WO2010097818A1 - Device for synchronizing the tilt of a chair back and seat - Google Patents
Device for synchronizing the tilt of a chair back and seat Download PDFInfo
- Publication number
- WO2010097818A1 WO2010097818A1 PCT/IT2009/000065 IT2009000065W WO2010097818A1 WO 2010097818 A1 WO2010097818 A1 WO 2010097818A1 IT 2009000065 W IT2009000065 W IT 2009000065W WO 2010097818 A1 WO2010097818 A1 WO 2010097818A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frame
- seat
- crank
- chair back
- tilt
- Prior art date
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
- 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
-
- 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
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
-
- 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
- A47C7/02—Seat parts
Definitions
- the present invention concerns to a device for synchronizing the tilt of the back and seat of a chair, of the type wherein the tilt angle assumed by the seat frame relatively to the horizontal line is correlated to the tilt angle assumed by the corresponding frame of the chair back thanks to a kinematic system with articulated rods, such that the user, thanks to his/her own weight and to his/her rest on the chair back, could find a convenient tilt adjustment of such frames relatively to the ground, simply sitting on the chair.
- crank rotation may be caused indirectly by the frame rotation of the chair back, constrained to one of the cranks, or to the seat frame, by an articulated system.
- the International Patent Application WO-A- 2008/149224 in the name of MALENOTTI describes such a device, wherein the frame of the chair back is constrained to the seat frame by a leverage causing the roto - translation on such a seat frame, when the user causes the rotation of the frame of the chair back itself.
- the shape of the four — bar linkage constraining the seat frame to the support integral with the base is of the type allowing such a roto — translation, leading the seat from a starting position, substantially horizontal, with the chair back erected, to a final position, with the chair back reclined at the rear, wherein the seat is withdrawn towards the chair back and its front portion is lifted, even if to few degrees, relatively to its rear portion.
- Such a MALENOTTI device while allowing an efficient synchronization of the chair back tilt with the seat tilt, is mechanically complex and then markedly burdensome to manufacture.
- the device described in the Application WO-A- 2008/149224 does not allow obtaining, during the device designing and producing steps, desired changes in the initial or final tilt angle of the seat simply, because of the multitude of components that would be newly designed and replaced.
- the DUPART device although extremely simple, provides that while the tilt angle of the chair back is increasing, relatively to its rest position, the rear portion of the seat would raise relatively to the corresponding front portion, with a certain worsening of the posture achievable by the user, when the latter would like to lean against the chair back. It is therefore an object of the present invention to realize a device for synchronizing the tilt of a back and seat of a chair of the type wherein while the tilt angle of the chair back is increasing, the corresponding raising of the front portion of the seat is occurring relatively to the rear portion, that would not produce the known art drawbacks and thereby being structurally simple and easy and efficient to set up. Another object of the present invention is to provide a device, easily adjustable in the designing step, that would not be expensive to manufacture and at the same time allowing the user to find a correct posture relating to his/her own weight.
- the device for synchronizing the tilt of a chair back and seat is of the type wherein while the tilt angle of the chair back is increasing relatively to its unloaded position, the raising of the front portion of the seat is occurring relatively to the corresponding rear portion, and comprises a frame of the chair back, a frame of the seat and a support integral with the base of the chair, as well as at least one first crank, integral with the frame of the chair back, and hinged at the rear to the frame of the seat and to the support integral to the base, and at least one second crank, hinged at the front to the frame of the seat and to the support itself.
- Such a first crank and such a second crank, with the afore said frame of the seat constitute an articulated quadrilateral, wherein the first and the second crank lie substantially on two reciprocally skew lines.
- the seat frame or anyway the seat, is movable between an initial position, preferably horizontal, corresponding to the lowest tilt of the frame of the chair back, and a final position, corresponding to the highest tilt of the frame of the chair back, and the afore said articulated quadrilateral is shaped such that when the seat frame, or the seat, is in its final position, the hinge point of the second crank to the frame of the seat will vertically raise of a higher amount relatively to the hinge point of the first crank to the frame of the seat and such that the hinge point of the second crank to the frame of the seat will assume a higher elevation relatively to the elevation of the hinge point of the first crank to the seat frame, such that the seat will be raised in its front portion more than in its rear portion.
