for example at certain speeds of the drive, undesirable vibrations of the entire car arrangement or parts thereof, in particular the car frame and/or the driven car, can occur manifest themselves in vibrations and/or noise and can therefore reduce driving comfort.
- EP 1 074 503 Bl shows an example of a double-deck elevator with two spindle drives for the vertical adjustment of two cars within a car frame.
- EP 3 176 121 B1 describes a car arrangement consisting of a car and a car frame, which is connected to the car via a damper.
- the damper serves to dampen vibrations that are transmitted via guide rails to the car frame and from there to the car during operation of the elevator.
- the first end of the damper is on a floor of the car and attached to the car frame with its second end.
- the two ends are connected to one another via a damping element, for example made of rubber.
- a first aspect of the invention relates to a car arrangement for a double-decker elevator.
- the car assembly includes: a car frame slidably storable in a shaft between multiple floors; two cars, which are connected to the car frame in such a way that they can be moved together with the car frame, and - if the car frame is slidably mounted in the shaft between the floors - are arranged one above the other, with a distance between the cars arranged one above the other by moving the cars can be adjusted relative to one another by means of an actuator; a vibration absorber which comprises an absorber mass and an elongated absorber spring, the absorber mass being connected to a free end of the absorber spring and the absorber spring being connected at its other end to a vibration-prone component of the car arrangement, the absorber mass and the absorber spring being coordinated with one another, that the vibration absorber is set into desired vibrations during operation of the actuator, which counteract undesirable vibrations of the component susceptible to vibration, ie weaken or eliminate them.
- the car frame can
- the car frame can be viewed as a frame-like frame made up of several supports and/or support structures.
- the car frame in the operational state, can be guided via guide shoes and/or rollers along at least one guide rail anchored in the shaft.
- the car frame can be constructed, for example, from two (horizontal) cross beams and two (vertical) longitudinal beams, which are connected via the cross beams to form a frame.
- the car frame can also have three (horizontal) cross members.
- the cars can be arranged one above the other within this frame. For example, each longitudinal beam can be guided on a guide rail.
- the two cars can be moved together in the shaft by moving the car frame along the guide rail(s) and thus stop at two floors (directly) one above the other at the same time.
- the actuator for example in the form of one or more spindle, chain or rack drives, it is possible to adapt the vertical distance between the cars to the vertical distance between two floors (directly) one above the other on which the cars are supposed to stop at the same time.
- both cars can be moved relative to the car frame by means of the actuator, while the other car is firmly connected to the car frame.
- both cars can be moved relative to the car frame by means of the actuator or by means of several actuators.
- the actuator can, for example, comprise an electric drive motor and a gearbox that couples a drive shaft of the drive motor to a spindle.
- the spindle can be rotatably mounted in a spindle nut, wherein the spindle nut can be attached in a suitable manner to one of the cars arranged one above the other, for example to the lower car.
- rotating the spindle causes a position of the spindle nut to change in relation to a longitudinal direction of the spindle. This also changes the distance between the cars arranged one above the other.
- the actuator can additionally include a braking system, in particular a redundant braking system using spring-applied brakes.
- a “vibration damper” can be understood as a pendulum-like vibration damper clamped on one side.
- the absorber mass and the absorber spring form a mass-spring system with a specific natural frequency, which is coordinated with the resonance frequencies of the vibration-prone component(s) to which (or to which) it is attached, so that undesirable vibrations of these component(s). ) are extinguished or weakened by (desired) oscillations of the mass-spring system according to its natural frequency.
- the term "spring” can encompass various types of elastically deformable bodies.
- the absorber spring can be formed from at least one elastically deformable material, for example spring steel or from various metallic and/or non-metallic elastically deformable materials, and/or with a geometry that promotes the elastic deformation of the absorber spring.
- the absorber spring can also be designed with a spiral spring or a helical spring.
- Such a vibration absorber especially if it is designed as a passive damper, can have a very simple structure and can be easily assembled or dismantled. In addition, such a vibration absorber is very robust and, in contrast to rubber dampers, practically maintenance-free.
- the vibration absorber can have a fixed natural frequency or several fixed natural frequencies.
- An embodiment of the vibration absorber is also possible that enables its natural frequency(s) to be changed, for example using a separate servomotor that is designed to change the position of the absorber mass relative to the absorber spring (see also below).
- the vibration absorber should be placed as close as possible to the center of gravity of the component susceptible to vibration.
- the vibration absorber can, for example, be mounted hanging, standing or lying down.
- the vibration absorber more precisely the connected end of the absorber spring, can also be connected to several vibration-prone components of the car arrangement at the same time.
