EP3821864A1 - Wheelchair for difficult paths - Google Patents
Wheelchair for difficult paths Download PDFInfo
- Publication number
- EP3821864A1 EP3821864A1 EP19834904.5A EP19834904A EP3821864A1 EP 3821864 A1 EP3821864 A1 EP 3821864A1 EP 19834904 A EP19834904 A EP 19834904A EP 3821864 A1 EP3821864 A1 EP 3821864A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- wheelchair according
- wheels
- wheelchair
- chair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000009194 climbing Effects 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/02—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
- A61G5/0875—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable dismountable, e.g. where the wheelchair can be disassembled for transportation or storage
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G2203/00—General characteristics of devices
- A61G2203/30—General characteristics of devices characterised by sensor means
- A61G2203/42—General characteristics of devices characterised by sensor means for inclination
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1005—Wheelchairs having brakes
- A61G5/1013—Wheelchairs having brakes engaging the wheel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1054—Large wheels, e.g. higher than the seat portion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1078—Parts, details or accessories with shock absorbers or other suspension arrangements between wheels and frame
Definitions
- the present invention refers to a wheelchair for travelling on nigh-impassable paths, e.g. those encountered when mountaineering. Therefore, it can be used by persons with reduced mobility in their lower body due to them being affected by either paralysis of their lower extremities, a loss of a limb, or injuries of any kind.
- the sportsperson wants to do any type of climbing or take any type of path that does not meet the conditions, they need a wheelchair that can be used on nigh-impassable paths and has aids that allow it to move under its own power or, maybe, with the minimum assistance in preparing the path.
- the applicant does not know of any wheelchair similar to that of the invention, that allows travelling on almost any path (including those which are rocky and with steep slopes) and is tailored to people with mobility issues. In other words, that is independent of the slope and the conditions of the surface.
- the invention consists in a wheelchair that can be used on nigh-impassable paths, such as those encountered when mountaineering, as claimed. It allows moving forward in a sloping situation and is mainly intended for people with reduced mobility in their lower body.
- the chair is intended to be used in very narrow paths, with steep slopes (up to 60%) or a lot of rocks. This type of path is not accessible to or passable by other types of wheelchair or "handcycles.” Thus, the chair of the invention increases the autonomy of people with reduced mobility.
- the chair has a seat carried by a series of wheels, as usual, but these wheels are disposed in a different way. It is provided with two tilted rear wheels, disposed behind the seat, and converging on its rear upper portion. In other words, they are not parallel, and their closest point is at the rear upper area of the wheels so that it can travel on very narrow paths and act as the point of support when climbing between rocks and boulders.
- a longitudinal front extension that supports a front idler wheel.
- the chair rests on three points and is highly stable. Given that the front wheel idles, it shall preferably be of small size so that it does not distort the support area of the whole too much
- the extension also has a fixed handle in a seat-facing position that can be used to incorporate optional complements such as headlamps (longitudinal and/or transverse), tilt sensors, water bottles, brake push buttons for the front wheel, and so on.
- optional complements such as headlamps (longitudinal and/or transverse), tilt sensors, water bottles, brake push buttons for the front wheel, and so on.
- the chair also has a push wheel on each side of the seat, generally parallel, for propelling oneself, and preferably detachable. More preferably, its lower portion shall be on a lower plane in relation to the rear wheels.
- the extension preferably supports stirrups for fastening the user's feet.
- the extension supports a coupling for a cable, a rope or the like to allow the user to move forward in difficult terrain using climbing-like techniques without having to use the traditional push wheels.
- the cable can be wound up on a drum or winder.
- the chair of the embodiment shown in the figures comprises a seat (1), preferably narrow and with a safety harness or belt, carried by a series of wheels (2, 3, 4), which fall into various types:
- the rear wheels (4) shall be more elevated than the push wheels (2) so that they only touch the ground if the chair tilts backwards or if the push wheels (2) have been detached. Thus, in the second situation they shall lower the centre of gravity of the whole to increase the stability. If desired, the rear wheels (4), or any other wheel (2, 3) or shaft, will have suspension or shock-absorbing equipment.
- the extension (5) of this embodiment can be seen particularly well in Figure 1 . It consists in a horizontal profile joined to the lower portion of the seat (1) and the front wheel (3).
- a fixed handle (6) which shall be disposed in a position that is easy to reach by the user of the chair, emerges from the profile. It can be used by the person with reduced mobility to rest their arms on and adopt a comfortable posture.
