WO2009152409A1 - Appareil protégé de l’humidité - Google Patents
Appareil protégé de l’humidité Download PDFInfo
- Publication number
- WO2009152409A1 WO2009152409A1 PCT/US2009/047163 US2009047163W WO2009152409A1 WO 2009152409 A1 WO2009152409 A1 WO 2009152409A1 US 2009047163 W US2009047163 W US 2009047163W WO 2009152409 A1 WO2009152409 A1 WO 2009152409A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- actuator
- film
- support
- humidity
- layer
- Prior art date
Links
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- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 239000002520 smart material Substances 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 74
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- -1 polypropylene Polymers 0.000 claims description 8
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- 239000004743 Polypropylene Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 229920001651 Cyanoacrylate Polymers 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 claims description 3
- 229920006254 polymer film Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920004439 Aclar® Polymers 0.000 claims description 2
- 229920001824 Barex® Polymers 0.000 claims description 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 2
- 239000004713 Cyclic olefin copolymer Substances 0.000 claims description 2
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 2
- 229920000106 Liquid crystal polymer Polymers 0.000 claims description 2
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims description 2
- 229920001746 electroactive polymer Polymers 0.000 claims description 2
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims description 2
- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical compound OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 claims description 2
- 229920001519 homopolymer Polymers 0.000 claims description 2
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims 1
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 claims 1
- 229920006284 nylon film Polymers 0.000 claims 1
- 229920006267 polyester film Polymers 0.000 claims 1
- 239000010408 film Substances 0.000 description 37
- 239000000463 material Substances 0.000 description 11
- 230000003321 amplification Effects 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000000593 degrading effect Effects 0.000 description 5
- 238000004382 potting Methods 0.000 description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 125000003700 epoxy group Chemical group 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 230000037361 pathway Effects 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 231100001010 corrosive Toxicity 0.000 description 2
- NLCKLZIHJQEMCU-UHFFFAOYSA-N cyano prop-2-enoate Chemical class C=CC(=O)OC#N NLCKLZIHJQEMCU-UHFFFAOYSA-N 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000003348 petrochemical agent Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 239000011104 metalized film Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000013464 silicone adhesive Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/04—Constructional details
- H02N2/043—Mechanical transmission means, e.g. for stroke amplification
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/88—Mounts; Supports; Enclosures; Casings
- H10N30/883—Additional insulation means preventing electrical, physical or chemical damage, e.g. protective coatings
Definitions
- piezoelectric actuators possess several advantages in these applications, including fast response time, proportionality of response, and high force.
- One type of piezoelectric actuator can be constructed as a "stack" including alternating thin layers of conducting and piezoelectric materials. Each layer of piezoelectric material changes shape in response to a change in the electric field across it, and the sum of these changes produces a small displacement of the stack along a predetermined axis.
- the support structure housing the actuator passively amplifies the small displacement of the stack into a larger displacement. High efficiency is required during amplification in order to produce a commercially feasible actuator of small size and low cost.
- the stack can be coated with a water-impermeable substance and/or enclosed in a water- impermeable enclosure such as a sealed metal can protect the stack from the external environment.
- a water-impermeable substance can be found in JP 9307149 A2, JP 2001102649 A2, and JP 6164011 A2.
- each one of these references suffers from one or more of the following drawbacks: rigidity of the layer or enclosure can impede the motion of the stack, requiring corrugations or the like to permit expansion and contraction of the stack; manufacture of these devices is complex and expensive; the required electrical connections to the stack can reduce the effectiveness of humidity protection, necessitating for example, the inclusion of a desiccant within the enclosure; and encasing the stack in a metal container or glassy layer can make it difficult to apply a desired predetermined compressive load to the stack.
- piezoelectric applications such as switches and direct drive devices can be encased in a potting compound
- devices in which the piezoelectric displacement is amplified by a support are not known to be potted because amplification of displacement must be efficient and essentially free of losses.
- Encasing the actuator and other moving elements in a potting material attached to the support, or protecting the actuator by other means attached to the support, would be expected by those of skill in the art to substantially degrade actuator performance, particularly at low temperatures known to cause stiffening of many potting materials.
- FIG. 3 is a perspective view of a second embodiment of the humidity- protected apparatus of the present invention including a layer of a barrier compound and recessed electrical actuator leads;
- FIGS. 4A and 4B are sectional views of the humidity-protected apparatus of the present invention, drawn about the planes indicated by lines 4A and 4B of FIGS. 2 and 3, respectively;
- FIG. 10 is a transverse section of the humidity-protected apparatus of FIG. 9.
- a stack plate 34 formed from a rigid material such as a metal or ceramic can be disposed between the support 12 and the actuator 32, and an optional load screw 38 can be disposed within a threaded opening 40 in the support to contact the actuator 32 or stack plate 34, whereby a predetermined static load can be applied to the actuator 32 by rotation of load screw 38.
