CA2655276C - Chair having support base - Google Patents
Chair having support base Download PDFInfo
- Publication number
- CA2655276C CA2655276C CA2655276A CA2655276A CA2655276C CA 2655276 C CA2655276 C CA 2655276C CA 2655276 A CA2655276 A CA 2655276A CA 2655276 A CA2655276 A CA 2655276A CA 2655276 C CA2655276 C CA 2655276C
- Authority
- CA
- Canada
- Prior art keywords
- seat
- chair
- backrest
- support base
- lateral
- 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 - Fee Related
Links
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
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/002—Chair or stool bases
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Chairs Characterized By Structure (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
A chair in which a backrest can be largely tilted rearward within a small rotation angle range without increasing the heights of a leg body and a seat body. The leg body (1) includes a pair of left and right side-legs (9) of angular shape in side view, each having a front leg (9a) tilting forward and downward and a rear leg (9b) tilting backward and downward. The lower end of a backrest support frame (3) is so pivotally mounted on the leg body (1) at an appropriate position under the seat body (2) as to be capable of tilting rearward between the left and right side-legs (9).
Description
SPECIFICATION
CHAIR HAVING SUPPORT BASE
TECHNICAL FIELD
[0001]
The present invention relates to a chair in which the backrest is pivotally mounted to a pair of legs, a seat being supported by a support base on the side legs.
BACKGROUND OF THE INVENTION
CHAIR HAVING SUPPORT BASE
TECHNICAL FIELD
[0001]
The present invention relates to a chair in which the backrest is pivotally mounted to a pair of legs, a seat being supported by a support base on the side legs.
BACKGROUND OF THE INVENTION
[0002]
JP2002-282077A, JP2004-16516A, JP2004-33449A and JP2005-177180A disclose such a chair.
JP2002-282077A, JP2004-16516A, JP2004-33449A and JP2005-177180A disclose such a chair.
[0003]
In the chair in JP2002-282077A and JP2004-16516A, the lower end of the backrest which can be tilted rearward is pivotally mounted to legs close to the rear end of the seat at approximately equal height.
A radius of rotation from a pivot to the upper end of the backrest is limited.
In the chair in JP2002-282077A and JP2004-16516A, the lower end of the backrest which can be tilted rearward is pivotally mounted to legs close to the rear end of the seat at approximately equal height.
A radius of rotation from a pivot to the upper end of the backrest is limited.
[0004]
This increases a rotation angle when the backrest is tilted rearward. In order to tilt the backrest greatly, it will be necessary to raise the leg and seat.
This increases a rotation angle when the backrest is tilted rearward. In order to tilt the backrest greatly, it will be necessary to raise the leg and seat.
[0005]
In JP2002-282077A, the lower end of the backrest is pivotally mounted to the legs at the rear end of the seat. When the backrest is tilted rearward, the chair becomes longer and requires a large space for the chair.
In JP2002-282077A, the lower end of the backrest is pivotally mounted to the legs at the rear end of the seat. When the backrest is tilted rearward, the chair becomes longer and requires a large space for the chair.
[0006]
In JP2004-16516A, in order that the backrest may be tilted greatly, it is tilted after it is elevated by a linking mechanism. The structure is complicated and the number of parts and accessories increases.
In JP2004-16516A, in order that the backrest may be tilted greatly, it is tilted after it is elevated by a linking mechanism. The structure is complicated and the number of parts and accessories increases.
[0007]
In the documents, the right and left legs that support the seat are parallel with each other in a plan view and a front view. The seat is supported between the legs while it is close to or is in contact with the inner side surface of the legs, which makes the chair lack in lateral stability.
In the documents, the right and left legs that support the seat are parallel with each other in a plan view and a front view. The seat is supported between the legs while it is close to or is in contact with the inner side surface of the legs, which makes the chair lack in lateral stability.
[0008]
In JP2004-33449A and JP2005-177180A, the seat is supported by the support base at the upper end of the legs, and the lower end of the backrest is pivotally mounted. Even if the legs are lowered by elevating means to the lower limit, it will not be possible to go down the support base or seat supported by the support base. It will not be possible to provide a lower and large-tilted angle chair on which a person can sit in comfort posture.
In JP2004-33449A and JP2005-177180A, the seat is supported by the support base at the upper end of the legs, and the lower end of the backrest is pivotally mounted. Even if the legs are lowered by elevating means to the lower limit, it will not be possible to go down the support base or seat supported by the support base. It will not be possible to provide a lower and large-tilted angle chair on which a person can sit in comfort posture.
