US20050017560A1 - Device for adjusting the components of a chair - Google Patents

Device for adjusting the components of a chair Download PDF

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Publication number
US20050017560A1
US20050017560A1 US10/240,160 US24016004A US2005017560A1 US 20050017560 A1 US20050017560 A1 US 20050017560A1 US 24016004 A US24016004 A US 24016004A US 2005017560 A1 US2005017560 A1 US 2005017560A1
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US
United States
Prior art keywords
latching
component
guide path
backrest
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.)
Abandoned
Application number
US10/240,160
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English (en)
Inventor
Ugur Bastas
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.)
Giroflex Entwicklungs AG
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
Assigned to GIROFLEX-ENTWICKLUNGS-AG reassignment GIROFLEX-ENTWICKLUNGS-AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BASTAS, UGAR
Publication of US20050017560A1 publication Critical patent/US20050017560A1/en
Abandoned 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
    • 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
    • A47C7/402—Support for the head or the back for the back adjustable in height

Definitions

  • the invention relates to a device for adjusting one component of a chair, in particular an office chair, with respect to another component of the chair, the device being provided with a latching unit by means of which one of the two components can be arranged in positions, which can be changed in latching steps, with respect to the other component, the latching unit having a guide path which is arranged on one of the two components and on the other component a latching element is provided which can be arranged in the guide path in latching positions which predetermine positions of one component with respect to the other component.
  • the publication WO-A 98/09553 discloses a device for regulating the height of the backrest, in which the backrest which can be adjusted in height relative to a seat plate is arranged on a fixed support element.
  • the support element comprises a guide part which is orientated in the vertical direction and in profile cross section is of approximately U-shape design, a grid rail which is arranged in the said guide part and a sliding rail which is guided displaceably in the guide part and also a spring element which can be brought into engagement with it.
  • the spring element as two contact arms which can be brought into engagement with the two toothed arrangements of the grid rail, which are arranged lying opposite the spring element and are each open on one side, the said contact arms, when the backrest is raised, latching in any desired position into the toothed arrangement as a consequence of the spring-elastic restoring force.
  • the backrest can also be adjusted upwards from the particular position.
  • both possibilities mean that satisfactory guidance of the contact arms in the toothed arrangement can no longer be ensured and adjustment of the backrest is no longer possible.
  • the invention is therefore based on the object of improving a device of the type mentioned in the introduction to the effect that a functionally reliable latching procedure between two components of the chair, in particular of a backrest with respect to a seat body, can be provided using relatively simple structural means.
  • this object is achieved in that the guide path is of essentially groove-shaped design at least in the region of the latching positions, and the latching element is guided in the groove-shaped guide path. Since the latching element itself does not have to be acted upon by a force, but is intended to be forcibly guided by the profile of the guide path, a particularly functionally reliable guidance of components of a chair is possible. In addition, unlike in WO-A 98/09553, just one latching element is required in devices according to the invention. The reduction to fewer moveable components has a positive effect on the functional reliability of the device and makes possible a compact arrangement and simple installation.
  • the groove of the guide path is of a width which permits only slight play of the latching element with regard to directions transverse to the course of the guide path. At least in the region of the latching section, the groove should therefore be only slightly wider then a width of the latching element.
