US3450435A - Furniture construction - Google Patents

Furniture construction Download PDF

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Publication number
US3450435A
US3450435A US627529A US3450435DA US3450435A US 3450435 A US3450435 A US 3450435A US 627529 A US627529 A US 627529A US 3450435D A US3450435D A US 3450435DA US 3450435 A US3450435 A US 3450435A
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United States
Prior art keywords
chair
shell
plastic shell
construction
framework
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Expired - Lifetime
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US627529A
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English (en)
Inventor
William I Stephens
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.)
Art Metal Knoll Corp
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Art Metal Knoll Corp
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Publication date
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    • 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
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/48—Upholstered article making
    • Y10T29/481—Method

Definitions

  • This invention relates to furniture, and more particularly, to chairs and similar articles of furniture.
  • the furniture construction envisioned by the present invention comprehends not only side chairs, but arm chairs and lounge chairs, all of which are of extremely simple construction but which provide structural rigidity and comfort for the user.
  • Another object is to provide chairs and the like which possess structural strength and durability and yet are extremely pleasing aesthetically.
  • Another object is to provide furniture that is extremely simple in design and is very readily constructed and assembled.
  • a fundamental difiiculty that is encountered in furniture construction is the necessity for reconciling the flexibility required for the actual body-supporting seat and back members of the furniture with the demand for simplicity and structural rigidity.
  • Some approaches to providing flexibility have resulted in arrangements such as the provision of a web that is stretched between sidesupporting members.
  • the flexible member then affords convenient replaceability, it does not contribute significantly to the structural strength needed for the chair frame so that the frame per se must be extremely rigid in construction, and this necessitates that the frame include a plurality of cross pieces or bracing members extending from one side of the chair frame to the other.
  • Other types of constructon known in the prior art while affording good structural rigidity, provide so at the expense of comfort and it is quite frequently the case that extra heavy cushion means must be provided for the users comfort.
  • One of the important features of the present invention resides in the unique blending of the desirable qualities imparted to furniture construction by wood grain with the moldable characteristics of synthetic materials such as plastic.
  • the wood grain characteristics are considered of fundamental importance in the appeal to most peoples aesthetic sensibilities.
  • the chair resulting from the unique blending is one not only having great structural strength, and therefore durability, but also, with greatly facilitated replaceability at minimum expense of the comfort-providing portions of the chair.
  • the structural strength possessed by the chair construction of the present invention stems from the fact that the chair frame, which is constituted of wooden members, and the unitary seatand-back plastic shell cooperate to stiffen each other, whereas individually, they are quite flexible.
  • the unitary plastic shell is molded so that its contours ideally fit the contours of the chair frame such that the plastic shell is readily secured at a significant extent of its total perimeter. Because of the contour of the plastic shell the body of a user is accommodated with a great degree of comfort; that is to say, although the plastic shell affords the aforenoted rigidity of structure when secured to the chair frame, it is resilient enough to yield under load. Moreover, this resilience is supplemented by the fact that the plastic shell, in accordance with a preferred form of the present invention, is covered by a layer of foam rubber and in turn this layer of foam rubber is completely covered by a fabric so as to result in an attractive seat and back for the chair.
  • the fabric When the fabric becomes soiled or worn, it can be simply removed, as will be explained hereinafter, and can be inexpensively replaced. Moreover, such replacement can be accomplished without return of the chair to the factory. Thus, the flexible shell forming the seat and back for the chair is retained in place and only the fabricand possibly the foam rubberneed be replaced.
  • an ancillary feature to the construction described above resides in the manner of attaching the aforenoted upholstery, i.e. the foam rubber pad and fabric combination that serves as a covering and cushioning means for the plastic shell.
  • the pad and its associated fabric are attached to the inner side of the shell before the shell is secured to the wooden frame.
  • a small margin of approximately one inch is left outside of a groove which extends around the periphery of the shell. This groove is adapted to receive the securing means, for example, in the form of staples, for securing the shell to the frame.
  • the margin of foam rubber is left unglued in this version and is simply peeled back, to expose the aforenoted groove, when it is desired to secure the shell to the frame.
