WO2024160643A1 - Druckentlastungseinrichtung und gehäuse - Google Patents
Druckentlastungseinrichtung und gehäuse Download PDFInfo
- Publication number
- WO2024160643A1 WO2024160643A1 PCT/EP2024/051761 EP2024051761W WO2024160643A1 WO 2024160643 A1 WO2024160643 A1 WO 2024160643A1 EP 2024051761 W EP2024051761 W EP 2024051761W WO 2024160643 A1 WO2024160643 A1 WO 2024160643A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- closing element
- cover
- pressure relief
- relief device
- housing
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/394—Gas-pervious parts or elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a pressure relief device for opening a relief opening in a housing, in particular a battery storage housing, and to a housing, in particular a battery storage housing, for accommodating one or more battery modules.
- the present invention is based on the object of providing a pressure relief device which provides a safe mode of operation and has a simple structural design.
- a pressure relief device for opening a relief opening in a housing, in particular a battery storage housing, comprising a base body which can be arranged in the relief opening and which has a passage which connects an inlet and an outlet for the flow of a medium, a closing element which, when a defined activation pressure is exceeded, can be transferred from a closed position in which the closing element closes the passage to an open position in which the closing element opens the passage, and a cover which covers the closing element and/or the passage at least in part and which carries out an adjusting movement with the closing element to open the passage.
- batteries that are housed in a battery storage housing can overheat and degas if there is a defect, such as a short circuit, or if the ambient temperature is too high. This can release large quantities of gases that must be removed from the housing.
- the pressure relief device can allow the medium, in particular a gas, to escape from an interior of the housing when the defined activation pressure is exceeded, i.e. when there is an excess pressure in the interior of the housing, for example a so-called bursting pressure.
- the closing element is moved from the closed position to the open position by an adjusting movement due to a gas pressure in the interior of the housing which exceeds the defined activation pressure, thereby releasing the passage.
- the passage is opened by the adjusting movement of the closing element from the closed position to the open position in such a way that the medium flows through the passage via the inlet and flows out of the outlet.
- the medium can also flow through the pressure relief device in the opposite direction.
- the cover which covers the closing element and/or the passage at least in part, can provide protection against external influences, such as dust, dirt, liquids and the like.
- the cover can be coupled to the closing element and carry out the adjusting movement together with an adjusting movement of the closing element from the closed position to the open position.
- the closing element and the cover can be operatively connected to one another.
- the closing element and the cover By operatively connecting the closing element and the cover, the closing element and the cover can be moved together into the opening position when either the actuating movement of the closing element or the actuating movement of the cover is controlled.
- An advantageous embodiment of the pressure relief device can provide that the cover is attached to the closing element.
- the cover can be attached to the locking element by means of a plug connection, snap connection, welded connection, adhesive connection or the like.
- one or more retaining elements can be provided on the cover, by means of which the cover can be attached to the closing element.
- the cover can be either detachably attached to the locking element or firmly fixed to the locking element.
- the cover is formed integrally with the closing element or with a component of the closing element.
- the cover and the closing element or the component of the closing element can be formed as a common molded body, for example a plastic molded body.
- cover and the closure element or the cover and the closure element component may be formed as an integral injection-molded component.
- a particularly preferred development of the pressure relief device can provide that the outlet in the opening position of the closing element and the cover has a flow path that is free of deflection in the radial direction for the medium flowing through the outlet to an outside.
- the medium can be deflected in the radial direction by the closing element after flowing through the passage and then discharged to the outside in the radial direction without deflection.
- the medium can be discharged to the outside with a low pressure loss.
- the pressure relief device therefore allows a maximized volume flow to be discharged from the interior of the housing to the outside.
- a further advantageous embodiment of the pressure relief device can also provide that the cover and the closing element are arranged in the opening position in a raised position with respect to the base body, in which the Passage is released through a free circumferential flow cross-section of the outlet to an outside.
- the cover and the closing element are moved into the raised position relative to the base body by the adjusting movement.
- the base body and the closing element as well as the cover can be arranged at a distance from each other.
- the free circumferential flow cross-section of the outlet is formed by a distance between the base body and the closing element as well as the cover.
- One embodiment of the pressure relief device can provide that the cover has a lid portion and a peripheral portion delimiting the lid portion, wherein the peripheral portion extends in such a way that it at least partially covers an outer circumference of the closing element.
- the cover is designed as a molded body, for example as a plastic molded body, in particular an injection molded element.