- the seat frame is tilted, relatively to the horizontal line, of an angle comprised between 4° and 8°, when the afore said seat frame is in its final position.
- the afore said second crank is tilted relatively to the horizontal line of an angle always lower than the tilt angle of the first crank, and the afore said first crank has a lower length than the afore said second crank, such that to easily allow the raising of the front portion of the seat, when the chair back tilt is increasing, towards the rear portion of the chair.
- figure 1 is a schematic side section view of a device according to the present invention, illustrated with the frame of the chair back and the frame of the seat in their unloaded initial position;
- figure 2 is a schematic side section view of the device shown in figure
- figure 3 is a kinematic scheme showing the device operation according to the present invention.
- the device for synchronizing the tilt of a chair back and seat comprises a support 1 integral with the chair base, a frame of the seat 2, constrained to the support 1 by at least one first rear crank 3, and at least one second front crank 4, as well as a frame of the chair back 5 (only the lower portion thereof being visible in the figures), integrally constrained with the rear crank 3.
- crank is intended such a swivel body, having ideally a rod shape, interconnecting a fixed pin to a mobile pin, in an articulated system.
- the two cranks 3 and 4, the frame of the seat 2, and the corresponding pins 6, 7, 8, 9, constitute an articulated quadrilateral, as can be seen in the figures.
- the so far described cranks 3, 4 could actually be rocker levers in the articulated quadrilateral defined by the frame of the seat 2 and the afore said support 1 too, while the frame of the seat 2 constitutes the rod of such a articulated quadrilateral.
- first (rear) crank 3 is constrained to the support 1 thanks to a fixed pin 6, and it is constrained in the rear portion of the frame of the seat 2 thanks to a pin 7.
- second (front) crank 6 is constrained to the support by a pin 8 and it is constrained to the front portion of the frame of the seat 2, by a pin 9. It has to be observed that with the terms "front” and “rear” are intended such regions of the seat frame respectively the most distant from, and the nearest to, the frame of the chair back 5.
- the frame of the chair back 5, in the embodiment herein illustrated is realized in a single piece with the corresponding rear crank 3, such that a portion of the frame of the chair back 5 itself, hinged to the pin 6, fixed to the support 1 of the chair, and to the pin 7, fixed to the frame of the seat 2, thereby will constitute such a crank 3.
- the synchronization device herein illustrated further comprises elastic means 11, adapted to apply a returning action for the frame of the chair back 5, and/or for the frame of the seat 2, towards the support 1.
- such an elastic means comprise a helical spring 11, acting in compression, constrained to an appropriate pin 10, integral with the support 1 , and to the pin 7 integral with the frame of the seat 2. Therefore the spring 11 tends to draw up the pins 7 and 10, exercising a returning force acting on the frame of the seat 2 towards the support 1.
- the spring 11, the resistance thereof must so be won to allow the tilting of the chair back and of the seat of the chair provided with the device herein illustrated, will then determine an initial position of the device, wherein the frame of the chair back 5 is in its position of lowest tilt relatively to the horizontal line, because the returning action of the spring 11 is exercised to the crank 3 too, that is just integral with the frame of the chair back 5.
- the figures 1 and 2 further show a plate 12 constrained to the crank 3, and then to the frame of the chair back 5, by the afore said pins 6 and 7.
- a plate 12 has the function of acting as a rabbet element for the apposite stopping retainers, obtained over appropriate zones of the support 1 of the chair, so that to define the stop points for the swing of the frame of the chair back 5 and the frame of the seat 2.
- the first and the second crank 3 and 4, or better the axes connecting in such cranks 3, 4 respectively the corresponding hinging points lie over reciprocally skew lines, that is their relative tilt angle is not null.
