US3223450A - Upholstered furniture - Google Patents

Upholstered furniture Download PDF

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Publication number
US3223450A
US3223450A US414516A US41451664A US3223450A US 3223450 A US3223450 A US 3223450A US 414516 A US414516 A US 414516A US 41451664 A US41451664 A US 41451664A US 3223450 A US3223450 A US 3223450A
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US
United States
Prior art keywords
frame
shell
slot
furniture
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.)
Expired - Lifetime
Application number
US414516A
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English (en)
Inventor
Charles R Pollock
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Individual
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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
Priority to US414516A priority Critical patent/US3223450A/en
Priority to GB13298/65A priority patent/GB1037829A/en
Priority to CH435065A priority patent/CH452820A/de
Priority to DE19651529578 priority patent/DE1529578B2/de
Priority to FR18777A priority patent/FR1449709A/fr
Application granted granted Critical
Publication of US3223450A publication Critical patent/US3223450A/en
Anticipated expiration legal-status Critical
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
    • 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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/002—Chair or stool bases
    • A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office 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
    • A47C7/02—Seat parts
    • A47C7/18—Seat parts having foamed material included in cushioning part
    • A47C7/185—Seat parts having foamed material included in cushioning part with a stiff, rigid support
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B13/00—Details of tables or desks
    • A47B13/02—Underframes
    • A47B13/023—Underframes with a central column
    • A47B2013/025—Underframes with a central column having radial feet assembled to the base of the column