- the cover has a circular geometry in plan view.
- the cover can have a plate-shaped or pot-shaped configuration.
- the peripheral portion completely surrounds the cover portion and extends from the cover portion in a shape bent toward the base body, so that the peripheral portion covers the outer circumference of the closing element.
- one end of the peripheral portion extends in the direction of the base body substantially up to the level of an underside of the closing element facing the passage.
- the pressure relief device can also be provided with the fact that, in the opening position, the deflection-free flow path of the outlet to the outside is formed by a distance formed in an adjusting movement direction between an end section of the cover and the base body, in particular an edge region of the base body delimiting the passage.
- the closing element has a gas passage through which, in the closed position of the closing element, a gas exchange is provided between an inlet-side interior and an outlet-side exterior.
- the gas passage enables gas exchange between the interior and the outside and prevents liquid exchange between the interior and the outside.
- the gas exchange can be enabled by the gas passage both from the interior towards the outside and in the opposite flow direction.
- the gas passage can be formed by one or more openings, channels, bores or the like.
- a further development of the pressure relief device can provide that a gas-permeable and liquid-impermeable element, in particular a permeable membrane, is provided in the gas passage.
- a gas-permeable and liquid-impermeable element in particular a permeable membrane
- the permeable membrane enables gas exchange between the interior and the outside and prevents liquid from penetrating from the outside into the interior of the housing.
- the membrane may be made of any suitable material that allows gas exchange and prevents the penetration of liquid from the outside towards the interior of the housing.
- the pressure relief device can be provided with an actuating device by means of which the actuating movement of the closing element and/or the cover from the closed position to the open position can be controlled when the defined activation pressure is exceeded.
- the actuating device can have a pressure activation device associated with the inlet, on which a gas pressure on the inlet side, in particular a gas pressure in the interior of the housing, acts.
- the pressure activation device can be configured to control the actuating device when the defined activation pressure is exceeded and to trigger the actuating movement of the closing element and/or the cover.
- a preferred development of the pressure relief device can also provide that the actuating device has a force storage element which is operatively connected to the closing element and/or the cover and controls the actuating movement of the closing element and/or the cover when the defined activation pressure is exceeded.
- the force storage element is designed as one or more spring elements.
- the force storage element is arranged in an activated configuration in the closed position of the closing element and the cover, for example a pre-tensioned configuration.
- the activated force storage element is triggered to act on the closing element and/or the cover and to control the adjustment movement of the closing element and the cover into the opening position.
- the base body and/or the closing element and/or the cover can be formed at least partially from a composite material or a thermoplastic material.
- the base body and/or the closing element and/or the cover can be made of any thermoplastic material or any composite material, for example PBT-GF30.
- the base body and/or the closing element and/or the cover can each be made of the same material or can be made of different materials.
- the base body can be made of any other suitable material, for example a metal, in particular light metal.
- An embodiment of the pressure relief device can also provide that the base body can be fixed in the relief opening of the housing, in particular by means of a bayonet lock, a plug connection, screw connection, snap connection, clip connection or the like, or the base body is formed integrally with the housing or a component of the housing.
- connecting elements corresponding to one another are formed on the base body and on the housing, which form the bayonet lock, the plug connection, the screw connection, the snap connection, the clip connection or the like.
- the base body can be fixed to the housing by means of a bayonet lock, a plug connection, a screw connection, a snap connection, a clip connection or the like.
- the base body can be formed integrally with the housing or the component of the housing.
- the base body can be welded, glued or the like to the housing or the component of the housing, or the base body can be formed with the housing or the component of the housing as an integral component, for example as an injection-molded component.
- the invention is also based on the object of proposing a housing, in particular a battery storage housing for accommodating one or more battery modules, which enables safe operation and has a simple structure.
- a housing in particular a battery storage housing for accommodating one or more battery modules, comprising a housing body which encloses an interior space, and at least one relief opening provided in the housing body which forms a connection between the interior space and an outside, wherein a pressure relief device according to one of the previously described embodiments is provided in the at least one relief opening.
- the housing preferably comprises one or more pressure relief devices according to the invention, each of which is provided in a relief opening in the housing.
- Such a battery storage housing is preferably suitable for use in motor vehicles, buses, trucks and the like. Further preferred features and/or advantages of the invention are the subject of the following description and the drawings of embodiments.
- Fig. 1 is a schematic sectional view of an inventive
- Fig. 2 is a schematic sectional view of the pressure relief device in
- Fig. 1 in an open configuration.