- crank is not properly intended the real body, in its whole, that is used in the device of the present invention to connect the support integral to the chair base to the seat frame, but it is intended the ideal portion of such a body acting as a crank in a articulated quadrilateral composed exactly by the two cranks 3, 4 and the frame of the seat 2. That is, in the device of the present invention, with the term crank is herein intended such a body, or body portion, ideally having a rod shape, that is hinged to the support 1 integral to the base fixed to the chair and to the movable frame of the seat 2, freely to rotate around such pins 6, 7.
- crank 3 is, in the particular embodiment of the present invention herein illustrated, obtained as a whole with the frame of the chair back 5. It has further to be observed that, also if it has been so far described a synchronizing device having only two cranks 3, 4, it is further possible to realize a similar synchronizing device, according to the present invention, having more parallel cranks, without therefore falling out from the treatise so far followed.
- each crank 3, 4 of the device represented in the figures may be matched to a corresponding crank parallel to this, adapted to allow a better distribution of the load, acting over the frame of the seat 2, that discharges on the support 1 of the chair.
- the hinge points 6, 8 of the cranks 3, 4 to the support 1 integral with the chair base may be selected such that the frame of the seat 2 could be movable between an initial position, for example wherein the seat or the corresponding frame 2 is substantially horizontal, and the frame of the chair back 5 is in its lowest tilt position relatively to the horizontal line, and a final position, wherein the seat, or the corresponding frame 2, is raised mostly in its front portion relatively to the corresponding rear portion, that is the front portion exhibits a vertical component movement higher than that in the rear portion, and the frame of the chair back 5 has reached its highest tilt relatively to the horizontal line, eventually determined by stopping retainers for the tilt of such a frame 5, not shown.
- this solution could be realized using a rear crank 3 having different dimensions from the front crank 4, and setting the corresponding hinge points shifted on the support I 9 as well as imposing the angle ⁇ formed by the front crank 4 relatively to the horizontal line to be always lower than the angle ⁇ determined by the rear crank 3 relatively to the horizontal line.
- such an angle ⁇ between the rear crank 3 and the horizontal line may change between a value chosen in the range 55° - 75°, when the frame of the seat 2 is in its mentioned initial position, and 90°, when the frame of the seat 2 is in its final position.
- the device may be shaped such that the hinge point 9 of the front crank 4 to the frame of the seat 2 is substantially at the same elevation of the elevation of the hinge point 7 of the rear crank 3 to the frame of the seat 2, when the latter is in its afore said initial position, and such that it is at a higher elevation than the elevation of the hinge point 7, when the afore said frame of the seat 2 is in its final position.
- the angle ⁇ that the frame of the seat 2 makes relatively to the horizontal line, is comprised between 4° and 8°, and hence the front portion of the seat could be at a higher elevation than the elevation of the corresponding rear portion, such that the seat tilt is substantially comprised between
- the synchronizing device of the present invention When the chair is not loaded, that is when the user is not seated, the synchronizing device of the present invention is maintained in its initial position by the spring 11 that, acting on the pin 7, movable together with the frame of the seat 2, and on the pin 10, fixed on the support 1, will tend to rotate the rear crank 3 around the pin 6, until it will reach the initial tilt predefined angle ⁇ , preferably comprised between 55° and 75°.
- the articulated quadrilateral formed by the two cranks 3, 4 and the frame of the seat 2 is shaped such that the frame of the seat 2 is substantially horizontal and the frame of the chair back 5 is substantially vertical, in its lowest tilt position.
- the tilt of the frame of the seat 2 and the frame of the chair back 5 are, at least partially, function of the user weight, because such a weight partially determines both the force the user is applying on the chair back, and the resistance offered by the frame of the seat 2 against its rotation; the resistance being caused not only by the force applied by the spring 11, but also by the user weight on the seat itself.
- the highest tilt angle ⁇ the frame of the seat 2 can reach relatively to the horizontal line is determined by the highest tilt angle the frame of the chair back 5 can reach, in the afore said final position obtained by the frame of the seat 2, thanks to the applied user load, and such an angle ⁇ may be preferably comprised between 4° and 8° relatively to the horizontal line, to always guarantee an optimal posture for the user himself.
