AU4062099A - Creación de Inventos y Patentes con Inteligencia Artificial

AU4062099A – Desk
– Google Patents

AU4062099A – Desk
– Google Patents
Desk

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Info

Publication number
AU4062099A

AU4062099A
AU40620/99A
AU4062099A
AU4062099A
AU 4062099 A
AU4062099 A
AU 4062099A
AU 40620/99 A
AU40620/99 A
AU 40620/99A
AU 4062099 A
AU4062099 A
AU 4062099A
AU 4062099 A
AU4062099 A
AU 4062099A
Authority
AU
Australia
Prior art keywords
support post
desk
leg support
top plate
grounding
Prior art date
1998-06-16
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

Application number
AU40620/99A
Other versions

AU742331B2
(en

Inventor
Fritz Frenkler
Justus Kolberg
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.)

Kokuyo Co Ltd

Original Assignee
Kokuyo Co Ltd
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.)
1998-06-16
Filing date
1999-06-14
Publication date
2000-01-05

1999-06-14
Application filed by Kokuyo Co Ltd
filed
Critical
Kokuyo Co Ltd

2000-01-05
Publication of AU4062099A
publication
Critical
patent/AU4062099A/en

2001-12-20
Application granted
granted
Critical

2001-12-20
Publication of AU742331B2
publication
Critical
patent/AU742331B2/en

2019-06-14
Anticipated expiration
legal-status
Critical

Status
Ceased
legal-status
Critical
Current

Links

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Classifications

A—HUMAN NECESSITIES

A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL

A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE

A47B9/00—Tables with tops of variable height

A—HUMAN NECESSITIES

A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL

A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE

A47B9/00—Tables with tops of variable height

A47B9/20—Telescopic guides

Description

SPECIFICATIONS DESK FIELD OF THE ART This invention relates to a desk and, more 5 particularly, to a desk which is preferably used in offices or at home. BACKGROUND ART Desks are generally standardized at a height of a top plate to a certain degree. However, if several different 10 standards exist or the standard varies in countries, a desk having a different specification has to be made according to the standard. In addition, a learning desk for children has to be changed in a height of a top plate in accordance with a growth degree of a child. However, it is a waste if 15 the desk is traded for a new one every time the child grows. Under these circumstances, a desk wherein a height of a top plate can be changed by means of a height adjust mechanism has been developed and is in use presently. 20 Generally, in an ordinary desk, adjusters are provided at a plurality of positions where each of a bottom end of the legs is supported and level adjustment by means of the adjusters makes it possible to cooperate with an uneven floor on which the desk is placed. In the above-mentioned 25 desk, an adjuster adjust mechanism and a height adjust mechanism are separately incorporated into the desk. This increases a number of components and processing steps and it would become a factor which hinders a promotion of 2 lowering cost and weight or of simplifying an arrangement of the desk. DISCLOSURE OF THE INVENTION In order to solve the above-mentioned problems, 5 attention is paid to a point that both an adjuster adjust mechanism and a top plate height adjust mechanism are done by an operation of up and down. From the above viewpoint, these functions are carried out by a common mechanism in the desk of the invention. 10 More specifically, the desk in accordance with the invention is characterized by that a height of a top plate can be changed through a height adjust mechanism within a predetermined range which is larger than a level adjust amount by means of an ordinary adjuster wherein the top 15 plate is supported by a plurality of expansible leg support posts, and the height adjust mechanism makes use of the leg support posts and can adjust an expansile amount of the leg support posts individually within the predetermined range through a little larger than the predetermined range. In 20 the above case, the range within the predetermined range through a little larger than the predetermined range means both a range within the predetermined range and a range within a little larger than the predetermined range. The leg support post may comprise a support post 25 member and a grounding member which is arranged at the lower end of the support post member and which can protrude or recede, and the height adjust mechanism may be provided with a fixing member which fixes the grounding member to 3 the support post member at a predetermined position. To obtain an improved operationability and stability with a simple arrangement, it is effective if the leg support post comprises a support post member and a 5 grounding member which is arranged at the lower end of the support post and which can protrude or recede, and the height adjust mechanism comprises a screw means which helically connects the support post member and the grounding member with allowing the support post member to 10 make an up and down movement. More concretely, it is effective if the screw means comprises a nut member which is mounted on the support post member unrotatably and a screw shaft which projects upward over the grounding member and the projecting side is 15 helically connected with the nut member. It is preferable that the grounding member is provided with a handling portion which is to allow the screw shaft to screw up and down relative to the nut member. To improve appearance regardless of a position at 20 which the leg support post is adjusted, it is preferable that a cover is mounted on the support post member with the upper end thereof allowed to make a sliding movement up and down and the cover is so arranged that a lower end thereof covers the grounding member and the handling portion. 25 In the above case, to secure an improved operationability, it is effective if a movable position which alternatively exposes the handling portion is provided at a part of an underside of the cover.
