CA2450026A1 - Lumbar support for a chair - Google Patents

Lumbar support for a chair Download PDF

Info

Publication number
CA2450026A1
CA2450026A1 CA002450026A CA2450026A CA2450026A1 CA 2450026 A1 CA2450026 A1 CA 2450026A1 CA 002450026 A CA002450026 A CA 002450026A CA 2450026 A CA2450026 A CA 2450026A CA 2450026 A1 CA2450026 A1 CA 2450026A1
Authority
CA
Canada
Prior art keywords
carrier
chair
frame assembly
assembly
chair frame
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
CA002450026A
Other languages
French (fr)
Other versions
CA2450026C (en
Inventor
Marcus C. Koepke
Tim Coffield
Jay R. Machael
Matthew J. Phillips
Douglas A. Schroeder
Craig H. Schultz
Erik A. Steffenson
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.)
HNI Technologies Inc
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
Publication of CA2450026A1 publication Critical patent/CA2450026A1/en
Application granted granted Critical
Publication of CA2450026C publication Critical patent/CA2450026C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • A47C7/02—Seat parts
    • A47C7/28—Seat parts with tensioned springs, e.g. of flat type
    • A47C7/282—Seat parts with tensioned springs, e.g. of flat type with mesh-like supports, e.g. elastomeric membranes
    • 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
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/02—Upholstery attaching means
    • A47C31/023—Upholstery attaching means connecting upholstery to frames, e.g. by hooks, clips, snap fasteners, clamping means or the like
    • 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
    • A47C5/06—Special adaptation of seat upholstery or fabric for attachment to tubular chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • 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

.sim. An office chair with a chair back is disclosed, the back including a mesh material connected to a two-piece carrier, the carrier being deformable and stretchable. The carrier has a bottom edge including a groove and is engageable by tabs attached to a transverse member of a chair frame assembly . The upper ends of the carrier each includes an opening for receiving a spherical end portion of the upper end of the chair frame assembly. Engageme nt of the carrier with the chair frame assembly is accomplished by stretching t he carrier and mesh between the transverse member and the spherical end portion s. The chair back includes a lumbar support which is mounted to slide along the side edges of the carrier and along vertical supports of the chair frame assembly, the lumbar support causing the back to tension forwardly. The chai r back is pivotal under the in,fluence of a chair user and is pivotally connected to the chair seat so as to cause the chair seat to also pivot in response.

Claims (30)

1. A chair back comprising:
a material for engaging a back of a chair user; and a carrier connected to said back engaging material, said carrier configured to connect to a chair frame assembly only along a lower portion of said carrier and along an upper portion of said carrier.
2. The apparatus as claimed in claim 1 wherein:
said carrier is connected to the chair frame assembly at a bottom edge of the carrier and at two upper corners of the carrier.
3. The apparatus as claimed in claim 2 wherein:
said bottom edge of said carrier includes a longitudinally extending groove adapted to engage a complementary projection of the chair frame assembly.
4. The apparatus as claimed in claim 2 wherein:
said two upper corners of said carrier are each configured with an opening adapted to receive a spherical member of said chair frame assembly.
5. The apparatus as claimed in claim 2 wherein:
said carrier is a two-piece structure; and edges of said material are restrained between the two pieces of the two-piece structure.
6. The apparatus as claimed in claim 4 wherein:
said bottom edge of said carrier includes a longitudinally extending groove adapted to engage a complementary projection of the chair frame assembly.
7. The apparatus as claimed in claim 6 wherein:
said carrier is a two-piece structure; and edges of said material are restrained between the two pieces of the two-piece structure.
8. The apparatus as claimed in claim 7 wherein:
said carrier is connected to said chair frame assembly by stretching said lower portion of said carrier over a lower portion of said chair frame assembly and by stretching said upper portion of said carrier over an upper portion of the chair frame assembly.
9. The apparatus as claimed in claim 8 wherein:
said lower portion of said chair frame assembly includes a plurality of tabs for engaging said groove of said carrier.
10. The apparatus as claimed in claim 1 wherein:
said chair frame assembly includes a vertical support member; and including a transverse member mounted to engage said vertical support member of said chair frame assembly, said transverse member having opposed end portions for slidable engagement with side edges of said carrier.
11. The apparatus as claimed in claim 10 wherein:
said transverse member is configured to force said side edges of said carrier forwardly of said chair back in the lumbar region of a chair user.
12. The apparatus as claimed in claim 9 including:
said chair frame assembly includes a vertical support member; and including a transverse member mounted to engage said vertical support member of said chair frame assembly, said transverse member having opposed end portions for slidable engagement with side edges of said carrier.
13. The apparatus as claimed in claim 11 wherein:
said transverse member slides along said vertical support.
14. The apparatus as claimed in claim 13 wherein:
said transverse member includes gripping members; and said gripping members and said edges of said carrier engage each other using a tongue and groove arrangement.
15. The apparatus as claimed in claim 1 wherein:
said carrier is pivotal under the influence of a chair user; and said carrier is connected to a chair seat which pivots in response to the pivot of said carrier.
16. The apparatus as claimed in claim 12 wherein:

said carrier is pivotal under the influence of a chair user; and said carrier is connected to a chair seat which pivots in response to the pivot of said carrier.
17. The apparatus as claimed in claim 1 wherein:
said carrier is resilient and stretchable; and said material is stretchable.
18. The apparatus as claimed in claim 1 wherein said material is of open mesh construction.
19. The apparatus as claimed in claim 18 wherein said material includes woven monofilaments.
20. The apparatus as claimed in claim 18 wherein said fabric includes woven multifilaments and monofilaments.
21. A back for a chair comprising:
a fabric panel;
a bendable carrier extending around the periphery of and fastened to edges of the fabric panel, said carrier being configured to be fastened along a bottom edge to a first frame member of said chair; and flexible joint means at opposed upper corners of said carrier;
said joint means being configured to be connectable to upper portions of second frame members;
wherein said flexible joint means and bendable carrier allow said fabric panel to flex as a chair user reclines against said fabric panel to thereby distribute forces against the user's back.
22. A lumbar support assembly for a chair having a flexible back, comprising:
at least one generally vertical support member disposed to the rear of the chair back; and a transverse member having means to engage said at least one vertical support, said transverse member having opposed ends with gripping means on each end for gripping opposed edges of said flexible back;

wherein said transverse member is configured to force said opposed edges of said flexible back forwardly of said chair back in the lumbar region of the chair user to provide support therefor.
23. The assembly of claim 22 wherein said flexible chair back comprises fabric.
24. The assembly of claim 23 wherein said fabric is of open mesh construction.
25. The assembly of claim 22 wherein said flexible back comprises a fabric member held around its periphery by a carrier member.
26. The assembly of claim 25 wherein said carrier member is semi-rigid and bendable.
27. The assembly of claim 25 wherein said gripping means are slotted to receive edges of said carrier member.
28. The assembly of claim 25 wherein said gripping means is slidable on said carrier member.
29. The assembly of claim 25 wherein said carrier has edges formed with slots therein and said gripping means are received in said slots.
30. The assembly of claim 29 wherein said slots and gripping means are cooperable to provide for selective vertical movement of said gripping means.
CA2450026A 2001-06-15 2002-06-14 Lumbar support for a chair Expired - Fee Related CA2450026C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US09/882,140 US7014269B2 (en) 2001-06-15 2001-06-15 Chair back construction
US09/881,795 2001-06-15
US09/882,140 2001-06-15
US09/881,795 US6572190B2 (en) 2001-06-15 2001-06-15 Lumbar support for a chair
US10/077,540 2002-02-15
US10/077,540 US6729691B2 (en) 2001-06-15 2002-02-15 Chair back construction
PCT/US2002/018786 WO2002102197A2 (en) 2001-06-15 2002-06-14 Chair back construction with lumbar support

Publications (2)

Publication Number Publication Date
CA2450026A1 true CA2450026A1 (en) 2002-12-27
CA2450026C CA2450026C (en) 2010-08-31

Family

ID=27373128

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2450026A Expired - Fee Related CA2450026C (en) 2001-06-15 2002-06-14 Lumbar support for a chair

Country Status (8)

Country Link
US (4) US7014269B2 (en)
KR (1) KR100641957B1 (en)
CN (1) CN1301676C (en)
AU (1) AU2002345677A1 (en)
CA (1) CA2450026C (en)
GB (1) GB2392614B (en)
MX (1) MXPA03011394A (en)
WO (1) WO2002102197A2 (en)

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US7066537B2 (en) 2006-06-27
US20020190552A1 (en) 2002-12-19
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WO2002102197B1 (en) 2004-01-08
US20020190564A1 (en) 2002-12-19
US7014269B2 (en) 2006-03-21
KR100641957B1 (en) 2006-11-02
CN1301676C (en) 2007-02-28
GB0328737D0 (en) 2004-01-14
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CA2450026C (en) 2010-08-31
US6572190B2 (en) 2003-06-03

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