Definitions

  • the present invention relates generally to furniture construction and more particularly to upholstered structures of simple functional design and of exceptional strength.
  • a furniture structure wherein a plastic shell having a desired contour or configuration is supported peripherally by a continuous frame of high strength whereby load stresses imposed on the shell are effectively distributed throughout the frame, rather than concentrated or localized in one section thereof, the frame in turn being securely mounted on a stanchion or other supporting means independent of the shell.
  • a significant feature of this invention is that all components of the furniture structure which require rigid anchoring, such as the arm rests, are attached to the frame and not to the shell, whereby the load imposed on the shell will in no way stress said attachments.
  • an object of the invention is to provide a structure of the above-described type which may be quickly assembled and manufactured at relatively low cost.
  • Yet another object of the invention is to provide an upholstered article of furniture in which a shell is peripherally supported on a frame and wherein the uphosltery is constituted by several cushioned sections which individually may be snapped into place on the shell and readily removed therefrom for cleaning or replacement.
  • the frame is constituted by a continuous aluminum extruded rod bent to conform to the peripheral contour of a shell, the rod having a longitudinally extending slot for receiving the peripheral lip of the shell, the frame being connected to a cross-brace independent of the shell.
  • the legs or other pedestal means are coupled to the cross-brace.
  • FIG. 1 is a perspective view of an upholstered chair constructed in accordance with the invention
  • FIG. 2 is a perspective view of the shell of the chair prior to its connection to the frame;
  • FIG. 3 shows the arm rest, the shell and the cross-beam members separated from the frame
  • FIG. 4 illustrates the chair with the cushions omitted and an arm rest removed
  • FIG. 5 illustrates the manner in which the cushions are attached to the shell
  • FIG. 6 is a section taken in the plane indicated by lines 66 of FIG. 4;
  • FIG. 7 is a section taken in the plane indicated by lines 7-7 in FIG. 5;
  • FIG. 8 is a section taken in the frame of the chair indicating one way of securing a brace or shell thereto;
  • FIG. 9 is a section taken in the frame of the chair indicating how the bead is secured thereto;
  • FIG. 10 is a section taken through the frame indicating how the arm rest is secured thereto;
  • FIG. 11 illustrates, in perspective, the manner in which the legs are attached to the stanchion of the chair
  • FIG. 12 is a bottom plan view of the legs
  • FIG. 13 is a section taken through the frame showing how the ends thereof are interconnected
  • FIG. 14 illustrates how the beading is attached to the frame
  • FIG. 15 shows another embodiment of the invention for cushioning the chair
  • FIG. 16 is a segmentary cross-sectional view similar to FIG. 15 illustrating another method of attaching the upholstery
  • FIG. 17 is a segmentary cross-sectional view of the embodiment disclosed in FIG. 16 with the upholstery removed from the frame;
  • FIG. 18 is a cross-sectional view of another embodiment of the invention illustrating the shell being clamped into position in the frame;
  • FIG. 19 is a segmentary cross-sectional view of the embodiment disclosed in FIG. 18 illustrating the periphery of the shell being received in the frame;
  • FIG. 20 is a segmentary cross-sectional view similar to FIG. 19 illustrating the periphery of the shell within the frame.
  • a chair in accordance with the invention comprises a continuous frame 10, adapted to support a suitably contoured shell 11 to which are attached cushioning elements 12, 13 and 14element 12 being a seat, element 13, a lower back rest and element 14, an upper back rest.
  • the frame is mounted on a stanchion 15 by means of a cross-brace 16 connected to the frame, the stanchion being anchored in star legs 17. Also attached to the frame are a pair of arm rests 18 and 19.
  • the frame is constituted by a single elongated extruded aluminum rod having two longitudinally extending parallel slots 20 and 21 formed therein.
  • the extruded rod is bent to conform continuously to the periphery of the shell, the ends of the rod being joined by means of a suitable juncture plug 22, tightly inserted in slot 21 and serving to hold the terminals together.
  • Slot 20 has a key-hole sectional shape to receive a beading or a welt, whereas slot 21 has a T-shaped configuration to receive tongues, rivets and screws in a manner to be later described.
  • the ends of the cross-brace member 16 which may also be of aluminum, are bifurcated and terminate in tongues 16a and 16b.
  • the tongues 16a and 1611 are received within slot 21 of the frame and the brace, as shown in FIG. 8, is securely attached thereto by means of pins 23 which are inserted through small holes in the rod into the tongues.
  • the brace may be formed by a casting, a stamping or a wire assembly.
  • components may be attached to the frame by means of so-called Sofco type rivets which comprise a steel pin which when driven inwardly, forces the fingers of the rivet outwardly into the enlarged channel of slot 21 to effect a locking action. It is to be understood that this attachment can also be made by means of screws which can be turned into the slot, the screw acting to cut a thread into the aluminum extrusion.
  • the shell of the chair is made from a single sheet of plastic which is formed or molded to the desired shape of the chair.
  • the shell may be vacuum formed or injection molded and may be made of polystyrene or other suitable material.
  • the periphery of the shell is provided with cut-outs 11a to allow for the insertion of the cross-brace tongues into the supporting frame, the periphery having an outwardly extending lip 11b which is received within the narrow opening of slot 21 in the frame.
  • the peripheral lip on the edge of the shell is inserted while the frame is open, as shown in FIG. 2, and after the shell is in place, the ends of the frame are brought together and joined with the juncture plug 22.
  • the shell may then be further locked into place by means of pins, rivets or screws in the manner previously described.
  • the arm rests are constituted by continuous loops of a suitable plastic material or aluminum and having a generally rectangular configuration, the lower side being secured to the frame 10 by means of screws 24 in the manner shown in FIG. 10.
  • Slot 20 which runs above slot 21 in the frame and parallel thereto, is used to receive a decorative and protective beading which may be formed of leather, simulated leather or fabric, or as shown in FIGS. 9 and 14, this beading is constituted by two parallel strips 25 and 26 of folded material which are stitched together at their lower edge, folded strip 25 having a cord 27 therein to form a circular head portion conforming to the crosssectional shape of the key-hole slot.
  • a decorative and protective beading which may be formed of leather, simulated leather or fabric, or as shown in FIGS. 9 and 14, this beading is constituted by two parallel strips 25 and 26 of folded material which are stitched together at their lower edge, folded strip 25 having a cord 27 therein to form a circular head portion conforming to the crosssectional shape of the key-hole slot.
  • the beading is applied simply by passing strip 25 into slot 20, the
  • hollow stanchion 15 is received snugly within a circular boss 28 centrally fastened to the underside of the cross-brace 16 and extending through a hole 29 in the shell 11, as best seen in FIG. 7.
  • stanchion is independent of the shell and firmly supports the frame through the cross-brace.
