EP0539377B1 - Chaises souples empilables en nombre - Google Patents
Chaises souples empilables en nombre Download PDFInfo
- Publication number
- EP0539377B1 EP0539377B1 EP91907969A EP91907969A EP0539377B1 EP 0539377 B1 EP0539377 B1 EP 0539377B1 EP 91907969 A EP91907969 A EP 91907969A EP 91907969 A EP91907969 A EP 91907969A EP 0539377 B1 EP0539377 B1 EP 0539377B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chair
- seat
- connection means
- frame
- leg portions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/021—Rocking chairs having elastic frames
- A47C3/023—Rocking chairs having elastic frames made of tubular material
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/04—Stackable chairs; Nesting chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
Definitions
- the present invention relates to chair design, more specifically, to a design for a high density stacking chair with a tilting back.
- a chair with a tiltable back portion is presented, wherein a single frame is provided, having a seat portion attached thereto, and a back portion pivotally attached thereto.
- ergometric adjustment of the chair is accomplished by tilting of the back portion and flexure of the frame, and flexure of the frame urges the back portion into a normal upright position for stacking and uniform appearance.
- the back portion may be curved and hollow, and engages the frame at upper and lower curved sections of the frame, which sections preferably have radii of curvatures less than that of the back portion and which sections are positioned at a downward angle such that the effective horizontal radii of the sections in the upright position is shorter than the actual radii, causing the back portion to rest against the curved sections and limit forward tilting of the chair back. Therefore when the back portion is tilted, the radial movement disengages the back portion from the curved sections due to the preferred difference in radii, until the angle of tilt is such that the effective radii are again equal and the back portion again rests against the curved sections of the frame and limits tilting backward.
- Fig. 1 is a chair built according to the present invention.
- Fig. 2 is the preferred embodiment of a chair built according to the present embodiment.
- Figs. 3-5 are views taken across section 3-3 of Fig. 1 and showing the chair extending through its range of backward tilt.
- Fig. 6 is a view taken across Section 6-6 of Fig. 4 and represents a plan view of the chair according to the present invention.
- Fig. 7 is a perspective view of the chair according to the present invention.
- a first embodiment of a chair according to the present invention is shown.
- the back portion is curved to adapt to a user's back and is composed of a front section 32 and a rear section 34, each of which has a lip 33, 35 or other spacer which creates a hollow interior space between sections when they are attached.
- the frame 10 is ideally a continuous structure, constructed of solid rod or tubular steel or the like. Alternatively, it may consist of welded or otherwise connected sections.
- the frame 10 has an upper curved section 12 which is enclosed within the back portion 30 with cylindrical bearing sections 12a at either end and which extends through the middle of the back portion and is angled downward.
- the frame 10 then extends from each end of the upper curved section 12 outward from the hollow interior, the back portion 30 being pivotally attached thereto at the cylindrical sections 12a.
- This pivotal attachment can be accomplished by bearings attached to the front section 32, but is preferably accomplished by providing bearing surfaces 12b formed on plastic molded front and back sections 32 and 34.
- the frame 10 has a pair of rear support legs 16 which extend downward and rearward to a floor surface and forwardly along the floor.
- a pair of front support legs 18 then extend upward and rearward to the front of the seat portion 20, then rearward supporting the seat portion 20, then slightly inward, then upward into the back portion 30, then inward, where the back portion is again pivotally attached in a manner similar to the pivot connection 12a and 12b.
- the frame 10 continues to a lower curved section 14 which is enclosed within the back portion and which extends through the back portion having a downward angle.
- the distance d 1 between the opposing legs of the frame 10 as it sits on the floor is lesser than the width d 2 of the seat portion 20, so as to facilitate stacking a plurality of such chairs.
- the seat supporting portion of the frame 10 is positioned inwardly from the edges of the seat portion 20 and connected by welded struts 22 to improve the support of the seat portion and lateral stability of the frame.
- lateral stability can be provided by a pair of stabilizers 50, 52.
- clips 24 are attached to the bottom surface of the seat portion 20 in order to easily attach/detach the seat portion to frame 10.
- the back portion 30 is a one-piece molded unit, having openings or clips 40 which are adapted to pivotally engage the rear support legs 16 at cylindrical sections 12a. Openings or clips 42 are likewise adapted to pivotally engage the front support legs 18. In this way, the back portion 30 may be easily and securely fitted to frame 10.