[0009]
The support base for supporting the seat is provided at the top of the legs. Even if four or five legs are mounted radially at the lower end, the chair will become unstable depending on one's posture.
[0011]
In view of the disadvantages, it is an object of the present invention to provide a chair in which legs and a seat are in a low position and a large-tilted angle to make the chair more stable.
It is another object of the invention to provide a chair in which the backrest is tilted rearward greatly at a small angle of rotation, the chair reducing a rearward projecting distance and achieving comfortable sitting posture.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012]
Fig. 1 is a front perspective view of a chair according to the present invention.
Fig. 2 is a front elevational view thereof.
Fig. 3 is a side elevational view thereof.
Fig. 4 is a side elevational view thereof when the backrest is tilted.
Fig. 5 is a rear elevational view thereof.
Fig. 6 is a perspective view of a leg unit.
Fig. 7 is a top plan view thereof.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
[0013]
The chair 1 comprises a leg unit 1; a seat 2 supported by the leg unit 1; a backrest support frame 3 pivotally mounted at the lower front end to the leg unit 1; a backrest 6 comprising a mesh-like backrest plate 4 and a cushion 5; and a pair of rhombus-like armrests 7 at the lower part of the backrest support frame 3.
[0014]
In Figs. 6 and 7, the leg unit 2 comprises a pair of side legs 9,9 each comprising a front leg portion 9a having a caster 8 at the front end and a rear leg portion 9b having a caster 8 at the rear end, the rear leg portion being longer than the front leg portion 9a; and a stretcher 10 between the side legs 9 and 9 at the upper ends.
[0015]
The reason that the rear leg portion 9b is longer than the front leg portion 9a is to keep the chair more stable when the backrest 6 is tilted rearward.
[0016]
The distance between the front leg portions 9a and 9a of the side legs 9 gradually becomes greater forward, and the distance between the rear leg portions 9b and 9b gradually becomes greater rearward thereby making the leg unit 1 more stable.
[0017]
A shorter shaft 11 is integrally formed with the upper end of each of the side legs 9. A mounting piece 12 projects downward from the inner side surface of the front end of the rear leg portion 9b in Fig.
3.
[0018]
The upper ends of a pair of vertical portions 10a,10a of the stretcher 10 are engaged with the shorter shafts 11 with a bolt 13. A
lateral rod 10b disposed behind the vertical portion 10a is engaged with the mounting piece 12 with a bolt 13.
[0019]
A head of the bolt 13 disposed in the shorter shaft 11 is covered with a circular cap 14 (not shown in Fig. 5) mounted in a groove of the side of the shorter shaft 11.
[0020]
A support base 15 for supporting the seat 2 is fixed at the rear end to a projection 10c in the middle of the lateral rod 10b of the stretcher 10 with a bolt 16 so that the front end of the support base 15 projects ahead of the lateral rod 10b.
[0021]
The vertical portion 1 Oa of the U-shaped stretcher 10 is fixed at the upper end to the top of the side leg 9, and the lateral rod 10b is fixed to the mounting piece 12 of the rear leg portion 9b, such that the upper end of the support base 15 is slightly higher than the top of the side leg 9.
[0022]
In Figs. 3 and 5, the backrest support frame 3 stands at the rear end of the seat; and comprises a pair of side frames 17,17 each having an arm 17a at the lower end which slants diagonally backward and an arc-like top frame 18 connecting the upper ends of the side frames 17,17 to each other.
[0023]
The distance between the right and left side frames 17 and 17 is shorter than that that between the right and left rear leg portions 9b and 9b of the pair of side legs 9. When the backrest support frame 3 is tilted rearward, the arms 17a,17a do not engage with the rear leg portions 9b and 9b.
[0024]
In Fig. 6, at the front end of each of the arms 17a, there is formed a rounded portion 17b nearly coaxial with the shorter shaft 11 at the top of the side leg 9. The rounded portion 17b is pivotally coupled to a torsion shaft (not shown) such as a known rubber torsion unit of a reclining mechanism in the support base 15 while it is forced counterclockwise anytime. Thus, the backrest support frame 3 and backrest 6 mounted thereto are tilted rearward around the support base 15 when the backrest 6 is pushed rearward by a sitting person.
