EP0114600A2 - Chaise, notamment chaise de bureau - Google Patents

Chaise, notamment chaise de bureau Download PDF

Info

Publication number
EP0114600A2
EP0114600A2 EP84100094A EP84100094A EP0114600A2 EP 0114600 A2 EP0114600 A2 EP 0114600A2 EP 84100094 A EP84100094 A EP 84100094A EP 84100094 A EP84100094 A EP 84100094A EP 0114600 A2 EP0114600 A2 EP 0114600A2
Authority
EP
European Patent Office
Prior art keywords
backrest
seat plate
frame
pivot axis
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
Application number
EP84100094A
Other languages
German (de)
English (en)
Other versions
EP0114600B1 (fr
EP0114600A3 (en
Inventor
Pierre Schmitz
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
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT84100094T priority Critical patent/ATE21613T1/de
Publication of EP0114600A2 publication Critical patent/EP0114600A2/fr
Publication of EP0114600A3 publication Critical patent/EP0114600A3/de
Application granted granted Critical
Publication of EP0114600B1 publication Critical patent/EP0114600B1/fr
Expired 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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs

Definitions

  • the invention relates to a chair, in particular an office chair, with a base which preferably has castors, on the vertically extending, height-adjustable support column of which a support plate is provided which, on the one hand, limits the mounting of a pivot axis which runs horizontally and parallel to the front of the chair for seat tilt adjustment serves pivotable seat plate and on the other hand, a height-adjustable and about a parallel to the rear of the chair running parallel pivot axis for tilt adjustment backrest is supported.
  • the inclination of the seat plate is mechanically adjustable. To adjust the inclination, loosen a fastening, adjust the inclination and then tighten the fastening again. The same applies to the adjustment of the backrest inclination. Since this adjustment is very cumbersome, the desired inclination of the seat plate and the back plate is often set in practice and then hardly changed.
  • the backrest is immovably held on the seat plate and the backrest can be pivoted backwards together with the seat plate.
  • This pivoting of the backrest with the seat plate takes place against the action of a spring, the spring force of which is adjustable.
  • the invention has for its object to provide a chair, in particular office chair, of the type described above, in which such disadvantages are avoided and the inclination of the seat plate is adjustable by shifting the weight, the adjustment of the inclination of the seat plate also an adjustment of the inclination of the backrest causes, which is pivotally mounted on the support plate of the base frame.
  • the seat plate which can be tilted by shifting the weight of the chair user about the pivot axis running parallel to the front of the chair is coupled to the backrest which can be tilted about the second pivot axis running parallel to the rear of the chair and when the front is tilted forward, the backrest is forward and swiveled the backrest backwards when leaning back.
  • the seat plate, which can be tilted on the base frame thus advantageously also causes a change in the inclination of the backrest when it is tilted, which is pivotally mounted on the support plate of the base frame.
  • the backrest thus tilted can be done with a transmission ratio. It is thereby achieved in a simple manner that the backrest ver by an angle when the seat plate is inclined by a certain inclination angle is pivoted, which is greater than the angle of inclination of the seat plate.
  • the backrest therefore adapts advantageously to the body of the user.
  • the backrest thus tilted can be done with a transmission ratio of approximately 2 to 3. It is thereby achieved in a simple manner that when the seat plate is inclined by an angle of 2 °, the backrest thus caused is inclined by an angle of 3 °.
  • the inclinable seat plate can be coupled to the inclinable backrest via a connecting lever.
  • the seat plate is coupled to the backrest in a simple manner via a connecting lever, so that the advantageous connection between the seat plate and the backrest takes place with a simple component.
  • the connecting lever can be articulated at one end to the free end of a strut which is rigidly attached to a holding frame fastened on the underside of the seat plate and runs down approximately at right angles to the seat plane and penetrated by the pivot axis of the seat plate, and is articulated on the other hand to a backrest holder penetrated by the pivot axis of the backrest .
  • the two swivel axes of the seat plate with the holding frame and the backrest with the backrest holder can pass through the support plate held on the support column of the base frame running parallel to one another in an approximately horizontal plane, the support column of the base frame engaging the support plate in front of the two pivot axes.
  • the seat plate is thus tilted around an axis, which runs parallel to the axis on which the pivotable backrest is articulated.
