EP0209955A2 - Individueller Klappsitz und davon hergestellter vielfacher Sitz - Google Patents

Individueller Klappsitz und davon hergestellter vielfacher Sitz Download PDF

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Publication number
EP0209955A2
EP0209955A2 EP86201285A EP86201285A EP0209955A2 EP 0209955 A2 EP0209955 A2 EP 0209955A2 EP 86201285 A EP86201285 A EP 86201285A EP 86201285 A EP86201285 A EP 86201285A EP 0209955 A2 EP0209955 A2 EP 0209955A2
Authority
EP
European Patent Office
Prior art keywords
seat
bar
bars
folding
uprights
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
Application number
EP86201285A
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English (en)
French (fr)
Other versions
EP0209955B1 (de
EP0209955A3 (en
Inventor
Jean Balencon
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0209955A2 publication Critical patent/EP0209955A2/de
Publication of EP0209955A3 publication Critical patent/EP0209955A3/fr
Application granted granted Critical
Publication of EP0209955B1 publication Critical patent/EP0209955B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/28—Folding chairs with flexible coverings for the seat or back elements
    • A47C4/283—Folding chairs with flexible coverings for the seat or back elements foldable side to side only
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/12—Theatre, auditorium, or similar chairs

Definitions

  • the invention relates to an individual folding seat of the type comprising a backrest and a seat, both made of flexible fabric, and a system of cross-pieces allowing the folding of the seat. It extends to a multiple seat produced by repeating the basic structure of this individual seat.
  • folding cross seats which can be developed from a folded position where the seat elements are placed against one another in a plane to an unfolded position allowing their use.
  • Some seats have three sets which can be folded down in three operations: the crossbars which carry the seat, armrests which are articulated on the latter so as to be able to fold down externally and an articulated backrest on these armrests so as to be able to fold down forwards.
  • the crossbars which carry the seat
  • armrests which are articulated on the latter so as to be able to fold down externally
  • an articulated backrest on these armrests so as to be able to fold down forwards.
  • seats have a more practical folding which is carried out in one or two operations.
  • These seats include, on each side, a fixed side frame, the upper part of which forms an armrest; the seat is carried by crosspieces and can slide vertically along the frames until it comes to the folded state near the armrests; the backrest is fixed to the mounts above the armrests either in the fixed position or in the foldable position.
  • the backrest is generally articulated in the upper part of the armrests and has poor stability (for example: patents n ° 1 165 923, 1 135 101, 1 073 121, 1 035 861 ...); in certain seats, this backrest is fixed along an upper extension of the side mounts but, in this case, its height above the seat is further increased (for example patent n ° 1 144 746).
  • the present invention proposes to modify and improve the kinematics of folding the seats mentioned above, in order to eliminate their drawbacks.
  • An object of the invention is to provide an individual folding seat with armrests, which has good qualities of comfort, its armrests and its backrest which can be arranged without difficulty at ideal height above the seat.
  • Another object of the invention is to provide a robust seat with good overall rigidity and good stability, which retains its assembly accuracy over time and benefits from very economical manufacturing.
  • Another objective is to provide an easy-maintenance seat, which allows easy removal of the seat or back fabrics for cleaning, without having to completely disassemble the seat.
  • Another objective is to considerably increase the ease of folding the seat.
  • Another objective is to improve its aesthetic character.
  • the invention also proposes to provide a folding multiple seat which benefits from most of the qualities and advantages of the individual seat.
  • the seat of the invention it is the armrest / seat assembly which is moved in one piece along the rear uprights when the seat is folded; the armrests come in the folded state to position themselves at the front and opposite the backrest.
  • the backrest can be fixed in a stable position and at an ideal height along the upper sections of the rear uprights.
  • the rear uprights and rear returns of armrests are arranged so that in the folded position after sliding upwards, the rear returns come to be arranged facing the upper sections of uprights rear carrying the flexible backrest, with a spacing allowing passage and fixing of said backrest along said upper sections of the uprights.