- the curved sections 12 and 14 remain in a fixed position relative to frame 10 to provide pivotal limits, as will be next described.
- Figs. 3-5 the tilting action of the back portion 30 is illustrated.
- the rear support legs 16 of the frame 10 are inclined at a forward angle so as to provide a natural spring-type action which holds the back portion 30 forward.
- the curved sections 12 and 14 of frame 10 are parallel, each extending outward and downward from the back of the front section 32 at a twenty-two and one-half degree angle.
- the radii of curvature for both curved sections 12 and 14 is lesser than that of the back portion.
- the radius of curvature of section 12 projected at a plane inclined to the plane of section 12 by an angle of 22.5 degrees equals the radius of curvature of the back portion 30, such that the inside of the front section 32 is in contact with the curved sections 12 and 14 at points 36 and 37 as a result of the effective radius of the curved sections 12 and 14 being equal to the radius of the back portion 30.
- the front section 32 pivots about point 50 on the upper curved section, causing the upper half of the front section to rotate backwards, and the lower half to rotate forward about point 50.
- the seat portion 20 will be lifted by the forward rotation of the lower curved section 14. Since the back portion 30 has a greater radius of curvature than both curved sections, the back portion lifts away from the curved sections as it is tilted, reengaging the curved sections at points 38 and 39, located further down the back portion, where the effective radii of the back portion is again equal to the radii of the curved sections after the back portion has tilted 45 degrees.
- FIG. 6 A clearer view of the relationship of the curved sections 12 and 14 to the overall frame structure 10 is illustrated in Fig. 6 where the cylindrical sections of the frame 12a are apparent providing straight bearing areas.
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Stackable Containers (AREA)
Claims (11)
- Chaise, comprenant :un siège (20) adapté à engager le fessier d'un utilisateur ;un dossier (30) généralement perpendiculaire audit siège et adapté à engager le dos d'un utilisateur et comportant des régions supérieure et inférieure ; etun châssis (10) pour maintenir et supporter lesdites parties formant siège (20) et dossier (30), ledit châssis comprenantune paire de pieds de support (16, 18), un de chaque côté du siège (20) avec chaque pied de support comportant une partie de pied arrière (16) fixée de manière à pivoter par des premiers moyens de connexion (12a, 42) à la région supérieure dudit dossier (30), une partie de pied avant (18) s'étendant vers le haut jusqu'à l'avant dudit siège (20) pour supporter ledit siège (20), une partie de pied inférieure pour s'étendre le long d'une surface du sol entre ladite partie de pied arrière (16) et ladite partie de pied avant (18),des deuxièmes moyens de connexion (12a, 40) reliant avec possibilité de pivotement l'arrière (12) du châssis à la région inférieure dudit dossier (30) à un emplacement en dessous de la fixation (12a, 42) des parties de pied arrière (16) à la région supérieure dudit dossier (30), de manière que la flexibilité du châssis (10) permette au dossier (30) de s'incliner élastiquement vers une position inclinée tandis que le poids de l'utilisateur est porté par les deuxièmes moyens de connexion (12a, 40).
- Chaise selon la revendication 1, dans laquelle ledit dossier (30) a une surface courbe.
- Chaise selon la revendication 1 ou 2, caractérisée en outre par un mouvement de pivotement relatif limité du dossier (30) dans les deux directions par rapport aux pieds de support entre une position verticale déterminée par les moyens d'arrêt et une position inclinée avec le dossier (30) maintenu dans la position verticale par l'élasticité des pieds de support.
- Chaise selon la revendication 3, caractérisée en outre en ce qu'une barre courbe (12) reliée entre les parties de pied arrière (16) pour un mouvement de pivotement par rapport au dossier (30) alors que le dossier (30) pivote par rapport aux pieds, avec la barre courbe (12) ayant un rayon de courbure inférieur au rayon de courbure du dossier (30) de manière que la barre courbe (12) limite le mouvement de pivotement du dossier (30) dans les deux directions.