  • the two axes pass through the support plate held on the support column of the base frame, the support column of the base frame engaging the support plate in front of the two pivot axes.
  • the distance between the pivot axis of the seat plate and the pivot axis of the connecting lever can be greater than the distance between the pivot axis of the backrest and the pivot axis of the connecting lever on the backrest holder.
  • the swiveling movement of the backrest is increased in comparison to the swiveling of the seat plate causing it.
  • the distance between the pivot axis of the seat plate and the articulation axis of the connecting lever on the strut rigidly attached to the holding frame of the seat plate can be in a ratio of about 3 to 2 to the distance between the pivot axis of the backrest and the articulation axis of the connecting lever on the backrest holder.
  • the longer lever travel means that when the seat plate is inclined by an angle of 2 °, the backrest is inclined by an angle of 3 °.
  • the holding frame attached to the underside of the seat plate can consist of two frame webs running parallel to one another and to the sides of the chair, the supporting plate of the foot part between them, the front ends of which are connected to a front frame web projecting beyond the lateral frame webs and the frame webs have openings for fastening means such as screws or the like. exhibit.
  • the holding frame to be fastened to the seat plate thus consists of three frame webs which are made of die-cast aluminum and can be easily welded or the like. are interconnected.
  • the frame webs have openings for fasteners in the form of screws or the like. on.
  • the holding frame which is attached to the seat plate and can be tilted to a limited extent via the pivot axis, is connected to the supporting plate held on the support column of the base frame in one end position with a stop bar against the upper side of the front end of the holding plate and adjoining the front frame web of the holding frame and in the other End position with a stop plate held on the upper side of the two side frame webs of the holding frame, which is provided on the ends of the side frame webs facing away from the front frame web of the holding frame.
  • the pivoting movement of the seat plate can thus be limited in a simple manner, which at the same time also limits the pivoting movement of the backrest.
  • the pivotal movement is limited in a simple manner by the fact that the support plate held on the support column of the base frame comes to rest against the stop web or the stop plate.
  • the two lateral frame webs of the holding frame can have tubular bearing receptacles for accommodating the pivot axis, with reinforcement plates being provided on the sides of the lateral frame webs facing one another and the pivot axis engaging with tapered roller bearings in the tubular bearing receptacles.
  • One of the two on the side frame webs of the Reinforcement plates held by the support frame can have a downwardly projecting extension which forms the strut which is articulated to the connecting lever.
  • the strut articulated to the connecting lever is thus formed in a simple manner by an extension of the reinforcing plate which is present anyway, so that simple manufacture is possible.
  • the pivoting axis which connects the holding frame fastened to the seat plate and the supporting plate held on the supporting column of the base frame in an articulated manner can be held in the supporting plate in a rotationally fixed manner and secured against displacement in the axial direction.
  • the pivot axis is held in a simple manner on the support plate, so that the seat plate with the holding frame can tilt on the pivot axis which is secured against rotation and secured against displacement.
  • the pivot axis extending through the support plate can have a flattening against which a screw drawn into a threaded hole in the support plate bears with its free end.
  • flattening is thus only provided on the swivel axis and a screw is to be inserted into a threaded hole in the support plate, the free end of which rests against the flattening of the swivel axis.
  • the pivot axis is secured against rotation and against displacement in the longitudinal direction.
  • the articulation axis can be formed between the connecting lever and the strut fastened to the holding frame of the seat plate by a sleeve which is penetrated by a screw with a nut, the nut and the screw head with the interposition of washers against the opposite sides of the connecting lever and the strut. This creates an articulated connection between the intermediate lever and strut in a particularly simple manner.
  • the articulation axis can pass through a gunmetal bearing of the connecting lever between the connecting lever and the backrest holder and engage with the two ends in gunmetal bearings which are provided in the backrest holder.
  • a reliably acting articulated connection between the connecting lever and the backrest holder is also created in a simple manner, the articulation axis rotatably engaging in the gunmetal bearing of the backrest holder.