  • the fabric margin that remains, i.e. the loose fabric edge is tucked in under the edge of the plastic shell which is defined by a flange-like portion extending beyond the groove.
  • the plastic shell is secured to the Wooden frame prior to covering the inner side of the shell with the upholstery pad and fabric combination.
  • the plastic shell is secured in the previously described manner by the use of staples to the chair frame.
  • the foam rubber pad is glued or cemented to the inner side of the shell and the loose fabric edge, as before, is tucked in under the flange-like portion of the plastic shell.
  • the chair of the present invention involves the construction of a framework consisting of two side sections that, except at the back-supporting region, are tied or connected together by only a single cross member.
  • This cross member is located such that it appears to define the margin of the forwardly extending extremity of the plastic shell. In other words, it appears to blend with the plastic shell and thereby contributes to the aesthetically pleasing look of the chair.
  • Each of the side sections comprises two basic parts or members, one of which defines a rear leg for the chair. In its extension upwardly, this part contributes to forming the backsupporting rail or edge member.
  • the other part or member of each section provides a front leg for the chair and is so constructed that it cooperates with the first part in defining the back-supporting edge member.
  • the second part is constructed specifically to define a horizontal seat-supporting rail, whereas in an alternative embodiment, the horizontal portion defines a support which makes contact with a flange on the plastic shell and the actual seatsupporting portion of the plastic shell is suspended therefrom.
  • the only cross member that is used for connecting the legs of the chair frame is a member extending from one of the front legs to the other and it is so positioned so that it extends horizontally at a point just below the lowermost portion of the shell member forming the chair seat. It is advantageously positioned inwardly of this lowermost portion whereby no contact of the user with this cross member is possible.
  • FIG. 1 is a front perspective view of a preferred embodiment of a chair in accordance with this invention.
  • FIG. 2 is a rear perspective view showing the arm rest removed from the chair frame.
  • FIG. 3 is a side view of the chair.
  • FIG. 4 is a sectional view taken on the line 4-4 of FIG. 3.
  • FIG. 5 is a sectional view taken on the line 5-5 of FIG. 3.
  • FIG. 6 is an enlarged sectional view taken on the line 6--6 of FIG. 3.
  • FIG. 7 is an enlarged view taken on the line 7--7 of FIG. 5.
  • FIG. 8 is an enlarged sectional view illustrating the step of securing the shell to the chair frame.
  • FIG. 9 is an enlarged sectional view showing the step of tucking in a fabric.
  • FIG. 10 is an exploded view showing the several parts of the chair of the present invention.
  • FIG. 11 is a rear perspective view of a modification in the securing of the plastic shell to the chair frame.
  • FIG. 12 is an enlarged sectional view taken on the line 12-12 of FIG. 11.
  • FIG. 13 is an exploded view showing the parts of another embodiment of a chair in accordance with the present invention.
  • FIG. 14 is a fragmentary view of a portion of the chair frame to show the construction of the laminated Wood stock of which the chair frame is formed.
  • the chair construction comprises a framework 10 which is formed of laminated wood stock which, as is well-known, provides good structural strength and stability.
  • stability in this context is that a bent or curved piece is in its normal shape when finished.
  • a panel of considerable width having separate veneers with bonding means between them, is placed in a press.
  • This laminated panel is curved between formed blocks or dies as the press closes; then, the pressure in the press holds the veneers in intimate contact while heat polymerizes the bonding agent.
  • the result is that a curved laminated panel is removed from the press.
  • the panel will remain in this shape.
  • the frame members are cut transversely from these panels and are of sufficient thickness to form the legs and rails of the chair.
  • each of the frame members has great strength because all, or substantially all, of the constituent veneers run the length of the frame member.
  • each of the side sections of the chair frame work 10 consists of the two basic parts or frame members designated 12a and 12b.
  • a fragment of the part 12b is shown broken away in FIG. 14 to illustrate the fact that the constituent veneers of the laminated wood stock forming this part 12b have been fashioned so that their individual grains all run in their same direction and extend the entire length of this part 12b.
  • the parts 12a and 12b posses great structural strength in and of themselves because of their aforedescribed fabrication, but they are joined together in such a manner as to retain such strength for the entire side section.
  • the parts 12a form the rear legs 14 for the chair, while the parts 12b define the front legs 18 for the chair and the seat-supporting side rails 19. Together, these parts form the back-supporting edge members 16.
  • the contacting portions of parts 12a and 12b in so defining these edge members are joined together by a well-known gluing process. It will be appreciated that this gluing together extends over a considerable distance and consequently contributes significantly to the goal of great structural strength for these side sections.