- FIG. 1 and 2 show schematic sectional views of an embodiment of a pressure relief device according to the invention, designated as a whole by 100.
- Fig. 1 shows the pressure relief device 100 in a closed configuration in which a medium is prevented from flowing through the pressure relief device 100.
- Fig. 2 shows the pressure relief device 100 in an open configuration in which the medium is allowed to flow through the pressure relief device 100.
- the pressure relief device 100 can have a substantially round geometry. Likewise, the pressure relief device 100 can have any other geometry, for example an oval geometry, angular geometry or the like.
- the pressure relief device 100 comprises a base body 102, a closing element 104 and a cover 106.
- the pressure relief device 100 is designed in particular for arrangement in a relief opening 108 in a housing 110.
- the housing 110 can in particular be a battery storage housing in which several battery modules (not shown in the drawings) can be accommodated.
- a battery module can preferably comprise one or more battery cells.
- the housing 110 may preferably enclose an interior space 112.
- a fluidic connection can be formed between the interior 112 and an exterior 114.
- the pressure relief device 100 can be arranged in the relief opening 108 to close the relief opening 108 of the housing 110 and is designed to open the relief opening 108 when a defined activation pressure in the interior 112 of the housing 110 is exceeded, for example an overpressure or bursting pressure.
- a defined activation pressure in the interior 112 of the housing 110 is exceeded, for example an overpressure or bursting pressure.
- the medium located in the interior 112 for example a gas, can be discharged to an outside 114.
- the base body 102 can be fixed in the relief opening 108 of the housing 110.
- a bayonet lock 116 is formed on the base body 102, by means of which the base body 102 can be fixed in the relief opening 108 by means of corresponding engagement elements 118 which are formed on the housing 110.
- the base body 102 can be fixed to the housing 110 in the relief opening 108 by means of a plug connection, screw connection, snap connection, clip connection or the like.
- the base body 102 can be formed integrally with the housing 110 or a housing component of the housing 110.
- the base body 102 has a substantially round geometry.
- the geometry of the base body 102 is adapted to a geometry of the relief opening 108.
- the base body 102 can have an oval, square or any other geometry.
- the base body 102 is preferably at least partially made of a suitable thermoplastic or of a composite material, for example PBT-GF30.
- the base body 102 can preferably be designed as a molded body, in particular a plastic molded body, for example an injection molded element.
- the base body 102 can be made of any other suitable material, for example a metal, in particular light metal.
- the base body 102 comprises a passage 120 which connects an inlet 122 and an outlet 124 for the flow of the medium, in particular the gas.
- a recess 128 is provided on the outer peripheral portion 126, in which a sealing element 130 is arranged.
- the sealing element 130 forms a gas-tight and/or liquid-tight seal between the base body 102 and the housing 110.
- the passage 120 has a preferably round flow cross-section.
- the passage 120 can be closed by the closing element 104.
- the closing element 104 is arranged in a closed position 132 in which flow of the medium through the passage 120 is prevented.
- the closing element 104 in the closed position 132 rests against a contact section 134 of the base body 102 delimiting the passage 120.
- the closing element 104 has a substantially round geometry.
- the geometry of the closing element 104 is adapted to the geometry of the passage 120.
- the closing element 104 is preferably at least partially made of a suitable thermoplastic or of a composite material, for example PBT-GF30.
- the closing element 104 can be made of any other suitable material, for example a metal, in particular light metal.
- the locking element 104 can be composed of several components.
- the closing element 104 or the multiple components of the closing element 104 can be designed as molded bodies, in particular as plastic molded bodies, for example injection molded parts.
- a sealing element 136 is provided on the closing element 104, with which the closing element 104 in the closed position 132 rests in a sealing manner on the contact section 134 of the base body 102.
- the sealing element 136 can be designed as a ring seal and arranged on a peripheral portion of the closing element 104.
- the sealing element 136 can be formed as a separate component and attached to the closing element 104.
- sealing element 136 can be injection-molded onto the closing element 104; for example, the closing element 104 and the sealing element 136 can be formed as a two-component injection-molded part.
- the sealing element 136 can be made of an elastomeric plastic.
- the closing element 104 can be moved from the closed position 132 into an opening position 138 shown in Fig. 2 by an adjusting movement.
- the actuating movement for transferring the closing element 104 from the closed position 132 to the opening position 138 can be controlled by an actuating device 140.
- the actuating device 140 is in particular designed to control the actuating movement of the closing element 104 from the closed position 132 to the opening position 138 when the defined activation pressure is exceeded.
- the actuating device 140 comprises a piston 142 which is coupled to the closing element 132 and a force storage element 144 which controls the actuating movement.
- the piston 142 and the closing element 132 can be two separate components that are coupled together or can be formed integrally with each other.
- the force storage element 144 is in particular a spring element, for example a spiral spring.
- the force storage element 144 is provided in an activated configuration, in particular the spring element is provided in a preloaded configuration.
- the force storage element 144 When the defined activation pressure is exceeded, the force storage element 144 is activated or triggered and controls the actuating movement of the piston 142, which acts on the closing element 104 in order to move it from the closed position 132 to the opening position 138.
- the spring element is activated when the defined
- Activation pressure is released by activating or triggering and acts with a spring force on the piston 142 in order to control the adjusting movement and to transfer the closing element 104 from the closed position 132 to the opening position 138.
- the actuating device 140 can preferably have a pressure activation device 146.
- the pressure activation device 146 can be assigned to the inlet side of the interior 112 of the housing 110.
- the pressure activation device 146 can be configured such that an inlet-side media pressure, in particular a gas pressure in the interior 112 of the housing 110, acts on it, and when the defined activation pressure is exceeded, the pressure activation device 146 can activate or trigger the force storage element 144 so that the actuating movement of the closing element 104 is controlled via the piston 142.
- the adjusting movement of the closing element 104 from the closed position 136 into the opening position 138 is carried out in particular relative to the base body 102 in an adjusting movement direction R in the direction of the outer side 114.
- the closing element 104 is designed to release the passage 120 by the adjusting movement when the defined activation pressure in the interior 112 of the housing 110 is exceeded.
- the cover 106 is coupled to the closing element 104 and, together with the adjusting movement of the closing element 104, carries out an adjusting movement from the closed position 132 to the opening position 138 in order to release the passage 120.
- the cover 106 is attached to the closing element 104.
- the cover 106 can be attached to the closing element 104 by a plug connection, snap connection, weld connection, adhesive connection or the like.
- the cover 106 may be formed integrally with the closure member 104 or with a component of the closure member 104.
- the cover 106 can preferably be designed as a molded body, in particular a plastic molded body, for example an injection molded element.
- the cover 106 is formed by a cover portion 148 and a peripheral portion 150 surrounding the cover portion 148 on the circumference.
- One or more retaining elements 152 may be provided on the cover 106, by means of which the cover 106 is attached to the closing element 104.
- the cover 106 can be attached to the closing element 104 at a distance therefrom, for example a gap can be formed between the cover 106 and the closing element 104.
- the peripheral portion 150 of the cover 106 extends from the lid portion 148 in a shape bent toward the base body 102 such that the peripheral portion 150 covers an outer periphery 154 of the closing element 104.
- an end portion 156 of the peripheral portion 150 of the cover 106 does not extend further in the direction of the base body 102 than an underside of the closing element 104 facing the passage 120.
- the cover 106 and the closing element 104 are arranged in a raised position with respect to the base body 102, in particular with respect to an outlet-side edge region 158 of the base body 120 delimiting the passage 120.
- the passage 120 is exposed to the outside 114 by a free circumferential flow cross-section Q in the opening position 138, i.e. in the raised position of the cover 106 and the closing element 104.
- the outlet 124 to the outside 114 is formed by the free circumferential flow cross-section Q in the opening position 138 of the cover 106 and the closing element 104, i.e. in the raised position of the cover 106 and the closing element 104.
- a flow path S which is free of deflection in the radial direction is formed by the free circumferential flow cross-section Q in the opening position 138 of the closing element 104 and the cover 106 for the medium flowing through the outlet 124 to the outside 114.
- This flow path S which is free of deflection in the radial direction, is preferably formed in that the cover 106 in the opening position 138, ie in the position raised with respect to the base body 102, is formed by a distance A in the direction of adjustment movement R between the end section 156 of the cover 106 and the base body 102, in particular the edge region 158 of the base body 120 delimiting the passage 120.
- the distance A provided in the direction of adjustment movement R between the end portion 156 of the cover 106 and the base body 102, in particular the edge region 158 of the base body 120 delimiting the passage 120, can be 10 mm or more, preferably 20 mm or more, particularly preferably 30 mm or more.
- the cover 106 in particular the end section 156, does not form a flow obstacle, so that the medium flowing out of the outlet 124 can exit to the outside 114 in the radial direction without deflection.
- the passage 120 can be opened up by a flow cross-section Q of the outlet 124 that is as large as possible, so that the medium can flow to the outside 114 with a large volume flow or the medium can flow through the passage 120 from the interior 112 to the outside 114 with little pressure loss.
- a gas passage 160 can preferably be provided in the closing element 104. In the closed position 132 of the closing element 104, a gas exchange between the inlet-side interior 112 and the outlet-side exterior 114 can be ensured by the gas passage 160.
- pressure equalization between the interior 112 of the housing 110 and the outside 114 can be provided by the gas passage 160 in the closed position 132 of the closing element 104 below the defined activation pressure.
- the gas passage 160 can enable gas exchange from the interior 112 toward the exterior 114 as well as in the reverse flow direction.
- the gas passage 160 enables, in particular, gas exchange between the interior 112 and the exterior 114 and prevents liquid exchange between the interior 112 and the exterior 114.
- the gas passage 160 is formed by one or more openings, channels, bores or the like.
- a gas-permeable and liquid-impermeable element 162 is arranged in the gas passage 160.
- the gas-permeable element 162 can in particular be designed as a permeable membrane.
- One or more openings 164 can be formed in the cover 106, through which the medium exiting through the gas passage 160 can be diverted to the outside 114.
- the medium exiting through the gas passage 160 can be diverted to the outside 114 through the distance or gap formed between the cover 106 and the closing element 104.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Safety Valves (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19/262,269 US20250337090A1 (en) | 2023-01-30 | 2025-07-08 | Pressure relief device and housing |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023102182.6A DE102023102182A1 (de) | 2023-01-30 | 2023-01-30 | Druckentlastungseinrichtung und Gehäuse |
| DE102023102182.6 | 2023-01-30 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US19/262,269 Continuation US20250337090A1 (en) | 2023-01-30 | 2025-07-08 | Pressure relief device and housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024160643A1 true WO2024160643A1 (de) | 2024-08-08 |
Family
ID=89767285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/051761 Ceased WO2024160643A1 (de) | 2023-01-30 | 2024-01-25 | Druckentlastungseinrichtung und gehäuse |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20250337090A1 (de) |
| DE (1) | DE102023102182A1 (de) |
| WO (1) | WO2024160643A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7837399B2 (ja) * | 2022-04-27 | 2026-03-30 | 株式会社ニフコ | 調圧弁 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019100085A1 (de) * | 2019-01-04 | 2020-07-09 | Mann+Hummel Gmbh | Entgasungseinheit, Elektronikgehäuse, insbesondere Batteriegehäuse, und Kraftfahrzeug |
| DE102020210388A1 (de) * | 2020-08-14 | 2022-02-17 | Elringklinger Ag | Druckausgleichsvorrichtung und elektrochemisches System |
| US20220090688A1 (en) * | 2017-04-28 | 2022-03-24 | Nitto Denko Corporation | Ventilation unit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019204859A1 (de) * | 2019-04-04 | 2020-10-08 | Elringklinger Ag | Druckausgleichsvorrichtung und elektrochemisches System |
| DE102021125558A1 (de) * | 2021-10-01 | 2023-04-06 | Woco Industrietechnik Gmbh | KFZ-Batterie-Druckausgleichsventil |
-
2023
- 2023-01-30 DE DE102023102182.6A patent/DE102023102182A1/de active Pending
-
2024
- 2024-01-25 WO PCT/EP2024/051761 patent/WO2024160643A1/de not_active Ceased
-
2025
- 2025-07-08 US US19/262,269 patent/US20250337090A1/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220090688A1 (en) * | 2017-04-28 | 2022-03-24 | Nitto Denko Corporation | Ventilation unit |
| DE102019100085A1 (de) * | 2019-01-04 | 2020-07-09 | Mann+Hummel Gmbh | Entgasungseinheit, Elektronikgehäuse, insbesondere Batteriegehäuse, und Kraftfahrzeug |
| DE102020210388A1 (de) * | 2020-08-14 | 2022-02-17 | Elringklinger Ag | Druckausgleichsvorrichtung und elektrochemisches System |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102023102182A1 (de) | 2024-08-01 |
| US20250337090A1 (en) | 2025-10-30 |
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Legal Events
| Date | Code | Title | Description |
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