4 As described above, the desk in accordance with the invention has an arrangement in which the top plate is supported by a plurality of expansible leg support posts and the height adjust mechanism makes use of the leg 5 support posts and can adjust an expansile amount of the leg support posts individually within the predetermined range through a little larger than the predetermined range. In accordance with the arrangement, when each of the leg support posts is adjusted to change substantially the 10 same amount by operating the height adjust mechanism, the height of the top plate is also changed within the predetermined range in accordance with the adjusted amount. When several of the leg support posts are adjusted to change just a little, the level of the adjusted leg support 15 posts only is changed, thereby to be able to cope with an uneven floor. As mentioned above, the height adjust mechanism carries out a function to adjust not only the height of the top plate but also the level of each leg support posts. 20 Therefore, the cost and the weight of the desk can be reduced due to a common component used for different objects, and appearance of the desk can also be kept in a good looking condition. In addition, with the adjustment applied, it becomes possible to effectively adjust the top 25 plate so as to be horizontal when placed on a steeply inclined floor. As a result, it becomes possible for the height adjust mechanism to carry out a function not only to adjust the Ts 5 height of the top plate but also to adjust a level of every leg support post individually and it can effectively conduct adjustment to an inclined floor. If the leg support post comprises a support post 5 member and a grounding member and the height adjust mechanism is provided with a fixing member which fixes the grounding member to the support post member at a predetermined position, the leg support post can be expansible with a simple arrangement and stability can also 10 be secured. Especially, if the leg support post comprises a support post member and a grounding member and the support post member and the grounding member are connected by a screw means which comprises a nut member and a screw shaft, 15 an improved operationability and stability can be obtained with a simple arrangement. In addition, since the leg -support post can be kept in an adjusted position by itself when expansile amount is adjusted, there is no need of other fixing operation and fixing members. 20 If the grounding member is provided with a handling portion which gives a force to operate the screw means, the handling portion and the grounding member can be made integrally, resulting in a merit in a processing step. If a cover is mounted on the support post member with 25 the upper end thereof allowed to make a sliding movement up and down and the cover is so arranged that a lower end thereof covers the grounding member and the handling portion, appearance of the leg support post can be kept in 5k 9 6 a good looking condition no matter what position the leg support post is adjusted. In this case, if a movable member which alternatively exposes the handling portion to a side of the cover is 5 mounted on the lower end of the cover, there is no need to move the cover so as to slide every time the handling portion is handled, thereby to simplify the operation of adjusting a level of the leg support post. BRIEF DESCRIPTION OF THE DRAWINGS 10 Fig. 1 is an overall perspective view showing one embodiment of the invention. Fig. 2 is a partially cut out perspective view of the embodiment. Fig. 3 is an exploded perspective view of a leg 15 support post of the embodiment. Fig. 4 is an elevational cross sectional view of the leg support post. Fig. 5 is an explanatory view corresponding to Fig. 4. BEST MODES OF EMBODYING THE INVENTION 20 The invention will be described in detail with reference to an embodiment thereof shown in the accompanying drawings. The desk has an arrangement, as shown in Figs. 1 through 4, in which each of four leg support posts 1 is 25 connected at the upper end thereof through a frame 2 and a top plate 3 is supported by the frame 2. Each of the leg support posts 1 is of a square pipe and arranged at four corners or near the corners of the 7 rectangular top plate 3 with an upper end of the leg support post 1 facing to an underside of the top plate 3. The frame 2 comprises a pair of right and left frame members 21 which connect the front and back leg support 5 posts 1 along a direction of depth at adjacent the top end of the inner surfaces which face each other, a front frame member 22 which connects the right and left leg support posts 1 arranged front side along a direction of width at adjacent the top end of the inner surfaces which face each 10 other, and reinforcing frame member 23 which connects the right and left frame members 21 at a little front of the center of the inner surfaces which face each other. This frame 2 constitutes a self standing structure together with each of the leg support posts 1 by prohibiting each other 15 from being apart. Each of the right and left frame members 21 and the front frame member 22 is made of a common extruded form of a material having rigidity such as aluminum which is cut in a required length and is provided with a rail groove 21a, 22a