- the highest tilt angle of the frame of the chair back 5, as mentioned, may be determined by the stopping retainers acting conveniently on the rear crank 3, or the frame 5 itself, and it cannot exceed the angle corresponding to the tilt angle ⁇ of the rear crank 3 substantially equal to 90° relatively to the horizontal line, beyond which the crank 3 may again rotate, causing jams in the device itself.
- the spring 11 will return the several components of the synchronizing device in the afore said initial position, particularly inducing the rear crank 3 rotation, adapted to bring back the seat 2 in its initial position, substantially horizontal.
- the device of the present invention is simply to realize by the producer, handy to adjust for the designer and simply and efficient for the final user usage.
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- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020117010314A KR101564800B1 (en) | 2009-02-25 | 2009-02-25 | Device for synchronizing the tilt of a chair back and seat |
PCT/IT2009/000065 WO2010097818A1 (en) | 2009-02-25 | 2009-02-25 | Device for synchronizing the tilt of a chair back and seat |
DE202009018847U DE202009018847U1 (en) | 2009-02-25 | 2009-02-25 | Device for synchronizing the tilting of a chair backrest and a seat |
EP09787650.2A EP2375938B2 (en) | 2009-02-25 | 2009-02-25 | Device for synchronizing the tilt of a chair back and seat |
CN200980100707.7A CN101951810B (en) | 2009-02-25 | 2009-02-25 | Device for synchronizing the tilt of a chair back and seat |
US13/148,618 US8973995B2 (en) | 2009-02-25 | 2009-02-25 | Device for synchronizing the tilt of a chair back and seat |
BRPI0922896-9A BRPI0922896B1 (en) | 2009-02-25 | 2009-02-25 | DEVICE FOR SYNCHRONIZING THE SLOPE OF THE BACKREST AND SEATING A CHAIR |
CA2751696A CA2751696C (en) | 2009-02-25 | 2009-02-25 | Device for synchronizing the tilt of a chair back and seat |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IT2009/000065 WO2010097818A1 (en) | 2009-02-25 | 2009-02-25 | Device for synchronizing the tilt of a chair back and seat |
DE202009018847U DE202009018847U1 (en) | 2009-02-25 | 2009-02-25 | Device for synchronizing the tilting of a chair backrest and a seat |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010097818A1 true WO2010097818A1 (en) | 2010-09-02 |
Family
ID=53441577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IT2009/000065 WO2010097818A1 (en) | 2009-02-25 | 2009-02-25 | Device for synchronizing the tilt of a chair back and seat |
Country Status (7)
Country | Link |
---|---|
US (1) | US8973995B2 (en) |
EP (1) | EP2375938B2 (en) |
KR (1) | KR101564800B1 (en) |
CN (1) | CN101951810B (en) |
CA (1) | CA2751696C (en) |
DE (1) | DE202009018847U1 (en) |
WO (1) | WO2010097818A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9215932B2 (en) | 2010-09-08 | 2015-12-22 | Hilary Rolf Birkbeck | Slide chair action |
US9241570B2 (en) | 2010-08-25 | 2016-01-26 | L&P Property Management Company | Tilt mechanism for a chair and chair |
US9554652B2 (en) | 2010-09-15 | 2017-01-31 | Hilary Rolf Birkbeck | Link chair action |
US9622580B2 (en) | 2013-02-27 | 2017-04-18 | L&P Property Management Company | Tilt mechanism for a chair and chair |
IT202000002332A1 (en) | 2020-02-06 | 2021-08-06 | Donati Spa | SWINGING MECHANISM FOR A CHAIR OR ARMCHAIR |