- the car arrangement can also include two or more than two, for example four, six or eight vibration absorbers, which can be connected to the same vibration-prone component and/or to different vibration-prone components. It is possible for the absorber springs of different vibration absorbers to protrude from the component that is susceptible to vibration in different, for example opposite, directions. For example, one of the absorber springs can protrude upwards so that the respective absorber mass stands on the absorber spring, whereas another of the absorber springs can protrude downwards so that the respective absorber mass hangs on the absorber spring. Alternatively, the absorber springs can protrude in different horizontal directions in a corresponding manner.
- a second aspect of the invention relates to a preferably computer-implemented method for tuning a vibration absorber of a car arrangement for a double-decker elevator.
- the car arrangement can be the car arrangement according to an embodiment of the first aspect of the invention described above or below, in which the absorber mass is movable between different longitudinal positions in the longitudinal direction of the absorber spring and the vibration absorber further comprises a servomotor for adjusting the absorber mass between the longitudinal positions.
- the method includes: receiving vibration data indicating current frequencies of the unwanted vibrations; Determining a selected longitudinal position from the various longitudinal positions between which the absorber mass is movable in the longitudinal direction of the absorber spring, the vibration absorber having a natural frequency tuned to the current frequencies when the absorber mass is in the selected longitudinal position; Generate a control command to control the servomotor so that the absorber mass is adjusted to the selected longitudinal position.
- the process enables the natural frequency(s) of the vibration absorber to be automatically adjusted to different environmental conditions. This allows unwanted vibrations to be attenuated under different environmental conditions.
- the vibration data may have been generated using a suitable sensor, for example using an inertial sensor for measuring an acceleration and/or rotation rate of the vibration-prone component with respect to one or more, preferably three, spatial axes.
- a computer program can be stored in the memory of the control unit, which includes instructions that cause a processor of the control unit to carry out the method described above and below when the computer program is executed by the processor.
- a lookup table can also be stored in the memory of the control unit, which assigns different longitudinal positions of the absorber mass to different resonance frequency ranges of the vibration-prone component.
- Each longitudinal position can correspond to a specific natural frequency range of the vibration absorber, which is suitably matched to the respective resonance frequency range in order to enable the undesirable vibrations of the vibration-prone component to be weakened or even completely eliminated by corresponding counter-oscillations of the vibration absorber.
- the natural frequency range and the resonance frequency range can at least partially include the same frequencies.
- a third aspect of the invention relates to a control unit with a processor configured to carry out the method described above and below.
- the control unit can include hardware and/or software modules.
- the control unit may include a memory and data communication interfaces for wireless and/or wired data communication with peripheral devices.
- the control unit can, for example, be a hardware and/or software component of a higher-level elevator control.
- the control unit can be a hardware component of the car arrangement. If the double-decker elevator includes several car arrangements, each car arrangement can, for example, include such a control unit as its own hardware component.
- a fourth aspect of the invention relates to a double-deck elevator.
- the double-decker elevator includes: a shaft; the car arrangement described above and below, the car frame being mounted so that it can move between several floors in the shaft.
- Embodiments of the invention may be considered based on the ideas and findings described below, without limiting the invention.
- the vibration-prone component can be a first one of the elevator cars.
- unwanted vibrations of the actuator and/or the car frame can be transmitted to one of the cars, in particular to the car driven by the actuator.
- the vibration absorber By mechanically coupling the vibration absorber to the car in question, these vibrations can be eliminated can be dampened particularly effectively. This means that annoying vibrations and/or annoying noises from the car can be avoided, which improves driving comfort.
- the absorber spring can be connected at its other end to a floor structure of the first car.
- the vibration absorber can be placed as close as possible to the center of gravity of the first car. This improves vibration damping compared to designs in which the vibration absorber is placed further away from the center of gravity, for example on a ceiling structure or side wall of the first car.
- the floor structure can be a load-bearing structure. The floor structure can therefore carry a large part of the weight of the first car (for example, a cabin of the first car can rest on the floor structure).
- the first car can be a lower one of the cars arranged one above the other and/or mechanically coupled to the actuator, i.e. H. can be moved relative to the car frame by means of the actuator.
- the first and/or lower car can, for example, be mechanically coupled to the actuator via its floor structure.
- the component susceptible to vibration can be the car frame or the actuator.
- the vibration absorber may make sense for the vibration absorber to be attached to a component other than one of the elevator cars.
- the car frame or the actuator is particularly suitable for this, since a significant portion of the unwanted vibrations are usually transmitted from these components to other components of the car arrangement.