  • each rear upright comprises two tubular elements arranged parallel one behind the other; the lower front element cooperates with a downward extension of the seat / armrest assembly to act as sliding means of the telescopic type, while the upper rear element is detachably fixed, in particular by means of maneuverable snap in a welded sleeve at the rear and upper part of the front element (this upper rear element carrying the flexible backrest in the upper part).
  • the seat according to the invention can receive various embodiments. It may include a single spider or two front and rear spiders, which is or are adapted to support the load in the absence of front uprights. The rear uprights then essentially serve as sliding means.
  • the seat can also include front uprights which support the load or a part of it with the rear uprights and act as additional sliding means during folding.
  • the single cross-bar or the cross-bars of the seat are connected to the mobile seat / armrest assemblies by means of two additional bars, situated respectively under one and the other of the seat bars and each integral of the corresponding mobile seat / armrest assembly.
  • the seat bars no longer carry the crossbars and serve only to support the seat fabric which can be much more easily removed.
  • it becomes possible to provide any number of cross braces since the seat fabric no longer constitutes a nuisance in order to have one or more in an intermediate position (between the front part and the rear part of the seat).
  • a single spider it is no longer necessary to provide in the daytime seat fabric for the passage thereof.
  • the cross-member (s) can be directly welded to the additional bars and base bars; in this case, said additional bars and base bars are pivotally mounted about their longitudinal axis: during folding, these bars are in fact caused to pivot around their axis when the spider branches are brought together (since their welding makes these branches integral with said bars).
  • Such a structure has in particular the advantage of making it possible to provide one or more tabular cross-pieces, having better aesthetics than flat bars and increased resistance for equal weight.
  • the front and rear faces of the seat are released, which increases the comfort of the user who has the option of folding the legs under the seat.
  • people in the rear rows have the possibility of extending their legs without being hampered by the front seats.
  • each crossbar branch (arranged in a transverse plane) forms with the corresponding base bar (arranged in a plane longitudinal) a non-deformable assembly, T-shaped, which reduces the risk of seat deformation (twisting); these risks of deformation are further reduced when the branch in question of the spider is at its other end welded to an additional bar as mentioned above; the non-deformable assembly then has the shape of a 1 and gives the seat remarkable rigidity.
  • the flexible file is carried, on both sides, by tubular sections engaged in the upper part around the rear uprights in order to be able to pivot around the axis of these uprights; each tubular section is preferably associated with return means tending to rotate said nar section relative to the upright, so as to urge the flexible backrest towards the front of the seat.
  • return means tending to rotate said nar section relative to the upright, so as to urge the flexible backrest towards the front of the seat.
  • the invention extends to a folding multiple seat, constituted by the juxtaposition of several individual seats as defined above, the uprights, seat bar and armrest bar located between two adjacent individual seats being common to said individual seats.
  • Such a multiple seat is extremely easy to unfold by a simple action of spacing its sides, which simultaneously ensures the opening of all the individual seats; the multiple seat folds just as easily by a reverse action and its bulk in thickness in the folded state is limited to the adjoining thicknesses of the uprights.
  • Each individual seat making up the multiple seat may be of the type with a single intermediate spider or with two front and rear spiders.
  • each individual seat is provided with additional bars as already mentioned, but comprising two aligned tubular sections able to pivot independently of each other: the spider of an individual seat is welded on one of the sections, while the crosspiece of the adjoining seat is welded on the other section.
  • these provisions make the folding of the multiple seat compatible with the non-deformable structure cross-bar / additional bar of each individual seat.
  • each rear return 12 slides inside the tubular element 1a of the corresponding rear upright, while the extension 15 of each front return 14 slides around the tubular section 3b of the corresponding front upright.
  • These telescopic type sliding means thus guide the two movable seat / armrest assemblies in the ascending or descending direction relative to the uprights; when pressure approximation is exerted on the two sides of the seat as shown schematically in Figure 8, the braces 16 and 17 close by pivoting around the joint 18 which connects their branches, and the above-mentioned mobile seat / acnoadol assemblies move in the direction ascending, approaching until the two sides of the seat come together as shown in Figure 9.