US11096492B2 (en) | 2017-10-06 | 2021-08-24 | Co.Fe.Mo. Industrie S.R.L. | Oscillation system for chairs |
EP3903642A1 (en) | 2016-06-10 | 2021-11-03 | CO.FE.MO. Industrie S.R.L. | Articulation system for chairs |
IT202200001481A1 (en) | 2022-01-28 | 2023-07-28 | Donati Spa | SWING MECHANISM FOR A CHAIR OR CHAIR |
US12022950B2 (en) | 2020-02-06 | 2024-07-02 | Donati S.P.A. | Oscillation mechanism for a chair or armchair |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2788083C (en) * | 2010-02-26 | 2017-10-24 | Donati S.P.A. | Device for synchronizing the seat and backrest of a chair |
DE202013102059U1 (en) * | 2013-05-11 | 2014-08-12 | Bock 1 Gmbh & Co. Kg | synchronous mechanism |
EP2886015B1 (en) | 2013-12-17 | 2016-07-13 | Donati S.p.A. | Chair with adjustable backrest |
WO2015145216A1 (en) | 2014-03-28 | 2015-10-01 | Donati S.P.A. | Device for synchronizing the tilt of the backrest and the seat of a chair |
EP3160303A1 (en) | 2014-06-30 | 2017-05-03 | Donati S.p.A. | Mechanism for changing the tilt of the backrest having regard to the seat of a chair |
BR112017022038B1 (en) | 2015-04-13 | 2021-11-03 | Steelcase Inc. | SEAT ARRANGEMENT |
US11259637B2 (en) | 2015-04-13 | 2022-03-01 | Steelcase Inc. | Seating arrangement |
US10194750B2 (en) | 2015-04-13 | 2019-02-05 | Steelcase Inc. | Seating arrangement |
KR102018349B1 (en) | 2016-11-30 | 2019-09-06 | 한국생산기술연구원 | Slide chair tilt sink in response to weight |
IT201700031737A1 (en) * | 2017-03-22 | 2018-09-22 | Co Fe Mo Ind S R L | ARTICULATION SYSTEM FOR CHAIRS |
PL3556252T3 (en) | 2018-04-17 | 2020-11-16 | L&P Property Management Company | Tilt mechanism for a chair and chair |
WO2019204714A1 (en) | 2018-04-19 | 2019-10-24 | Cramer Llc | Chair having pliable backrest and methods for same |
EP3927215A4 (en) | 2019-02-21 | 2023-03-15 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
US11617444B2 (en) | 2020-03-02 | 2023-04-04 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
US11812870B2 (en) | 2021-02-10 | 2023-11-14 | Steelcase Inc. | Body support structure |
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DE3735256A1 (en) | 1987-10-17 | 1989-04-27 | Ljubomir Nikov | Chair or armchair with synchronously adjustable inclination of backrest and seat |
DE19607136A1 (en) * | 1995-02-28 | 1996-08-29 | Eckhard Hansen | Chair with tiltable seat and backrest |
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EP1440632A1 (en) * | 2003-01-22 | 2004-07-28 | Klöber Gmbh & Co. | Chair with quick-adjustable force accumulator |
DE202005011725U1 (en) * | 2005-07-27 | 2006-12-07 | Sander, Armin | Chair, especially office chair |
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FR2045120A5 (en) | 1969-06-03 | 1971-02-26 | Dupart Jean | |
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JPH06500944A (en) | 1991-05-24 | 1994-01-27 | エクウス・マーケティング・アーゲー | work chairs, especially office chairs |
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JP2000236977A (en) * | 1999-02-23 | 2000-09-05 | Plus Property Corp | Tilt device of chair |
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AR026126A1 (en) † | 1999-06-04 | 2003-01-29 | Softview Comp Products Corp | A RECLINABLE CHAIR |
JP3638855B2 (en) * | 2000-06-12 | 2005-04-13 | スガツネ工業株式会社 | Chair with backrest |