which opens at one side facing 20 inward of tle frame members 21, 22. The reinforcing frame member 23 also is made of substantially the same extruded form of a material having rigidity such as aluminum which is cut in a required length and is provided with an opening as a rail groove 23a which opens at both sides of the 25 reinforcing frame member 23. In this embodiment, brackets 4 each having a face 4a to support the top plate 3 are mounted on the right and left frame members 21 at two positions thereof, namely back 8 and front of the right and left frame members 21 by making use of the above mentioned rail groove 21a and another bracket 4 having a face 4a to support the top plate 3 is mounted on the reinforcing frame member 23 at the center 5 thereof by making use of the rail groove 23a. Then the top plate 3 is placed on the faces 4a of the above-mentioned five brackets 4 and fixed thereto by means of a screw from underside of the top plate 3. The top late 3 has an arrangement in which a plurality of materials for a top 10 plate are overlapped along a direction of depth so as to show a grain of wood along a direction of width. With this arrangement, the top plate 3 produces a high strength against a load which is applied by placing something even if the top plate 3 is supported by the brackets 4 at only 15 four corners and the center thereof. With the above arrangement, in this embodiment, the top plate 3 is so arranged that the height can be varied, for example, within a predetermined range of approximately 80 mm through the height adjust mechanism 5. 20 In the height adjust mechanism 5, for making use of the leg support posts 1 as a construction element, the leg support posts 1 have an arrangement in which a support post member 11 and a grounding member 12 are expansibly connected to each other and an expansile amount of each leg 25 support posts 1 can be adjusted individually within the above-mentioned predetermined range through a little larger than the range by means of a screw means 6. More specifically, the support post member 11 is made Kf Q 9 of a material having rigidity such as aluminum which is extruded into a square pipe. On the bottom end of the leg support posts 11 a nut member 61 having a threaded hole 61a at the center thereof is mounted with a part of the nut 5 member 61 inserted thereinto so as to restrict the nut member 61 from being rotated. In the grounding member 12, a bottom end thereof forms a grounding area 12a and a side area 12b serves as a handling portion which has a shape of a nut with which a 10 wrench is to be engaged from a side direction. And a screw shaft 62 projects upward from the upper face of the handling portion 12b. The screw means 6 comprises the threaded hole 61a and the screw shaft 62 and has an arrangement in which a projecting side of the screw shaft 15 62 is helically connected to the threaded hole 61a of the nut member 61. An effective range of the screw means 6 in which the screw shaft 62 is prevented from being out of joint of the threaded hole 61a is set at least a little larger than the above-mentioned 80 mm. 20 Further, in this embodiment, a rectangle pipe cover 14 which is a little larger than the support post member 11 made of resin or something like that is arranged so that the upper end of the cover 14 fits over the support post member 11. On the inner face of the upper end of the cover 25 14 mounted is a close member 14a which closes a clearance between the support post member 11 and the cover 14. The cover 14 is arranged with an inner face 14b thereof affixed to an outer face 61b of the nut member 61. Then the cover -o4 10 14 is affixed to two points, namely the outer face 11a of the support post member 11 and the outer face 61b of the nut member 61 through the close member 14a so as to make a sliding movement up and down without being loosened. The 5 cover 14 is kept in a condition so as not to be apart from the support post member 11 because the close member 14a is kept in a tight contact with the cover 14 and the support post member 11 if no force is applied thereto. The cover 14 is so arranged that a lower end thereof covers the 10 grounding member 12. A movable member 15 which alternatively exposes the handling portion 12b to a side of the cover 14 is mounted on the lower end of the cover 14 through a limit member 16. The movable member 15 is provided with an engaging claw 15 15 which faces outward at the upper end thereof and a hollow portion 15b which covers the grounding member 12 at the lower end thereof. The limit member 16 is provided with a clearance 16a which engages the engaging claw 15 with the lower end thereof so as to allow the engaging claw 15 to 20 make an up and down movement and which restrains the up and down movement of the engaging claw 15 within a given range. The movable member 15 can be moved within the given range so as to alternatively expose or cover the side of the handling portion 12b. In the limit member 16, the upper 25 face 16c serves as a role to set a limit on the lowest position of the nut member 61 and a through hole 16b through which the screw shaft 62 is to be passed is provided at the center of the limit member 16. I RAjj; 11 Next a method to deal with this embodiment will be explained. First, lift up the movable member 15 as shown in Fig. 5 from a condition shown in Fig. 4 so as to expose a side of the handling portion 12b. Next, engage a wrench 5 which is not shown in drawings with the handling portion 12b and rotate the screw shaft 62 to a predetermined direction so as to move the nut member 61 along an axial direction of the screw shaft 62. Then an amount of the grounding member 12 projecting from the support post