- the apparatus of the present invention can include means for protecting actuator 32 from humidity, moisture, and/or other harmful substances, where the means can be attached to the support 12.
- the means can be selected to impede or prevent humidity, moisture, and/or other harmful substances from contacting the smart material actuator 32, and can be attached to the support 12.
- Applicant intends to encompass any structure that performs the same function, including but not limited to a layer of a barrier compound, or one or more films, or both.
- a barrier layer 36 can coat the surface of the actuator 32 and can form a continuous layer from at least a portion of the actuator surface to at least a portion of the inner surface 26 of the support 12.
- a "barrier layer” includes at least one barrier compound capable of impeding the passage of moisture, humidity, and/or other harmful substances.
- a "continuous layer” refers to an unbroken portion of a barrier layer that extends from at least a portion of the surface of actuator 32 to at least a portion of inner surface 24.
- the barrier layer 36 fills or substantially fills the opening in the support.
- the barrier layer can fill the portion of the opening adjacent to integral flexing portions 20,22.
- a "barrier compound” includes a solid or semi-solid compound capable of fulfilling the function of a barrier layer.
- Films suitable for use in the present invention can include, but are not limited to: coated polyesters, such a Mylar, optionally including a coating of aluminum oxide (AI 2 O 3 ), silicon oxide (SiO x ,), polyvinylidene chloride, or polyvinyl alcohol, a 48 gauge biaxially oriented polyester including an aluminum oxide coating; polypropylenes or optionally oriented polypropylenes; nylons including biaxially oriented nylons; chlorotetrafluoroethylene as a homopolymer or chlorotetrafluoroethylene copolymers, for example ethylene- chlorotetrafluoroethylene copolymers; liquid crystal polymers optionally coextruded with a second component such as a polyolefin; cyclic olefin copolymers optionally blended, for example, with polyethylene; metal films such as stainless steel films, or metallized polymer films such as aluminum metallized films; ethylene-vinyl alcohol coextrudates; and
- Insulating plate 162 can be formed from a rigid insulator, preferably a ceramic plate.
- Pin 160 can be insulated from electrical contact with the support by a non-conducting spacer 162 including an aperture with pin 160 disposed therethrough.
- Force transfer member 24 can include a second aperture through which pin 160 traverses support 12 without contacting the support.
- An insulating sleeve 168 can optionally be provided to electrically insulate the pin 160 and support 12. The placements of the first and second electrical connection are reversible.
- Embodiments of the apparatus including both a film and a barrier layer can be constructed by one of several methods in which the film and barrier layer are assembled in either order.
- the apparatus of the present invention provides some level of containment for electrical failure of the actuator.
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
L’invention concerne un appareil (10) comprenant une structure de support (12) dotée d’au moins une surface destinée au mouvement par un actionneur matériel intelligent (32), comme un actionneur piézoélectrique. L'actionneur peut être protégé de l'humidité et/ou d'autres substances nocives par, par exemple, une couche continue d'un composé formant barrière en contact avec la structure de support et enrobant l'actionneur, ou au moins un film appliqué sur la structure de support pour entourer l’actionneur, ou les deux. L'invention concerne des procédés pour la protection d'un actionneur.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6118208P | 2008-06-13 | 2008-06-13 | |
US61/061,182 | 2008-06-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009152409A1 true WO2009152409A1 (fr) | 2009-12-17 |
Family
ID=41213429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2009/047163 WO2009152409A1 (fr) | 2008-06-13 | 2009-06-12 | Appareil protégé de l’humidité |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2009152409A1 (fr) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120194037A1 (en) * | 2009-10-01 | 2012-08-02 | Parker Hannifin Corporation | Apparatus and Method for Harvesting Electrical Energy from Mechanical Motion |
