CA2643964A1 - Ergonomic side chair - Google Patents

Ergonomic side chair Download PDF

Info

Publication number
CA2643964A1
CA2643964A1 CA002643964A CA2643964A CA2643964A1 CA 2643964 A1 CA2643964 A1 CA 2643964A1 CA 002643964 A CA002643964 A CA 002643964A CA 2643964 A CA2643964 A CA 2643964A CA 2643964 A1 CA2643964 A1 CA 2643964A1
Authority
CA
Canada
Prior art keywords
chair
seat
attached
backrest
lumbar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002643964A
Other languages
French (fr)
Other versions
CA2643964C (en
Inventor
Manuel Saez
Lachezar Tsvetanov
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.)
Humanscale Corp
Original Assignee
Humanscale Corporation
Manuel Saez
Lachezar Tsvetanov
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 Humanscale Corporation, Manuel Saez, Lachezar Tsvetanov filed Critical Humanscale Corporation
Publication of CA2643964A1 publication Critical patent/CA2643964A1/en
Application granted granted Critical
Publication of CA2643964C publication Critical patent/CA2643964C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • A47C5/00—Chairs of special materials
    • A47C5/04—Metal chairs, e.g. tubular
    • 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
    • A47C7/02—Seat parts
    • A47C7/029—Seat parts of non-adjustable shape adapted to a user contour or ergonomic seating positions
    • 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
    • A47C7/405—Support for the head or the back for the back with double backrests
    • 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
    • A47C7/448—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with resilient blocks
    • 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
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs

Abstract

An ergonomic chair having a seat with selectively located slot patterns or spring mechanisms to reduce pressure on the occupant of the seat and a flexible back that allows the occupant to recline while at the same time providing lumbar support. An embodiment of the chair may be telescopically stacked in a space-saving configuration of a plurality of identical chairs.

Claims (78)

1. A chair comprising:
a. a support means; and b. a seat attached to the support means, the seat having tab-forming slots in a pressure-reducing pattern at predetermined pressure point locations, the seat having a front and a rear.
2. The chair of claim 1 wherein the predetermined pressure point locations are in the zones of the user's ischial protuberosities when the user is properly seated.
3. The chair of claim 1 wherein the pressure-reducing pattern is an H-pattern.
4. The chair of claim 1 wherein the pressure-reducing pattern is an elongated H-pattern.
5. The chair of claim 4 wherein the support means comprises:
a. a left side front leg having a top and a bottom;
b. a right side front leg having a top and a bottom;
c. a left side rear leg having a top and a bottom, the top being attached to the seat;
d. a right side rear leg having a top and a bottom, the top being attached to the seat; and e. a front crossbar attached at a proximal end to the top of the left side front leg and at a distal end to the top of the right side front leg, the front crossbar being attached to the seat.
6. The chair of claim 5 wherein the seat is attached to a mesial point of the front crossbar, the seat having at least one slot in the front of the seat for defining two flexing seat extensions, the two flexing seat extensions being able to move in relation to one another.
7. The chair of claim 6 wherein the slot in the front of the seat for defining two flexing seat extensions is "V" shaped.
8. The chair of claim 6 further comprising:
a. a left side lumbar mount attached to the left rear leg, the left side lumbar mount extending above the seat;
b. a right side lumbar mount attached to the right rear leg, the right side lumbar mount extending above the seat;