member 10 11, namely, an expansile amount L of the leg support post 1 as a whole can be adjusted within a range as far as the nut member 61 engages with the screw shaft 62. With the same manner applied to all of the other leg support posts 1, the height of the top plate 3 can be changed within a range, 15 for example, 680 mm to 760 mm. It is a matter of course the above operation can be done with the desk placed upside down and lower end of the leg support posts 1 protruded upwardly. In case the top plate 3 is not stably placed 20 horizontally due to an error of adjustment or unevenness of the floor F even if the desk is placed on a floor F with the grounding area 12a of the leg support post 1 being grounded after the height of the top plate 3 is adjusted, adjust only the required leg support post 1 in the same 25 manner as in the case of the above so as to move the grounding member 12 a very slight amount with a wrench applied to the handling portion 12b of the required leg support post 1. Then the height of each leg support posts 12 1 can be adjusted individually. As mentioned above, in this embodiment, the height adjust mechanism 5 which makes use of expansion and contraction of the leg support post 1 carries out a 5 function to adjust not only the height of the top plate 3 but also the level of each leg support posts 1. Therefore, the number of components and the number of working steps required for manufacture and assembly is greatly reduced as compared with conventional desks in which these functions 10 are carried out by different mechanisms, thereby to reduce the cost and the weight of the desk as a whole and to simplify the arrangement of the desk. In addition, with applying the adjustment, if, for example, one pair of the two pairs of the leg support posts 15 1 which support two sides of the top plate 3 facing each other are adjusted to have the same expansible amount and the other pair are adjusted differently, the top plate 3 can be adjusted so as to be horizontal when placed on a steeply inclined floor F. Further, since these functions 20 accompany to the leg support post 1 alone, in other words, do not accompany to the top plate 3 or the like, an arrangement of the top plate 3 can be simplified and this makes it possible to prevent the space under the desk from being unreasonably reduced and to improve the appearance of 25 the leg support post 1. Especially, in this embodiment, since the leg support post 1 comprises the support post member 11 and the grounding member 12 which is arranged at the lower end of 3-~PL 13 the support post member 11 and which can protrude or recede, and the height adjust mechanism 5 comprises the screw means 6 which helically connects the support post member 11 to the grounding member 12 with allowing the 5 support post member 12 to make an up and down movement, a stable and smooth movement can be obtained with an extremely easy operation and the grounding member 12 can be securely kept at a desired position by making use of the self-lock mechanism of the screw means 6 without any other 10 fixing members. Since the screw means 6 basically comprises the nut member 61 which is mounted on the support post member 11 unrotatably and the screw shaft 2 which projects upward over the grounding member 12 and the projecting side is 15 helically connected with the nut member 61, required function can effectively be obtained with the least required number of components. In this case, since the handling portion 12b for rotating the screw shaft 62 is formed in the side of the grounding member 12, a common 20 component can be shared, and since the handling portion 12b can be operated just near the grounding member 12, it becomes easy to operate the handling portion 12b. Further, in this embodiment, the cover 14 is attached to the support post member 11 with an upper end thereof 25 allowed to make a sliding movement up and down, and the lower end of the cover 14 always covers the grounding member 12, even if the leg support post 11 is expanded, for example, as shown in Figs.. 4 and 5, resulting in keeping an 14 appearance of the leg support post 1 in a good looking condition. In this case, since the movable member 15 which alternatively exposes the handling portion 14b to the 5 outside of the cover 14 is provided at the lower end of the cover 14, there is no need of moving the cover 14 so as to slide every time the handling portion 14b is handled, thereby to simplify the operation of adjusting a level of the leg support post 1. 10 The component parts are not limited to the illustrated constructions, but there may be various modifications and changes without departing from the scope of the invention. For example, this does not exclude an arrangement in which a fixing member such as a screw fixes the support post to 15 the grounding member which constitutes the leg support post at a predetermined position. The above-mentioned position is just one embodiment of the invention, and it is needless to say that the adjustable amount of the top plate or the level can be set at any amount tailored to an object or a 20 usage of the desk. Further, the desk described in this specification also includes a concept of, so to speak, a table. POSSIBLE APPLICATIONS IN INDUSTRY As mentioned above, the desk in accordance with the 25 invention is used when it is needed that a height of the top plate be changed according to a user’s requirement, especially preferably used for a learning desk for children which is required to change a height of the top plate’ rR4- 15 according to a growing rate of the child. The desk is also preferably used in a case a floor on which the desk is to be placed is steeply inclined. 5 10 15 20 25