  • the guidance between the latching element in the guide path with regard to the instantaneous direction of relative movement between the latching element in the guide path has essentially just one degree of freedom, namely the possibility of relative movement of the latching element in the guide path in the direction of the course of the guide path.
  • the latching element can therefore be guided in an essentially form-fitting manner, as a result of which long lasting reliable guide elements can be achieved in a structurally particularly simple manner.
  • the latching element can be designed as a pivotable lever which has a latching pin which is arranged in the guide path.
  • the pivot-mounting enables, in a structurally particularly simple and functionally reliable manner, the latching element to be guided in the guide path and thus relative movement to be produced between the latching element and the guide-path element.
  • the device according to the invention is used for adjusting the height of a backrest of an office chair.
  • the device according to the invention it is equally possible to use the device according to the invention to make it possible for other chair components to be adjusted, for example an arm rest of a chair to be adjusted with respect to the seat surface.
  • Other examples include adjustment of the seat depth of the backrest with respect to the seat surface or else adjustment of the seat height of the sea surface with respect to a base of the chair.
  • FIG. 1 shows an office chair, which is illustrated in schematic view, having a backrest unit formed from a backrest support and a height-adjustable backrest;
  • FIG. 2 shows the backrest unit illustrated in a view according to the arrow direction X sketched in FIG. 1 , with the backrest support and the backrest;
  • FIG. 3 shows the backrest unit illustrated in plan view and in section according to the line III-III sketched in FIG. 2 ;
  • FIG. 4 shows the backrest unit illustrated in section according to the line IV-IV sketched in FIG. 3 ;
  • FIG. 5 shows a section according to the line V-V in FIG. 4 with a latching unit which is arranged, for example, on the backrest support and is intended for adjusting the height of the backrest.
  • FIG. 1 shows a chair which is illustrated in a schematic view, in particular an office chair 10 which can be adjusted in respect of height and inclination in a manner which is not illustrated.
  • the office chair 10 has a base frame 15 which is provided, for example, with a plurality of supporting arms 11 and castors 12 amounted thereon and has a central vertical pillar 14 and a gas-filled compression spring 13 arranged therein.
  • Mounted at the upper end of the tubular vertical pillar 14 is a first supporting body 20 which is operatively connected to the gas-filled compression spring 13 and designed in the form of a cantilever in the direction towards a knee side of the chair.
  • a second supporting body 19 which is arranged on the first supporting body 20 can be seen, as can a backrest unit which is arranged thereon and is denoted in its entirety by 75 .
  • the second supporting body 19 is mounted on the first supporting body by means of a rotating/sliding bearing 20 ′.
  • Two bearing brackets 16 and 17 which are arranged spaced apart from each other transverse to the seat direction, are respectively fastened in the knee-side region of the first supporting body 20 and in the backrest-side region of the second supporting body 19 .
  • the bearing brackets 16 and 17 are used for holding and fastening a seat body 18 (illustrated schematically) by means of rotating bearings 16 ′ and 17 ′ which are respectively arranged on the knee side and backrest side and by means of which a respective pivot axis is formed.
  • the seat body 18 , the first supporting body 20 , the second supporting body 19 and the backrest unit 75 which is arranged on the latter can therefore be pivoted with respect to one another, as a result of which different inclinations of the seat body 18 and the backrest unit 75 can be achieved.
  • the backrest unit 75 which is illustrated schematically in FIG. 1 , comprises a backrest support 30 which is arranged and fastened on the second supporting body 19 , and a backrest 25 which is arranged on the backrest support.
  • the backrest 25 can be adjusted in height, for example starting from a first basic position illustrated in FIG. 1 , stepwise in latched steps relative to the seat body 16 in the arrow direction H and can be returned back into the basic position rectilinearly in one step over the entire adjusting distance in accordance with the arrow direction H′.
  • FIG. 2 shows the backrest unit in a view according to the arrow direction X sketched in FIG. 1 .