  • the h-shaped side sections thus strongly resemble the branches of a tree joined together to form a common bough and contrast sharply with the product of conventional techniques of joining frame members of this type, such as mortice and tenon arrangements, which, because of their nature, are not capable of providing the structural strength resulting from the described method of joinder.
  • the side sections of the chair framework 10 are joined together by the cross piece or bracing members 20 and 22.
  • the bracing member 22 is connected at the top of the chair back and is joined to the edge member 16 by a mortice and tenon arrangement.
  • the bracing member 20 extends from one side section to the other and is located so as to join the legs 18. This is also accomplished typically by a mortice and tenon arrangement.
  • arm rests 24 are provided. They are in a generally rectangular shape and are formed by two separate pieces suitably joined together, as can be appreciated by reference to FIG. 3. Each arm rest 24 is attached to its respective side section by the use of a plurality of threaded connectors 26 received in holes provided in the framework. The lower horizontal portion of the arm rests 24 are aligned with the horizontal run of the part 12b which form the side rails 19 and are spaced from the rails 19 by the spacers 21.
  • the framework 10 having a minimum of wooden frame members, is not perfectly rigid and would not normally serve in and of itself for general chair purposes. However, this frame construction is combined with a plastic shell as will now be described.
  • the plastic shell shown and designated 50 provides the actual load bearing surfaces of the seat and back of the chair.
  • This plastic shell 50 is of unitary construction and typically it is vacuum formed, or injection molded, and is preferably constituted of polyethylene or similar synthetic resin material. This material has the quality of being somewhat flexible, that is, of being resilient and capable of deformation when loaded. However, the plastic shell 50 is rigid enough so that when it is secured to the framework it cooperates therewith to produce an extremely rigid chair.
  • the plastic shell 50 is contoured to fit the body of the user and its contour is matched to the contour of the framework 10 so that the shell 50 may be secured throughout substantially its entire perimeter.
  • the plastic shell 50 is dish-shaped through most of its length, as may best be appreciated by reference to FIG. 5, so that it has a central concave portion 50a as seen in that figure and a flange-like portion 50b at which the shell 50 is secured to the framework.
  • a central concave portion 50a as seen in that figure
  • a flange-like portion 50b at which the shell 50 is secured to the framework.
  • at its longitudinal extremities that is, at the top section 500 of the portion forming the back of the chair, and at the forward section 50d of the portion forming the seat, there is no concavity.
  • the plastic shell 50 has a very straight profile except for the flaring outwardly of the upper portion of the back of the chair, and the flaring downwardly at the forward portion of the seat. Where it flares downwardly, it meets the bracing member 20 and its curvature thereat, that is, its downward curvature from one side of the chair to the other matches very closely the downward curvature of the bracing member 20. In appearance, then, the bracing member 20 does not stand out as a separate element and seems to form part of the chair seat.
  • the portions of the plastic shell 50 which define the seat and back of the chair are united by an arcuate section 50x.
  • This arcuate section 50x finds its counterpart in the chair framework.
  • the part 12b of the chair framework has an arcuate section 23 which joins the side rail 19, defined by the horizontal run of the part 1217, with the upwardly extending portion 25 of part 12!) that meets with a matching portion 27 so as to define together the backsupporting edge 16.
  • a cushioning means is aflixed to one side, i.e. the inner side of the shell that will be in contact with the users body.
  • This cushioning means is a supplement to the comfort provided by the flexibility of the shell 50.
  • the cushioning means consists of a layer 52 of foam rubber or like material.
  • the layer of foam rubber is covered with a layer of fabric 54 and the fabric is extended so as to cover the outer side of the plastic shell 50'.
  • the complete coverage of the plastic shell by the fabric 54 yields a very attractive finish for the chair.
  • the shell need not be completely covered if the back side has a suitably attractive finish as is.
  • a technique in accordance with a specfic feature of the present invention is utilized for the securing of the shell 50 and for the securing of the cushion and fabric combination.
  • the fabric 54 is in contact with the outer surface 500 and is conventionally adhered thereto by gluing, for example.
  • the edge of the fabric 54 in contact with the outer surface 500 is seen to terminate in the space between the shell 50 and the framework 10.
  • a typical point of securing the shell 50 to the framework 10 is illustrated here, and either version of the upholstery attachment feature may be applied. That is to say, either the preferable way of first securing the shell to the framework may be followed, or the alternative way of first gluing the foam rubber to the inner side of the shell.
  • the staple gun 58 would be brought to bear before the foam rubber 52 is brought into actual contact with the shell 50.
  • the staple gun 58 is, of course, used to drive the staples 56 into the groove 50) and thence into the framework 10. Then, the entire foam rubber fabric combination is glued to the shell.