Claims (7)

1. A desk in which a height of a top plate can be varied within a predetermined range through a height adjust mechanism, 5 and characterized by that said top plate is supported by a plurality of expansible leg support posts, and said height adjust mechanism makes use of said leg support posts and can adjust an expansile amount of said leg 10 support posts individually within said predetermined range through a little larger than said predetermined range.

2. The desk, described in claim 1 and characterized by that said leg support post comprises a support post member 15 and a grounding member which is arranged at the lower end of the support post member with allowing a movement to protrude or recede, said height adjust mechanism is provided with a fixing member which fixes said grounding member to the support 20 post member at a predetermined position.

3. The desk, described in claim 1 and characterized by that said leg support post comprises a support post member and a grounding member which is arranged at the lower end 25 of the support post with allowing a movement to protrude or recede, the height adjust mechanism comprises a screw means which helically connects said support post member and said 17 grounding member with allowing to make an up and down movement.

4. The desk, described in claim 3 and characterized by 5 that said screw means comprises a nut member which is mounted on the support post member unrotatably and a screw shaft which projects upward over the grounding member and the projecting side is helically connected with said nut member. 10

5. The desk, described in claim 4 and characterized by that said grounding member is provided with a handling portion which is to allow said screw shaft to screw up and down relative to said nut member. 15

6. The desk, described in claim 5 and characterized by that a cover is mounted on said support post member with the upper end thereof allowed to make a sliding movement up and down and said cover is so arranged that a lower end 20 thereof covers said grounding member and said handling portion.