- the actuator can be attached to the car frame and, depending on its speed, oscillate at an excitation frequency that stimulates the car frame (and possibly one or each of the cars connected to it) to oscillate in an undesirable manner. This can be avoided by attaching the vibration absorber to the actuator itself or to the car frame.
- the component susceptible to vibration can be a longitudinal member of the car frame.
- the absorber spring can be attached to the longitudinal beam at its other end directly or indirectly, for example via an arm protruding from the longitudinal beam.
- the longitudinal beam can, for example, have one or more car guide rails for guiding one or both cars when moving by means of the actuator.
- the car frame includes a guide section for guiding the car frame along at least one guide rail anchored in the shaft during (vertical) displacement between the floors.
- the absorber spring can be connected to the guide section at its other end.
- the guide section can, for example, be formed by one or more, preferably two, vertical longitudinal beams, which can be coupled to the guide rail (or guide rails) in the operational state of the car arrangement, for example via guide shoes and / or rollers.
- unwanted vibrations can also be transmitted from the guide rail (or guide rails) via the guide section to the car frame and from there to one or each of the cars. The transmission of these additional vibrations via the car frame can be effectively prevented if the vibration absorber is attached to the guide section itself.
- the absorber mass can be movable between different longitudinal positions in the longitudinal direction of the absorber spring.
- the vibration absorber can also include a servomotor for adjusting the absorber mass between the longitudinal positions.
- the servomotor can be designed to move the absorber mass and the absorber spring relative to one another in the longitudinal direction of the absorber spring.
- the servomotor can be electrically controlled by a control unit of the double-decker elevator.
- the servomotor can be designed as an electric, hydraulic or pneumatic drive or a combination of at least two of these examples. This enables a simple automatic adjustment of the natural frequency(s) of the vibration absorber to changes in the frequencies of the unwanted vibrations, for example when the speed of the actuator for moving the elevator cars changes.
- the absorber spring can comprise a tubular section.
- the free end and the other end of the absorber spring can be ends of the be tubular section.
- the absorber spring can be formed by a single tube.
- the absorber mass can be formed by a body with an opening for the absorber spring to pass through, for example in the form of a tube.
- An inner contour of the opening can be adapted to an outer contour of the absorber spring in such a way that the body and the absorber spring can be displaced relative to one another in the longitudinal direction of the absorber spring with sufficient accuracy. This enables a simple and precise adjustment of the longitudinal position of the absorber mass (see also above).
- the body can, for example, be cylindrical or disc-shaped and/or made in one or more pieces.
- the body can be formed by a stack of several disks with central openings. This allows the weight of the absorber mass to be easily adjusted by adding or removing individual discs.
- such a rotationally symmetrical design of the body causes the vibration absorber to behave the same or similar when swinging in different directions of vibration.
- the free end of the absorber spring can protrude vertically or horizontally from the vibration-prone component if the car frame is mounted so that it can move in the shaft between the floors.
- the free end can protrude downwards or upwards, for example from the floor structure of one of the elevator cars, with the absorber mass hanging on the absorber spring in the first case and standing on the absorber spring in the second case.
- the absorber spring here therefore has a substantially vertical longitudinal direction.
- the free end can protrude to the left or right, for example towards the center of the floor structure or away from it.
- the absorber spring here therefore has a substantially horizontal longitudinal direction.
- the car arrangement can further comprise: a further vibration absorber, which comprises an absorber mass and an elongated absorber spring, the absorber mass being connected to a free end of the absorber spring and the absorber spring being connected at its other end to a vibration-prone component of the car arrangement, wherein the absorber mass and the absorber spring are coordinated with one another in such a way that the additional vibration absorber during operation of the Actuator is set into desired vibrations, which counteract unwanted vibrations of the vibration-prone component, ie weaken or eliminate them.
- a further vibration absorber which comprises an absorber mass and an elongated absorber spring, the absorber mass being connected to a free end of the absorber spring and the absorber spring being connected at its other end to a vibration-prone component of the car arrangement, wherein the absorber mass and the absorber spring are coordinated with one another in such a way that the additional vibration absorber during operation of the Actuator is set into desired vibrations, which counteract unwanted vibrations of the vibration-prone component, ie weaken
- the vibration absorber and the further vibration absorber can preferably be designed to be identical in construction.
- the car arrangement can also include two or more than two further vibration absorbers.
- the vibration absorber and the further vibration absorber can be attached to different points on the same vibration-prone component.
- the various vibration absorbers can be arranged evenly distributed around the center of gravity of the same vibration-prone component.
- the various vibration absorbers can be connected to various components of the car arrangement that are susceptible to vibration.
