EP1151236B1 - Dispositif anti-recul avec frein, compensateur du frein et recuperateur - Google Patents
Dispositif anti-recul avec frein, compensateur du frein et recuperateur Download PDFInfo
- Publication number
- EP1151236B1 EP1151236B1 EP00905119A EP00905119A EP1151236B1 EP 1151236 B1 EP1151236 B1 EP 1151236B1 EP 00905119 A EP00905119 A EP 00905119A EP 00905119 A EP00905119 A EP 00905119A EP 1151236 B1 EP1151236 B1 EP 1151236B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- chamber
- cavity
- subsidiary
- principal
- 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.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 230000004888 barrier function Effects 0.000 claims description 5
- 238000010304 firing Methods 0.000 abstract description 16
- 238000006073 displacement reaction Methods 0.000 description 12
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000003416 augmentation Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A25/00—Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
- F41A25/16—Hybrid systems
- F41A25/20—Hydropneumatic systems
Definitions
- the present invention relates to anti-recoil devices for guns and mortars and more specifically the anti-recoil devices that comprise a parking brake and, associated with this brake, a compensator and a recuperator.
- German Patent DE 103 975 of the August 18, 1898 offers an anti-recoil device where a brake equipped with a compensator plays, in addition to its role of brake, a role of recuperator.
- the device according to this patent can be described as being an anti-recoil device which includes a firing brake serving as recuperator and a compensator coupled to the brake by a conduit, the brake having a main cavity, a main piston pierced with holes and a main rod with an integral end of the piston and one end out of the cavity, the piston forming a barrier imperfect which subdivides the cavity into a small chamber in which passes the rod and a large chamber, the compensator having an auxiliary cavity, a sealed auxiliary piston, for delimit a secondary chamber in the annex cavity, and a system booster which acts on the auxiliary piston to tend to reduce the volume of the annex chamber, the device having its main cavity and its annex chamber filled with liquid, the conduit connecting between they the small room and the annex room and the system being intended to be used with the small room that increases volume during the recoil.
- the adjoining chamber is not in direct contact with the conduit but via channels drilled in a fixed piston; the piston appendage slides between the fixed piston that surrounds and the side walls the surrounding cavity surrounding it; speed reduction is obtained through valves that close, but that in part, the channels when returning.
- the assembly formed of the auxiliary piston and the fixed piston with its channels and its support, is complicated to realize, expensive and relatively fragile.
- the present invention aims to avoid these disadvantages.
- FIG. 1 is a schematic longitudinal sectional view a reverse brake.
- This brake comprises a cavity 1 filled with a liquid 4, a piston 2 which can move in a direction XX in the cavity and a rod 3 secured to the piston; the liquid 4 is usually oil.
- the cavity has a longitudinal axis XX parallel to the firing direction of the weapon system considered; this cavity is of constant section, generally circular.
- the stem is parallel to the direction XX and has its first end attached to the piston; it crosses the floor of the cavity through an opening whose watertightness is provided by a seal, so as to have its second end off of the cavity and to allow a displacement of the piston in the cavity, without loss of liquid.
- the piston defines two chambers in the cavity; these rooms are usually called small room for that, 11, located on the same side of the piston 2 as the rod 3 and large for the other, 12.
- the piston is pierced with holes, such as hole 20, the dimensions are calibrated to ensure the braking intensity desired: the smaller the total cross section of these holes, the smaller the resistance to fluid exchange between the two chambers is big.
- the brakes can be used in four configurations different depending on whether the fire tube is attached to the rod or the wall of the cavity and that, during the recoil, the displacement of the stem relative to the cavity causes a decrease in the volume of the small room or an increase of this volume.
- Figures 2a at 2d illustrate these four configurations in simplified diagrams where the cavity 1 is drawn in section so as to show the piston 2 and 3.
- the cavity 1 is fixed and the recoil leads to a reduction in the volume of the small room; the stem 3 works in traction.
- the rod 3 is also fixed but hindsight increases the volume of the small chamber; the stem 3 then works in compression.
- Figure 3 shows how a compensator can be associated with a brake of the type of the one that has been described in Figure 1, to compensate for these variations in volume and, at the same time, compensate for changes in the volume of liquid due to thermal expansion.
- the assembly according to FIG. 3 comprises a brake similar to that of Figure 1 except that it has an opening, A, in the wall of the cavity 1 in the vicinity of that of the two ends of the cavity which is located in the big room.