- a tilt sensor (gyroscope, accelerometer, bubble level?) allowing the user to know the tilt of the chair on the longitudinal and transverse axes and hence the risk of overturning can be situated on this handle (6).
- a brake, with a Bowden cable, for the front wheel (3) or for the push wheels (2) can also be placed thereon.
- the chair can have a 360° camera built in for recording and studying the terrain, a GPS and a pivoting compass, as well as a parasol, backup electric motors (preferably on the push wheels (2)), batteries, and a solar panel for recharging the latter.
- the chair has, e.g. on the handle (6) or before it, a coupling (7) for a cable (8) or the like that allows the chair to be anchored to a fixed point.
- a safety rope or lifeline like those used for climbing can thus be installed.
- this cable (8) allows the user of the chair to haul themselves up by pulling or winding it up.
- the winding-up can be done on a drum with two handles for manual turning or on a motor-driven drum, by hauling oneself up or by means of the "rope and fist" climbing technique.
- a winding system can be installed behind the seat, or at its height.
- This winding system can be a drum with a loosely coiled spring that winds up the slack cable (8) or a winder.
- a more complex solution would be to assemble a hook on one end of the cable (8) that allows the chair to be anchored, or even a cable system for launching said cable (8).
- the extension (5) comprises stirrups (9) for fastening the user's feet, and, likewise, it can have a fastener for the knees. It is thus guaranteed that there will be no uncontrolled motions of the lower body.
- the chair in the figures comprises a handhold (10) on its back to enable a person accompanying the user to help the latter at certain times. On the one hand, it allows helping the chair to be placed at the starting position and, on the other, it will allow to offset or stop the overturning of the chair. This function is also performed by the handle (6) on the opposite end of the chair. A handle (11) on the rear portion helps the chair to be moved and orientated to the starting position.
- the chair shall be assemblable by the user or their companions, it being able to be provided as a Meccano-type construction kit, with parts in a case, and with spare replacement parts.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Motorcycle And Bicycle Frame (AREA)
- Handcart (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Road Paving Structures (AREA)
- Cultivation Of Seaweed (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
a seat (1) carried by a series of wheels (2, 3, 4), two inclined rear wheels (4) being disposed behind the seat (1) and converging at their upper rear part; and a front longitudinal extension (5) that supports a handle (6) fixed in a position facing the seat (1) and a front wheel (3) with idle rotation disposed in front of the seat.
Description
- The present invention refers to a wheelchair for travelling on nigh-impassable paths, e.g. those encountered when mountaineering. Therefore, it can be used by persons with reduced mobility in their lower body due to them being affected by either paralysis of their lower extremities, a loss of a limb, or injuries of any kind.
- It is applicable in the field of adaptive sports, on paths which a regular wheelchair or any other type of adapted vehicle cannot navigate, to make it easier for them to move about and play sports or enjoy leisure activities in nature.
- People with any kind of injury to their lower body, especially if its severity forces them to use a wheelchair, are restricted in their movements to those places where the chair can go through. However, the appearance of different types of sport adapted to disabled people has exponentially increased their chances. There are now on the market high-performance chairs for short and long races, for long distances and so on, on both flat and paved surfaces. Nevertheless, there are no chairs that make it easy to move around in natural environments, slopes, mountains or jungles, or in snow, with steep slopes, and rocky or stony terrain; those that exist are still limited by the need to have a path with the width, ground firmness and slope conditions that allows them to move upwards.
- If the sportsperson wants to do any type of climbing or take any type of path that does not meet the conditions, they need a wheelchair that can be used on nigh-impassable paths and has aids that allow it to move under its own power or, maybe, with the minimum assistance in preparing the path.
- The applicant does not know of any wheelchair similar to that of the invention, that allows travelling on almost any path (including those which are rocky and with steep slopes) and is tailored to people with mobility issues. In other words, that is independent of the slope and the conditions of the surface.
- The invention consists in a wheelchair that can be used on nigh-impassable paths, such as those encountered when mountaineering, as claimed. It allows moving forward in a sloping situation and is mainly intended for people with reduced mobility in their lower body.
- The chair is intended to be used in very narrow paths, with steep slopes (up to 60%) or a lot of rocks. This type of path is not accessible to or passable by other types of wheelchair or "handcycles." Thus, the chair of the invention increases the autonomy of people with reduced mobility.