  • the articulation axis between the connecting lever and the backrest holder can have circumferential grooves on its two ends protruding from the bearings, in which holder edges of attached caps engage. With these attached caps, the articulation axis is thus secured against axial displacement. It also improves the look.
  • the second pivot axis reaching through the support plate and the backrest holder can pass through openings in the support plate and the side walls of the backrest holder and can be secured against axial displacement with attached caps. This also creates an articulated connection between the support plate and the backrest holder in a simple manner, this second pivot axis also being secured against axial displacement by attached caps.
  • the support plate held on the support column of the base frame can have an upwardly open receptacle for a helical compression spring, which is at one end against the bottom of the receptacle and at the other against the at the Supported stop plate supported top of the holding frame.
  • a helical compression spring With this helical compression spring, the seat plate and the backrest can be easily returned to the basic position.
  • the spring force of the helical compression spring should only be so great that the seat plate and the backrest are reset. The tilting of the seat plate with the weight shift of the user takes place from the basic position against the action of this helical compression spring.
  • this helical compression spring should not impair the adjustment.
  • the backrest holder can have an approximately vertical opening for a rod articulated on the backrest, which can be fixed in different positions with an actuating handle.
  • the backrest can thus be released and adjusted to the desired height positions, after which the actuating handle is then to be moved back into the locked position.
  • the office chair shown in the drawing consists of a base 10 with 5 feet 11, which have rollers 12 at their free ends.
  • a gas spring 13 is provided in the base frame 10, with which the height of a support column 15 can be adjusted via an actuating lever 14.
  • a support plate 16 attached at the upper end of the support column 15 or the like is by welding.
  • the seat plate 19 which can be inclined by shifting the weight of the chair user about the pivot axis 17 running parallel to the front of the chair is coupled to the backrest 21 which can be inclined about the second pivot axis 20 extending parallel to the rear of the chair via a connecting lever 22, so that when the seat plate 19 is inclined in front the backrest 21 also forwards and when the seat plate 19 is inclined rear the backrest 21 is also pivoted backwards.
  • the tilting of the backrest 21 caused when the seat plate 19 is tilted takes place with a transmission ratio. This means that when the seat plate 19 is tilted, the backrest 21 is tilted with a larger swivel angle.
  • the gear ratio can be about 2 to 3. This ensures in a simple manner that when the seat plate 19 tilts due to a shift in weight of the user, the backrest 21 remains in contact with the back of the user when the user is leaning forward or backward.
  • the connecting lever 22 is articulated on one end to the free end of a strut 23 which is rigidly held on a holding frame 18 fastened on the underside of the seat plate 19 and extends approximately at right angles to the seat plane level and is penetrated by the pivot axis 17 of the seat plate 19, and the other on one of the Swivel axis 20 of the backrest 21 articulated through the backrest holder 24.
  • the two pivot axes 17, 20 of the seat plate 19 with the holding frame 18 and the backrest 21 with the backrest holder 24 pass through the support plate 16 held on the support column 15 of the base frame 10, running parallel to one another in an approximately horizontal plane, the support column 15 of the base frame 10 in front of the two pivot axes 17, 20 attacks on the support plate 16.
  • an approximately centrally arranged support of the seat plate 19 is achieved, the desired tilting of the seat plate 19 and the backrest 21 being able to be carried out by shifting the weight of the user.
  • the distance between the pivot axis 17 of the seat plate 19 and the articulation axis 25 of the connecting lever 22 is greater than the distance between the pivot axis 20 of the backrest 21 and the articulation axis 26 of the Connecting lever 22 on the backrest holder 24.
  • the distances are in the ratio of 2 to 3, so that in this way the pivoting of the backrest 21 is achieved by a larger angle when the seat plate 19 is tilted.
  • the holding frame 18 fastened on the underside to the seat plate 19 consists of two frame webs 27, which support the plate 16 of the foot part 10 between them and extend parallel to one another and to the sides of the chair, the front ends of which with a Front frame web 28 projecting beyond the lateral frame webs 27 are connected to one another. Openings 29 for fastening screws 30 are provided in the frame webs 27, 28. With these fastening screws 30, the holding frame 18 can thus be fastened on the underside to the seat plate 19 in a simple manner.