EP2537246A4 (fr) * | 2010-02-17 | 2015-04-08 | Viking At Llc | Actionneur à matière intelligente avec compensateur enfermé |
US10276776B2 (en) | 2013-12-24 | 2019-04-30 | Viking At, Llc | Mechanically amplified smart material actuator utilizing layered web assembly |
US10744295B2 (en) | 2015-01-13 | 2020-08-18 | ResMed Pty Ltd | Respiratory therapy apparatus |
WO2020217610A1 (fr) * | 2019-04-23 | 2020-10-29 | 株式会社サタケ | Soupape piézoélectrique et procédé de fabrication de ladite soupape piézoélectrique |
KR20220016870A (ko) * | 2019-06-05 | 2022-02-10 | 가부시끼가이샤 사따께 | 압전 액추에이터, 압전식 밸브, 및 압전 액추에이터의 제조 방법 |
KR20220027962A (ko) * | 2019-06-28 | 2022-03-08 | 가부시끼가이샤 사따께 | 압전식 밸브 및 그 압전식 밸브의 제조 방법 |
CN113728547B (zh) * | 2019-04-23 | 2024-07-02 | 株式会社佐竹 | 压电式阀以及该压电式阀的制造方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4570095A (en) * | 1983-10-11 | 1986-02-11 | Nec Corporation | Mechanical amplification mechanism combined with piezoelectric elements |
US6211602B1 (en) * | 1997-06-24 | 2001-04-03 | Minolta Co., Ltd. | Actuator using electromechanical transducer capable of being used in high temperature and high humidity environment and apparatus having the same |
US20040124747A1 (en) * | 2001-01-29 | 2004-07-01 | Bugel John Anthony | Apparatus for moving folded-back arms having a pair of opposing surfaces in response to an electrical activation |
WO2008037632A1 (fr) * | 2006-09-26 | 2008-04-03 | Siemens Aktiengesellschaft | Dispositif d'entraînement d'actionneur de corps fixe |
-
2009
- 2009-06-12 WO PCT/US2009/047163 patent/WO2009152409A1/fr active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4570095A (en) * | 1983-10-11 | 1986-02-11 | Nec Corporation | Mechanical amplification mechanism combined with piezoelectric elements |
US6211602B1 (en) * | 1997-06-24 | 2001-04-03 | Minolta Co., Ltd. | Actuator using electromechanical transducer capable of being used in high temperature and high humidity environment and apparatus having the same |
US20040124747A1 (en) * | 2001-01-29 | 2004-07-01 | Bugel John Anthony | Apparatus for moving folded-back arms having a pair of opposing surfaces in response to an electrical activation |
WO2008037632A1 (fr) * | 2006-09-26 | 2008-04-03 | Siemens Aktiengesellschaft | Dispositif d'entraînement d'actionneur de corps fixe |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120194037A1 (en) * | 2009-10-01 | 2012-08-02 | Parker Hannifin Corporation | Apparatus and Method for Harvesting Electrical Energy from Mechanical Motion |
EP2537246A4 (fr) * | 2010-02-17 | 2015-04-08 | Viking At Llc | Actionneur à matière intelligente avec compensateur enfermé |
US10276776B2 (en) | 2013-12-24 | 2019-04-30 | Viking At, Llc | Mechanically amplified smart material actuator utilizing layered web assembly |
US10744295B2 (en) | 2015-01-13 | 2020-08-18 | ResMed Pty Ltd | Respiratory therapy apparatus |
CN113728547A (zh) * | 2019-04-23 | 2021-11-30 | 株式会社佐竹 | 压电式阀以及该压电式阀的制造方法 |
JP2020180628A (ja) * | 2019-04-23 | 2020-11-05 | 株式会社サタケ | 圧電式バルブ及び該圧電式バルブの製造方法 |
KR102633886B1 (ko) * | 2019-04-23 | 2024-02-05 | 가부시끼가이샤 사따께 | 압전식 밸브 및 그 압전식 밸브의 제조 방법 |
KR20220002378A (ko) * | 2019-04-23 | 2022-01-06 | 가부시끼가이샤 사따께 | 압전식 밸브 및 그 압전식 밸브의 제조 방법 |
WO2020217610A1 (fr) * | 2019-04-23 | 2020-10-29 | 株式会社サタケ | Soupape piézoélectrique et procédé de fabrication de ladite soupape piézoélectrique |
CN113728547B (zh) * | 2019-04-23 | 2024-07-02 | 株式会社佐竹 | 压电式阀以及该压电式阀的制造方法 |
JP7254285B2 (ja) | 2019-04-23 | 2023-04-10 | 株式会社サタケ | 圧電式バルブ及び該圧電式バルブの製造方法 |
EP3961905A4 (fr) * | 2019-04-23 | 2023-08-30 | Satake Corporation | Soupape piézoélectrique et procédé de fabrication de ladite soupape piézoélectrique |
US12004430B2 (en) | 2019-04-23 | 2024-06-04 | Satake Corporation | Piezoelectric valve and method of manufacturing the piezoelectric valve |
KR20220016870A (ko) * | 2019-06-05 | 2022-02-10 | 가부시끼가이샤 사따께 | 압전 액추에이터, 압전식 밸브, 및 압전 액추에이터의 제조 방법 |
KR102616954B1 (ko) | 2019-06-05 | 2023-12-21 | 가부시끼가이샤 사따께 | 압전 액추에이터, 압전식 밸브, 및 압전 액추에이터의 제조 방법 |
KR102650263B1 (ko) | 2019-06-28 | 2024-03-21 | 가부시끼가이샤 사따께 | 압전식 밸브 및 그 압전식 밸브의 제조 방법 |
KR20220027962A (ko) * | 2019-06-28 | 2022-03-08 | 가부시끼가이샤 사따께 | 압전식 밸브 및 그 압전식 밸브의 제조 방법 |
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