US3583759A - Molded chair shell - Google Patents

Molded chair shell Download PDF

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Publication number
US3583759A
US3583759A US866914A US3583759DA US3583759A US 3583759 A US3583759 A US 3583759A US 866914 A US866914 A US 866914A US 3583759D A US3583759D A US 3583759DA US 3583759 A US3583759 A US 3583759A
Authority
US
United States
Prior art keywords
shell
waist portion
chair
inch
waist
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US866914A
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English (en)
Inventor
Gideon A Kramer
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.)
JJB ACQUISITION Corp A CORP OF
REPUBLICBANK DALLAS DALLAS TEXAS A NATIONAL ASSOCIATION OF TEXAS
Original Assignee
American Desk Manufacturing Co
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 American Desk Manufacturing Co filed Critical American Desk Manufacturing Co
Application granted granted Critical
Publication of US3583759A publication Critical patent/US3583759A/en
Assigned to J.J.B. ACQUISITION CORPORATION A CORP. OF reassignment J.J.B. ACQUISITION CORPORATION A CORP. OF ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BUZZDUFF LIQUIDATING INC.,
Assigned to AMERICAN DESK MANUFACTURING COMPANY reassignment AMERICAN DESK MANUFACTURING COMPANY CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE AUG. 5,1982 Assignors: JJB ACQUISITION CORPORATION,
Assigned to BUZZDUFF LIQUIDATING, INC. reassignment BUZZDUFF LIQUIDATING, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). AUG. 5,1982 Assignors: AMERICAN DESK MANUFACTURING COMPANY
Assigned to REPUBLICBANK DALLAS, DALLAS, TEXAS A NATIONAL ASSOCIATION OF TEXAS reassignment REPUBLICBANK DALLAS, DALLAS, TEXAS A NATIONAL ASSOCIATION OF TEXAS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AMERICAN DESK MAUFACTURING COMPANY
Anticipated expiration legal-status Critical
Assigned to AMERICAN DESK MANUFACTURING COMPANY reassignment AMERICAN DESK MANUFACTURING COMPANY RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: NCNB TEXAS NATIONAL BANK
Expired - Lifetime 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
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/12—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats with shell-shape seat and back-rest unit, e.g. having arm rests
    • 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
    • A47C5/00—Chairs of special materials
    • A47C5/12—Chairs of special materials of plastics, with or without reinforcement
    • 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
    • A47C7/02—Seat parts
    • A47C7/16—Seats made of wooden, plastics, or metal sheet material; Panel seats
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00—Chairs and seats
    • Y10S297/02—Molded

