US3711156A - Support systems for the seated human body - Google Patents

Support systems for the seated human body Download PDF

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Publication number
US3711156A
US3711156A US00133603A US3711156DA US3711156A US 3711156 A US3711156 A US 3711156A US 00133603 A US00133603 A US 00133603A US 3711156D A US3711156D A US 3711156DA US 3711156 A US3711156 A US 3711156A
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US
United States
Prior art keywords
length
support system
support
supporting frame
human body
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Expired - Lifetime
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US00133603A
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English (en)
Inventor
J Bloomfield
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British Railways Board
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British Railways Board
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Publication date
Application filed by British Railways Board filed Critical British Railways Board
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Publication of US3711156A publication Critical patent/US3711156A/en
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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
    • A47C7/28—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
    • 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

Definitions

  • ABSTRACT A support system for the seated human body comprising a length or lengths of net material constrained under tension in a supporting frame to form a seat portion and a back support portion.
  • the net material forming the back support is attached to the supporting frame to provide a transversely extending forwardly projecting support portion for the upper pelvic/lumbar area and sweeps downwardly and rearwardly from this support portion to a position out of contact with the human body and upwardly and rearwardly from the support portion to form the remainder of the back support.
  • the side edges of the net material are not attached to the supporting frame over the downwardly and upwardly sweeping portions and tension is applied longitudinally to the net material over the back support through members of the supporting frame.
  • the basic form of support described in the aforesaid application comprises a non-elastic flexible web material constrained under tension by a supporting frame to define a three-dimensional support form including in an upwardly extending length of said material constituting a back support for the seated human body a transversely extending forwardly projecting support portion for the upper pelvic/lumbar area of the human body, the material sweeping downwardly and rearwardly from said support portion to a lower end which will not contact the seated human body and sweeping upwardly and rearwardly from said support portion to form the remainder of the back support.
  • a support system of the above described kind wherein the side edges of the upwardly extending length of material are each attached to said supporting frame to cause the material to'define said transversely extending forwardly projecting support portion, and are unconstrainedby the supporting frame over the upwardly and rearwardly and downwardly and rearwardly sweeping portions, and tension in the upwardly extending length of material is applied longitudinally of said length of material by attachment of the upper end of said length of material to said supporting frame and by a lower transverse frame member of the supporting frame engaging said length of material in the region of its lower end and at a position at which it will not contact the seated human body.
  • said lower frame member When a single length of material is used to form the back support and the seat portion, said lower frame member may be used to tension both the upwardly extending length and the seat-portion. When a separate length is used for the seat portion this will have its own rear tensioningfframe member.
  • FIG. 1 shows in side view the basic form of the sup port system using a single length of netting
  • FIG. 2 is a similar view showing the basic form of support system where separate lengths of netting are used for the seat portion and the upwardly extending back support portion,
  • FIG. 3 is a perspective view showing a seat construction embodying the basic form of support system of FIG. 1,
  • FIG. 4 is a diagrammatic side view showing a second seat construction embodying the basic form of support system of FIG. 1,
  • FIG. 5 is a diagrammatic side view showing a seat construction embodying the basic form of support system of FIG. 2, g 1
  • FIG. 6 illustrates a modification of the FIG. 5 construction
  • FIG. 7 is a view showing a reclining seat construction embodying the basic form of support system of FIG. 2.
  • the single length of netting l which is constrained by a supporting frame to define seat portion 2 and upwardly extending back support portion 3, is provided with pockets 4 and 5 which locate over side frames of the support system. If necessary for tensioning purposes the netting can be anchored to cross-members 6 and 7 at front and upper end edges.
  • the length of netting l is attached along each of its side edges over the region 8 to side frame portions.
  • a lower frame member in the form of a tensioning bar 9 engages within the acute angled apex formed in the netting at the junction between the seat portion 2 and the upwardly extending portion 3.
  • FIG. 2 where the same reference numerals'have been used as in FIG. 1 to indicate corresponding parts, an arrangement is shown similar to that of FIG. 1 except that the separate lengths of nettingdefining the seat portion 2 and upwardly extending back support portion 3 are tensioned by respective tensioning bars 10 and 1 1.
  • FIG. 3 In- FIG. 3 is shown one seat construction embodying the basic form of support system of FIG. 1.
  • a tubular metal framework forms floor-standing side frames 13 and 14 'which are shaped to receive the pockets 4 and 5 to form head rest 35 and a rounded front edge 36 to the seat portion-2.