- Chaise selon la revendication 3, caractérisée en outre en ce qu'une première section curviligne (12) est fixée à chacune desdites parties de pied arrière (16) à la région supérieure dudit dossier (30) et s'étend en travers de la région supérieure à un angle vers le bas, dans laquelle chaise ladite première section curviligne (12) a un rayon de courbure inférieur au rayon de courbure du dossier (30), et dans laquelle chaise ledit dossier (30) est fixé de manière à pivoter auxdites parties de pied arrière (16) et à ladite première section curviligne, et une deuxième section curviligne (14) est fixée auxdits moyens de connexion à la région inférieure dudit dossier (30) et s'étend en travers de la région inférieure audit angle vers le bas, dans laquelle chaise ladite deuxième section curviligne (14) a un rayon de courbure inférieur au rayon de courbure du dossier, et ledit angle vers le bas est égal à 22,5 degrés environ.
- Chaise selon l'une quelconque des revendications 1 à 5, caractérisée en outre en ce que lesdites parties de pied inférieures sont espacées d'une distance supérieure à la largeur du siège afin de faciliter l'empilage.
- Chaise selon l'une quelconque des revendications 1 à 6, caractérisée en outre en ce que les deuxièmes moyens de connexion (12a, 40) sont situés au-dessus du bas du dossier (30).
- Chaise selon l'une quelconque des revendications 1 à 7, caractérisée en outre en ce que les premiers moyens de connexion (12a, 42) sont situés au-dessous du haut du dossier (30) et les deuxièmes moyens de connexion (12a, 40) sont situés au-dessus du bas du dossier (30) et au-dessous des premiers moyens de connexion (12a, 42).
- Chaise selon l'une quelconque des revendications 1 à 8, caractérisée en outre en ce que les deuxièmes moyens de connexion (12a, 40) sont situés au-dessus du siège (20).
- Chaise selon l'une quelconque des revendications 1 à 9, caractérisée en outre en ce que lesdites parties de pied avant (18) s'étendent vers l'arrière le long du siège (20) pour se raccorder avec lesdits deuxièmes moyens de connexion (12a, 40).
- Chaise selon l'une quelconque des revendications 1 à 9, caractérisée en outre en ce que lesdites parties de pied avant (18) s'étendent vers l'arrière le long du siège pour former lesdits deuxièmes moyens de connexion.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US50671690A | 1990-04-10 | 1990-04-10 | |
US506716 | 1990-04-10 | ||
PCT/US1991/002305 WO1991015139A1 (fr) | 1990-04-10 | 1991-04-03 | Chaises souples empilables en nombre |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0539377A1 EP0539377A1 (fr) | 1993-05-05 |
EP0539377A4 EP0539377A4 (en) | 1993-06-16 |
EP0539377B1 true EP0539377B1 (fr) | 1998-06-17 |
Family
ID=24015733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91907969A Expired - Lifetime EP0539377B1 (fr) | 1990-04-10 | 1991-04-03 | Chaises souples empilables en nombre |
Country Status (12)
Country | Link |
---|---|
US (1) | USRE36335E (fr) |
EP (1) | EP0539377B1 (fr) |
JP (2) | JPH0815446B2 (fr) |
KR (1) | KR0182297B1 (fr) |
AT (1) | ATE167369T1 (fr) |
AU (1) | AU651971B2 (fr) |
CA (1) | CA2080248C (fr) |
DE (1) | DE69129628T2 (fr) |
ES (1) | ES2118081T3 (fr) |
IL (1) | IL97762A (fr) |
NZ (1) | NZ237726A (fr) |
WO (1) | WO1991015139A1 (fr) |
Families Citing this family (43)
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DE8401000U1 (de) * | 1984-01-14 | 1984-04-05 | Mauser Waldeck AG, 3544 Waldeck | Drehsessel |
NZ208410A (en) * | 1984-06-06 | 1989-02-24 | Atlas Furniture Ltd | Chair with dual independently adjustable pivotal backrest parts |
CA1249503A (fr) * | 1984-06-08 | 1989-01-31 | Paolo Favaretto | Chaise |