  • This illustration shows the backrest support 30 which is arranged on the second supporting body 19 and is arranged with an upper subsection in a recess 24 of approximately pocket-shaped design in the backrest 25 .
  • the backrest 25 is in engagement with the latching unit 35 , which is arranged in the backrest support 30 and in the backrest 25 and is illustrated schematically in FIGS. 1 and 2 , in such a manner that raising of the backrest 25 causes the latching unit to be adjusted stepwise relative to the seat body 18 in the arrow direction H and to be returned from an upper end position into a lower one in the arrow direction H′.
  • FIG. 3 an exemplary embodiment of the backrest unit 75 is Illustrated in section and in plan view according to the line III-III sketched in FIG. 2 .
  • the backrest support 30 a subsection of the backrest 25 , a plate-shaped supporting part 50 which is designed as a retaining element and is connected to the backrest 25 , and a guide-path element 35 ′ arranged on the supporting part 50 and forming part of the latching unit 35 can be seen here.
  • the backrest unit 75 together with the individual elements 25 , 30 , 35 and 50 , is explained in greater detail below.
  • the backrest 25 comprises a back wall 23 and an end wall 22 spaced apart therefrom.
  • the end wall 22 is divided into two subsections 22 ′ and 22 ′′ so as to form the pocket-shape recess 24 .
  • the sub sections 22 ′ and 22 ′′ are connected to the back wall 23 in the region of the recess 24 by means of walls 21 and 21 ′ which are integrally formed on them.
  • the recess 24 which is arranged on the end side 22 of the back rest 25 is open downwards towards the seat surface 18 and is used to hold the supporting part 50 and the backrest support 30 which is partially arranged therein.
  • the backrest support 30 which his illustrated in FIG. 3 and is of approximately U-shaped design in profile cross section has an end wall 31 and limbs 26 and 26 ′ arranged laterally thereon.
  • the supporting part 50 which is illustrated in profile cross section in FIG. 3 and is arranged in the recess 24 of the backrest 25 comprises a plate 51 which is provided on one side with a plurality of ribs 52 which are spaced apart from one another and are connected to the backrest 25 . Integrally formed on the two opposite ends of the plate 51 are respective webs 53 and 53 ′ which are or L-shaped or backwards L-shaped design in profile cross section and respectively engage in one of the two grooves 27 , 27 ′.
  • a groove 55 or a web 32 of the backrest support 30 is provided on the plate 51 of the supporting part 50 , between two webs 54 and 54 ′ on the side which faces the inner side of the end wall 31 .
  • the webs 53 , 53 ′, 32 guide the backrest 25 longitudinally in the grooves 27 , 27 ′ D 55 in its adjustment direction.
  • the guide-path element 35 ′ is integrally formed approximately in the centre of the supporting part and on its side facing the backrest support 30 .
  • a lever arm 45 which has a spindle body 45 at one end and a latching pin 47 at the other end, is arranged on the backrest support 30 opposite the guide-path element 35 ′ as latching element.
  • the lever arm 45 is mounted in the backrest support 30 in a manner such that it can pivot freely by the spindle body 46 around its (imaginary axe) Axis Y (see also FIG. 4 ).
  • the lever arm is operatively connected to the guide-path element by means of the latching pin 46 which engages in the guide-path element 35 ′ ( FIGS. 3, 4 ).
  • the backrest unit 75 is illustrated in section according to the line IV-IV sketched in the region of the recess 24 in FIG. 3 .
  • the pivoting lever 45 which is mounted with the spindle body 46 on the backrest support 30 and engages in a groove-shape guide path 40 by means of the latching pin 47 can also be seen here.
  • FIG. 5 shows in more detail the guide-path element 35 ′ which is illustrated in sectional view according to the incepting line V-V in FIG. 4 and, in the exemplary embodiment which is illustrated, is arranged on the wall 51 of the supporting part 50 .
  • FIG. 5 furthermore shows the pivoting lever 45 which is mounted on the spindle body 46 together with the latching pin 47 which is arranged on the said lever and is positioned in a latching stop 44 . 2 of the guide path 40 .
  • FIG. 5 furthermore schematically illustrates, by means of the arrows 1 and 2 and the “dash-dotted” lines which are not numbered, the sequence or movement of the latching pin 47 caused by adjusting the height of the backrest 25 .
  • the guide-path element 35 ′ is bounded laterally by the first webs 33 and 33 ′ ( FIG. 3 ) and at the upper and lower end by second webs 34 and 34 ′ ( FIG. 4 ). Furthermore, the guide-path element 35 ′ is provided with the self-contained, groove-shaped guide path 40 .