c. a lumbar support means attached to the left side lumbar mount and the right side lumbar mount; and d. a backrest attached to the lumbar support means, the backrest in substantially perpendicular relation to the seat, the backrest having a top, a bottom, a left side, and a right side, the backrest being more flexible than the lumbar support means.
9. The chair of claim 8 wherein the lumbar support means comprises a band of elastic material.
10. The chair of claim 9 wherein the elastic material is rubber.
11. The chair of claim 9 wherein the elastic material is leather.
12. The chair of claim 9 wherein the elastic material is an elastomer.
13. The chair of claim 8 wherein the lumbar support means is attached to the backrest at one attachment point in the center of the backrest.
14. The chair of claim 8 wherein the lumbar support means comprises:
a. a left side connector attached between the left side lumbar mount and the left side of the backrest; and b. a right side connector attached between the right side lumbar mount and the right side of the backrest.
15. The chair of claim 14 wherein the connectors comprise:
a. a first ball joint mount attached to the left side lumbar mount;
b. a second ball joint mount attached to the right side lumbar mount;
c. a first ball bearing rotatably attached to the first ball joint mount;
d. a second ball bearing rotatably attached to the second ball joint mount;
e. a first ball joint member rotatably attached to the first ball bearing and fixedly attached to the left side of the backrest; and f. a second ball joint member rotatably attached to the second ball bearing and fixedly attached to the right side of backrest.
16. The chair of claim 14 wherein the connectors comprise a piece of elastic material.
17. The chair of claim 8 further comprising one or more vertical slots in the backrest, the one or more vertical slots extending down from the top of the backrest, the one or more vertical slots defining two or more flexing backrest extensions, the two or more flexing backrest extensions being able to move in relation to one another.
18. The chair of claim 8 further comprising a vertical slot in the backrest, the vertical slot extending down from the top of the backrest, the vertical slot defining two flexing backrest extensions, the two flexing backrest extensions being able to move in relation to one another.
19. The chair of claim 18 wherein the vertical slot is interrupted with an expanded vertical slot grip, the expanded vertical slot grip defining a shape adapted to accommodate a user's hand.
20. The chair of claim 18 wherein the support means is adapted to be telescopically received on additional identical chairs to form a space-saving stack of chairs.
21. The chair of claim 18 wherein the seat is a one-piece shell.
22. The chair of claim 8 wherein one or more of the legs comprise a spring which compresses longitudinally within the leg when a weight is placed on the seat.
23. A chair comprising:
a. a support means;
b. a seat attached to the support means, the seat having a front and a rear;
c. a left side lumbar mount attached to the support means, the left side lumbar mount extending above the seat;
d. a right side lumbar mount attached to the support means, the right side lumbar mount extending above the seat;
e. a lumbar support means attached to the left side lumbar mount and the right side lumbar mount; and f. a backrest attached to the lumbar support means, the backrest in substantially perpendicular relation to the seat, the backrest having a top, a bottom, a left side, and a right side, the backrest being more flexible than the lumbar support means.
24. The chair of claim 23 wherein the lumbar support means comprises a band of elastic material.
25. The chair of claim 24 wherein the elastic material is rubber.
26. The chair of claim 24 wherein the elastic material is leather.
27. The chair of claim 24 wherein the elastic material is an elastomer.
28. The chair of claim 23 wherein the lumbar support means is attached to the backrest at one attachment point in the center of the backrest.
29. The chair of claim 23 wherein the lumbar support means comprises:

a. a left side connector attached between the left side lumbar mount and the left side of the backrest; and b. a right side connector attached between the right side lumbar mount and the right side of the backrest.
30. The chair of claim 29 wherein the connectors comprise:
a. a first ball joint mount attached to the left side lumbar mount;
b. a second ball joint mount attached to the right side lumbar mount;
c. a first ball bearing rotatably attached to the first ball joint mount;
d. a second ball bearing rotatably attached to the second ball joint mount;
e. a first ball joint member rotatably attached to the first ball bearing and fixedly attached to the left side of the backrest; and f. a second ball joint member rotatably attached to the second ball bearing and fixedly attached to the right side of backrest.
31. The chair of claim 29 wherein the connectors comprise a piece of elastic material.
32. The chair of claim 23 further comprising one or more vertical slots in the backrest, the one or more vertical slots extending down from the top of the backrest, the one or more vertical slots defining two or more flexing backrest extensions, the two or more flexing backrest extensions being able to move in relation to one another.
33. The chair of claim 23 further comprising a vertical slot in the backrest, the vertical slot extending down from the top of the backrest, the vertical slot defining two flexing backrest extensions, the two flexing backrest extensions being able to move in relation to one another.
34. The chair of claim 33 wherein the vertical slot is interrupted with an expanded vertical slot grip, the expanded vertical slot grip defining a shape adapted to accommodate a user's hand
35. The chair of claim 33 wherein the support means comprises:
a. a left side front leg having a top and a bottom;
b. a right side front leg having a top and a bottom;
c. a left side rear leg having a top and a bottom, the top being attached to the seat;
d. a right side rear leg having a top and a bottom, the top being attached to the seat; and e. a front crossbar attached at a proximal end to the top of one front leg and at a distal end to the top of the other front leg, the front crossbar being attached to the seat.
36. The chair of claim 35 wherein the seat is attached to a mesial point of the front crossbar, the seat having at least one slot in the front of the seat for defining two flexing seat extensions, the two flexing seat extensions being able to move in relation to one another.
37. The chair of claim 36 wherein the slot in the front of the seat for defining two flexing seat extensions is "V" shaped.
38. The chair of claim 36 wherein one or more of the legs comprise a spring which compresses longitudinally within the leg when a weight is placed on the seat.
39. The chair of claim 36 wherein the support means is adapted to be telescopically received on additional identical chairs to form a space-saving stack of chairs.
40. The chair of claim 36 wherein the seat is a one-piece shell.
41. The chair of claim 36 wherein the seat further comprises tab-forming slots in a pressure-reducing pattern at predetermined pressure point locations.
42. The chair of claim 41 wherein the predetermined pressure point locations are in the zones of the user's ischial protuberosities when the user is properly seated.
43. The chair of claim 42 wherein the pressure-reducing pattern is an H-pattern.
44. The chair of claim 42 wherein the pressure-reducing pattern is an elongated H-pattern.
45. (cancelled)
46. (cancelled)
47. A chair comprising a seat and a support means:
a. the support means adapted to be telescopically received on additional identical chairs to form a space-saving stack of chairs, the support means comprising:
i. a left side front leg having a top and a bottom;
ii. a right side front leg having a top and a bottom;
iii. a left side rear leg having a top and a bottom, the top being attached to the seat;