[0025]
In Figs. 3 and 6, a pair of seat-support links 20,20 is pivotally mounted to a cylindrical support 19 projecting transversely from the support base 15, with a pivot shaft 21.
[0026]
Seat-support pieces 22,22 project upward from the front end of the arm 17a of the backrest support frame 3. A rectangular armrest mounting portion 23 projects with the seat-support piece 22 on the upper surface of the arm 17a.
[0027]
A seat frame 24 mounted on the lower surface of the seat 2 is pivotally mounted at the front end to the upper end of the seat support link 20, and is pivotally mounted at the rear end to the upper end of the seat-support piece 22 with a pivot shaft 26 as shown in Fig. 3.
[0028]
Thus, the front part of the seat 2 is supported by the support base 15 coupled with the leg unit 1 with the seat support link 20, and the middle part of the seat 2 by the arms 17a of the backrest support frame 3 with the seat support piece 22.
[0029]
Accordingly, in Fig. 4, when the backrest support frame 3 is tilted rearward with the backrest 6, the seat 2 is tilted rearward together. After the seat 2 is assembled, the rear part of the front leg portion 9a and the front part of the rear leg portion 9b are positioned inside the side edges of the seat 2, so that the side legs 9 of the leg unit 1 do not project sideward as shown in Fig. 2.
[0030]
As described above, in the embodiment of a chair according to the present invention, the backrest support frame 3 is pivotally mounted at the front lower end to the support base 15 coupled to the leg unit 1 increasing a rotation radius from the pivot to the upper ends of the backrest support frame 3 and backrest 6. Thus, the backrest 6 can be tilted more extensively at a small rotation angle, and a rearward projection can be minimized.
[0031]
The chair can be inclined rearward extensively without increasing heights of the leg unit 1 and seat 2 thereby providing a low and backward-tilting chair with sitting comfort.
In the embodiment, the front ends of the backrest support frame 3 and seat 2 are pivotally mounted to the support base 15 on the lateral rod 10b of the stretcher 10. The support base 15 is as high as the top of the side leg 9 reducing one's sitting height and improving sitting comfort.
[0032]
The arm 17a of the backrest support frame 3 is relatively long and tilted upward and rearward below the seat 2. The arm 17a is pivotally mounted at a position which is almost as high as the top of the side leg 9 increasing a rotation angle of the arm 17a and avoiding the rear end of the arm 17a from getting in touch with the floor.
[0033]
The distances between the front leg portions 9a and 9a and between the rear leg portions 9b and 9b become greater forward and rearward respectively, and the rear leg portions 9b are longer than the front leg portions 9a thereby keeping the chair more stable when the backrest 6 is tilted rearward.
Since the distance between the front leg portions 9a and 9a becomes greater forward, a lower limb of the sitting person is unlikely to hit the front leg portion 9a.
[0034]
In the foregoing embodiment, the arm 17a of the backrest support frame 3 is pivotally mounted to the support base 15, but may be pivotally mounted to the tops of side legs or inner side surfaces of the short shafts.
[0035]
In the foregoing embodiment, the seat 2 is tilted together with the backrest support frame 3, but the seat 2 may be fixed to the top of a leg unit including a support base.
The support base for supporting the seat is provided at the top of the legs. Even if four or five legs are mounted radially at the lower end, the chair will become unstable depending on one's posture.
[0011]
In view of the disadvantages, it is an object of the present invention to provide a chair in which legs and a seat are in a low position and a large-tilted angle to make the chair more stable.
It is another object of the invention to provide a chair in which the backrest is tilted rearward greatly at a small angle of rotation, the chair reducing a rearward projecting distance and achieving comfortable sitting posture.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012]
Fig. 1 is a front perspective view of a chair according to the present invention.
Fig. 2 is a front elevational view thereof.
Fig. 3 is a side elevational view thereof.
Fig. 4 is a side elevational view thereof when the backrest is tilted.
Fig. 5 is a rear elevational view thereof.
Fig. 6 is a perspective view of a leg unit.
Fig. 7 is a top plan view thereof.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
[0013]
The chair 1 comprises a leg unit 1; a seat 2 supported by the leg unit 1; a backrest support frame 3 pivotally mounted at the lower front end to the leg unit 1; a backrest 6 comprising a mesh-like backrest plate 4 and a cushion 5; and a pair of rhombus-like armrests 7 at the lower part of the backrest support frame 3.