- The chair has a seat carried by a series of wheels, as usual, but these wheels are disposed in a different way. It is provided with two tilted rear wheels, disposed behind the seat, and converging on its rear upper portion. In other words, they are not parallel, and their closest point is at the rear upper area of the wheels so that it can travel on very narrow paths and act as the point of support when climbing between rocks and boulders. In addition, in front of the seat there is a longitudinal front extension that supports a front idler wheel. Thus, the chair rests on three points and is highly stable. Given that the front wheel idles, it shall preferably be of small size so that it does not distort the support area of the whole too much
- The extension also has a fixed handle in a seat-facing position that can be used to incorporate optional complements such as headlamps (longitudinal and/or transverse), tilt sensors, water bottles, brake push buttons for the front wheel, and so on.
- In a preferred embodiment, the chair also has a push wheel on each side of the seat, generally parallel, for propelling oneself, and preferably detachable. More preferably, its lower portion shall be on a lower plane in relation to the rear wheels.
- The extension preferably supports stirrups for fastening the user's feet.
- In a more preferred embodiment, the extension supports a coupling for a cable, a rope or the like to allow the user to move forward in difficult terrain using climbing-like techniques without having to use the traditional push wheels. The cable can be wound up on a drum or winder.
- Other variants will be discussed in other places hereof.
- A series of figures are presented to facilitate understanding the invention:
-
Figure 1 is a schematic side view of an embodiment example. -
Figure 2 is a top view of the schematic of a second embodiment example. - An embodiment of the invention is briefly described below as an illustrative, non limiting example of the latter.
- The chair of the embodiment shown in the figures comprises a seat (1), preferably narrow and with a safety harness or belt, carried by a series of wheels (2, 3, 4), which fall into various types:
- Two push wheels (2), generally parallel and approximately vertical, disposed on both sides of the seat (1). They correspond to the wheels of traditional wheelchairs for self-propulsion. Ideally they shall be detachable so as to be able to reduce the effective width of the chair.
- A front wheel (3), disposed in front of the seat (1), on a front extension (5). This front wheel (3) shall preferably idle on a vertical axis so as to be able to orientate itself in any direction. An orientation-angle limiter may be included to lock the front wheel (5) in position or to limit the possible orientations down to a precise angle.
- Two tilted rear wheels (4) disposed behind the seat (1). The rear wheels (4) have a dual tilt so as to converge towards its rear upper portion. In other words, on the one hand, they converge at its upper portion (the upper area of both rear wheels (4) is closer to the longitudinal axis of the chair than the lower portion) and, on the other, they converge at its rear portion (the rear end of the horizontal diameter of the rear wheels (4) is closer to the longitudinal axis of the chair that the front end).
- The rear wheels (4) shall be more elevated than the push wheels (2) so that they only touch the ground if the chair tilts backwards or if the push wheels (2) have been detached. Thus, in the second situation they shall lower the centre of gravity of the whole to increase the stability. If desired, the rear wheels (4), or any other wheel (2, 3) or shaft, will have suspension or shock-absorbing equipment.
- The extension (5) of this embodiment can be seen particularly well in
Figure 1 . It consists in a horizontal profile joined to the lower portion of the seat (1) and the front wheel (3). A fixed handle (6), which shall be disposed in a position that is easy to reach by the user of the chair, emerges from the profile. It can be used by the person with reduced mobility to rest their arms on and adopt a comfortable posture. - A tilt sensor (gyroscope, accelerometer, bubble level...) allowing the user to know the tilt of the chair on the longitudinal and transverse axes and hence the risk of overturning can be situated on this handle (6). A brake, with a Bowden cable, for the front wheel (3) or for the push wheels (2) can also be placed thereon. The chair can have a 360° camera built in for recording and studying the terrain, a GPS and a pivoting compass, as well as a parasol, backup electric motors (preferably on the push wheels (2)), batteries, and a solar panel for recharging the latter.
- The chair has, e.g. on the handle (6) or before it, a coupling (7) for a cable (8) or the like that allows the chair to be anchored to a fixed point. A safety rope or lifeline like those used for climbing can thus be installed. Indeed, this cable (8) allows the user of the chair to haul themselves up by pulling or winding it up. The winding-up can be done on a drum with two handles for manual turning or on a motor-driven drum, by hauling oneself up or by means of the "rope and fist" climbing technique. If the cable (8) is not wound up on that point, a winding system can be installed behind the seat, or at its height. This winding system can be a drum with a loosely coiled spring that winds up the slack cable (8) or a winder.
- A more complex solution would be to assemble a hook on one end of the cable (8) that allows the chair to be anchored, or even a cable system for launching said cable (8).