iv. a right side rear leg having a top and a bottom, the top being attached to the seat;
v. a front crossbar attached at a proximal end to the top of one front leg and at a distal end to the top of the other front leg; and b. a seat attached to the support means, the seat having a front and a rear, wherein the seat is attached to a mesial point of the front crossbar, the seat having at least one slot in the front of the seat for defining two flexing seat extensions, the two flexing seat extensions being able to move in relation to one another.
48. (cancelled)
49. The chair of claim 47 further comprising:
a. a left side lumbar mount attached to the support means, the left side lumbar mount extending above the seat;
b. a right side lumbar mount attached to the support means, the right side lumbar mount extending above the seat;
c. a lumbar support means attached to the left side lumbar mount and the right side lumbar mount; and d. a backrest attached to the lumbar support means, the backrest in substantially perpendicular relation to the seat, the backrest having a top, a bottom, a left side, and a right side, the backrest being more flexible than the lumbar support means.
50. The chair of claim 49 wherein the lumbar support means comprises:
a. a left side connector attached between the left side lumbar mount and the left side of the backrest; and b. a right side connector attached between the right side lumbar mount and the right side of the backrest.
51. The chair of claim 50 wherein the connectors comprise:
a. a first ball joint member attached to the lumbar mount;
b. a ball bearing rotatably attached to the first ball joint member; and c. a second ball joint member rotatably attached to the ball bearing and fixedly attached to the backrest.
52. The chair of claim 50 wherein the connectors comprise a piece of elastic material.
53. The chair of claim 49 wherein the lumbar support means comprises a band of elastic material.
54. The chair of claim 53 wherein the elastic material is rubber.
55. The chair of claim 53 wherein the elastic material is leather.
56. The chair of claim 53 wherein the elastic material is elastomeric.
57. The chair of claim 53 wherein the lumbar support means is attached to the backrest at one attachment point in the center of the backrest.
58. The chair of claim 50 further comprising one or more vertical slots in the backrest, the one or more vertical slots extending down from the top of the backrest, the one or more vertical slots defining two or more flexing backrest extensions, the two or more flexing backrest extensions being able to move in relation to one another.
59. The chair of claim 50 further comprising a vertical slot in the backrest, the vertical slot extending down from the top of the backrest, the vertical slot defining two flexing backrest extensions, the two flexing backrest extensions being able to move in relation to one another.
60. The chair of claim 59 wherein the vertical slot is interrupted with an expanded vertical slot grip, the expanded vertical slot grip defining a shape adapted to accommodate a user's hand.
61. The chair of claim 50 wherein one or more of the legs comprise a spring which compresses longitudinally within the leg when a weight is placed on the seat.
62. The chair of claim 50 wherein the seat is a one-piece shell.
63. The chair of claim 50 wherein the seat further comprises tab-forming slots in a pressure-reducing pattern at predetermined pressure point locations.
64. The chair of claim 63 wherein the pressure-reducing pattern is an H-pattern.
65. The chair of claim 63 wherein the pressure-reducing pattern is an elongated H-pattern.
66. The chair of claim 65 wherein the predetermined pressure point locations are in the zones of the user's ischial protuberosities when the user is properly seated.
67. A chair comprising:
a. a support means;
b. a seat attached to the support means;