  • the four star feet 17 of the chair are respectively provided with quadrant pieces 17a, 17b, 17c and 17d, which fit together to form a cylinder which telescopes within the lower end of the stanchion pipe 15 and is locked therein by means of a collar 30.
  • the quad rant pieces are further held together by means of cross staples 31, as shown in FIG. 12.
  • Each cushion element as illustrated by cushion 12, FIGS.- and 7, is constituted simply by a resilient foam rubber body 12a supported on a pressboard base 12b and covered by a sheet 12c of cloth or leather whose folded in edges are stapled to the pressboard.
  • the cushion is an independent element and is removably held in place by snap buttons 32, one member of which is secured to the shell and the complementary member on the pressboard backing on the cushion.
  • snap buttons 32 one member of which is secured to the shell and the complementary member on the pressboard backing on the cushion.
  • cushioning pads 33 may be made self-sufficient and merely laid in place on the shell 11 of the chair, the pads being covered and secured to the chair by an upholstery material 34 which is contoured to the shape of the frame.
  • the material 34 is peripherally bound to the frame by means of a continuous zipper 35, one side tape of which is sewed or otherwise connected to the material, the other side tape of which is connected to a beading 35 received within slot 20 of the frame.
  • the zipper is preferably of the hidden type manufactured by Y.K.K. (Japan), in which the metal parts of the fastener elements are completely hidden from view, leaving a seam line when closed, only the tab for the slider being exposed. It is also possible with a hidden zipper of this type to make one of the zipper tapes with a welt or bead on it which will be directly received in slot 20, so that there will be no need to sew the zipper tape to a separate bead.
  • the invention is useable also with other types of zippers or slide fasteners, such as those of the continuous helical type.
  • FIGS. 16 and 17 an alternate means of attaching the upholstery to the frame is disclosed and the frame is similar to frame 10 described earlier being constituted by a single elongated extruded aluminum rod having two longitudinally extending parallel slots and 121 formed therein.
  • Slot 121 is identical in configuration to slot 20 described earlier.
  • slot 120 is in the form of an arrowhead and designed to receive therein the arrowshaped head 122 of plastic extruded piece 123 which is fastened to upholstery 124 by suitable stittching 125 through welt 126.
  • Slot 121 is similar to slot 21 to receive therein the edge of frame 127.
  • the arrow-shaped plastic piece 123 is provided with shoulder 128 above head 122 so that the member can be inserted within slot 120 by application of pressure at shoulder 128 by means of a suitable tool and the lower portion 122' of head 122 being plastic will collapse upwardly as head 122 is moved in the direction of the arrow as indicated in FIG. 17 and expands the position shown in FIG. 16 when it has been received in the slot. Thus, member 123 will not be withdrawn from slot 120. For certain applications it may be found desirable to provide either of slots 120 and 121 or both at an angle with the horizontal.
  • FIGS. 18-20 disclose another form of the invention wherein shell 136 constituting the chair seat is provided with a normal dimension in the horizontal plane greater than the similar dimension of frame 131 containing slot 132.
  • the slot 132 is the only slot in frame 131 and is disposed angularly so that upon stressing shell inwardly by a suitable clamp such as 133, slot 132 can receive therein the periphery of shell 130.
  • a suitable clamp such as 133
  • slot 132 Upon with drawal of clamp 133 and release of shell 130, the shell attempts to achieve its normal dimension in the horizontal plane providing outwardly directed forces which maintain the shell within slot 132.
  • a bead 134 is formed at the lower peripheral edge of frame 130 and received within enlarged portion 132"of slot 132, thus insuring the continued maintenance of the periphery of the shell within the slot.
  • bead 134 is shown integral with the frame it may be provided by a separate element such as a separately added bead or a series. of clips. Also under certain circumstances it may be necessary to provide a peripheral bead attached to the shell within the slot while maintaining the shell wholly without the slot.
  • An article of furniture comprising an elongated rod bent to a desired contour to form a continuous frame, said rod having a longitudinally extending slot formed therein, a relatively rigid shell suspended within said frame and supported thereby, said shell having a continuous peripheral lip received within said slot to suspend said shell from said frame and to cause load stresses imposed thereon to be effectively distributed throughout said frame, a crossbrace attached to said frame and provided with extremities received in said slot, said extremities. extending through cut-outs in said shell, and means coupled to said brace to support said article above floor level.
  • a chair comprising an elongated rod curved to form a continuous chair frame, said rod having a longitudinally extending slot therein, a relatively rigid contoured shell suspended in said frame to define both the seat and the back of said chair and provided with a continuous peripheral lip received in said slot to suspend said shell from said frame and to cause load stresses imposed thereon to be effectively distributed throughout said frame, a cross,- brace connected to opposing arms of said frame adjacent the seat portion of said shell and including tongues receivable in said slot through cut-outs in said frame, and a leg support for said chair coupled to said cross-brace, and fastening means insertable in said slot to lock the chair elements received therein.
  • An article of furniture comprising an elongated rod bent to a desired contour to form a continuous, frame, said rod having first and second slots in parallel relation extending longitudinally therein, a shell suspended within said frame and supported thereby, said shell having a continuous peripheral lip received Within said first slot to suspend said shell from said frame and to cause load stresses imposed thereon to be effectively distributed throughout said frame, cushioning pads lying against said shell, and an upholstery material covering said pads and removably connected to the second slot of said frame.
  • connection between said material and said frame is avoided by a continuous zipper of the hidden type in which the teeth thereof are hidden from view to present a seam line when closed, one side tape of which is secured to said upholstery material, the other side tape of which is secured to a beading received in said second slot.
  • An article of furniture comprising a rigid shell adapted to be stressed by a seated person and having a peripheral outwardly extending lip forming an angle with the remainder of said shell, a frame including an elongated frame member extending along the periphery of the shell and having a slot extending throughout the length of the frame member, said slot facing inwardly toward said shell and receiving said lip which extends therethrough in the plane of said slot throughout the length thereof so that load stresses imposed on the shell are effectively distributed throughout the frame member, and means supporting said frame.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Connection Of Plates (AREA)
US414516A 1964-11-23 1964-11-23 Upholstered furniture Expired - Lifetime US3223450A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US414516A US3223450A (en) 1964-11-23 1964-11-23 Upholstered furniture
GB13298/65A GB1037829A (en) 1964-11-23 1965-03-29 Article of furniture
CH435065A CH452820A (de) 1964-11-23 1965-03-30 Sitzpolstermöbel
DE19651529578 DE1529578B2 (de) 1964-11-23 1965-04-03 Sitzmöbel, insbesondere Polsterstuhl, mit einem Rahmen und einem von dem Rahmen getragenen Sitzteil
FR18777A FR1449709A (fr) 1964-11-23 1965-05-28 Siège capitonné