JPS615165A (ja) * | 1984-06-16 | 1986-01-10 | 株式会社アイジー技術研究所 | サイディングボ−ド |
DE3429186A1 (de) * | 1984-08-08 | 1986-02-20 | Uredat-Neuhoff, Angela, 4592 Lindern | Sitzmoebel, insbesondere buerostuhl |
IL73031A (en) * | 1984-09-19 | 1986-11-30 | Yaacov Kaufman | Improved self adjusting chair |
CH666169A5 (fr) * | 1985-09-02 | 1988-07-15 | Andre Dupraz | Element d'armature pour structure de meubles. |
US4744600A (en) * | 1986-05-06 | 1988-05-17 | Itoki Co., Ltd. | Cushioning mechanism for use with seat of chair and interlocking cushioning mechanism for seat and backrest |
US4648653A (en) * | 1986-05-30 | 1987-03-10 | Rowland David L | Stackable armchair |
US4711491A (en) * | 1986-06-09 | 1987-12-08 | Jonathan Ginat | Swivel tilt mechanism for chair |
IT206947Z2 (it) * | 1986-06-12 | 1987-10-26 | Pro Cord Srl | Sedia con schienale articolato |
DE3635811A1 (de) * | 1986-10-22 | 1988-05-05 | Ver Spezialmoebel Verwalt | Stuhl mit einem aus profilen zusammengesetzten stuhlgestell |
CH672882A5 (fr) * | 1987-06-09 | 1990-01-15 | Syntech Sa | |
US4840426A (en) * | 1987-09-30 | 1989-06-20 | Davis Furniture Industries, Inc. | Office chair |
US4819986A (en) * | 1988-02-10 | 1989-04-11 | Markus Isidoro N | Reclining chair with suspended seating |
US5338094A (en) * | 1988-04-25 | 1994-08-16 | Perry Charles O | Flexible reclining chair |
JPH04500613A (ja) * | 1988-04-25 | 1992-02-06 | ペリー、チャールズ・オー | もたれ椅子 |
US5383712A (en) * | 1988-04-25 | 1995-01-24 | Perry; Charles O. | Flexible chair |
US5180208A (en) * | 1991-02-05 | 1993-01-19 | Victor Lawandi | Quick-disconnect knockdown furniture having a flexible support with a plurality of frame member storage pockets |
US5131715A (en) * | 1991-03-27 | 1992-07-21 | Balles Rosemary K | Mobile chair apparatus |
US5308142A (en) * | 1992-01-23 | 1994-05-03 | Steelcase, Inc. | Chair with arm mounted motion control |
US5626394A (en) * | 1995-06-07 | 1997-05-06 | Perry; Charles O. | Tubular chair frame |
-
1991
- 1991-04-03 AT AT91907969T patent/ATE167369T1/de not_active IP Right Cessation
- 1991-04-03 WO PCT/US1991/002305 patent/WO1991015139A1/fr active IP Right Grant
- 1991-04-03 EP EP91907969A patent/EP0539377B1/fr not_active Expired - Lifetime
- 1991-04-03 KR KR1019920702522A patent/KR0182297B1/ko not_active IP Right Cessation
- 1991-04-03 JP JP3507861A patent/JPH0815446B2/ja not_active Expired - Lifetime
- 1991-04-03 CA CA002080248A patent/CA2080248C/fr not_active Expired - Lifetime
- 1991-04-03 ES ES91907969T patent/ES2118081T3/es not_active Expired - Lifetime
- 1991-04-03 IL IL9776291A patent/IL97762A/en not_active IP Right Cessation
- 1991-04-03 DE DE69129628T patent/DE69129628T2/de not_active Expired - Lifetime
- 1991-04-03 AU AU76916/91A patent/AU651971B2/en not_active Expired
- 1991-04-08 NZ NZ237726A patent/NZ237726A/en unknown
-
1997
- 1997-01-23 US US08/786,994 patent/USRE36335E/en not_active Expired - Lifetime
- 1997-04-07 JP JP9103917A patent/JP3065274B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69129628T2 (de) | 1998-10-15 |
IL97762A (en) | 1994-08-26 |
ATE167369T1 (de) | 1998-07-15 |
WO1991015139A1 (fr) | 1991-10-17 |
NZ237726A (en) | 1994-08-26 |
JPH1033294A (ja) | 1998-02-10 |
KR0182297B1 (ko) | 1999-05-01 |
JP3065274B2 (ja) | 2000-07-17 |
DE69129628D1 (de) | 1998-07-23 |
JPH0815446B2 (ja) | 1996-02-21 |
CA2080248C (fr) | 1996-10-29 |
EP0539377A4 (en) | 1993-06-16 |
AU7691691A (en) | 1991-10-30 |
IL97762A0 (en) | 1992-06-21 |
CA2080248A1 (fr) | 1991-10-11 |
USRE36335E (en) | 1999-10-12 |
JPH05507632A (ja) | 1993-11-04 |
ES2118081T3 (es) | 1998-09-16 |
EP0539377A1 (fr) | 1993-05-05 |
AU651971B2 (en) | 1994-08-11 |
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