c. a backrest having a lumbar region and a flex region, the lumbar region attached to the support means, the lumbar region being adapted to be flexible, the flex region being adapted to be more flexible than the lumbar region, and the lumbar region being in closer proximity to the seat than the flex region.
68. The chair of claim 67 wherein the lumbar region and flex region are constructed of the same material and the lumbar region has a thicker layer of material than the flex region.
69. The chair of claim 67 wherein the lumbar region and flex region are constructed of the same material and the lumbar region is reinforced to make it less flexible than the flex region.
70. The chair of claim 67 wherein the lumbar region and flex region are constructed of substantially different material and the lumbar region is a less flexible material than the flex region material.
71. (cancelled)
72. (cancelled)
73. The chair of claim 22 wherein the spring comprises:
a. a foot;
b. a spring, the spring having a proximal end and a distal end, the proximal end being adjacent to the foot;
c. a cap having a central hole, the cap being adjacent to the distal end of the spring, the cap being adapted to fit over the chair leg;
d. a rod extending from the foot through the spring and cap and extending up into a cavity of the chair leg; the rod being removably attached to the chair leg.
74. A stackable ergonomic chair comprising:
a. three or more legs having a top and a bottom, the legs shaped to allow stacking of a plurality of chairs;
b. a seat having a front and a rear; the seat being attached to the top of the legs at two points on either side of the rear of the seat and at the approximate center point of the front of the seat, the seat having at least two tab forming slot patterns in an elongated H-pattern at predetermined pressure point locations and at least one slot in the front of the seat to allow flexing of the seat;

c. two lumbar mounts attached to one or more of the legs and extending above the seat;
d. a lumbar support attached between the two lumbar mounts;
e. one or more of the legs comprising a spring which compresses longitudinally within the leg when a weight is placed on the seat; and f. a backrest attached to the lumbar support.
75. A stackable ergonomic chair comprising:
a. a left side front leg having a top and a bottom;
b. a right side front leg having a top and a bottom;
c. a left side rear leg having a top and a bottom;
d. a right side rear leg having a top and a bottom;
e. a front crossbar attached at a proximal end to the top of the left side front leg and at a distal end to the top of the right side front leg;
f. a seat having tab forming slots in an elongated H-pattern in the zones of the user's ischial protuberosities when the user is properly seated, the seat having a front and a rear, the seat being a one-piece shell, the front of the seat being attached to a mesial point of the front crossbar and the rear of the seat being attached to the top of the left side rear leg and the top of the right side rear leg, the seat having at least one slot in the front of the seat, the front of the seat having a slot extending from the front towards the rear defining two flexing seat extensions, the two flexing seat extensions being able to move in relation to one another.
g. a left side lumbar mount attached to the left rear leg, the left side lumbar mount extending above the seat;
h. a right side lumbar mount attached to the right rear leg, the right side lumbar mount extending above the seat;
i. a lumbar support means attached to the left side lumbar mount and the right side lumbar mount;
j. a backrest attached to the lumbar support means, the backrest in substantially perpendicular relation to the seat, the backrest having a top, a bottom, a left side, and a right side, the backrest being more flexible than the lumbar support means; and k. a vertical slot in the backrest, the vertical slot extending down from the top of the backrest, the vertical slot defining two flexing backrest extensions, the two flexing backrest extensions being able to move in relation to one another.
76. The chair of claim 38 wherein the spring comprises:
a. a foot;
b. a spring, the spring having a proximal end and a distal end, the proximal end being adjacent to the foot;
c. a cap having a central hole, the cap being adjacent to the distal end of the spring, the cap being adapted to fit over the chair leg;
d. a rod extending from the foot through the spring and cap and extending up into a cavity of the chair leg; the rod being removably attached to the chair leg.
77. The chair of claim 61 wherein the spring comprises:
a. a foot;
b. a spring, the spring having a proximal end and a distal end, the proximal end being adjacent to the foot;
c. a cap having a central hole, the cap being adjacent to the distal end of the spring, the cap being adapted to fit over the chair leg;
d. a rod extending from the foot through the spring and cap and extending up into a cavity of the chair leg; the rod being removably attached to the chair leg.
78. The chair of claim 74 wherein the spring comprises:
a. a foot;
b. a spring, the spring having a proximal end and a distal end, the proximal end being adjacent to the foot;
c. a cap having a central hole, the cap being adjacent to the distal end of the spring, the cap being adapted to fit over the chair leg;
d. a rod extending from the foot through the spring and cap and extending up into a cavity of the chair leg; the rod being removably attached to the chair leg.
CA2643964A 2006-03-24 2007-03-21 Ergonomic side chair Expired - Fee Related CA2643964C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/277,450 US7971935B2 (en) 2006-03-24 2006-03-24 Ergonomic side chair
US11/277,450 2006-03-24
PCT/US2007/064517 WO2007112243A2 (en) 2006-03-24 2007-03-21 Ergonomic side chair