  • latching means urged by return means are associated with these sliding means to stabilize the seat in the open position, while allowing it to be folded up thanks to an appropriate pressure force exerted on the sides of the seat at the start of the folding.
  • these latching and return means are coupled to means making it possible to removably fix each upper rear element Ib of rear upright on the lower front element la of said upright, to form a single latching system carried by each rear upright 1 or 2 and located at the connection of the two elements 1a, 1b constituting the latter; this system is described below with reference to FIG. 3.
  • Each upper rear element 1b enters a sleeve 19 welded to the rear and in the upper part of the element before the corresponding one.
  • This sleeve 19 is welded by a weld bead 30 in a position sufficiently spaced from the element before the to allow the passage of the flexible file 20 behind the returns 12 when the seat is folded.
  • each rear element Ib at its lower part intended to be housed in the sleeve 19.
  • This system includes a retractable locking pin 21 which is carried by a spring 22.
  • the open position of the seat has excellent stability which is however compatible with its folding without additional maneuver to release the stud 21.
  • the stud 21 passing through the aligned holes of the aforementioned walls can only be released from these holes by an action on the spring 22, in order to release the element 1b.
  • This action consists in exerting a pressure towards the rear on the end 22a of said spring, which protrudes slightly from the element lb.
  • the stud 21 is carried by the leaf spring 22 with sufficient play to avoid any jamming during its retraction.
  • This stud can for example be articulated on this spring blade or else be fixed in a lumen of this blade using a groove made in said stud and having dimensions adapted to allow it to play relative to the blade.
  • each seat bar 7 which carries the flexible seat fabric 8 is linked to the return 12 and front return 14 so as to be able to pivot around its longitudinal axis.
  • Each seat bar comprises an internal rod 7a and an external tube 7b which is positioned around said internal rod by centering rings such as 7c.
  • the outer tube carries the seat fabric 8; in the example, the cross-pieces 16 and 17 are articulated around the centering rings 7c.
  • the internal rod 7a is carried by the rear return 12 and the front return 14: for this purpose, it penetrates into bores of these returns (facing walls side) and abuts by its ends inside said returns (opposite sides). It should be noted that this rod 7a also serves to secure the extension 13 of the corresponding return 12.
  • each seat bar constitute simple and easy execution operations.
  • the internal rod 7a is provided at its two ends with chamfers which allow either to introduce it from the rear (the upright element 1b being removed) until it comes up against the front return 14, as the shows Figure 3, either to remove it by exerting a push at the end of it through a small hole 14a that includes this front return.
  • These holes which allow the passage of the rod 7a are drilled in alignment, but, once in place, the very slight overall deformations of the seat inevitably cause a slight misalignment of the rear hole: once the rod introduced, the rear end of the latter therefore abuts on the edges of this rear hole and cannot be released on its own (without the need for a key or any other stop member). Disassembly requires appropriate pressure through the small hole 14a already mentioned.
  • Such an embodiment leads to a simplified structure of very low cost, which benefits from great ease of assembly and disassembly.
  • the cross-pieces 16 and 17 are advantageously welded in the lower part on the base bars 5; each of these base bars is then pivotally mounted around its longitudinal axis, for example by virtue of a structure comparable to that of the seat bars, composed of an internal rod 5a and an external tube 5b on which are welded the braces.
  • the rod 5a is screwed into an internal end piece 23 which the upright section 3b carries, while at the rear, a screw-cap 24 masks said rod 5a.
  • the seat comprises two non-deformable sets in the shape of a U (branch of the cross 16, base bar 5 and parallel branch of the cross 17) which limit the deformations in particular in torsion.
  • the flexible backrest fabric 20 is preferably carried on either side by reported tubular sections such as 25 engaged in the upper part around the rear uprights 1 and 2 ( and more precisely around the upper rear elements 1b of these uprights). These tubular sections can thus pivot around the vertical axis of the uprights, which prevents any jamming of the fabric at its connecting sleeves with the uprights.
  • each tubular section 25 is preferably associated with return means which tend to rotate it relative to the upright in the direction tending to bring the flexible backrest 20 towards the front of the seat.