  • the holding frame 18, which is fastened to the seat plate 19 and can be tilted via the pivot axis 17 and is connected to the support plate 16 held on the support column 15 of the base frame 10, can be tilted to a limited extent.
  • the holding frame 18 rests against the upper side of the front end of the support plate 16 with a stop web 31 adjoining the front frame web 28 of the holding frame 18.
  • the holding frame 18 rests against the upper side of the rear end of the supporting plate 16 with a stop plate 32 held on the upper side of the two lateral frame webs 27 of the holding frame 18. This is with a fold means created a limit for the tilting movement of the seat plate 19 and thus also the backrest 21.
  • the two side frame webs 27 of the holding frame 18 have tubular bearing receptacles 33 for receiving the pivot axis 17, with reinforcement plates 34 being provided on the sides of the side frame webs facing one another.
  • the pivot axis 17 engages with tapered roller bearings 35 in the tubular bearing receptacles. 33 a. This results in a smooth bearing of the pivot axis 17 in the tubular bearing receptacles 33, the pivot axis 17 being mounted reliably in the holding frame 18 and being able to take up the required load.
  • the pivot frame 17 fastened to the seat plate 19 and the support plate '16 which is attached to the support column 15 of the base frame 10 in an articulated manner is non-rotatably and secured against displacement in the axial direction in the support plate 16.
  • the pivot axis 17 passing through the support plate 16 has a flattening 36 against which a screw 37 drawn into a threaded hole of the support plate 16 bears with its free end. By pulling this screw 37, the pivot axis 17 is thus reliably secured against rotation and axial displacement on the support plate 16.
  • the strut 23 is thus formed in a simple manner by an extension of the reinforcing plate 34, which is present anyway.
  • the Articulation axis 25 between the connecting lever 22 and the strut 23 fastened to the holding frame 18 of the seat plate 19 is formed by a sleeve 40 penetrated by a screw 38 with a nut 39, the nut 39 and the screw head 38 with the interposition of washers 41 against the opposite sides of the Connection lever 22 and the strut 23 abut.
  • a sleeve 40 penetrated by a screw 38 with a nut 39, the nut 39 and the screw head 38 with the interposition of washers 41 against the opposite sides of the Connection lever 22 and the strut 23 abut.
  • the articulation axis 26 between the connecting lever 22 and the backrest holder 24 passes through a gunmetal bearing 42 of the connecting lever 22 and engages with both ends in gunmetal bearings 43 which are provided in the backrest holders 24. As a result, the articulation axis 26 is reliably held on the connecting lever 22 and on the backrest holder 24.
  • the articulation axis 26 between the connecting lever 22 and the backrest holder 24 has, at its two ends protruding from the bearings 43, circumferential grooves 44, in which holder edges of attached caps 45 engage. With these caps 45, the articulation axis 26 is reliably secured against axial displacement.
  • the second pivot axis 20 which passes through the support plate 16 and the backrest holder 24 extends through openings in the support plate 16 and the side walls 46 of the backrest holder 24 and is secured against axial displacement by means of caps 47.
  • the backrest holder 24 is reliably pivotably supported on the support plate 16 of the base frame 10.
  • the support plate 16 held on the support column 15 of the base frame 10 has an upwardly open receptacle 47 for a helical compression spring 48 which extends at one end against the bottom 49 of the receptacle 47 and elsewhere against the stop plate 32 held on the upper side of the holding frame 18.
  • a helical compression spring 48 With this helical compression spring 48, the seat plate 19 and the backrest 21 are reset to the basic position when the user releases the office chair.
  • the basic position is shown in FIGS. 1 and 2.
  • the helical compression spring 48 is, however, relatively weak, so that the force is just sufficient to swing the seat plate 19 and the backrest 21 back into the basic position.
  • the helical compression spring 48 is intended to oppose the tilting of the seat plate 19 and the backrest 21 to the rear as little as possible.
  • the backrest holder 24 has an approximately vertical opening 50 for a rod 51 articulated on the backrest 21, which can be fixed in different positions with an actuating handle 52.
  • the backrest 21 can thus be fixed in different height positions.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Special Chairs (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP84100094A 1983-01-21 1984-01-07 Chaise, notamment chaise de bureau Expired EP0114600B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84100094T ATE21613T1 (de) 1983-01-21 1984-01-07 Stuhl, insbesondere buerostuhl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3301900 1983-01-21
DE3301900 1983-01-21