IT1320403B1 (en) * | 2000-06-06 | 2003-11-26 | Pro Cord Srl | CHAIR WITH SEAT AND BACKREST OSCILLATING IN A SYNCHRONIZED WAY. |
DE10309922A1 (en) * | 2003-03-07 | 2004-09-16 | Dauphin Entwicklungs- Und Beteiligungs-Gmbh | Chair, especially office chair |
JP4856911B2 (en) * | 2005-08-18 | 2012-01-18 | 株式会社イトーキ | Chair with backrest |
DE202007001395U1 (en) | 2007-01-31 | 2008-06-05 | Sander, Armin | Chair, especially office chair |
JP5386071B2 (en) * | 2007-02-05 | 2014-01-15 | タカノ株式会社 | Chair |
ITTO20070398A1 (en) * | 2007-06-06 | 2008-12-07 | Malenotti S R L | "CHAIR WITH OSCILLATING BACKREST" |
-
2009
- 2009-02-25 DE DE202009018847U patent/DE202009018847U1/en not_active Expired - Lifetime
- 2009-02-25 WO PCT/IT2009/000065 patent/WO2010097818A1/en active Application Filing
- 2009-02-25 EP EP09787650.2A patent/EP2375938B2/en active Active
- 2009-02-25 CN CN200980100707.7A patent/CN101951810B/en active Active
- 2009-02-25 US US13/148,618 patent/US8973995B2/en active Active
- 2009-02-25 CA CA2751696A patent/CA2751696C/en active Active
- 2009-02-25 KR KR1020117010314A patent/KR101564800B1/en active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3735256A1 (en) | 1987-10-17 | 1989-04-27 | Ljubomir Nikov | Chair or armchair with synchronously adjustable inclination of backrest and seat |
DE19607136A1 (en) * | 1995-02-28 | 1996-08-29 | Eckhard Hansen | Chair with tiltable seat and backrest |
EP1256294A2 (en) * | 2001-05-11 | 2002-11-13 | ITO Design und Marketing Armin Sander | Chair, particularly office-chair |
EP1440632A1 (en) * | 2003-01-22 | 2004-07-28 | Klöber Gmbh & Co. | Chair with quick-adjustable force accumulator |
DE202005011725U1 (en) * | 2005-07-27 | 2006-12-07 | Sander, Armin | Chair, especially office chair |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9241570B2 (en) | 2010-08-25 | 2016-01-26 | L&P Property Management Company | Tilt mechanism for a chair and chair |
US9215932B2 (en) | 2010-09-08 | 2015-12-22 | Hilary Rolf Birkbeck | Slide chair action |
US9554652B2 (en) | 2010-09-15 | 2017-01-31 | Hilary Rolf Birkbeck | Link chair action |
US9622580B2 (en) | 2013-02-27 | 2017-04-18 | L&P Property Management Company | Tilt mechanism for a chair and chair |
EP3903642A1 (en) | 2016-06-10 | 2021-11-03 | CO.FE.MO. Industrie S.R.L. | Articulation system for chairs |
US11096492B2 (en) | 2017-10-06 | 2021-08-24 | Co.Fe.Mo. Industrie S.R.L. | Oscillation system for chairs |
IT202000002332A1 (en) | 2020-02-06 | 2021-08-06 | Donati Spa | SWINGING MECHANISM FOR A CHAIR OR ARMCHAIR |
DE202020005916U1 (en) | 2020-02-06 | 2023-04-13 | Donati S.P.A. | Swing mechanism for a chair or armchair |
US12022950B2 (en) | 2020-02-06 | 2024-07-02 | Donati S.P.A. | Oscillation mechanism for a chair or armchair |
IT202200001481A1 (en) | 2022-01-28 | 2023-07-28 | Donati Spa | SWING MECHANISM FOR A CHAIR OR CHAIR |
Also Published As
Publication number | Publication date |
---|---|
CA2751696A1 (en) | 2010-09-02 |
CN101951810A (en) | 2011-01-19 |
DE202009018847U1 (en) | 2013-11-14 |
US20120056461A1 (en) | 2012-03-08 |
CN101951810B (en) | 2014-09-03 |
CA2751696C (en) | 2016-11-08 |
EP2375938A1 (en) | 2011-10-19 |
EP2375938B1 (en) | 2012-09-19 |
KR20110128265A (en) | 2011-11-29 |
EP2375938B2 (en) | 2020-01-08 |
US8973995B2 (en) | 2015-03-10 |
KR101564800B1 (en) | 2015-10-30 |
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