  • each tubular section 25 is pierced with a cylindrical hole 25a, while the upright lb has a slot 26 in the form of a sector of a circle, extending over approximately 120 °.
  • a spring 27 of circular or spiral shape is housed in the upright lb, with one end in abutment against an edge of the light 26 and the other end engaged in the hole 25a. The spring 27 thus tends to rotate the tubular section 25 and therefore the fabric 20 that the latter carries, in the direction of the arrow drawn in FIG. 5 (direction directed towards the front of the seat).
  • Figures 6 and 7 show a varianls of the return means described above, variant in which the return to the front position of the backrest canvas is effected by gravity.
  • a stud 28 is fixed in the upright so as to protrude through a hole in the latter.
  • the tubular section is perforated with an inclined opening 29 into which this stud penetrates 28. In the absence of support on the fabric, the tubular section comes naturally to be placed in the position of FIG.
  • Figures 8 and 9 show the folding of the seat described above which is carried out by a simple action of bringing together the two sides of the seat.
  • the cross-pieces 16 and 17 rotate around their articulation 18, while the front and rear telescopic tubes deploy: the armrest / seat-bar assemblies move upwards to the fully folded position shown in the figure 9. In this position, the armrests and their rear return have come to the level and facing the said backrest.
  • Such folding can be carried out in a single operation, very conveniently and quickly, without the risk of pinching.
  • the kinematics described above gives complete freedom to arrange the armrests at the desired height above the seat (15 to 20 cm approximately) in order to obtain the best comfort; the backrest which extends immediately above the level of the armrests is then at the ideal height and is held in a stable manner by the uprights.
  • the uprights can, if necessary, be slightly bent backwards in their upper section in order to give an inclination to the backrest.
  • the bends between the armrests and their returns can be made at angles other than 90 ° to obtain, if necessary, desired ascending or descending shapes.
  • the seat fabric is not necessarily rectangular in shape; for example, a slightly trapezoidal shape narrowing forward can increase the comfort of the seat for people with long legs.
  • Figures 10 and 11 show another embodiment of the individual seat described above. Only the differences between the seats will be described below, the same references as in the previous figures having been assigned to the homologous members.
  • the support function of the seat fabric and the function of fixing the brace (s) are separated and fulfilled by separate members.
  • the seat fabric is thus easier to remove since this removal does not require disassembly of the brace (s).
  • another advantage of this arrangement lies in the fact that the fixing of the cross-member (s) can be carried out by welding, without an auxiliary member (straddles or the like ...) and without deformation of the tubes at their ends (flattenings).
  • the seat fabric 9 is supported by seat bars similar to the seat bars 7 and 8 already described (and designated by the same references), but two additional bars such as 31 are used for fixing the upper ends of the or braces. These additional bars 31 are located respectively under one and the other of the seat bars 7 and 8 and are each integral with the corresponding mobile seat / armrest assembly.
  • Each bar 31 is pivotally mounted around its longitudinal axis and may in particular have a structure similar to that of the seat bars 7 or 8 already described, as shown in FIG. 11: an internal rod 31a is carried in the holes of the returns front 14 and rear 12 and abuts by its ends inside said returns; this internal rod 31a leads to in turn an external tube 31b which surrounds it and on which is or are welded the brace (s).
  • a single cross-member is provided (designated by the reference 32) which is welded in an intermediate position, in particular the middle position, in the upper part on the additional bars 31, and in the lower part on the base bars. 5 and 6.
  • This crosspiece 32 can be produced by two tubular branches, which benefit (at equal weight) from better resistance than flat bars and give the seat a more homogeneous aesthetic (since all the elements of its structure are then tubular). These tubular branches are articulated one on the other in their crossing zone 32a and have in this zone offsets 32b in order to preserve the passage of the flexible seat 9 during folding. Each offset 32b is formed by double bending (the tubular branch remaining in a transverse plane).
  • each tubular branch of the cross member forms with the base bar 5 and the corresponding additional bar 32, a non-deformable assembly in the form of an I which gives the seat excellent overall rigidity.