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US414516A US3223450A (en) 1964-11-23 1964-11-23 Upholstered furniture
FR18777A FR1449709A (fr) 1964-11-23 1965-05-28 Siège capitonné

Publications (1)

Publication Number Publication Date
US3223450A true US3223450A (en) 1965-12-14

Family

ID=41258737

Family Applications (1)

Application Number Title Priority Date Filing Date
US414516A Expired - Lifetime US3223450A (en) 1964-11-23 1964-11-23 Upholstered furniture

Country Status (5)

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US (1) US3223450A (de)
CH (1) CH452820A (de)
DE (1) DE1529578B2 (de)
FR (1) FR1449709A (de)
GB (1) GB1037829A (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298743A (en) * 1965-06-10 1967-01-17 Knoll Associates Connector means for upholstery-frame connection
US3300251A (en) * 1965-06-10 1967-01-24 Knoll Associates Upholstery cover-frame connection
US3304121A (en) * 1964-08-11 1967-02-14 Soc Civ D Rech Etudes Ind Metal chairs
US3314721A (en) * 1966-01-25 1967-04-18 Leland C Smith Chair construction
US3601446A (en) * 1968-11-21 1971-08-24 Expo Nord Ab Piece of furniture
US3747978A (en) * 1972-03-07 1973-07-24 American Seating Co Transit seat with contoured plastic shell
US3788701A (en) * 1972-05-26 1974-01-29 All Steel Inc Chair construction
US3815956A (en) * 1972-01-03 1974-06-11 Mauser Kg Rotary armchair
US4836609A (en) * 1988-04-18 1989-06-06 Milsco Manufacturing Company Vehicle seat
US4853995A (en) * 1982-09-15 1989-08-08 Sears Manufacturing Company Molded cushion article
US5522645A (en) * 1994-04-01 1996-06-04 Milsco Manufacturing Company Seat having retained cushion
USD377424S (en) * 1991-05-06 1997-01-21 Hon Industries, Inc. Swivel chair
US6220661B1 (en) 1999-04-19 2001-04-24 Steelcase Development Inc. Chair back and method of assembly
US6499801B1 (en) 2000-03-03 2002-12-31 Steelcase Development Corporation Chair having removable cover and cushion
US8973990B2 (en) 2012-09-20 2015-03-10 Steelcase Inc. Chair assembly
USD742678S1 (en) 2012-09-20 2015-11-10 Steelcase Inc. Chair assembly
USD859045S1 (en) * 2016-10-24 2019-09-10 Sitland S.P.A. Chair base
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames
US11628106B1 (en) * 2015-03-11 2023-04-18 Rosiella L. Chitalu Wheelchair with integral massaging units