[0014]
In Figs. 6 and 7, the leg unit 2 comprises a pair of side legs 9,9 each comprising a front leg portion 9a having a caster 8 at the front end and a rear leg portion 9b having a caster 8 at the rear end, the rear leg portion being longer than the front leg portion 9a; and a stretcher 10 between the side legs 9 and 9 at the upper ends.
[0015]
The reason that the rear leg portion 9b is longer than the front leg portion 9a is to keep the chair more stable when the backrest 6 is tilted rearward.
[0016]
The distance between the front leg portions 9a and 9a of the side legs 9 gradually becomes greater forward, and the distance between the rear leg portions 9b and 9b gradually becomes greater rearward thereby making the leg unit 1 more stable.
[0017]
A shorter shaft 11 is integrally formed with the upper end of each of the side legs 9. A mounting piece 12 projects downward from the inner side surface of the front end of the rear leg portion 9b in Fig.
3.
[0018]
The upper ends of a pair of vertical portions 10a,10a of the stretcher 10 are engaged with the shorter shafts 11 with a bolt 13. A
lateral rod 10b disposed behind the vertical portion 10a is engaged with the mounting piece 12 with a bolt 13.
[0019]
A head of the bolt 13 disposed in the shorter shaft 11 is covered with a circular cap 14 (not shown in Fig. 5) mounted in a groove of the side of the shorter shaft 11.
[0020]
A support base 15 for supporting the seat 2 is fixed at the rear end to a projection 10c in the middle of the lateral rod 10b of the stretcher 10 with a bolt 16 so that the front end of the support base 15 projects ahead of the lateral rod 10b.
[0021]
The vertical portion 1 Oa of the U-shaped stretcher 10 is fixed at the upper end to the top of the side leg 9, and the lateral rod 10b is fixed to the mounting piece 12 of the rear leg portion 9b, such that the upper end of the support base 15 is slightly higher than the top of the side leg 9.
[0022]
In Figs. 3 and 5, the backrest support frame 3 stands at the rear end of the seat; and comprises a pair of side frames 17,17 each having an arm 17a at the lower end which slants diagonally backward and an arc-like top frame 18 connecting the upper ends of the side frames 17,17 to each other.
[0023]
The distance between the right and left side frames 17 and 17 is shorter than that that between the right and left rear leg portions 9b and 9b of the pair of side legs 9. When the backrest support frame 3 is tilted rearward, the arms 17a,17a do not engage with the rear leg portions 9b and 9b.
[0024]
In Fig. 6, at the front end of each of the arms 17a, there is formed a rounded portion 17b nearly coaxial with the shorter shaft 11 at the top of the side leg 9. The rounded portion 17b is pivotally coupled to a torsion shaft (not shown) such as a known rubber torsion unit of a reclining mechanism in the support base 15 while it is forced counterclockwise anytime. Thus, the backrest support frame 3 and backrest 6 mounted thereto are tilted rearward around the support base 15 when the backrest 6 is pushed rearward by a sitting person.
[0025]
In Figs. 3 and 6, a pair of seat-support links 20,20 is pivotally mounted to a cylindrical support 19 projecting transversely from the support base 15, with a pivot shaft 21.
[0026]
Seat-support pieces 22,22 project upward from the front end of the arm 17a of the backrest support frame 3. A rectangular armrest mounting portion 23 projects with the seat-support piece 22 on the upper surface of the arm 17a.
[0027]
A seat frame 24 mounted on the lower surface of the seat 2 is pivotally mounted at the front end to the upper end of the seat support link 20, and is pivotally mounted at the rear end to the upper end of the seat-support piece 22 with a pivot shaft 26 as shown in Fig. 3.
[0028]
Thus, the front part of the seat 2 is supported by the support base 15 coupled with the leg unit 1 with the seat support link 20, and the middle part of the seat 2 by the arms 17a of the backrest support frame 3 with the seat support piece 22.
[0029]
Accordingly, in Fig. 4, when the backrest support frame 3 is tilted rearward with the backrest 6, the seat 2 is tilted rearward together. After the seat 2 is assembled, the rear part of the front leg portion 9a and the front part of the rear leg portion 9b are positioned inside the side edges of the seat 2, so that the side legs 9 of the leg unit 1 do not project sideward as shown in Fig. 2.
[0030]
As described above, in the embodiment of a chair according to the present invention, the backrest support frame 3 is pivotally mounted at the front lower end to the support base 15 coupled to the leg unit 1 increasing a rotation radius from the pivot to the upper ends of the backrest support frame 3 and backrest 6. Thus, the backrest 6 can be tilted more extensively at a small rotation angle, and a rearward projection can be minimized.