  • Figure 12 shows schematically such a variant with two cross-pieces 33 and 34 welded, respectively towards the front and towards the rear of the seat, on the one hand, in the upper part on the additional bars 31, on the other hand, in the lower part on the base bars 5 and 6.
  • these additional bars and base bars are pivotally mounted about their longitudinal axis, as already described.
  • Figures 13, 14, 15 and 16 present another embodiment which benefits from a very sober aesthetic, due to the absence of front uprights.
  • the same references as above have been used for similar elements.
  • a single spider 50 supports the load of the seat and is welded to the base bars 5 and additional bars 31.
  • the rear uprights 1 and 2 are similar to those of the previous seats and essentially serve as sliding means during folding (these uprights supporting a low load and can even work in tension for certain load configurations).
  • the upper sections lb of the rear uprights are each snapped into their respective sleeves 19 by a rear lug 51 carried by a spring 52 in the form of a cylindrical section, housed in the section lb.
  • the seat fabric is carried by a seat bar comprising an external tube 53 which surrounds a rod 54; in the example, this rod is itself tubular and comprises at its rear end a small spring with stop heel 55 to prevent it from accidentally coming out of the return 12 and the extension 13.
  • each seat bar is provided with a frustoconical part 56 supporting the seat fabric in the vicinity of its front edge; the pieces 56 increase the tension of the fabric towards the front and thus give it a slight slope towards the rear, improving comfort.
  • the base bars 5 located directly above the eseise / armrest assemblies can be constituted by simple tubes capped at the front (the front ends of said flat bars being free due to the 'absence of amounts before); these base bars are linked at the rear to the base of the rear uprights 1 by bolts 57 allowing them to rotate around their longitudinal axis.
  • the front face of the seat is thus completely free; in particular none connection exists at the front of the seat between the base bars and the seat / armrest assemblies.
  • FIGS 15 and 16 illustrate the folding of the seat described above.
  • a similar seat without front uprights can be produced in a similar manner with two front and rear crosspieces, adapted to support the load.
  • the base bars are then linked to the seat / armrest assemblies only by the front crosspieces.
  • FIG. 17 represents a folding multiple seat, constituted by the juxtaposition of several individual seats of the type described above (these seats are three in number in the example shown, but may be provided in different numbers); the uprights (for example 1 and 3), seat bar (for example 7) and armrest bar (for example 10), situated between two contiguous individual seats (5 1 and 5 2 ) are common to said individual seats.
  • the folding or unfolding of such a multiple seat can be carried out just as easily as that of an individual seat, by a single person, by slightly lifting one side of the multiple seat and by exerting on it a pushing force or traction (the other side of the seat being kept fixed to the ground).
  • Each individual seat making up the multiple seat may have two cross-pieces, front 17 and rear 16, as shown in FIG. 17.
  • the cross-pieces 17, 17 'of two contiguous individual seats (5 1 and 5 2 ) have articulated ends one against the other at the end of the corresponding seat bar 7, as shown in one of the details in FIG. 17.
  • two branches of crosspieces On each of the lateral sides of the multiple seat, two branches of crosspieces have an offset such as 35 which makes it possible to catch the thickness of the spider absent at this level.
  • the seat of the multiple seat can be produced as shown in FIG. 18, by a single canvas 40, fixed in the upper part to the rear uprights by sewn sleeves 41.
  • FIG. 19 represents, in partial perspective, the framework of a multiple seat of the type described above, but formed by a juxtaposition of the individual seat provided with a single intermediate spider designated by 32.
  • additional bars 31 are provided below each seat bar 8 or 9, these additional bars being integral with the corresponding mobile assemblies.
  • each additional bar comprises, around an internal rod 31a, two aligned tubular sections 36 and 37, capable of pivoting independently around their longitudinal axis (Figure 20).
  • each base bar which comprises two aligned tubular sections 38 and 39 capable of pivoting independently around their longitudinal axis.
  • the spider 32 of an individual seat is welded to one of the tubular sections 36 or 39 of the additional bar and of the corresponding base bar, while the spider 32 'of the adjoining seat is welded to the other tubular section 37 or 38 of said bars.
  • the additional bars and base bars located on the lateral sides of the multiple seat comprise a single section since they only receive a single spider.
  • the multiple seat can also be produced in a similar manner from individual seats without front uprights (with a single cross as shown schematically in Figure 13 or with two cross).