Publications (3)

Publication Number Publication Date
EP0114600A2 true EP0114600A2 (fr) 1984-08-01
EP0114600A3 EP0114600A3 (en) 1984-08-22
EP0114600B1 EP0114600B1 (fr) 1986-08-27

Family

ID=6188816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100094A Expired EP0114600B1 (fr) 1983-01-21 1984-01-07 Chaise, notamment chaise de bureau

Country Status (4)

Country Link
US (1) US4596421A (fr)
EP (1) EP0114600B1 (fr)
AT (1) ATE21613T1 (fr)
DE (1) DE3460513D1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2594663A1 (fr) * 1986-02-21 1987-08-28 Cofemo Spa Chaise ou fauteuil a inclinaison variable et synchronisee de l'assise et du dossier
EP0237825A2 (fr) * 1986-03-15 1987-09-23 Drabert Söhne GmbH & Co. Siège
GB2246287A (en) * 1990-06-12 1992-01-29 Unit Press Limited Underseat mechanism for chairs
WO1993003653A1 (fr) * 1991-08-22 1993-03-04 Peter James Riddle Dossier de chaise avec compensation du poids
WO1997010734A1 (fr) * 1995-09-21 1997-03-27 Pius Ponticelli Siege
WO2000022959A1 (fr) * 1998-10-20 2000-04-27 Protoned B.V. Systeme mecanique pour fauteuil
US6969116B2 (en) 2003-12-30 2005-11-29 Hni Technologies Inc. Chair with backward and forward passive tilt capabilities
USD940485S1 (en) * 2020-02-17 2022-01-11 Dongguan Boyi Furniture Co., Ltd. Chair seat

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3527785A1 (de) * 1985-08-02 1987-02-12 Froescher August Gmbh Co Kg Stuetz- und verstelleinrichtung fuer sitz und rueckenlehne an einem arbeitsstuhl
US5331136A (en) * 1990-01-18 1994-07-19 Norand Corporation Hand-held data capture system with interchangeable modules
US5037158A (en) * 1990-01-16 1991-08-06 Westinghouse Electric Corporation Height adjustment mechanism for chair back
US5356200A (en) * 1992-10-23 1994-10-18 Doerner Products Ltd. Unitary brake for a chair tilt mechanism
GB2275867A (en) * 1993-01-27 1994-09-14 Production Tools Seat recliner mechanism
CA2174511A1 (fr) * 1993-11-01 1995-05-11 Willi Hensel Chaise de bureau a reglage synchrone du siege et du dossier
GB2293312B (en) * 1994-08-03 1999-01-20 Crispin Hall Variable ratio synchronised chair movement
DE19702328A1 (de) * 1997-01-23 1998-07-30 Comforto Gmbh Stuhl mit Synchronmechanik
WO2001013765A1 (fr) * 1998-09-18 2001-03-01 Rabami A/S Chaise ergonomique
AU783829B2 (en) * 2000-09-28 2005-12-08 Formway Furniture Limited A reclinable chair
DE102004053965B4 (de) * 2004-11-09 2006-10-12 Girsberger Holding Ag Stuhl
JP5433832B2 (ja) * 2008-11-25 2014-03-05 有限会社ビューティフルライフ 椅子
US11246417B2 (en) * 2019-08-07 2022-02-15 Chen Raizman Tilt-swivel mechanism chair