[0031]
The chair can be inclined rearward extensively without increasing heights of the leg unit 1 and seat 2 thereby providing a low and backward-tilting chair with sitting comfort.
In the embodiment, the front ends of the backrest support frame 3 and seat 2 are pivotally mounted to the support base 15 on the lateral rod 10b of the stretcher 10. The support base 15 is as high as the top of the side leg 9 reducing one's sitting height and improving sitting comfort.
[0032]
The arm 17a of the backrest support frame 3 is relatively long and tilted upward and rearward below the seat 2. The arm 17a is pivotally mounted at a position which is almost as high as the top of the side leg 9 increasing a rotation angle of the arm 17a and avoiding the rear end of the arm 17a from getting in touch with the floor.
[0033]
The distances between the front leg portions 9a and 9a and between the rear leg portions 9b and 9b become greater forward and rearward respectively, and the rear leg portions 9b are longer than the front leg portions 9a thereby keeping the chair more stable when the backrest 6 is tilted rearward.
Since the distance between the front leg portions 9a and 9a becomes greater forward, a lower limb of the sitting person is unlikely to hit the front leg portion 9a.
[0034]
In the foregoing embodiment, the arm 17a of the backrest support frame 3 is pivotally mounted to the support base 15, but may be pivotally mounted to the tops of side legs or inner side surfaces of the short shafts.
[0035]
In the foregoing embodiment, the seat 2 is tilted together with the backrest support frame 3, but the seat 2 may be fixed to the top of a leg unit including a support base.
Claims (5)
1. A chair comprising:
a seat;
a leg unit supporting the seat and comprising a pair of side legs, each of the side legs comprising a front leg portion and a rear leg portion, a distance between the front leg portions gradually becoming greater forward, a distance between the rear leg portions gradually becoming greater rearward, each of the rear leg portions being longer than each of the front leg portion;
a U-shaped stretcher provided between tops of the side legs and including a lateral beam having lateral portions at both side ends of a lateral rod; and a support base supporting the seat which is fixed on a lateral beam between the lateral portions.
a seat;
a leg unit supporting the seat and comprising a pair of side legs, each of the side legs comprising a front leg portion and a rear leg portion, a distance between the front leg portions gradually becoming greater forward, a distance between the rear leg portions gradually becoming greater rearward, each of the rear leg portions being longer than each of the front leg portion;
a U-shaped stretcher provided between tops of the side legs and including a lateral beam having lateral portions at both side ends of a lateral rod; and a support base supporting the seat which is fixed on a lateral beam between the lateral portions.
2. The chair of claim 1 wherein the stretcher comprises the lateral beam and a vertical portion at each end, the support base being provided on an upper surface of the lateral beam, upper ends of the vertical portions being fixed to a top of the pair of side legs.
3. The chair of claim 2 wherein the vertical portion extends upward and forward to allow the lateral beam to be positioned behind the top of the side legs.
4. The chair of claim 1 wherein the front ends of a pair of arms of a backrest support frame is pivotally mounted to each end of the support base so that the backrest support frame can be tilted rearward.