- This set includes also an auxiliary cavity 1 ', of longitudinal axis YY parallel to XX; a piston 2 'can slide in this cavity, where, with the help of a seal 20 ', it constitutes a tight barrier between one side a clearing house 13 and on the other side a room Annex 14.
- the clearing house is filled with the same liquid, 4, that the cavity 1 with which it is in communication through opening A.
- Annex room 14 is in communication with the amblant atmosphere by a hole V; this annex room serves as housing with a coil spring, R; this spring that creates pressure to inside the clearing chamber 13, absorbs, by action on the piston 2 ', the volume variations of the compensation chamber 13.
- the annex chamber 14 may be without communication with the outside atmosphere and the spring can be replaced by a gas under pressure or the spring R can be located in the chamber of compensation and work in traction.
- the annex cavity 1 has its axis YY parallel to the axis XX of the cavity 1; it can even be in direct mechanical connection with the cavity 1 only by a duct which, like the opening A according to the figure 3, would communicate the large room and the room of compensation.
- the replacement in initial position of fire of a fire tube, after firing an ammunition and retreating during that shot, is usually provided by a hydro-pneumatic recuperator; the role of the recuperator is to store some of the energy of recoil for, then, to restore it in order to bring the tube back to the position initial.
- FIG. 4 is a diagram of an exemplary embodiment of a such recuperator. This figure shows two cavities 1a, 1b axes longitudinal X'X 'and Y'Y' and constant sections; these cavities views in longitudinal section in FIG. 4 are joined together by a leads W near their first end; the first ends of the cavities 1a and 1b are closed while only the second end of the cavity 1b is closed.
- the cavity 1a can slide a piston 2a integral with a rod 3a of axis parallel to the axis X'X '; the axis X'X 'must be parallel to the recoil direction of the fire tube which is not an obligation for the axis Y'Y 'which can make any angle with the direction of recoil of the fire tube.
- the piston 2a is provided with a seal so as to constitute a tight barrier inside the cavity la; likewise the rod 3a passes through the first closed end of the cavity 1a by an orifice provided with a seal to seal the crossing.
- a piston 2b can slide along the axis Y'Y '; this piston is provided with a seal so as to constitute a barrier between two chambers 15 and 16 which it delimits within this cavity.
- the space between the pistons 2a, 2b and which includes the inside of the conduit W and the chamber 15 is filled with a liquid 4 while the chamber 16 between the piston 2b and the second end of the cavity 1b is filled with a gas under pressure and that the face of the piston 2a to the opposite of the rod 3a is to the pressure atmospheric; the liquid is usually oil and the gas of nitrogen.
- the fire tube can be secured to either the rod 3 and then the cavities 1a, 1b are fixed, ie cavities 1a, 1b and the piston-rod assembly, 2a-3a, is fixed.
- cavities 1a, 1b have been shown separately in FIG. is not an obligation, they could be joined like the two Brake cavities with compensator of Figure 3.
- the gas under pressure of the cavity 16 can be replaced by a spring that works in compression during the recoil or by a spring in the cavity 15, this last spring working in traction during the recoil.
- FIG. 5 is a longitudinal sectional view of a brake with compensator which is designed to play the role of recuperator.
- this brake corresponds to the recuperator according to FIG. 4, in which the end of the cavity opposite to the stem would be obstructed, in which the piston 2a would be deliberately leakproof and in which the entire cavity 1a would be filled with liquid.
- the brake thus constituted must have its stem who works in compression during the retreat, that is to say, be in one any of the configurations illustrated in Figures 2b, 2d; these configurations are those where the recoil has the effect of compressing the gas or the spring put in place of the gas or stretch the spring which has been said about figure 4 that it could be placed in chamber 15.
- Figure 5 thus appear a main cavity 1 of axis XX, with a piston 2, a rod 3, a small chamber 11, a large chamber 12 and a secondary cavity 6 of axis YY, with a piston 60, a secondary chamber 61 in communication, by a orifice C, with the small chamber 11 and a compression chamber 62 filled with a pressurized gas 5.
- the piston 2 is rendered leaky through holes such as 20.
- control rod 7 in the large chamber 12 and a hollow part in the piston-rod assembly 2-3 next to the rod 7.
- the rod 7 integral with the cavity 1 is profiled in truncated cone and penetrates more or less into the hollow part of the rod 3 according to the position of the piston 2 in the cavity 1.
- This control rod assembly-hollow part constitutes a system classic to get the most constant brake pressure possible throughout the retreat.
- a valve 21 provided with a return spring 22 in connection with the piston 2, a valve 21 provided with a return spring 22.