  • the loose edge of the fabric 54 is tucked in under the shell 50, typically by means of a spatula 60 as shown in FIG. 9.
  • FIGS. 11 and 12 there is illustrated an alternative embodiment of a chair comprising a wooden framework and a plastic shell.
  • the same numerals as were used with the preferred embodiment refer to like parts in the alternative embodiment.
  • the essential difference from the preferred embodiment is that in this alternative embodiment the injection-molded plastic shell 50 is itself provided with the securing means.
  • the shell is formed with hollow lugs 50g spaced around its erimeter.
  • a continuous rib may be provided around all, or most, of the perimeter.
  • the plastic shell 50 is concave throughout most of its length except for the top section 500 of the chair back and the forward section 50d of the chair seat.
  • the concavity in the chair back and seat is much shallower, as can be seen by reference to FIG. 12 which best illustrates the central region of the shell 50, i.e. region 50a.
  • the shell 50 in this instance is secured to the chair framework 10 by fitting the lugs 50g into appropriately spaced holes 62 provided in the frame work 10.
  • the lugs 50g are, of course, glued into holes 62 for firm fastening of the shell 50 thereto.
  • ribs are used they would be glued in a slot provided in the framework.
  • FIG. 13 there is shown a completely distinct version of the chair of the present invention which utilizes the same principle heretofore described, i.e. of a minimum wood structure combined with a vacuumformed plastic shell.
  • the configuration for the framework is totally different and the vacuum-formed shell likewise has a totally different configuration so as to conform to the configuration of the framework.
  • the basic difference in the chair of FIG. 13 is that the side rails 19 formed by the horizontally-extending portion of the basic part 12b are at a higher level so as to constitute, in effect, arm rests.
  • the same function as before is served by the side rails 19, that is, they support the plastic shell 50.
  • the topmost portion 500 and the forwardmost portion 50d of the plastic shell have substantially the same shape as in the first embodiment.
  • the plastic shell 50 is generally more in the shape of a bucket whose portion forming the seat for the chair has sides 50j.
  • Outwardly extending flanges 50k are provided, and in their runs from the top of the chair back to the forwardmost portion of the chair seat they extend over the corresponding portions of the framework 10.
  • the flanges slope downwardly corresponding to the downward slope of the edge support 16 and then generally horizontally over the side rails 19, and then downwardly again at the legs 18.
  • the entire perimeter of shell 50 may be secured to the chair framework 10 and the essential advantages of structural rigidity with the free-standing appearance for the chair are again realized.
  • This alternative embodiment of FIG. 13, of course, has the additional advantage that it has ready-made application as an arm chair without the necessity of affixing additional elements to the basic framework, but of course, it does not have the flexibility of the preferred embodiment which can be readily applied in either mode that is, as either a side chair or arm chair.
  • a chair construction comprising a wooden framework having a pair of side sections, each section comprising first and second frame members, the first frame member completely defining a rear leg, the second member completely defining a front leg and a side rail, the first and second members being joined together so as to define a, back-supporting edge for said chair; a first bracing member connecting said side sections and joined thereto at the top of the chair back, another bracing member extending between said side sections so as to join the front legs; a unitary molded plastic shell defining the seat and back for the chair, said plastic shell being secured substantially along its entire perimeter to the framework; said first and second frame members being constituted of laminated wood stock, substantially all of whose layers have their grains running the entire length of each frame member.
  • a chair construction comprising a pair of wooden side sections, each side section being constituted by two frame members, the first frame member completely defining a rear leg, the other member completely defining a front leg and a side rail, the two members being joined together to define a back-supporting edge for said chair; a unitary molded plastic shell defining a seat and back for the chair, said shell being generally dish-shaped and having a marginal flange-like portion extending around the entire perimeter of said shell, said marginal portion including a groove for receiving means for securing said shell to the chair framework.
  • a method of attaching upholstery to a chair comprising a wooden framework and a unitary molded plastic shell defining the seat and back for the chair, comprising the steps of securing an upholstery pad to the inner side of said shell, said upholstery pad having a marginal portion extending around the perimeter of said shell and being adapted to cover a flange-like member, having a groove, defining the edge of said shell; bringing said plastic shell into contact-at its flange-like member with the chair framework; affixing securing means at spaced points along said groove into the chair framework; and covering the flange-like member with the marginal portion of said pad.
  • a method of attaching upholstery as defined in claim 29, comprising the further step of securing a layer of fabric to the outer side of said shell.