- It can be seen in the figures that the extension (5) comprises stirrups (9) for fastening the user's feet, and, likewise, it can have a fastener for the knees. It is thus guaranteed that there will be no uncontrolled motions of the lower body.
- The chair in the figures comprises a handhold (10) on its back to enable a person accompanying the user to help the latter at certain times. On the one hand, it allows helping the chair to be placed at the starting position and, on the other, it will allow to offset or stop the overturning of the chair. This function is also performed by the handle (6) on the opposite end of the chair. A handle (11) on the rear portion helps the chair to be moved and orientated to the starting position.
- It is advisable to reduce the weight of the chair to the maximum, so the parts shall be reduced to the maximum and light materials chosen.
- The chair shall be assemblable by the user or their companions, it being able to be provided as a Meccano-type construction kit, with parts in a case, and with spare replacement parts.
Claims (10)
- A wheelchair for nigh-impassable paths, such as those encountered when mountaineering and practising mountain climbing or climbing, which has a seat (1) carried by a series of wheels (2, 3, 4), characterized in that it has:Two tilted rear wheels (4), disposed behind the seat (1), and converging on its rear upper portion;a longitudinal front extension (5) that supports:a handle (6) fixed in a position facing the seat (1)a front wheel (3) disposed in front of the seat and which idles; anda push wheel (2) on each side of the seat (1) for self-propulsion.
- The wheelchair according to claim 1, characterized in that its push wheels (2) are detachable.
- The wheelchair according to claim 1, characterized in that its push wheels (2) are on a lower plane in relation to the rear wheels (4).
- The wheelchair according to claim 1, characterized in that its extension (5) supports stirrups (9) for fastening the user's feet.
- The wheelchair according to claim 1, characterized in that its handle (6) has a longitudinal- and transverse-tilt sensor.
- The wheelchair according to claim 1, characterized in that its front wheel (3) has an orientation-angle limiter.
- The wheelchair according to claim 1, characterized in that its handle (6) comprises a brake of the front wheel (3).
- The wheelchair according to claim 1, characterized in that its extension (5) supports a coupling (7) for a cable (8) or the like.
- The wheelchair according to claim 8, characterized in that it comprises a drum or winder for winding up the cable (8) or the like.
- The wheelchair according to claim 1, characterized in that it comprises a handhold (10) behind the seat (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201831089U ES1217179Y (en) | 2018-07-11 | 2018-07-11 | WHEELCHAIR FOR DIFFICULT ROADS |
PCT/ES2019/070488 WO2020012054A1 (en) | 2018-07-11 | 2019-07-11 | Wheelchair for difficult paths |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3821864A1 true EP3821864A1 (en) | 2021-05-19 |
EP3821864A4 EP3821864A4 (en) | 2022-04-20 |
EP3821864B1 EP3821864B1 (en) | 2023-02-01 |
Family
ID=63444053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19834904.5A Active EP3821864B1 (en) | 2018-07-11 | 2019-07-11 | Wheelchair for difficult paths |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3821864B1 (en) |
ES (2) | ES1217179Y (en) |
WO (1) | WO2020012054A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5421598A (en) * | 1991-04-26 | 1995-06-06 | Everest & Jennings International, Ltd. | Modular wheelchair |
US5573260A (en) * | 1993-10-12 | 1996-11-12 | Invacare Corporation | Sport wheelchair having a T-frame |
US5605345A (en) * | 1993-10-21 | 1997-02-25 | Brookefield Hunter Incorporated | Wheeled apparatus for use as walker and wheelchair |
US5624128A (en) * | 1995-03-06 | 1997-04-29 | Owens; Jesse L. | Transport system for disabled people |
KR101598481B1 (en) * | 2014-06-23 | 2016-03-02 | 한국생산기술연구원 | Driving Auxiliary Device Having Separable the Mounting Frame Unit |
-
2018
- 2018-07-11 ES ES201831089U patent/ES1217179Y/en active Active
-
2019
- 2019-07-11 EP EP19834904.5A patent/EP3821864B1/en active Active
- 2019-07-11 WO PCT/ES2019/070488 patent/WO2020012054A1/en unknown
- 2019-07-11 ES ES19834904T patent/ES2944595T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3821864A4 (en) | 2022-04-20 |
EP3821864B1 (en) | 2023-02-01 |
ES1217179Y (en) | 2018-12-03 |
WO2020012054A1 (en) | 2020-01-16 |
ES1217179U (en) | 2018-09-12 |
ES2944595T3 (en) | 2023-06-22 |
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