  • the guide path 40 has a latching section 41 ′ and a return section 41 ′′ which are connected to each other at their upper and lower ends by means of likewise groove-shaped deflecting paths 42 and 48 to form a self-contained path. Except for the return section 42 , a width of the guide path 40 is only slightly larger than the diameter of the latching pin.
  • the pivotable lever arm 45 of the latching element is substantially shorter than the longitudinal extent of the return section ( 41 ′′).
  • the latching section 41 ′ and the return section 41 ′′ are arranged spaced apart from each other and functionally separated from each other by means of an intermediate piece 36 which is orientated parallel to the longitudinal extent of the two sections 41 ′ and 41 ′′.
  • the latching section 41 ′ of the groove-shaped guide path 40 is provided, on the side which faces the web 33 ′, with a plurality of latching stops 44 , 44 . 1 - 44 . 5 which are arranged spaced apart from one another and are connected to one another by a plurality of groove-shaped curved paths having a double curve.
  • the latching section 41 ′ comprises the latching stops which are arranged one behind another the longitudinal course of the latching section and are denoted by 44 ; 44 . 1 ; 44 . 2 ; 44 . 3 ; 44 . 4 and 44 . 5 , and also the curved path which connect the said latching stops to one another and are denoted by 43 ; 43 . 1 ; 43 . 2 ; 43 . 3 and 43 . 4 .
  • Each curved path 43 , 43 . 1 - 43 . 5 has a projection 39 , 39 . 1 - 39 . 4 which is formed on he web 33 ′ and in incliner in the adjustment direction.
  • the latching pin executes with respect to the guide-path element 35 ′ a curved relative movement which is orientated in the clockwise direction in the guide-path 40 .
  • Each segment, corresponding to one latching step, of the latching section 41 ′ has a deflecting toe 38 ; 38 . 1 ; 38 . 2 ; 38 . 3 and 38 .
  • each deflecting toe is integrally formed on the intermediate piece 36 .
  • the contour of the deflecting toes 38 ; 38 . 1 ; 38 . 2 ; 38 . 3 and 38 . 4 in each case ends an anticlockwise, second, curved relative movement of the latching pin 47 with respect to the guide-path element 35 ′.
  • An end piece of each deflecting toe is inclined in the manner of a ramp towards the adjustment direction H.
  • the lever 45 therefore pivots in two opposite directions during a latching step.
  • the latching pin 47 is first of all situated on one side of the line 60 along which the pivoting axis Y moves during an adjustment movement of the backrest 25 .
  • a projection 39 , 39 . 1 - 39 . 4 of a segment of the latching section 41 ′ causes the latching pin 47 then to pivot by means of a pivoting movement around the axis Y onto the other side of the line 60 .
  • the approximately S-shaped profile of each segment subsequently leads to an opposite pivoting movement of the latching pin 47 back to the original side of the line 60 .
  • the latching pin strikes against the deflecting toe 38 , 38 .
  • the deflecting-toe contour which rises in a ramped-like manner counter to the adjustment direction, causes the adjustment movement in the adjustment direction of the backrest to stop.
  • the Latching pin can be transferred, by continuing its pivoting movement, into the next latching 44 . 1 - 44 . 5 .
  • the backrest has taken up a further intermediate position in which it has been adjusted upwards by one latching step.
  • the latching pin is fixed in the latching stop 44 , 44 . 1 - 44 . 5
  • the backrest remains on the latching pin 47 because of its own weight.
  • FIG. 5 shows this by way of example for the latching stop 44 . 2 which defines an intermediate position between a lower latching position (predetermined by the latching stop 44 ) and an upper latching position (predetermined by the latching stop 44 . 5 ) of the backrest.
  • the latching pin can be transferred via the deflecting section 48 , the return section 41 ′′ and the further deflecting section 42 back to the beginning of the latching section 41 ′, namely the latching stop 4 A (arrow 2 ).
  • the backrest is displaced from its upper latching position to its lower latching position.
  • the guide-path element 35 ′ which is described above in conjunction with the individual figures and the arrangement thereof on a backrest or on a backrest support is not restricted to the exemplary embodiments which have been illustrated and described. Further expedient embodiments and arrangements are also possible without departing from the basic concept of the invention.