- the different absorber springs can, for example, lie in the same horizontal or vertical plane. Additionally or alternatively, the longitudinal axes of the absorber springs can be aligned parallel to one another. A collinear arrangement of the longitudinal axes of the absorber springs is also possible.
- the various absorber springs can protrude from the respective component (or components) in opposite directions.
- the double-decker elevator can also have the control unit described above and below and a device for determining the current frequencies of the unwanted vibrations of the vibration-prone ones Component of the car assembly include. This enables the vibration absorber of the car arrangement to be automatically adapted to different environmental conditions.
- Fig. 1 shows a double-decker elevator according to an embodiment of the invention.
- Fig. 2 shows a side view of a car frame of a car arrangement according to an embodiment of the invention.
- Fig. 1 shows components of a double-decker elevator 1.
- the double-decker elevator 1 comprises a car arrangement 2 consisting of a first car 3, a second car 4 and a car frame 5, which is mounted in a shaft 6 between several floors of a building so that it can move in the direction of a vertical axis z is.
- Vertical guide rails 7 can be anchored in the shaft 6, which move the car frame 5 in the z direction on one side or, as here, on both sides.
- the cars 3, 4 are arranged one above the other in the car frame 5 and separated from one another by a vertical distance A.
- the first car 3 is a lower one of the two cars 3, 4.
- the two cars 3, 4 can be moved together and thus simultaneously on two adjacent ones, i.e. H. hold floors directly on top of each other.
- the floor heights can vary within the building. For example, a vertical distance between two adjacent floors may decrease as the height of the building increases, which may be particularly the case in high-rise buildings.
- the vertical one Distance A between the two cars 3, 4 should therefore be able to be adjusted accordingly.
- the lower, first car 3 is mounted on the car frame 5 so that it can be moved in the z direction.
- the second car 4, however, is firmly connected to the car frame 5.
- the vertical adjustment of the first car 3 can be carried out, for example, by means of two (identical) spindle drives 8 as actuators, each of which has a spindle 9 and a drive unit 10 for driving, i.e. H. motorized rotation of the spindle 9.
- Each drive unit 10 can, for example, include an electric drive motor, a gearbox coupling the drive motor to the respective spindle 9 and spring-applied brakes.
- On each spindle 9 sits a spindle nut 11, which is connected here to a supporting floor structure 12 of the first car 3.
- the spindle nuts 11 are moved in the longitudinal direction of the spindles 9, i.e. H.
- the car arrangement 2 in this example further comprises a first vibration absorber 13 and a second vibration absorber 14, which here - similar to a pendulum - are attached to the floor structure 12, hanging downwards.
- the first vibration absorber 13 is attached to the left of the floor structure 12 and the second vibration absorber 14 is attached to the rear on the right.
- the two vibration absorbers 13, 14 are diagonally opposite each other and are therefore evenly distributed around a center of gravity of the lower car 3, which is beneficial to the effectiveness of the vibration damping.
- the vibration absorbers 13, 14 can also be attached standing or lying and/or in mutually different orientations to the floor structure 12 or another component that is susceptible to vibration, such as the car frame 5 (see Fig. 2).
- the car arrangement 2 can also include only one vibration absorber or more than two, for example at least four, at least six or at least eight vibration absorbers.
- Each vibration absorber 13, 14 is formed by an elongated absorber spring 15, for example a simple tube, with a defined rigidity and by an absorber mass 16 with a defined weight.
- the absorber mass 16 sits on a free end of the absorber spring 15, while the other end of the absorber spring 15 is attached to the base structure 12, for example screwed or welded to it.
- the absorber mass 16 can in particular be formed by a one-piece or multi-piece cylindrical body.
- Each vibration absorber 13, 14 is coordinated, more precisely the absorber spring 15 and the absorber mass 16 of each vibration absorber 13, 14 are coordinated with one another in such a way that when the spindle drives 8 are operated, i.e. that is, when the electric motors of the drive units 10 rotate the spindles 9 at a certain speed, oscillate with a certain natural frequency or with natural frequencies in a certain frequency range.
- These desired vibrations of the vibration absorbers 13, 14 interact with the unwanted vibrations in such a way that the unwanted vibrations are noticeably attenuated, at least in such a way that no disturbing vibrations and/or no disturbing noises can be perceived anymore.
- the respective absorber mass 16 can be mounted, for example, in different longitudinal positions in the longitudinal direction of the respective absorber spring 15, here in the z direction.
- the absorber mass 16 is mounted on the absorber spring 15 so that it can be moved between the longitudinal positions.