7. The desk, described in claim 6 and characterized by that a movable position which alternatively exposes the 25 handling portion is provided at a part of an underside of the cover.

AU40620/99A
1998-06-16
1999-06-14
Desk

Ceased

AU742331B2
(en)

Applications Claiming Priority (3)

Application Number
Priority Date
Filing Date
Title

JP10-168966

1998-06-16

JP16896698A

JP3528605B2
(en)

1998-06-16
1998-06-16

desk

PCT/JP1999/003169

WO1999065361A1
(en)

1998-06-16
1999-06-14
Desk

Publications (2)

Publication Number
Publication Date

AU4062099A
true

AU4062099A
(en)

2000-01-05

AU742331B2

AU742331B2
(en)

2001-12-20

Family
ID=15877881
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

AU40620/99A
Ceased

AU742331B2
(en)

1998-06-16
1999-06-14
Desk

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Country
Link

US
(1)

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EP
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JP
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AU
(1)

AU742331B2
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DE
(1)

DE69917202T2
(en)

NZ
(1)

NZ502755A
(en)

WO
(1)

WO1999065361A1
(en)

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Priority date
Publication date
Assignee
Title

US1125668A
(en)

1913-05-31
1915-01-19
William L Deming
Adjustable supporting device.

US2819134A
(en)

1956-02-04
1958-01-07
Klevholm Karl Eric
Hoisting and lowering devices for boards or plates

US2885181A
(en)

1956-08-13
1959-05-05
Sperry Rand Corp
Support-jack

US3045389A
(en)

1960-03-02
1962-07-24
Garcy Corp
Leveling device for standards

US3117392A
(en)

1961-12-29
1964-01-14
Bela B Junkunc
Self-leveling devices

US3104493A
(en)

1962-06-18
1963-09-24
Charles R Nalle
Furniture support element

US3595180A
(en)

1969-02-10
1971-07-27
Module Computer Corp
Adjustable height device for data processing equipment

US3908565A
(en)

1973-12-26
1975-09-30
John W Burnett
Transportable overbed table

JPH085243A
(en)

1994-06-20
1996-01-12
Kawasaki Heavy Ind Ltd
Heat exchanging device for powder particles

DE4437391C2
(en)

1994-10-19
1996-10-02
Dyes Bueromoebelwerk

Office table with a height adjustment device

US5588624A
(en)

1995-04-05
1996-12-31
Woodham; Annie R.
Table leg extension

DE29508298U1
(en)

1995-05-19
1995-08-10
Haefele Gmbh & Co

Height adjustment device for furniture, especially tables

JP3579855B2
(en)

1997-01-31
2004-10-20
株式会社岡村製作所

Table lifting equipment

1998

1998-06-16
JP
JP16896698A
patent/JP3528605B2/en
not_active
Expired – Lifetime

1999

1999-06-14
US
US09/485,584
patent/US6327985B1/en
not_active
Expired – Fee Related

1999-06-14
EP
EP99924023A
patent/EP1021972B1/en
not_active
Expired – Lifetime

1999-06-14
NZ
NZ502755A
patent/NZ502755A/en
unknown

1999-06-14
AU
AU40620/99A
patent/AU742331B2/en
not_active
Ceased

1999-06-14
WO
PCT/JP1999/003169
patent/WO1999065361A1/en
active
IP Right Grant

1999-06-14
DE
DE69917202T
patent/DE69917202T2/en
not_active
Expired – Lifetime

Also Published As

Publication number
Publication date

NZ502755A
(en)

2002-10-25

JP2000000121A
(en)

2000-01-07

US6327985B1
(en)

2001-12-11

EP1021972B1
(en)

2004-05-12

WO1999065361A1
(en)

1999-12-23

AU742331B2
(en)

2001-12-20

EP1021972A1
(en)

2000-07-26

DE69917202D1
(en)

2004-06-17

EP1021972A4
(en)

2001-07-18

DE69917202T2
(en)

2005-09-08

JP3528605B2
(en)

2004-05-17

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