Definitions

  • 97l 3583759 SHEET 1 OF 2 INVENTOR. 4/050 ,4 KRAMER 1 m Eum+ MOLDED CHAIR sasu.
  • a further ob ject has been to overcome such problems with respect to chairs in which such a shell is flexibly secured in a frame at two laterally spaced points under the seat portion and at a single central point behind the middle of the back portion that pennit the desired distortion of the shell relative the rigid under structure.
  • FIG. 1 is a side view of a chair incorporating a frame and a chair shell produced according to this invention
  • FIG. 2 is a flattened diagrammatic view graphically showing various formation thicknesses of a preferred form of a molded chair shell
  • FIGS. 3, 4 and are cross-sectional views taken, respectively, in the planes 3-3, 4-4 and 5-5 of FIG. 2;
  • FIG. 6 is a cross section of the waist portion of the shell of FIG. 1 showing the concavoconvex nature of the shell at the waist portion;
  • FIG. 7 is a partial plan view of an alternate construction according to this invention.
  • FIG. 8 is a cross section on line 8-8 of FIG. 7;
  • FIG. 9 is a cross section on line 9-9 of FIG. 7;
  • FIG. 10 is a schematic sketch illustrating a functional design principle embodied in the chair shell of this invention.
  • FIG. 11 is a cross section of the waist portion of a flanged chair shell of the prior art
  • FIG. 12 is a cross section of an alternate edge reinforced waist section of a prior art chair shell design.
  • FIG. 13 is a cross section of an alternate structure stiffening and reinforcing the shell waist portion.
  • Typical of such prior art construction is the flange l6, seen in FIG. 11, at the margin of the waist portion of shell 18.
  • the fissures mentioned generally occurred in the region indicated 20 in FIG. 11. Their occurrence becomes particularly apparent when the shell is flexed in directions tending to open the ell-shaped whereupon the forces applied to the shell tend to close the ell-shape. In that case the surface 20 is subjected to compressive forces tending to reduce its surface dimensions.
  • FIG. 12 An alternate solution to the problem is illustrated in FIG. 12 in which, in lieu of the flange 16, as shown in FIG. 11, the chair shell 22 at the marginal edges of its waist portion has a thickened edge 24 materially greater than the medial thickness of the waist 22 to resist the flexural and torsional forces.
  • the chair shell can be made so rigid and be so inflexibly mounted in a chair frame that no flexure in the waist portion between the seat and the back portion is permitted. This, however, defeats the purpose of this chair design which is purposely flexible.
  • the seat portion and the back portion are mounted in supporting frame structure at two points laterally spaced apart and located beneath the seat portion and at a single centrally located point behind the back portion.
  • the chair comprises supporting frame structure including an upright column 30 having splayed feet 32 to bear on the floor. Rising above column 30 and extending rearward is an ogeeshaped arm 34 which is medial of the frame. Forward curving support arm 36 is bifurcated to provide two arms 38 that spread from the central column 30 forward and laterally to support the seat. Central arm 40 medial of flared arms 38 carries a stop or bumper 42.
  • the chair shell 44 comprises a seat portion 46 and a back portion 48 integrally joined by the concavoconvex flangeless waist portion 47.
  • a flexible mount 50 is secured to the center back 48 and is also secured to bar 34 by a fastening 52.
  • each of the anns 38 is likewise secured beneath the seat portion at points laterally spaced apart with respect to the median of the shell 44 and approximately in the fore-to-aft middle of seat portion 46.
  • the forward edge of seat 46 is cantilevered with respect to the remainder of the structure. Bar 40 and the bumper 42 carried thereby may be used to limit downward deflection of seat 46.
  • a chair shell designed to accommodate predetermined stresses and strains may have applied to it forces that exceed the structural limitations and flexural characteristics of the material.
  • an overweight person or, as is more likely, a normal weight person may sit on the chair in such manner that an excessive amount of loading force is applied to the forward portion of the seat ahead of the pivots thus tending to longitudinally straighten the waist portion.
  • This may subject the skin surfaces of the shell to excessive compressive and tensile forces.
  • bumpers 42 as mounted on bars 40, may be provided.
  • the spacing between the bumpers 42 and the bottom of the shell in the at rest" position permits the designer to vary the stopping action of the bumper with respect to any particular shell design.