Landscapes

  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)
US10/240,160 2000-03-29 2001-03-19 Device for adjusting the components of a chair Abandoned US20050017560A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH00602/00A CH696482A5 (de) 2000-03-29 2000-03-29 Vorrichtung für eine Verstellung von einer ersten Komponente eines Stuhls gegenüber einer zweiten Komponente eines Stuhls.
CH602/00 2000-03-29
PCT/CH2001/000169 WO2001072178A1 (fr) 2000-03-29 2001-03-19 Dispositif permettant de regler les composants d'une chaise

Publications (1)

Publication Number Publication Date
US20050017560A1 true US20050017560A1 (en) 2005-01-27

Family

ID=4522816

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/240,160 Abandoned US20050017560A1 (en) 2000-03-29 2001-03-19 Device for adjusting the components of a chair

Country Status (12)

Country Link
US (1) US20050017560A1 (fr)
EP (1) EP1267669B1 (fr)
JP (1) JP2003527911A (fr)
AT (1) ATE282347T1 (fr)
AU (1) AU2001240400A1 (fr)
BR (1) BR0109634B1 (fr)
CH (1) CH696482A5 (fr)
DE (1) DE50104544D1 (fr)
ES (1) ES2233609T3 (fr)
PT (1) PT1267669E (fr)
TW (1) TW557736U (fr)
WO (1) WO2001072178A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090267315A1 (en) * 2008-04-28 2009-10-29 Specmat Limited Seat
US20100323861A1 (en) * 2009-06-19 2010-12-23 Sihar Ahmad Karwan Total abs office chair
US20120193962A1 (en) * 2011-02-01 2012-08-02 Ching-Ming Chen Device for adjusting the height of the backrest of an office chair
US20140265504A1 (en) * 2011-10-05 2014-09-18 Nhk Spring Co., Ltd. Vehicle seat
US20150015042A1 (en) * 2009-01-23 2015-01-15 Backjoy Orthotics, Llc Apparatus and system for dynamically correcting posture
US20150366354A1 (en) * 2013-01-23 2015-12-24 L&P Property Management Company Chair back height adjustment mechanism and chair
GB2529661A (en) * 2014-08-28 2016-03-02 Yao-Chuan Wu Modified back rack
US10076191B2 (en) * 2017-02-22 2018-09-18 Hsin-Hua Chen Chair back structure
US20200069064A1 (en) * 2018-08-31 2020-03-05 Dawon Chairs Co., Ltd Chair having flection adjustment module for lumbar support part

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602007014027D1 (de) * 2007-06-20 2011-06-01 Steelcase Sa System zur Höhenverstellung der Rückenlehne eines Stuhls
TWI609654B (zh) * 2013-05-28 2018-01-01 限制裝置
KR102366832B1 (ko) * 2021-08-23 2022-02-24 주식회사 다원체어스 의자의 등판 높이 조절기구

Citations (10)

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Publication number Priority date Publication date Assignee Title
US979149A (en) * 1906-04-05 1910-12-20 Edgar A Gay Furniture attachment.
US5286088A (en) * 1990-06-12 1994-02-15 Unit Press Limited Underseat mechanism for a chair
US5597204A (en) * 1995-08-04 1997-01-28 Herman Miller, Inc. Height adjustment device
US5695249A (en) * 1996-06-24 1997-12-09 Lotfi; Mehdian Height adjustment mechanism for chair components
US6155643A (en) * 1996-09-06 2000-12-05 Imarc S.P.A. Device for adjusting the height of the back-rest of a seat back portion, in particular in office chairs
US6209961B1 (en) * 2000-04-04 2001-04-03 Su-Jan Chen Level-adjustable and swivelable armrest assembly
US6299253B1 (en) * 1999-08-19 2001-10-09 Chao Ken Chen Telescopic positioning mechanism for chair backrest
US6343840B1 (en) * 2001-05-18 2002-02-05 Yi Chun Enterprise Ltd. Height adjustment mechanism for chair backrest or arm
US6439664B1 (en) * 1999-03-09 2002-08-27 Imarc S.P. A. Height adjustment device, particularly for the seat back portion and arm-rests in office chairs
US6709059B1 (en) * 2000-07-27 2004-03-23 Sava Cvek Adjustable non-biased positioning mechanism