5. The chair of claim 3 wherein a front part of the support base projects ahead of a top of the side legs, front side ends of the seat being pivotally mounted to side ends of side legs with a lateral pivot shaft, side ends of a rear part of the seat being pivotally mounted to the arms of the backrest support frame with a lateral pivot shaft.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006162632A JP4926551B2 (en) | 2006-06-12 | 2006-06-12 | Chair |
| JP2006-162632 | 2006-06-12 | ||
| JP2006-162631 | 2006-06-12 | ||
| JP2006162631A JP4964506B2 (en) | 2006-06-12 | 2006-06-12 | Chair |
| JP2006163383A JP4964507B2 (en) | 2006-06-13 | 2006-06-13 | Chair |
| JP2006-163383 | 2006-06-13 | ||
| PCT/JP2007/061739 WO2007145170A1 (en) | 2006-06-12 | 2007-06-11 | Chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2655276A1 CA2655276A1 (en) | 2007-12-21 |
| CA2655276C true CA2655276C (en) | 2013-01-22 |
Family
ID=38831684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2655276A Expired - Fee Related CA2655276C (en) | 2006-06-12 | 2007-06-11 | Chair having support base |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20090195043A1 (en) |
| EP (1) | EP2033541A4 (en) |
| JP (1) | JP4964506B2 (en) |
| CN (1) | CN101500455B (en) |
| CA (1) | CA2655276C (en) |
| WO (1) | WO2007145170A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6494088B2 (en) * | 2015-01-16 | 2019-04-03 | 株式会社オカムラ | Reaction force mechanism and chair using the same |
| US11672343B2 (en) | 2021-07-14 | 2023-06-13 | Anthro Form, Llc | 4-star base for a chair |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1117835B (en) * | 1956-07-23 | 1961-11-23 | William H Reinholz | Ground anchor for children's exercise chairs |
| US4303219A (en) * | 1979-12-14 | 1981-12-01 | Carrick Virgil P | Swivel-rocker base |
| JPS59114051U (en) * | 1983-01-24 | 1984-08-01 | 株式会社岡村製作所 | A chair where the seat and backrest tilt in conjunction with each other. |
| IT1161498B (en) * | 1983-07-12 | 1987-03-18 | Castelli Spa | CHAIR |
| US5967609A (en) * | 1996-11-18 | 1999-10-19 | Hwe, Inc. | Reclining chair with guide rail system |
| JPH10276853A (en) * | 1997-04-02 | 1998-10-20 | Chuo Katan Kogyo Kk | Stacking chair |
| DE19754829A1 (en) * | 1997-12-10 | 1999-07-08 | Wilkhahn Wilkening & Hahne | Seat with backrest |
| US5868468A (en) * | 1998-04-24 | 1999-02-09 | Wang; Chin-Chen | Chair with adjustable inclination |
| US6030037A (en) * | 1998-05-15 | 2000-02-29 | Steelcase Inc. | Horizontally nestable chair |
| US6412869B1 (en) * | 1999-05-27 | 2002-07-02 | Steelcase Development Corporation | Nestable synchrotilt chair |
| JP2002282077A (en) | 2001-03-23 | 2002-10-02 | Okamura Corp | Chair |
| US6609755B2 (en) * | 2001-06-15 | 2003-08-26 | Hon Technology Inc. | Ergonomic chair |
| US6595584B1 (en) * | 2002-01-16 | 2003-07-22 | John W. Caldwell | Seating for individuals and for groups of individuals with various degrees of accommodation and distraction |
| JP4154934B2 (en) | 2002-06-17 | 2008-09-24 | 松下電工株式会社 | Massage chair |
| JP2004033449A (en) | 2002-07-03 | 2004-02-05 | Kokuyo Co Ltd | Lever attaching structure for chair |
| JP2004057572A (en) * | 2002-07-30 | 2004-02-26 | Itoki Crebio Corp | Chair that can be connected in a row |
| USD512846S1 (en) * | 2003-05-19 | 2005-12-20 | Hni Technologies Inc. | Mobile guest chair with arms |
| JP4589621B2 (en) | 2003-12-19 | 2010-12-01 | 株式会社岡村製作所 | Chair |
| USD543040S1 (en) * | 2005-11-10 | 2007-05-22 | Okamura Corporation | Chair |
| USD543042S1 (en) * | 2005-11-10 | 2007-05-22 | Okamura Corporation | Chair |
| USD542549S1 (en) * | 2005-11-10 | 2007-05-15 | Okamura Corporation | Chair |
-
2006
- 2006-06-12 JP JP2006162631A patent/JP4964506B2/en active Active
-
2007
- 2007-06-11 US US12/304,523 patent/US20090195043A1/en not_active Abandoned
- 2007-06-11 CN CN2007800300540A patent/CN101500455B/en not_active Expired - Fee Related
- 2007-06-11 EP EP07745028.6A patent/EP2033541A4/en not_active Withdrawn
- 2007-06-11 WO PCT/JP2007/061739 patent/WO2007145170A1/en active Search and Examination
- 2007-06-11 CA CA2655276A patent/CA2655276C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP2033541A1 (en) | 2009-03-11 |
| CN101500455B (en) | 2013-05-08 |
| CA2655276A1 (en) | 2007-12-21 |
| US20090195043A1 (en) | 2009-08-06 |
| CN101500455A (en) | 2009-08-05 |
| JP4964506B2 (en) | 2012-07-04 |
| WO2007145170A1 (en) | 2007-12-21 |
| EP2033541A4 (en) | 2014-01-22 |
| JP2007330337A (en) | 2007-12-27 |
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