  • a shell may be designed with such heavy cross sections that the stops may not be needed to prevent excessive forces. This, however, defeats the purpose of the invention because such a heavy shell would not have the desired flexure characteristics.
  • FIG. 2 shows a preferred form of fiberglass-reinforced molded shell as it would appear when flattened to schematically depict its shape and structural thicknesses.
  • the shell is formed by laying up fiberglass-reinforcing filaments and fluid plastic material prior to molding in a variety of thicknesses in the pattern shown in FIG. 2.
  • area 62 which has a final molded thickness in the range of between about 0.090 inch and about 0.120 inch.
  • edge areas 64, 66, 68 and 70 are built up to a substantial thickness comparable to area 60.
  • area 60 has a thickness of 0.109 inch
  • area 62 has a thickness of 0.120 inch
  • the marginal area 72 of the waist 47 has a thickness of 0.100 inch.
  • the shell is thickened to 0.300 inch in areas 74 and 76, in the latter of which is mounted stud 70, as seen in FIG. 5, by which mount 54 is attached to seat portion 46.
  • FIG. 10 a hollow-walled hemisphere in the nature of a flexible hemispherical shell, for example, a half a rubber ball, is shown.
  • a hollow-walled hemisphere in the nature of a flexible hemispherical shell, for example, a half a rubber ball, is shown.
  • FIGS. 7, 0 and 9 is shown an alternative construction in which the chair shell 90, which may be of substantially uniform thickness throughout, is provided with auxiliary flexible means that bolster and reinforce the shell between its point of attachment to the resilient mount 50 and its points of attachment to the resilient mounts 54.
  • a flexible preformed arcuate resilient metallic member 92 having the upstanding portion 94 and the bifurcated legs 96 and 98, is provided. Member 92 is secured mechanically or adhesively in close proximity to the back and underside of the shell separated from the chair frame structure by the resilient mounts 50 and 54,54.
  • Member 92 has a predetermined flexibility of such a nature that it, added to the flexibility of the shell 90, in the medial waist portion of said shell, is less than the flexibility of the otherwise unsupported margins of the waist portion 47 which is preferably flangeless. In this arrangement there is appreciably less resistance to flexure at the waist margins than in the stiffer medial portion of the waist thus permitting flexing without undue elongation at the waist margins.
  • FIG. 13 Further modes of stiffening or strengthening a shell of substantially uniform thickness is shown in FIG. 13.
  • the shell 100 has a main rib I02 and, as desired, supplementary ribs 104 extending through the back side of the waist portion of the shell.
  • ribs 102, I04 By proportioning ribs 102, I04, various degrees of stiffness or resilience can be obtained without interfering with waist cupping while avoiding the application of excessive elongation forces at the margins of the waist.
  • a chair comprising:
  • an ell-shaped chair shell of fiberglass-reinforced molded plastic material having a seat portion and a back portion integrally joined thereto by a flexible concavoconvex waist portion;
  • said shell being secured by resilient mounts to supporting frame structure at two points laterally spaced apart and located beneath the seat portion and at one centrally located point behind the back portion; the resilient mounts as said points permitting the concavoconvex waist portion to cup as the relative positions of the seat and back portions change under loading;
  • the improvement comprising: flexible means separated from said frame by said mounts and in close proximity to said shell;
  • said flexible means extending between said one centrally located point and each of said two laterally spaced apart points and imparting to said shell, medial of said waist portion, a flexural rigidity appreciably greater than the flexural rigidity of the margins of said waist portion.
  • a chair according to claim 4 in which said shell, medial of said waist portion has a molded thickness of about 0. inch and the margins of said waist portion taper therefrom to a thickness of about 0100 inch.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)
US866914A 1969-10-16 1969-10-16 Molded chair shell Expired - Lifetime US3583759A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US86691469A 1969-10-16 1969-10-16
GB8965/71A GB1276273A (en) 1969-10-16 1971-04-07 Chairs
FR7112692A FR2133165A5 (de) 1969-10-16 1971-04-09
DE2118216A DE2118216C3 (de) 1969-10-16 1971-04-10 L-förmige Sitzschale für Sitzmöbel