- the valve is pierced with holes such as 210 which have a section of the order four times smaller than the holes such as 20 and the spring 22 tends to press the valve 21 on the piston 2.
- holes such as 210 which have a section of the order four times smaller than the holes such as 20 and the spring 22 tends to press the valve 21 on the piston 2.
- each hole such as 210 opens into a hole such as 20 and vice versa.
- the valve 21 is pressed on the piston 2 as long as the pressure in the large chamber 12 is less than the pressure in the small chamber increased by the pressure exerted by the spring 21 on the valve; beyond that, the flap opens.
- Figures 6a to 6d show the drawing of the brake with compensator of Figure 5 in a configuration according to Figure 2d that is to say with the fixed rod 3 and the movable cavities 1, 6; this is symbolized by a ground pin which bears the mark M1 in Figure 6a.
- a rubber damper occupies a position fixed; it is symbolized by a rectangle supported on a ground stud.
- Figure 6b shows the brake as it stands, during the recoil fire tube, in an intermediate position between the initial position and the maximum rear position.
- An arrow D symbolizes the displacement of the cavities 1, 6 during the recoil; hindsight leads to a strong pressure increase in the large room 12 from where a opening of the valve 21 which allows a rapid passage of liquid from the large room to the small room 11; an arrow Dp symbolizes the flow of liquid through the piston 2.
- the increase pressure in the large chamber causes: - a flow of liquid, symbolized by an arrow Dr, from the small chamber to the secondary chamber 61 - a push on the piston 60 that comes compressing the gas enclosed in the compression chamber 62.
- cavities 1, 6 are in the position illustrated in Figure 6c with the valve 21 which closes; the pressure in the chamber of compression 62 is maximum and will therefore push the piston 60 and by there even cause a reflux of liquid which leads to a displacement cavities 1, 6 in which the length of the rod 3 located at the interior of the cavity 1 decreases.
- Figure 6d shows the brake as it is when returning in initial position; the drawing corresponds to an intermediate position and, in this drawing, the displacements are symbolized by an arrow D ' for the cavities 1, 6 and by two arrows Dr 'and Dp' for the liquid; these three arrows correspond, but with opposite directions, respectively to the three arrows D, Dr and Dp according to Figure 6b.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
- Fluid-Damping Devices (AREA)
- Actuator (AREA)
- Chairs Characterized By Structure (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Description
- la figure 1, un frein de tir vu en coupe,
- les figures 2a à 2d les différentes façons d'utiliser un frein de tir,
- la figure 3, une vue en coupe d'un frein de tir associé à un compensateur,
- la figure 4, une vue en coupe d'un récupérateur,
- la figure 5, une vue en coupe d'un dispositif selon l'invention,
- les figures 6a à 6d, le dispositif de la figure 5 dans quatre positions qu'il occupe successivement lors d'un tir du système d'arme auquel il est incorporé.
- un écoulement de liquide de la petite chambre vers la grande chambre en ralson de la diminution du volume de la petite chambre; une flèche Dp symbolise cet écoulement
- une augmentation du volume global disponible pour le liquide dans la cavité, du fait que le volume occupé par la tige dans la cavité diminue; il en résulte une augmentation de la pression du liquide dans la chambre 11 et, en concordance, un déplacement du piston 2' sous l'action du ressort R pour réduire le volume de la chambre de compensation; une flèche Dc symbolise ce déplacement du piston 2' et une flèche Dt symbolise l'écoulement résultant de liquide de la chambre de compensation 13 vers la grande chambre 12.
Claims (3)
- Dispositif anti-recul comportant un frein de tir servant de récupérateur et un compensateur couplé au frein par un conduit (C), le frein comportant une cavité principale (1), un piston principal (2) percé de trous (20) et une tige principale (3) avec une extrémité solidaire du piston et une extrémité hors de la cavité, le piston formant une barrière imparfaite qui subdivise la cavité en une petite chambre (11) dans laquelle passe la tige et une grande chambre (12), le compensateur comportant une cavité annexe (6), un piston annexe étanche (60), pour délimiter une chambre annexe (61) dans la cavité annexe, et un système de rappel (62-5) qui agit sur le piston annexe pour tendre à réduire le volume de la chambre annexe, le dispositif ayant sa cavité principale et sa chambre annexe remplies de liquide, le conduit (C) reliant entre elles la petite chambre (11) et la chambre annexe (61) et le système étant prévu pour être utilisé avec la petite chambre qui augmente de volume lors du recul, caractérisé en ce que la chambre annexe constitue un espace vide strictement délimité par le piston annexe et la cavité annexe et en ce qu'un clapet (21) est monté sur l'ensemble constitué par le piston principal et la tige afin d'obturer partiellement les trous quand il est fermé et de s'ouvrir quand la pression dans la grande chambre (12) dépasse celle dans la petite chambre d'une valeur prédéterminée.