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Seats For Vehicles (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP19860201285 1985-07-24 1986-07-22 Individueller Klappsitz und davon hergestellter vielfacher Sitz Expired - Lifetime EP0209955B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8511425A FR2585226B1 (fr) 1985-07-24 1985-07-24 Siege pliant individuel et siege multiple realise a partir de celui-ci
FR8511425 1985-07-24

Publications (3)

Publication Number Publication Date
EP0209955A2 true EP0209955A2 (de) 1987-01-28
EP0209955A3 EP0209955A3 (en) 1987-09-23
EP0209955B1 EP0209955B1 (de) 1990-10-03

Family

ID=9321656

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Application Number Title Priority Date Filing Date
EP19860201285 Expired - Lifetime EP0209955B1 (de) 1985-07-24 1986-07-22 Individueller Klappsitz und davon hergestellter vielfacher Sitz

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EP (1) EP0209955B1 (de)
DE (1) DE3674660D1 (de)
FR (1) FR2585226B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11122903B2 (en) * 2019-10-30 2021-09-21 Zhejiang Pride Leisure Products Co., Ltd. Rockable folding chair
US11369202B2 (en) * 2019-08-23 2022-06-28 Robert Steven Graybill Multi-mode portable collapsible chair with multipurpose accessory bag

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR787187A (fr) * 1935-03-13 1935-09-18 Metalfin Support pliant à usages multiples
GB589320A (en) * 1945-02-09 1947-06-17 Nathaniel William Woodcock Improvements in and relating to folding chairs, stools and the like
US3730584A (en) * 1971-01-21 1973-05-01 Uchida Sharyo Co Foldable chair frame assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR787187A (fr) * 1935-03-13 1935-09-18 Metalfin Support pliant à usages multiples
GB589320A (en) * 1945-02-09 1947-06-17 Nathaniel William Woodcock Improvements in and relating to folding chairs, stools and the like
US3730584A (en) * 1971-01-21 1973-05-01 Uchida Sharyo Co Foldable chair frame assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11369202B2 (en) * 2019-08-23 2022-06-28 Robert Steven Graybill Multi-mode portable collapsible chair with multipurpose accessory bag
US11672350B2 (en) 2019-08-23 2023-06-13 Crow Hill LLC Multipurpose accessory bag for multi-mode portable collapsible chair
US11122903B2 (en) * 2019-10-30 2021-09-21 Zhejiang Pride Leisure Products Co., Ltd. Rockable folding chair

Also Published As

Publication number Publication date
FR2585226A1 (fr) 1987-01-30
DE3674660D1 (de) 1990-11-08
EP0209955B1 (de) 1990-10-03
FR2585226B1 (fr) 1988-11-10
EP0209955A3 (en) 1987-09-23

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