Publications (1)

Publication Number Publication Date
US3583759A true US3583759A (en) 1971-06-08

Family

ID=43060071

Family Applications (1)

Application Number Title Priority Date Filing Date
US866914A Expired - Lifetime US3583759A (en) 1969-10-16 1969-10-16 Molded chair shell

Country Status (4)

Country Link
US (1) US3583759A (de)
DE (1) DE2118216C3 (de)
FR (1) FR2133165A5 (de)
GB (1) GB1276273A (de)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4781417A (en) * 1987-12-07 1988-11-01 Ford Motor Company Upholstered seat cushion support
US5123702A (en) * 1990-10-24 1992-06-23 Shelby Williams Industries, Inc. Interaction-high density stacking chair
US5308142A (en) * 1992-01-23 1994-05-03 Steelcase, Inc. Chair with arm mounted motion control
US5516134A (en) * 1994-09-20 1996-05-14 Perfect Season, Inc. Seat for a wheeled vehicle
US5577811A (en) * 1995-06-07 1996-11-26 Hon Industries Inc. Ergonomic chair
US5733003A (en) * 1995-08-25 1998-03-31 Xsci, Inc. Child safety seat
US5887951A (en) * 1995-09-15 1999-03-30 Willingham; W. Preston Orthopedic seating orthosis for correcting posture and restricting gluteal spreading
US6179255B1 (en) 1999-07-22 2001-01-30 John W. Radford Seat mounting assembly
US6811227B2 (en) 2003-03-24 2004-11-02 Lear Corporation Firm cushion
US6874831B1 (en) * 2000-07-06 2005-04-05 Compagnie Plastic Omnium Front structure for a motor vehicle
US20070007812A1 (en) * 2003-08-28 2007-01-11 Peter Doricko Seat area
US7523992B1 (en) * 2007-08-02 2009-04-28 Da Yin Wei Tong Co., Ltd. Mechanisms for flexibly securing J-bar to chair backrest and chair headrest respectively
US20100038946A1 (en) * 2008-08-11 2010-02-18 Hni Technologies Inc. Seat damper assembly
US9560917B2 (en) 2014-11-26 2017-02-07 Steelcase Inc. Recline adjustment system for chair
USD802951S1 (en) 2016-04-12 2017-11-21 Steelcase Inc. Chair
USD804209S1 (en) 2016-04-12 2017-12-05 Steelcase Inc. Chair
USD804839S1 (en) 2016-04-12 2017-12-12 Steelcase Inc. Chair
USD804841S1 (en) 2016-04-12 2017-12-12 Steelcase Inc. Chair
USD804876S1 (en) 2016-04-12 2017-12-12 Steelcase Inc. Chair
USD804840S1 (en) 2016-04-12 2017-12-12 Steelcase Inc. Chair
USD804875S1 (en) 2016-04-12 2017-12-12 Steelcase Inc. Chair
USD808187S1 (en) 2016-04-12 2018-01-23 Steelcase Inc. Seating shell
USD821793S1 (en) 2016-04-12 2018-07-03 Steelcase Inc. Seating shell
US10016061B2 (en) * 2016-02-15 2018-07-10 Interstuhl Bueromoebel Gmbh & Co. Kg Backrest for an office chair
US10021984B2 (en) 2015-04-13 2018-07-17 Steelcase Inc. Seating arrangement
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
USD932203S1 (en) 2016-04-12 2021-10-05 Steelcase Inc. Seating arrangement
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11382429B2 (en) * 2018-05-30 2022-07-12 Aichi Co., Ltd. Backrest and chair
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2222840C2 (de) * 1972-05-10 1984-05-17 Baresel-Bofinger, Rudolf, 7129 Ilsfeld Sessel
JPS5588713A (en) * 1978-12-27 1980-07-04 Tachikawa Spring Co Sheet for car in synthetic resin
DE8504604U1 (de) * 1985-02-19 1986-06-19 Eisen- Und Drahtwerk Erlau Ag, 7080 Aalen Sitzmöbel
US5567012A (en) * 1986-04-10 1996-10-22 Steelcase, Inc. Chair control
US5050931A (en) * 1986-04-10 1991-09-24 Steelcase Inc. Controlled deflection front lip for seating
DE3622038A1 (de) * 1986-07-01 1988-01-07 Kembo Bv Stuhl oder sessel
DE3633696A1 (de) * 1986-10-03 1988-04-14 Froescher August Gmbh Co Kg Stuhl
DE10397012A5 (de) 2002-02-13 2014-11-27 Herman Miller, Inc. Neigesessel mit flexibler Lehne, einstellbaren Armlehnen und einstellbarer Sitztiefe und Verfahren für seine Verwendung
US7077478B2 (en) * 2004-05-31 2006-07-18 Honda Motor Co., Ltd. Seat for vehicle
DE202010000811U1 (de) * 2010-01-12 2011-05-19 Topstar GmbH, 86863 Sitz- oder Liegemöbel
USD657166S1 (en) 2010-04-13 2012-04-10 Herman Miller, Inc. Chair
USD650206S1 (en) 2010-04-13 2011-12-13 Herman Miller, Inc. Chair
USD637423S1 (en) 2010-04-13 2011-05-10 Herman Miller, Inc. Chair
USD652657S1 (en) 2010-04-13 2012-01-24 Herman Miller, Inc. Chair
USD653061S1 (en) 2010-04-13 2012-01-31 Herman Miller, Inc. Chair
US8449037B2 (en) 2010-04-13 2013-05-28 Herman Miller, Inc. Seating structure with a contoured flexible backrest
USD639091S1 (en) 2010-04-13 2011-06-07 Herman Miller, Inc. Backrest

Citations (4)

* Cited by examiner, † Cited by third party
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US3133765A (en) * 1962-08-30 1964-05-19 Ion Corp Chair
US3235309A (en) * 1963-12-23 1966-02-15 Brunswick Corp Chair
US3328085A (en) * 1966-02-09 1967-06-27 Gen Tire & Rubber Co Seat suspension
US3476342A (en) * 1968-01-26 1969-11-04 Griggs Equipment Inc Chair bracket

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133765A (en) * 1962-08-30 1964-05-19 Ion Corp Chair
US3235309A (en) * 1963-12-23 1966-02-15 Brunswick Corp Chair
US3328085A (en) * 1966-02-09 1967-06-27 Gen Tire & Rubber Co Seat suspension
US3476342A (en) * 1968-01-26 1969-11-04 Griggs Equipment Inc Chair bracket