Publications (2)

Publication Number Publication Date
CA2643964A1 true CA2643964A1 (en) 2007-10-04
CA2643964C CA2643964C (en) 2012-05-29

Family

ID=38532603

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2643964A Expired - Fee Related CA2643964C (en) 2006-03-24 2007-03-21 Ergonomic side chair

Country Status (9)

Country Link
US (2) US7971935B2 (en)
EP (2) EP2039268A1 (en)
JP (1) JP2009531082A (en)
CN (1) CN101410037B (en)
AU (1) AU2007230781B2 (en)
BR (1) BRPI0709135A2 (en)
CA (1) CA2643964C (en)
MX (1) MX2008012204A (en)
WO (1) WO2007112243A2 (en)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8112868B2 (en) * 2007-06-08 2012-02-14 Grand Rapids Chair Company Method for manufacturing custom chairs
US20090096266A1 (en) * 2007-10-11 2009-04-16 Chun-Chang Tai Seat frame assembly
US8991932B2 (en) * 2009-11-12 2015-03-31 Okamura Corporation Backrest mechanism for chair
CN103124507B (en) * 2010-09-27 2015-11-25 宫本诚三 The chair sheet material that chair with backrest and this chair with backrest adopt
AU2010246557B2 (en) * 2010-12-01 2014-07-03 Resero IP Limited One Piece Plastic Chair
US8678505B2 (en) * 2010-12-21 2014-03-25 Tachi-S Co., Ltd. Seat cushion of vehicle seat
EP2739183B1 (en) 2011-08-04 2017-10-04 Cramer LLC Ergonomic seating assemblies and methods
KR101155211B1 (en) * 2011-08-16 2012-06-13 윤욱 a sitting mat for supporting vertebrae lumbales
CN102512010A (en) * 2011-12-15 2012-06-27 尹旭 Cushion for supporting lumbar vertebra
US20130187422A1 (en) * 2012-01-24 2013-07-25 Ditto Sales, Inc./Versteel Chair having flexibility between seat and back
US8919880B2 (en) 2012-03-27 2014-12-30 Haworth, Inc. Flexible seating surface
US9107504B2 (en) 2012-05-14 2015-08-18 Peter J. Haas Reclining loop frame stacking / swivel chair
AU2014201342A1 (en) * 2013-03-14 2014-10-02 Sebel Pty Ltd Injection Moulded Unupholstered Plastic Chair
USD756140S1 (en) * 2013-12-13 2016-05-17 Aichi Co., Ltd. Chair
ITTO20131015A1 (en) * 2013-12-13 2015-06-14 Pro Cord Spa CHAIR WITH OSCILLATING BACKREST
US20150335502A1 (en) 2014-04-09 2015-11-26 The Comfort Companies, Inc. Backrest
BR112017022038B1 (en) * 2015-04-13 2021-11-03 Steelcase Inc. SEAT ARRANGEMENT
US9986840B2 (en) * 2015-10-21 2018-06-05 The Comfort Companies, Inc. Adjustable chair support system
US10182953B2 (en) * 2015-10-28 2019-01-22 Sunrise Medical (Us), Llc Wheelchair backrest mounting system
USD830749S1 (en) * 2016-03-09 2018-10-16 Exemplis Llc Chair
JP6684114B2 (en) * 2016-03-10 2020-04-22 タカノ株式会社 Chair back
JP1576452S (en) * 2016-05-09 2017-05-15
USD848174S1 (en) * 2016-09-29 2019-05-14 Bruce William Prock Stack chair
US10874217B2 (en) 2017-10-18 2020-12-29 Gci Outdoor, Inc. Collapsible and portable rocking chair
US10588414B2 (en) 2018-06-08 2020-03-17 Series International, Llc Chair frame with injection molded foam padding
KR102098953B1 (en) * 2019-02-21 2020-04-09 주식회사 다원체어스 Chair with twistable backrest
CN113507865A (en) 2019-02-21 2021-10-15 斯特尔凯斯公司 Body support assembly and methods for use and assembly thereof
IT201900011166A1 (en) * 2019-07-08 2021-01-08 Pro Cord Spa FLEXIBLE BACKREST FOR A FOLDING CHAIR AND FOLDING CHAIR INCLUDING THIS BACKREST
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
CN112353114A (en) * 2020-11-10 2021-02-12 云南宝羽科技有限公司 Single aluminum alloy desk and chair
KR102497164B1 (en) * 2021-01-26 2023-02-08 주식회사 미도화학 Chair with backrest module
WO2022173799A1 (en) 2021-02-10 2022-08-18 Steelcase Inc. Body support structure
IT202100006467A1 (en) * 2021-03-18 2022-09-18 Pro Cord Spa CHAIR WITH OSCILLATING SEAT AND BACK
US20230284780A1 (en) * 2022-03-08 2023-09-14 Teng-Jen Yang One-Piece Chair Backs and Chairs Having the Same