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143430A (en) * 1983-07-19 1985-02-13 Midland Metals Bases
DE3841531A1 (de) * 1988-12-09 1990-06-13 Bayer Ag Befestigung zwischen einem polsterbezug und einem das polster aufnehmenden traeger
GB2299503B (en) * 1995-04-01 1999-02-24 John Edward Grainger Mat assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667916A (en) * 1948-04-16 1954-02-02 Gorman C Burd Seat frame
US2901028A (en) * 1957-03-01 1959-08-25 Merton M Bottemiller Seat construction
US2973806A (en) * 1958-08-15 1961-03-07 Heywood Wakefield Co Chair with a removable upholstery cover
US3041109A (en) * 1958-09-29 1962-06-26 Miller Herman Inc Web and spreader furniture construction
US3061374A (en) * 1958-11-25 1962-10-30 Sarl Grosfillex Freres Collapsible seat

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667916A (en) * 1948-04-16 1954-02-02 Gorman C Burd Seat frame
US2901028A (en) * 1957-03-01 1959-08-25 Merton M Bottemiller Seat construction
US2973806A (en) * 1958-08-15 1961-03-07 Heywood Wakefield Co Chair with a removable upholstery cover
US3041109A (en) * 1958-09-29 1962-06-26 Miller Herman Inc Web and spreader furniture construction
US3061374A (en) * 1958-11-25 1962-10-30 Sarl Grosfillex Freres Collapsible seat

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304121A (en) * 1964-08-11 1967-02-14 Soc Civ D Rech Etudes Ind Metal chairs
US3298743A (en) * 1965-06-10 1967-01-17 Knoll Associates Connector means for upholstery-frame connection
US3300251A (en) * 1965-06-10 1967-01-24 Knoll Associates Upholstery cover-frame connection
US3314721A (en) * 1966-01-25 1967-04-18 Leland C Smith Chair construction
US3601446A (en) * 1968-11-21 1971-08-24 Expo Nord Ab Piece of furniture
US3815956A (en) * 1972-01-03 1974-06-11 Mauser Kg Rotary armchair
US3747978A (en) * 1972-03-07 1973-07-24 American Seating Co Transit seat with contoured plastic shell
USRE29522E (en) * 1972-03-07 1978-01-24 American Seating Company Transit seat with contoured plastic shell
US3788701A (en) * 1972-05-26 1974-01-29 All Steel Inc Chair construction
US4853995A (en) * 1982-09-15 1989-08-08 Sears Manufacturing Company Molded cushion article
US4836609A (en) * 1988-04-18 1989-06-06 Milsco Manufacturing Company Vehicle seat
USD377424S (en) * 1991-05-06 1997-01-21 Hon Industries, Inc. Swivel chair
US5522645A (en) * 1994-04-01 1996-06-04 Milsco Manufacturing Company Seat having retained cushion
US6220661B1 (en) 1999-04-19 2001-04-24 Steelcase Development Inc. Chair back and method of assembly
US6508509B2 (en) 1999-04-19 2003-01-21 Steelcase Development Corporation Back for seating unit and method of assembly
US6499801B1 (en) 2000-03-03 2002-12-31 Steelcase Development Corporation Chair having removable cover and cushion
USD742678S1 (en) 2012-09-20 2015-11-10 Steelcase Inc. Chair assembly
US9167910B2 (en) 2012-09-20 2015-10-27 Steelcase Inc. Chair assembly
US8973990B2 (en) 2012-09-20 2015-03-10 Steelcase Inc. Chair assembly
USD750406S1 (en) 2012-09-20 2016-03-01 Steelcase Inc. Chair assembly
US9706853B2 (en) 2012-09-20 2017-07-18 Steelcase Inc. Chair assembly
US9986848B2 (en) 2012-09-20 2018-06-05 Steelcase Inc. Chair assembly method
US10413083B2 (en) 2012-09-20 2019-09-17 Steelcase Inc. Chair assembly
US11628106B1 (en) * 2015-03-11 2023-04-18 Rosiella L. Chitalu Wheelchair with integral massaging units
USD859045S1 (en) * 2016-10-24 2019-09-10 Sitland S.P.A. Chair base
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames
US12075921B2 (en) 2019-01-17 2024-09-03 Hni Technologies Inc. Chairs including flexible frames

Also Published As

Publication number Publication date
FR1449709A (fr) 1966-05-06
DE1529578A1 (de) 1969-12-18
GB1037829A (en) 1966-08-03
CH452820A (de) 1968-03-15
DE1529578B2 (de) 1970-12-10

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