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Publication number Priority date Publication date Assignee Title
GB191220533A (en) * 1912-09-09 1913-09-09 William Ernest King An Improved Adjustable Movement for Raising or Lowering Heads and Backs of Couches, Settees and Easy Chairs.
DE352463C (de) * 1919-11-12 1922-04-27 Hans Ponndorf Vorrichtung zum Feststellen anhebbarer Kopf- oder Rueckenstuetzen an Liegestuehlen und aehnlichen Moebeln
JP3921257B2 (ja) * 1996-05-28 2007-05-30 タカノ株式会社 椅子の背もたれ高さ調節装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US979149A (en) * 1906-04-05 1910-12-20 Edgar A Gay Furniture attachment.
US5286088A (en) * 1990-06-12 1994-02-15 Unit Press Limited Underseat mechanism for a chair
US5597204A (en) * 1995-08-04 1997-01-28 Herman Miller, Inc. Height adjustment device
US5695249A (en) * 1996-06-24 1997-12-09 Lotfi; Mehdian Height adjustment mechanism for chair components
US6155643A (en) * 1996-09-06 2000-12-05 Imarc S.P.A. Device for adjusting the height of the back-rest of a seat back portion, in particular in office chairs
US6439664B1 (en) * 1999-03-09 2002-08-27 Imarc S.P. A. Height adjustment device, particularly for the seat back portion and arm-rests in office chairs
US6299253B1 (en) * 1999-08-19 2001-10-09 Chao Ken Chen Telescopic positioning mechanism for chair backrest
US6209961B1 (en) * 2000-04-04 2001-04-03 Su-Jan Chen Level-adjustable and swivelable armrest assembly
US6709059B1 (en) * 2000-07-27 2004-03-23 Sava Cvek Adjustable non-biased positioning mechanism
US6343840B1 (en) * 2001-05-18 2002-02-05 Yi Chun Enterprise Ltd. Height adjustment mechanism for chair backrest or arm

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7905504B2 (en) * 2008-04-28 2011-03-15 Specmat Limited Seat
US20090267315A1 (en) * 2008-04-28 2009-10-29 Specmat Limited Seat
US10034548B2 (en) * 2009-01-23 2018-07-31 Backjoy Orthotics, Llc Apparatus and system for dynamically correcting posture
US20150015042A1 (en) * 2009-01-23 2015-01-15 Backjoy Orthotics, Llc Apparatus and system for dynamically correcting posture
US10849428B2 (en) 2009-01-23 2020-12-01 Backjoy Orthotics, Llc Apparatus and system for dynamically correcting posture
US20100323861A1 (en) * 2009-06-19 2010-12-23 Sihar Ahmad Karwan Total abs office chair
US8696534B2 (en) * 2009-06-19 2014-04-15 Sihar Ahmad Karwan Total abs office chair
US20120193962A1 (en) * 2011-02-01 2012-08-02 Ching-Ming Chen Device for adjusting the height of the backrest of an office chair
US8579376B2 (en) * 2011-02-01 2013-11-12 Ching-Ming Chen Device for adjusting the height of the backrest of an office chair
US20140265504A1 (en) * 2011-10-05 2014-09-18 Nhk Spring Co., Ltd. Vehicle seat
US9555724B2 (en) * 2011-10-05 2017-01-31 Nhk Spring Co., Ltd. Vehicle seat
US20150366354A1 (en) * 2013-01-23 2015-12-24 L&P Property Management Company Chair back height adjustment mechanism and chair
US9782008B2 (en) * 2013-01-23 2017-10-10 L&P Property Management Company Chair back height adjustment mechanism and chair
GB2529661B (en) * 2014-08-28 2017-11-15 Wu Yao-Chuan Modified back rack
GB2529661A (en) * 2014-08-28 2016-03-02 Yao-Chuan Wu Modified back rack
US10076191B2 (en) * 2017-02-22 2018-09-18 Hsin-Hua Chen Chair back structure
US20200069064A1 (en) * 2018-08-31 2020-03-05 Dawon Chairs Co., Ltd Chair having flection adjustment module for lumbar support part

Also Published As

Publication number Publication date
BR0109634A (pt) 2003-04-22
WO2001072178A1 (fr) 2001-10-04
CH696482A5 (de) 2007-07-13
JP2003527911A (ja) 2003-09-24
EP1267669A1 (fr) 2003-01-02
PT1267669E (pt) 2005-04-29
EP1267669B1 (fr) 2004-11-17
TW557736U (en) 2003-10-11
ES2233609T3 (es) 2005-06-16
ATE282347T1 (de) 2004-12-15
BR0109634B1 (pt) 2010-08-24
AU2001240400A1 (en) 2001-10-08
DE50104544D1 (de) 2004-12-23

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AS Assignment

Owner name: GIROFLEX-ENTWICKLUNGS-AG, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BASTAS, UGAR;REEL/FRAME:015038/0631

Effective date: 20021218

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION