JP2022508886A - シーラント層アセンブリ - Google Patents

シーラント層アセンブリ Download PDF

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Publication number
JP2022508886A
JP2022508886A JP2021546458A JP2021546458A JP2022508886A JP 2022508886 A JP2022508886 A JP 2022508886A JP 2021546458 A JP2021546458 A JP 2021546458A JP 2021546458 A JP2021546458 A JP 2021546458A JP 2022508886 A JP2022508886 A JP 2022508886A
Authority
JP
Japan
Prior art keywords
layer
sealant layer
assembly
net
tire
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
Application number
JP2021546458A
Other languages
English (en)
Japanese (ja)
Other versions
JPWO2020083681A5 (https=
JP2022508886A5 (https=
Inventor
ペッズーロ ジュゼッペ
ボッティ フランチェスコ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Europe NV SA
Original Assignee
Bridgestone Europe NV SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bridgestone Europe NV SA filed Critical Bridgestone Europe NV SA
Publication of JP2022508886A publication Critical patent/JP2022508886A/ja
Publication of JPWO2020083681A5 publication Critical patent/JPWO2020083681A5/ja
Publication of JP2022508886A5 publication Critical patent/JP2022508886A5/ja
Priority to JP2022152288A priority Critical patent/JP7457766B2/ja
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00Producing pneumatic or solid tyres or parts thereof
    • B29D30/06Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0681Parts of pneumatic tyres; accessories, auxiliary operations
    • B29D30/0685Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/16Auto-repairing or self-sealing arrangements or agents
    • B29C73/18Auto-repairing or self-sealing arrangements or agents the article material itself being self-sealing, e.g. by compression
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C19/00Tyre parts or constructions not otherwise provided for
    • B60C19/12Puncture preventing arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C19/00Tyre parts or constructions not otherwise provided for
    • B60C19/12Puncture preventing arrangements
    • B60C19/122Puncture preventing arrangements disposed inside of the inner liner
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/06Non-macromolecular additives organic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/20Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22Plastics; Metallised plastics
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/20Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29Laminated material
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/30Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38Pressure-sensitive adhesives [PSA]
    • C09J7/381Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/383Natural or synthetic rubber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00Producing pneumatic or solid tyres or parts thereof
    • B29D30/06Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0681Parts of pneumatic tyres; accessories, auxiliary operations
    • B29D30/0685Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
    • B29D2030/0686Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00Producing pneumatic or solid tyres or parts thereof
    • B29D30/06Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0681Parts of pneumatic tyres; accessories, auxiliary operations
    • B29D30/0685Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
    • B29D2030/0686Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre
    • B29D2030/0695Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre the sealant being in the form of one wide strip, e.g. a patch
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00Pneumatic or solid tyres or parts thereof
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00Additional features of adhesives in the form of films or foils
    • C09J2301/40Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/408Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00Presence of inorganic and organic materials
    • C09J2400/20Presence of organic materials
    • C09J2400/26Presence of textile or fabric
    • C09J2400/263Presence of textile or fabric in the substrate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00Presence of inorganic and organic materials
    • C09J2400/20Presence of organic materials
    • C09J2400/28Presence of paper
    • C09J2400/283Presence of paper in the substrate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2415/00Presence of rubber derivatives
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00Presence of polyolefin
    • C09J2423/04Presence of homo or copolymers of ethene
    • C09J2423/046Presence of homo or copolymers of ethene in the substrate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2427/00Presence of halogenated polymer
    • C09J2427/006Presence of halogenated polymer in the substrate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2467/00Presence of polyester
    • C09J2467/006Presence of polyester in the substrate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2477/00Presence of polyamide
    • C09J2477/006Presence of polyamide in the substrate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2483/00Presence of polysiloxane
    • C09J2483/006Presence of polysiloxane in the substrate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2491/00Presence of oils, fats or waxes
    • C09J2491/006Presence of oils, fats or waxes in the substrate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Tires In General (AREA)
  • Sealing Material Composition (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Tyre Moulding (AREA)
JP2021546458A 2018-10-22 2019-10-14 シーラント層アセンブリ Pending JP2022508886A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2022152288A JP7457766B2 (ja) 2018-10-22 2022-09-26 シーラント層アセンブリ

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT102018000009657A IT201800009657A1 (it) 2018-10-22 2018-10-22 Assemblaggio di strato sigillante
IT102018000009657 2018-10-22
PCT/EP2019/077696 WO2020083681A1 (en) 2018-10-22 2019-10-14 Sealant layer assembly

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2022152288A Division JP7457766B2 (ja) 2018-10-22 2022-09-26 シーラント層アセンブリ

Publications (3)

Publication Number Publication Date
JP2022508886A true JP2022508886A (ja) 2022-01-19
JPWO2020083681A5 JPWO2020083681A5 (https=) 2022-05-27
JP2022508886A5 JP2022508886A5 (https=) 2022-05-27

Family

ID=65031727

Family Applications (2)

Application Number Title Priority Date Filing Date
JP2021546458A Pending JP2022508886A (ja) 2018-10-22 2019-10-14 シーラント層アセンブリ
JP2022152288A Active JP7457766B2 (ja) 2018-10-22 2022-09-26 シーラント層アセンブリ

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2022152288A Active JP7457766B2 (ja) 2018-10-22 2022-09-26 シーラント層アセンブリ

Country Status (9)

Country Link
US (1) US12053946B2 (https=)
EP (1) EP3870428B1 (https=)
JP (2) JP2022508886A (https=)
CN (1) CN112888556A (https=)
DK (1) DK3870428T3 (https=)
IT (1) IT201800009657A1 (https=)
PL (1) PL3870428T3 (https=)
PT (1) PT3870428T (https=)
WO (1) WO2020083681A1 (https=)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4930279B1 (https=) * 1970-12-29 1974-08-12
JPS5431104A (en) * 1977-08-11 1979-03-07 Dunlop Co Ltd Pneumatic tire
WO2008123175A1 (ja) * 2007-04-02 2008-10-16 The Yokohama Rubber Co., Ltd. 空気入りタイヤ
JP2013043643A (ja) * 2011-08-26 2013-03-04 Hankook Tire Co Ltd 空気入りタイヤ及びその製造方法
WO2014192497A1 (ja) * 2013-05-31 2014-12-04 株式会社アウテックス チューブレスタイヤ用の耐パンクシート、チューブレスタイヤおよびチューブレスタイヤのパンク修復方法
JP2016078818A (ja) * 2014-10-17 2016-05-16 住友ゴム工業株式会社 シーラントタイヤ及びシーラントタイヤの製造方法
JP2017061257A (ja) * 2015-09-25 2017-03-30 住友ゴム工業株式会社 タイヤの評価方法
WO2018019947A1 (en) * 2016-07-28 2018-02-01 Bridgestone Corporation Pneumatic tyre
JP2018090131A (ja) * 2016-12-05 2018-06-14 住友ゴム工業株式会社 空気入りタイヤ
JP2018525484A (ja) * 2015-07-27 2018-09-06 アランセオ・ドイチュランド・ゲーエムベーハー シーリングゲル、その製造方法およびセルフシールタイヤ用のシーリングコンパウンドでのその使用

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2012935A (en) * 1930-07-14 1935-08-27 Kelly Springfield Tire Company Vulcanizable patch
US3260296A (en) * 1964-07-13 1966-07-12 Tru Flex Rubber Products Compa Tire repair unit
US3282319A (en) * 1965-08-13 1966-11-01 Myers Ind Inc Tire patch
JPS5542967Y2 (https=) * 1976-05-07 1980-10-08
US4913209A (en) * 1985-01-22 1990-04-03 The Uniroyal Goodrich Tire Company Sealant product, laminate thereof, and pneumatic tire constructed therewith
JP4409814B2 (ja) * 2001-09-26 2010-02-03 横浜ゴム株式会社 粘着シーラント層を備えた空気入りタイヤおよびその製造方法
US7008987B2 (en) * 2003-06-10 2006-03-07 Nitto Denko Corporation Aqueous dispersion type pressure-sensitive adhesive composition, pressure-sensitive adhesive sheet, and pressure-sensitive adhesive rubber foam sheet using the sheet
DE102006038806B4 (de) * 2006-08-18 2015-06-25 Continental Reifen Deutschland Gmbh Verfahren zur Herstellung eines selbstdichtenden Fahrzeugluftreifens
DE202007013465U1 (de) * 2007-09-26 2007-11-22 Kapustin, Leonid Schutzband für den Fahrradreifen
WO2009070165A1 (en) * 2007-11-29 2009-06-04 Societe De Technologie Michelin Tire repair patch
US8298662B2 (en) * 2009-08-28 2012-10-30 W.R. Grace & Co.-Conn. Waterproofing membrane
JP6294184B2 (ja) * 2014-08-01 2018-03-14 東洋ゴム工業株式会社 空気入りタイヤ
US12103338B2 (en) 2016-12-15 2024-10-01 Bridgestone Americas Tire Operations, Llc Sealant layer with barrier, tire containing same, and related processes
CN206436745U (zh) * 2017-01-24 2017-08-25 乐高源(北京)汽车科技有限公司 一种高分子防漏气轮胎

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4930279B1 (https=) * 1970-12-29 1974-08-12
JPS5431104A (en) * 1977-08-11 1979-03-07 Dunlop Co Ltd Pneumatic tire
WO2008123175A1 (ja) * 2007-04-02 2008-10-16 The Yokohama Rubber Co., Ltd. 空気入りタイヤ
JP2013043643A (ja) * 2011-08-26 2013-03-04 Hankook Tire Co Ltd 空気入りタイヤ及びその製造方法
WO2014192497A1 (ja) * 2013-05-31 2014-12-04 株式会社アウテックス チューブレスタイヤ用の耐パンクシート、チューブレスタイヤおよびチューブレスタイヤのパンク修復方法
JP2016078818A (ja) * 2014-10-17 2016-05-16 住友ゴム工業株式会社 シーラントタイヤ及びシーラントタイヤの製造方法
JP2018525484A (ja) * 2015-07-27 2018-09-06 アランセオ・ドイチュランド・ゲーエムベーハー シーリングゲル、その製造方法およびセルフシールタイヤ用のシーリングコンパウンドでのその使用
JP2017061257A (ja) * 2015-09-25 2017-03-30 住友ゴム工業株式会社 タイヤの評価方法
WO2018019947A1 (en) * 2016-07-28 2018-02-01 Bridgestone Corporation Pneumatic tyre
JP2018090131A (ja) * 2016-12-05 2018-06-14 住友ゴム工業株式会社 空気入りタイヤ

Also Published As

Publication number Publication date
JP2023011553A (ja) 2023-01-24
WO2020083681A1 (en) 2020-04-30
EP3870428B1 (en) 2024-09-18
EP3870428A1 (en) 2021-09-01
DK3870428T3 (da) 2024-10-21
PL3870428T3 (pl) 2024-12-16
PT3870428T (pt) 2024-11-07
JP7457766B2 (ja) 2024-03-28
IT201800009657A1 (it) 2020-04-22
US20210387432A1 (en) 2021-12-16
US12053946B2 (en) 2024-08-06
CN112888556A (zh) 2021-06-01

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