Family Cites Families (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US169383A (en) * 1875-11-02 Improvement in ball-and-socket joints
US132762A (en) * 1872-11-05 Improvement in chairs
US1022858A (en) 1909-11-15 1912-04-09 John Markus Yieldable support for furniture.
US1490132A (en) * 1922-10-26 1924-04-15 James B Sheehy Attachment for bedsteads
US1526920A (en) * 1924-02-13 1925-02-17 Liptak Steven Resilient easy chair
US1821560A (en) * 1929-02-23 1931-09-01 Ritter Dental Mfg Company Inc Headrest
US2725096A (en) * 1953-12-09 1955-11-29 Granby Melville Deck chair canvas
US2967565A (en) 1960-01-04 1961-01-10 Knoll Associates Stacking chair
JPS4868608U (en) * 1971-12-04 1973-08-31
US3774960A (en) 1972-06-20 1973-11-27 L Blodee Stacking chair
US4047757A (en) 1976-05-03 1977-09-13 Eames Loren W Seating structures with flexible backs
US4390204A (en) 1978-01-04 1983-06-28 Gregg Fleishman Portable furniture
US4400032A (en) * 1978-04-05 1983-08-23 Depolo Harry R Eccentrically rotatable chair
DE3163545D1 (en) * 1980-01-21 1984-06-20 Bernard Curtis Watkin Chair shells
US4500137A (en) * 1982-01-21 1985-02-19 Morehouse Laurence E Physiological chair
JPS60126044U (en) * 1984-02-03 1985-08-24 団　元気 chair structure
US4660887A (en) 1985-09-11 1987-04-28 The Shaw-Walker Company Ergonomic support
US4681370A (en) * 1987-02-19 1987-07-21 Vancil David W Adjustable headrest for sunbathers
US5338094A (en) * 1988-04-25 1994-08-16 Perry Charles O Flexible reclining chair
US5154485A (en) * 1990-05-11 1992-10-13 Fleishman Gregg R Spring plate furniture
JPH0631966Y2 (en) * 1990-06-28 1994-08-24 池田物産株式会社 Seat back frame
DE9010340U1 (en) * 1990-07-09 1990-09-13 Zapf, Otto, 6240 Koenigstein, De
DE69117300T2 (en) 1990-10-23 1996-07-11 Davband Pty Ltd BACK SUPPORT FOR A CHAIR OR SEAT
US5123702A (en) 1990-10-24 1992-06-23 Shelby Williams Industries, Inc. Interaction-high density stacking chair
NO177214C (en) 1991-01-21 1995-08-09 Peter Opsvik Device of a chair comprising supporting and resilient elements which permits resilient movement of the chair relative to a support
US5332287A (en) * 1992-06-05 1994-07-26 Whitmyer Biomechanix, Inc. Articulating headrest
AU7244294A (en) * 1993-06-02 1994-12-20 Sava Cvek Articulated support chair
US5626394A (en) 1995-06-07 1997-05-06 Perry; Charles O. Tubular chair frame
US5577811A (en) 1995-06-07 1996-11-26 Hon Industries Inc. Ergonomic chair
CA2158237A1 (en) 1995-09-13 1997-03-14 Paolo Favaretto Chair with a pivoting backrest
JP3103304B2 (en) * 1995-11-06 2000-10-30 アイコ株式会社 Chair tilting method and chair with tiltable back
US5887946A (en) 1997-01-03 1999-03-30 Raftery Design, Inc. Chair with movable back support
US5967673A (en) * 1997-03-17 1999-10-19 The Torrington Company Axially oriented anti-rotation feature for lipped thrust races
US5868468A (en) 1998-04-24 1999-02-09 Wang; Chin-Chen Chair with adjustable inclination
US5997094A (en) 1998-06-05 1999-12-07 Stylex, Inc. Stackable chair with lumbar support
US6129415A (en) 1998-11-17 2000-10-10 Galloway; Robert Shock absorption system for wheelchair
US6419321B1 (en) * 1999-03-02 2002-07-16 Wonderland Nursery Goods, Co., Ltd. Adjustable head support for connection to a wheelchair
USD449938S1 (en) * 2000-05-22 2001-11-06 Herman Miller, Inc. Chair
US6409268B1 (en) 2000-06-09 2002-06-25 Stylex, Inc. Flexible chair back
AU783829B2 (en) 2000-09-28 2005-12-08 Formway Furniture Limited A reclinable chair
JP3738964B2 (en) 2000-10-31 2006-01-25 株式会社イトーキ Cover mounting structure for chairs
GB0106247D0 (en) * 2001-03-14 2001-05-02 Williams David N L Improvements relating to supports
US6722735B2 (en) 2001-04-16 2004-04-20 Ditto Sales, Inc. Chair with synchronously moving seat and seat back
WO2003063651A2 (en) 2002-01-28 2003-08-07 Walker Brock M Sacral support member for seating
US6837541B2 (en) * 2002-09-30 2005-01-04 Lear Corporation Vehicle seat having a lumbar support system
DE10247346A1 (en) 2002-10-10 2004-04-22 Dauphin Entwicklungs- U. Beteiligungs-Gmbh Stackable chair
US6974188B2 (en) * 2003-08-13 2005-12-13 Cosco Management, Inc. Chair with pivotable chair back
US7396078B2 (en) * 2004-02-05 2008-07-08 Wenger Corporation Music posture chair
WO2005117652A1 (en) 2004-05-17 2005-12-15 Radmilo Eric A self-adjusting chair back
US6957860B1 (en) 2004-06-10 2005-10-25 Hni Technologies Inc. Stackable chair with glides
NO323205B1 (en) 2005-04-08 2007-01-22 Opsvik Peter As Chair