- the absorber mass 16 can be adjustable between the longitudinal positions, for example using an electric servomotor 17 (see FIG. 2). This enables automatic tuning of the vibration absorbers 13, 14.
- vibration sensor 18 for example an inertial sensor arranged on the floor structure 12 or directly on the first car 3.
- the vibration data 19 generated in the process are received by a control unit 20, which evaluates the vibration data 19 in order to determine a suitable longitudinal position for each absorber mass 16, and generates a corresponding control command 21 for each servomotor 17, which causes it to move the respective absorber mass 16 into the to adjust the respective longitudinal position.
- the vibration absorbers 13, 14 then generate desired vibrations that counteract the unwanted vibrations in accordance with the current frequencies.
- Fig. 2 shows an alternative arrangement of the vibration absorbers 13, 14 on the car frame 5, more precisely on a lateral guide section 22 of the car frame 5, which is formed here by two parallel longitudinal beams 23 of the car frame 5.
- the first car 3 can be mounted on one or both of the longitudinal beams 23 so as to be displaceable in the z direction via one or more car guide rails (not shown).
- the car frame 5 can have such a guide section 22 on each of two opposite sides.
- One of the vibration absorbers 13, 14 is attached to each longitudinal member 23 via its respective absorber spring 15.
- the first vibration absorber 13 is mounted hanging, whereas the second vibration absorber 14 is mounted standing.
- Each vibration absorber 13, 14 is attached via its respective cancellation spring 15 to one of two arms 24, which each protrude from one of the longitudinal beams 23 and are attached to the respective longitudinal beam 23 via a fastening device 25.
- the fastening device 25 can be formed, for example, by screwing and/or welding.
- the boom 24 of the second vibration absorber 14 also includes a bearing device 26 (see also FIG. 1), which rotatably supports an upper end of the spindle 9.
- the second vibration absorber 14 and the spindle 9 can, as here, be arranged on opposite sides of the boom 24.
- the cantilevers 24 can be arranged essentially at the same height when viewed in the z direction. However, the arms 24 can also have positions that differ from one another in the z direction.
- At least one vibration absorber 13, 14 can be attached to at least one of the spindle drives 18, for example to the drive unit 10.
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22195749 | 2022-09-15 | ||
| PCT/EP2023/074217 WO2024056436A1 (de) | 2022-09-15 | 2023-09-05 | Fahrkorbanordnung für einen doppelstockaufzug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4587361A1 true EP4587361A1 (de) | 2025-07-23 |
| EP4587361B1 EP4587361B1 (de) | 2026-04-22 |
Family
ID=83355427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23764941.3A Active EP4587361B1 (de) | 2022-09-15 | 2023-09-05 | Fahrkorbanordnung für einen doppelstockaufzug |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4587361B1 (de) |
| CN (1) | CN119816464A (de) |
| AU (1) | AU2023343630A1 (de) |
| WO (1) | WO2024056436A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118327343B (zh) * | 2024-06-12 | 2024-08-23 | 北京工业大学 | 一种老旧住宅的加装电梯 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000344448A (ja) | 1999-06-07 | 2000-12-12 | Toshiba Corp | ダブルデッキエレベーター装置 |
| JP4107858B2 (ja) * | 2002-03-22 | 2008-06-25 | 東芝エレベータ株式会社 | ダブルデッキエレベータ |
| CN103420252A (zh) * | 2012-05-20 | 2013-12-04 | 浙江快奥电梯有限公司 | 一种带缓冲的乘客电梯 |
| US10005641B2 (en) * | 2014-06-17 | 2018-06-26 | Thyssenkrupp Elevator Corporation | Elevator dampener and energy harvesting device and method |
| EP3176121B1 (de) | 2015-12-02 | 2018-08-08 | KONE Corporation | Aufzugskabinenanordnung und verfahren zur dämpfung von schwingungen |
| WO2021175491A1 (de) * | 2020-03-03 | 2021-09-10 | Fm Energie Gmbh & Co.Kg | Frequenzadaptiver blattfeder-schwingungstilger |
-
2023
- 2023-09-05 CN CN202380065971.1A patent/CN119816464A/zh active Pending
- 2023-09-05 WO PCT/EP2023/074217 patent/WO2024056436A1/de not_active Ceased
- 2023-09-05 AU AU2023343630A patent/AU2023343630A1/en active Pending
- 2023-09-05 EP EP23764941.3A patent/EP4587361B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024056436A1 (de) | 2024-03-21 |
| CN119816464A (zh) | 2025-04-11 |
| AU2023343630A1 (en) | 2025-03-13 |
| EP4587361B1 (de) | 2026-04-22 |
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