- Dispositif selon la revendication 1, caractérisé en ce qu'il comporte une tige de contrôle (7) solidaire de la cavité principale (1) et disposée dans la grande chambre (12) et en ce que l'ensemble constitué par le piston principal (2) et la tige principale (3) présente une partie creuse, en regard de la tige de contrôle (7), et dans laquelle la tige de contrôle pénètre plus ou mois profondément selon la position du piston principal dans la cavité principale.
- Dispositif selon la revendication 1, caractérisé en ce que le système de rappel est une chambre étanche (62) remplle d'un gaz (5), cette chambre remplie d'un gaz étant limitée par le piston annexe dans la cavité annexe à l'opposé de la chambre annexe.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9901863A FR2789760B1 (fr) | 1999-02-16 | 1999-02-16 | Dispositif anti-recul avec frein, compensateur du frein et recuperateur |
FR9901863 | 1999-02-16 | ||
PCT/FR2000/000348 WO2000049358A1 (fr) | 1999-02-16 | 2000-02-11 | Dispositif anti-recul avec frein, compensateur du frein et recuperateur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1151236A1 EP1151236A1 (fr) | 2001-11-07 |
EP1151236B1 true EP1151236B1 (fr) | 2003-09-17 |
Family
ID=9542081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00905119A Expired - Lifetime EP1151236B1 (fr) | 1999-02-16 | 2000-02-11 | Dispositif anti-recul avec frein, compensateur du frein et recuperateur |
Country Status (11)
Country | Link |
---|---|
US (1) | US6536324B1 (fr) |
EP (1) | EP1151236B1 (fr) |
JP (1) | JP4505990B2 (fr) |
AT (1) | ATE250205T1 (fr) |
DE (1) | DE60005303T2 (fr) |
DK (1) | DK1151236T3 (fr) |
ES (1) | ES2208274T3 (fr) |
FR (1) | FR2789760B1 (fr) |
NO (1) | NO320190B1 (fr) |
PT (1) | PT1151236E (fr) |
WO (1) | WO2000049358A1 (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6848351B1 (en) * | 2002-05-07 | 2005-02-01 | Robert B. Davies | Rifle |
US6758126B1 (en) * | 2003-03-24 | 2004-07-06 | The United States Of America As Represented By The Secretary Of The Army | Apparatus for initially slowly a backwards movement of a bolt group |
FR2853408B1 (fr) * | 2003-04-03 | 2007-11-30 | Giat Ind Sa | Dispositif de recuperation de l'energie produite par le recul d'une arme |
DE102006014155A1 (de) * | 2006-03-24 | 2007-09-27 | Rheinmetall Waffe Munition Gmbh | Hydropneumatisches Brems- und Vorholsystem für Rohrrücklaufgeschütze |
FR2945617B1 (fr) | 2009-05-13 | 2011-06-17 | Nexter Systems | Ensemble de frein de tir pour armes |
IL206630A (en) | 2010-06-24 | 2016-11-30 | Soltam Systems Ltd | Energy absorber for firearms |
US8468928B2 (en) | 2011-04-21 | 2013-06-25 | Mandus Group Ltd | Soft recoil system |
KR101289534B1 (ko) | 2011-12-27 | 2013-07-24 | 현대위아 주식회사 | 주퇴복좌기 조립체의 완충기 조립분해 장치 |
DE102012022683A1 (de) * | 2012-11-21 | 2014-05-22 | Rheinmetall Waffe Munition Gmbh | Massenverriegelbares Waffenverschlusssystem |
DE102012022681B4 (de) * | 2012-11-21 | 2015-03-12 | Rheinmetall Waffe Munition Gmbh | Massenverriegelbares Waffenverschlusssystem |
DE102012022682B8 (de) * | 2012-11-21 | 2015-05-13 | Rheinmetall Waffe Munition Gmbh | Rohrwaffe mit einem massenverriegelbaren Verschlusssystem |
US20160340849A1 (en) * | 2015-05-18 | 2016-11-24 | M-B-W, Inc. | Vibration isolator for a pneumatic pole or backfill tamper |