Landscapes

  • Special Chairs (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
US627529A 1967-03-31 1967-03-31 Furniture construction Expired - Lifetime US3450435A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62752967A 1967-03-31 1967-03-31

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US3450435A true US3450435A (en) 1969-06-17

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US627529A Expired - Lifetime US3450435A (en) 1967-03-31 1967-03-31 Furniture construction

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US (1) US3450435A (xx)
JP (1) JPS505112B1 (xx)
BE (1) BE712325A (xx)
DK (2) DK131173B (xx)
FI (1) FI48890C (xx)
GB (2) GB1177325A (xx)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3594038A (en) * 1968-11-29 1971-07-20 Fixtures Mfg Corp Chair and ganging connectors
US3874729A (en) * 1973-12-04 1975-04-01 American Seating Co Group lounge furniture
US4141588A (en) * 1978-05-15 1979-02-27 Anderson Paul R Rocking lounge chair
US4152023A (en) * 1974-04-22 1979-05-01 Steelcase Inc. Chairs and method for making same
EP0251354A2 (de) * 1986-07-01 1988-01-07 Kembo B.V. Stuhl oder Sessel
US5642919A (en) * 1992-12-04 1997-07-01 Castelli S.P.A. Modular unit and method for producing seats
WO2005112704A2 (en) * 2004-05-13 2005-12-01 Humanscale Corporation Mesh chair component
US20060103198A1 (en) * 2004-08-05 2006-05-18 Thomas Dettmann Music posture chairs
USD660056S1 (en) 2006-06-20 2012-05-22 Humanscale Corporation Chair
USD673401S1 (en) 2005-05-13 2013-01-01 Humanscale Corporation Chair support structure
US20160242547A1 (en) * 2013-10-21 2016-08-25 Ballistic Furniture Systems, Inc. Ballistic barrier furniture and office systems
USD771964S1 (en) * 2015-06-05 2016-11-22 Min Chen Chair
US9504326B1 (en) 2012-04-10 2016-11-29 Humanscale Corporation Reclining chair
USD1011112S1 (en) * 2022-11-04 2024-01-16 Zhejiang Haoguo Furniture Co., Ltd Armrest for chairs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212717B (en) * 1987-11-24 1991-05-15 Eurotek Office Furniture Limit Article of furniture

Citations (9)

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Publication number Priority date Publication date Assignee Title
GB667316A (en) * 1949-02-15 1952-02-27 Peter Hvidt An article of furniture
US2726713A (en) * 1951-03-17 1955-12-13 James O Turner Chair with flexible bottom and back
GB825376A (en) * 1956-05-01 1959-12-16 Price Brothers And Co Ltd Demountable furniture
US3152836A (en) * 1963-02-05 1964-10-13 Robert A Swan Chair construction
US3188663A (en) * 1962-11-13 1965-06-15 Conrad William Arthur Upholstery construction
US3300251A (en) * 1965-06-10 1967-01-24 Knoll Associates Upholstery cover-frame connection
US3318635A (en) * 1966-05-09 1967-05-09 American Seating Co Row seating
US3328084A (en) * 1965-08-11 1967-06-27 Roy L Whitener Chair and method for making same
GB1080366A (en) * 1963-04-30 1967-08-23 Humber Ltd Improvements in supporting means for seat squabs