Also Published As

Publication number Publication date
WO2007112243A8 (en) 2008-08-14
JP2009531082A (en) 2009-09-03
MX2008012204A (en) 2008-12-03
BRPI0709135A2 (en) 2011-06-28
US20110221253A1 (en) 2011-09-15
WO2007112243A2 (en) 2007-10-04
EP2039268A1 (en) 2009-03-25
US20070222268A1 (en) 2007-09-27
EP2001336A4 (en) 2009-03-25
CN101410037A (en) 2009-04-15
CN101410037B (en) 2014-10-01
WO2007112243B1 (en) 2008-01-24
AU2007230781B2 (en) 2011-05-19
EP2001336A2 (en) 2008-12-17
CA2643964C (en) 2012-05-29
US7971935B2 (en) 2011-07-05
WO2007112243A3 (en) 2007-11-29
AU2007230781A1 (en) 2007-10-04

Similar Documents

Publication Publication Date Title
CA2643964A1 (en) Ergonomic side chair
JP6936369B2 (en) Posture holder
US9480339B2 (en) Seat with pelvic support
US6811218B2 (en) Chair with conforming seat
US8602494B2 (en) Pivoting task chair
WO2018101704A2 (en) Adjustable lumbar support chair according to change of posture
US10172464B2 (en) Chair
US20070063563A1 (en) Tiltable chair accommodating male and female user seating position preferences
US6336681B1 (en) Chair and seat cushion therefor
EP1723028B1 (en) Bicycle seat
JP3895084B2 (en) Chair substrate and chair provided with the same
EP3179886B1 (en) Chair
US11071387B2 (en) Chair
WO2008054225A1 (en) Chair
JP3191773U (en) Sitting chair
CN101773446A (en) Foot massager
CA2344111A1 (en) Leg spacing apparatus for a canoe
NZ337879A (en) Chair seat comprising a forward portion of low resistance to deformation, with layers of foam of high and low resistance to resilient deformation

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20140321