US10466004B2 (en) * | 2015-08-11 | 2019-11-05 | Drew Nolle Walker | Optimized flow compensator |
FR3047347B1 (fr) * | 2016-02-02 | 2018-02-02 | Fcd | Module d'absorption d'une onde sonore et dispositif le comprenant |
CN109827466A (zh) * | 2018-11-27 | 2019-05-31 | 中国人民解放军陆军工程大学 | 一种可压缩液体式驻退复进机 |
CN110057238B (zh) * | 2019-05-23 | 2024-01-05 | 中国人民解放军海军工程大学 | 新型减小摇架冲击力的驻退机 |
US10823523B1 (en) * | 2019-09-25 | 2020-11-03 | Mandus Group Llc | Temperature compensator for artillery system |
EP4379307A1 (fr) * | 2022-11-30 | 2024-06-05 | BAE SYSTEMS plc | Arme d'artillerie |
WO2024115876A1 (fr) * | 2022-11-30 | 2024-06-06 | Bae Systems Plc | Pièce d'artillerie |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE103975C (fr) * | 1899-02-11 | |||
FR1231005A (fr) * | 1946-07-20 | 1960-09-26 | Schneider & Cie | Frein-récupérateur |
US2574060A (en) * | 1949-04-20 | 1951-11-06 | Creusot Forges Ateliers | Hydropneumatic recuperator with adjustable power |
US3698284A (en) * | 1970-07-16 | 1972-10-17 | Us Army | Buffer system for decelerating a reciprocating gun |
NL7110752A (fr) * | 1970-10-29 | 1972-05-03 | ||
JPS5216900A (en) * | 1975-07-30 | 1977-02-08 | Hori Ebisu | Firing device |
US4599933A (en) * | 1983-12-08 | 1986-07-15 | Ares, Inc. | Breech/receiver assembly for automatic cannon |
US4827829A (en) * | 1983-12-08 | 1989-05-09 | Ares, Inc. | Recoil and counterrecoil buffer for automatic cannon |
US4774873A (en) * | 1986-09-15 | 1988-10-04 | The United States Of America As Represented By The Secretary Of The Army | Sleeve recuperator |
DE3824153A1 (de) * | 1988-07-16 | 1990-04-26 | Rheinmetall Gmbh | Waffenrohrruecklaufbremse mit vorlaufdaempfung |
FR2765958B1 (fr) | 1997-07-11 | 1999-09-24 | Tda Armements Sas | Systeme de chargement d'un mortier et mortier equipe d'un tel systeme |
-
1999
- 1999-02-16 FR FR9901863A patent/FR2789760B1/fr not_active Expired - Fee Related
-
2000
- 2000-02-11 DK DK00905119T patent/DK1151236T3/da active
- 2000-02-11 EP EP00905119A patent/EP1151236B1/fr not_active Expired - Lifetime
- 2000-02-11 US US09/926,019 patent/US6536324B1/en not_active Expired - Lifetime
- 2000-02-11 DE DE60005303T patent/DE60005303T2/de not_active Expired - Lifetime
- 2000-02-11 AT AT00905119T patent/ATE250205T1/de active
- 2000-02-11 WO PCT/FR2000/000348 patent/WO2000049358A1/fr active Search and Examination
- 2000-02-11 ES ES00905119T patent/ES2208274T3/es not_active Expired - Lifetime
- 2000-02-11 PT PT00905119T patent/PT1151236E/pt unknown
- 2000-02-11 JP JP2000600052A patent/JP4505990B2/ja not_active Expired - Lifetime
-
2001
- 2001-08-15 NO NO20013970A patent/NO320190B1/no not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
PT1151236E (pt) | 2004-02-27 |
NO320190B1 (no) | 2005-11-07 |
DE60005303D1 (de) | 2003-10-23 |
JP4505990B2 (ja) | 2010-07-21 |
DE60005303T2 (de) | 2004-07-08 |
NO20013970L (no) | 2001-10-15 |
EP1151236A1 (fr) | 2001-11-07 |
JP2002537541A (ja) | 2002-11-05 |
US6536324B1 (en) | 2003-03-25 |
NO20013970D0 (no) | 2001-08-15 |
FR2789760B1 (fr) | 2001-12-07 |
WO2000049358A1 (fr) | 2000-08-24 |
DK1151236T3 (da) | 2004-01-26 |
ATE250205T1 (de) | 2003-10-15 |
ES2208274T3 (es) | 2004-06-16 |
FR2789760A1 (fr) | 2000-08-18 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20010829 |
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