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB667316A (en) * 1949-02-15 1952-02-27 Peter Hvidt An article of furniture
US2726713A (en) * 1951-03-17 1955-12-13 James O Turner Chair with flexible bottom and back
GB825376A (en) * 1956-05-01 1959-12-16 Price Brothers And Co Ltd Demountable furniture
US3188663A (en) * 1962-11-13 1965-06-15 Conrad William Arthur Upholstery construction
US3152836A (en) * 1963-02-05 1964-10-13 Robert A Swan Chair construction
GB1080366A (en) * 1963-04-30 1967-08-23 Humber Ltd Improvements in supporting means for seat squabs
US3300251A (en) * 1965-06-10 1967-01-24 Knoll Associates Upholstery cover-frame connection
US3328084A (en) * 1965-08-11 1967-06-27 Roy L Whitener Chair and method for making same
US3318635A (en) * 1966-05-09 1967-05-09 American Seating Co Row seating

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3594038A (en) * 1968-11-29 1971-07-20 Fixtures Mfg Corp Chair and ganging connectors
US3874729A (en) * 1973-12-04 1975-04-01 American Seating Co Group lounge furniture
US4152023A (en) * 1974-04-22 1979-05-01 Steelcase Inc. Chairs and method for making same
US4141588A (en) * 1978-05-15 1979-02-27 Anderson Paul R Rocking lounge chair
EP0251354A2 (de) * 1986-07-01 1988-01-07 Kembo B.V. Stuhl oder Sessel
EP0251354A3 (en) * 1986-07-01 1988-04-20 Kembo B.V. Chair or easy chair
US4799735A (en) * 1986-07-01 1989-01-24 Kembo B.V. Chair or armchair
US5642919A (en) * 1992-12-04 1997-07-01 Castelli S.P.A. Modular unit and method for producing seats
WO2005112704A3 (en) * 2004-05-13 2006-05-11 Humanscale Corp Mesh chair component
US20050264087A1 (en) * 2004-05-13 2005-12-01 Humanscale Corporation Mesh chair component
WO2005112704A2 (en) * 2004-05-13 2005-12-01 Humanscale Corporation Mesh chair component
US8240771B2 (en) 2004-05-13 2012-08-14 Humanscale Corporation Mesh chair component
US20060103198A1 (en) * 2004-08-05 2006-05-18 Thomas Dettmann Music posture chairs
US7275788B2 (en) * 2004-08-05 2007-10-02 Wenger Corporation Music posture chairs
USD673401S1 (en) 2005-05-13 2013-01-01 Humanscale Corporation Chair support structure
USD660056S1 (en) 2006-06-20 2012-05-22 Humanscale Corporation Chair
USD661135S1 (en) 2006-06-20 2012-06-05 Humanscale Corporation Pair of armrests for a chair or the like
US9504326B1 (en) 2012-04-10 2016-11-29 Humanscale Corporation Reclining chair
US20160242547A1 (en) * 2013-10-21 2016-08-25 Ballistic Furniture Systems, Inc. Ballistic barrier furniture and office systems
USD771964S1 (en) * 2015-06-05 2016-11-22 Min Chen Chair
USD1011112S1 (en) * 2022-11-04 2024-01-16 Zhejiang Haoguo Furniture Co., Ltd Armrest for chairs

Also Published As

Publication number Publication date
JPS505112B1 (xx) 1975-02-28
DK131658B (da) 1975-08-18
DK131173C (xx) 1975-11-10
BE712325A (xx) 1968-09-16
FI48890B (xx) 1974-10-31
DK131658C (da) 1976-03-22
DK131173B (da) 1975-06-09
GB1177324A (en) 1970-01-07
FI48890C (fi) 1975-02-10
GB1177325A (en) 1970-01-07

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