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4781417A (en) * 1987-12-07 1988-11-01 Ford Motor Company Upholstered seat cushion support
US5123702A (en) * 1990-10-24 1992-06-23 Shelby Williams Industries, Inc. Interaction-high density stacking chair
US5308142A (en) * 1992-01-23 1994-05-03 Steelcase, Inc. Chair with arm mounted motion control
US5516196A (en) * 1992-01-23 1996-05-14 Steelcase, Inc. Chair with arm mounted motion control
US5516134A (en) * 1994-09-20 1996-05-14 Perfect Season, Inc. Seat for a wheeled vehicle
US5577811A (en) * 1995-06-07 1996-11-26 Hon Industries Inc. Ergonomic chair
US5733003A (en) * 1995-08-25 1998-03-31 Xsci, Inc. Child safety seat
US5887951A (en) * 1995-09-15 1999-03-30 Willingham; W. Preston Orthopedic seating orthosis for correcting posture and restricting gluteal spreading
US6179255B1 (en) 1999-07-22 2001-01-30 John W. Radford Seat mounting assembly
US6874831B1 (en) * 2000-07-06 2005-04-05 Compagnie Plastic Omnium Front structure for a motor vehicle
US6811227B2 (en) 2003-03-24 2004-11-02 Lear Corporation Firm cushion
US20070007812A1 (en) * 2003-08-28 2007-01-11 Peter Doricko Seat area
US7523992B1 (en) * 2007-08-02 2009-04-28 Da Yin Wei Tong Co., Ltd. Mechanisms for flexibly securing J-bar to chair backrest and chair headrest respectively
US20100038946A1 (en) * 2008-08-11 2010-02-18 Hni Technologies Inc. Seat damper assembly
US8322794B2 (en) * 2008-08-11 2012-12-04 Hni Technologies Inc. Seat damper assembly
US9560917B2 (en) 2014-11-26 2017-02-07 Steelcase Inc. Recline adjustment system for chair
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11963621B2 (en) 2015-04-13 2024-04-23 Steelcase Inc. Seating arrangement
US11553797B2 (en) 2015-04-13 2023-01-17 Steelcase Inc. Seating arrangement
US11324325B2 (en) 2015-04-13 2022-05-10 Steelcase Inc. Seating arrangement
US11096497B2 (en) 2015-04-13 2021-08-24 Steelcase Inc. Seating arrangement
US10575648B2 (en) 2015-04-13 2020-03-03 Steelcase Inc. Seating arrangement
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
US10021984B2 (en) 2015-04-13 2018-07-17 Steelcase Inc. Seating arrangement
US10016061B2 (en) * 2016-02-15 2018-07-10 Interstuhl Bueromoebel Gmbh & Co. Kg Backrest for an office chair
USD821793S1 (en) 2016-04-12 2018-07-03 Steelcase Inc. Seating shell
USD804839S1 (en) 2016-04-12 2017-12-12 Steelcase Inc. Chair
USD808187S1 (en) 2016-04-12 2018-01-23 Steelcase Inc. Seating shell
USD804875S1 (en) 2016-04-12 2017-12-12 Steelcase Inc. Chair
USD804841S1 (en) 2016-04-12 2017-12-12 Steelcase Inc. Chair
USD804840S1 (en) 2016-04-12 2017-12-12 Steelcase Inc. Chair
USD804209S1 (en) 2016-04-12 2017-12-05 Steelcase Inc. Chair
USD932203S1 (en) 2016-04-12 2021-10-05 Steelcase Inc. Seating arrangement
USD802951S1 (en) 2016-04-12 2017-11-21 Steelcase Inc. Chair
USD804876S1 (en) 2016-04-12 2017-12-12 Steelcase Inc. Chair
US11825955B2 (en) 2017-06-09 2023-11-28 Steelcase Inc. Seating arrangement and method of construction
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
US11382429B2 (en) * 2018-05-30 2022-07-12 Aichi Co., Ltd. Backrest and chair
AU2019279177B2 (en) * 2018-05-30 2022-07-14 Aichi Co., Ltd. Backrest and chair
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US11602223B2 (en) 2019-02-21 2023-03-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11910934B2 (en) 2019-02-21 2024-02-27 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11786039B2 (en) 2019-12-13 2023-10-17 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11805913B2 (en) 2019-12-13 2023-11-07 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

Also Published As

Publication number Publication date
FR2133165A5 (de) 1972-11-24
DE2118216A1 (de) 1972-10-12
GB1276273A (en) 1972-06-01
DE2118216B2 (de) 1979-11-08
DE2118216C3 (de) 1980-07-24

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Legal Events

Date Code Title Description
AS Assignment

Owner name: AMERICAN DESK MANUFACTURING COMPANY, TEXAS

Free format text: CHANGE OF NAME;ASSIGNOR:JJB ACQUISITION CORPORATION,;REEL/FRAME:004141/0488

Effective date: 19830128

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