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2343739A (en) * 1942-09-09 1944-03-07 Kalmus Golden Inc Weight action for chair backs
US2403198A (en) * 1944-06-06 1946-07-02 Collier Keyworth Company Chair iron

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1909018A (en) * 1931-04-20 1933-05-16 Sikes Company Chair
US2374350A (en) * 1941-10-01 1945-04-24 Bassick Co Posture chair
US2615496A (en) * 1949-05-26 1952-10-28 Lorenz Reclining article of furniture
US2859799A (en) * 1956-05-03 1958-11-11 Edwin R Moore Functional posture controller for chairs
US3455601A (en) * 1966-11-02 1969-07-15 Finn Lie Support unit for chair
CH636252A5 (de) * 1978-10-20 1983-05-31 Syntech Sa Ergonomischer stuhl.
US4432582A (en) * 1981-12-17 1984-02-21 Wilkhahn-Wilkening & Hahne Gmbh & Company Chair with means for adjusting the inclination of the backrest

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2343739A (en) * 1942-09-09 1944-03-07 Kalmus Golden Inc Weight action for chair backs
US2403198A (en) * 1944-06-06 1946-07-02 Collier Keyworth Company Chair iron

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2594663A1 (fr) * 1986-02-21 1987-08-28 Cofemo Spa Chaise ou fauteuil a inclinaison variable et synchronisee de l'assise et du dossier
EP0237825A2 (fr) * 1986-03-15 1987-09-23 Drabert Söhne GmbH & Co. Siège
EP0237825A3 (fr) * 1986-03-15 1988-01-07 Drabert Söhne GmbH & Co. Siège
US5286088A (en) * 1990-06-12 1994-02-15 Unit Press Limited Underseat mechanism for a chair
GB2246287B (en) * 1990-06-12 1993-10-20 Unit Press Limited Back support pillar for a chair
GB2246287A (en) * 1990-06-12 1992-01-29 Unit Press Limited Underseat mechanism for chairs
WO1993003653A1 (fr) * 1991-08-22 1993-03-04 Peter James Riddle Dossier de chaise avec compensation du poids
AU665208B2 (en) * 1991-08-22 1995-12-21 Duffield, Anne Constance Weight compensating chair backrest
WO1997010734A1 (fr) * 1995-09-21 1997-03-27 Pius Ponticelli Siege
WO2000022959A1 (fr) * 1998-10-20 2000-04-27 Protoned B.V. Systeme mecanique pour fauteuil
WO2000022961A1 (fr) * 1998-10-20 2000-04-27 Vitra Patente Ag Mecanique de fauteuil
US6439661B1 (en) 1998-10-20 2002-08-27 Vitra Patente Ag Chair mechanism
US6969116B2 (en) 2003-12-30 2005-11-29 Hni Technologies Inc. Chair with backward and forward passive tilt capabilities
USD940485S1 (en) * 2020-02-17 2022-01-11 Dongguan Boyi Furniture Co., Ltd. Chair seat

Also Published As

Publication number Publication date
EP0114600B1 (fr) 1986-08-27
EP0114600A3 (en) 1984-08-22
ATE21613T1 (de) 1986-09-15
US4596421A (en) 1986-06-24
DE3460513D1 (en) 1986-10-02

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