  • the cross-member 6 is acurved bar which assists in shaping the upwardly extending portion 3 of the netting. Bracing is provided by cross-members 15, 16 and 17.
  • the frame member 18 is pivotable on axis 19 to the sideframes Band 14, to enable the tensioning bar to be forced against the net 1 to tension it.
  • the frame member 18 is locked to the side frames 13 and 14.
  • This locking has not been shown in FIG. 1 but could be effected in several ways.
  • the tensioning bar 9 could be arranged to spring behind the side frames 13 and 14.
  • a locking arrangement such as a screw-threaded arrangement could be provided which permits the adjustment of the tensioning bar 9 to take up any stretching of the netting caused by wear.
  • the net support in the regions 8 could, as shown in FIG. 4, be provided by forwardly projecting U shaped frame members 19 fixed j on the side frames 13 and 14 and the tensioning bar 9 could then form part of a separate frame 20 pivoted on axis 21 to the side frames 13 and 14.
  • the side frames are shown mounted on a base 23 with legs 24 so that seats may be used singly or assembled in rows on a common base 23.
  • FIG. 5 To achieve the basic form of support system shown in FIG. 2, the arrangement of FIG. 5 can be used. This is similar to the arrangement of FIG. 4 in having frame members 19 and pivoted frame 20. In the arrangement of FIG. 5, however, the frame20 provides the tensioningbar 10 for the length of netting forming seat portion 2. The tensioning bar ll forms part of frame 25 pivoted at 26 to side frames 13 and 14.
  • hems can be formed in the ends of the lengths of netting 2 and 3 for receiving the tensioning bars and 11. Net stretch in both the lengths 2 and 3 can be taken up by removing the tensioning bars 10 and l 1 and placing them in other preformed hems which effectively shorten the lengths 2 and 3 in their untensioned state.
  • the lengths of netting 2 and 3 could be welded to the tensioning bars 10 and 11 and net stretch taken up by winding the netting around the bars 10 and 11.
  • the arrangement of FIG. 6 can be used, where the length of netting is attached to crossbar 27 and the tensioning bar 11 of frame 25 presses against the netting to impart the tension into it.
  • tensioning bars 9, 10 and 1 1 can be mounted in the side frames 13 and 14 for rotation about their longitudinal axes and the netting simplywound around these tensioning bars to impart the described tension to the netting.
  • FIG. 7 shows the basic form of support system of FIG. 2 embodied in a reclining seat construction.
  • the same reference numerals as in the previous Figures have been used to indicate corresponding parts.
  • the seat comprises two side arms 28, which support in fixed manner side frames 29 for supporting and locating the length of netting forming the seat 2.
  • Pivotally mounted in side arms 28 are side frames 30 which support and locate the netting forming upwardly extending support portion 2.
  • the side frames 30 are pivotable about axis 31 which passes through the hip joint of the average person seated in the seat so that the seat is adjustable between the upright position shown in full line and the recline position shown in chain-dotted line. By pivoting at the hip joint the supporting characteristics of the seat are not substantially altered.
  • a support system for the seated human body comprising: a supporting frame; a non-elastic flexible 'web material constrained under tension in the supporting frame to define a three-dimensional support form including, in an upwardly extending lengthof said material constituting a back support for the seated human body, a transversely extending forwardly projecting support portion for the upper pelvic/lumbar area of the seated human body; the material which forms said back unconstrained by the supporting frame over both the upward] and rearwardly and also the downwardly and rearwar ly sweeping portions; and means for tensioning said upwardly extending length of material longitudinally of its length of material by attachment of the upper end of said length of material to said supporting frame and by a lower transverse frame member of the supporting frame engaging said. length of material in the region of its lower end and at a position at which it will not contact the seated human body.
  • a support system as I 8 A support system as claimed in claim 7, wherein said lower-frame member is formed integrally with side frame portions, to which the side edges of the upwardly extending length of material are attached to define said transversely extending forwardly projecting support portion, so that it is pivotable with said side frame portions.
  • the rear frame member comprises a bar rotatable about its longitudinal axis to wind the material'of the seat portion on to it.
  • a support system as claimed in claim 3, wherein the supporting frame comprises a first part supporting the material of the seat portion and a second part pivotable about the first part, substantially on the axis A of the hip joints of the seated human body, whereby the upwardly extending length of material can be adjusted to a recline" position.

Landscapes

  • Seats For Vehicles (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
US00133603A 1970-04-22 1971-04-13 Support systems for the seated human body Expired - Lifetime US3711156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB09285/70A GB1284650A (en) 1970-04-22 1970-04-22 Improvements relating to support systems for the seated human body

Publications (1)

Publication Number Publication Date
US3711156A true US3711156A (en) 1973-01-16

Family

ID=10126865

Family Applications (1)

Application Number Title Priority Date Filing Date
US00133603A Expired - Lifetime US3711156A (en) 1970-04-22 1971-04-13 Support systems for the seated human body

Country Status (13)

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US (1) US3711156A (cs)
AT (1) AT315905B (cs)
BE (1) BE766120R (cs)
CA (1) CA939083A (cs)
CH (1) CH536092A (cs)
DE (1) DE2119227C3 (cs)
ES (1) ES180215Y (cs)
FR (1) FR2092071B2 (cs)
GB (1) GB1284650A (cs)
IL (1) IL36672A (cs)
IT (1) IT976363B (cs)
NL (1) NL7105280A (cs)
SE (1) SE377882B (cs)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188063A (en) * 1978-11-09 1980-02-12 Dusart Etienne R Hammock chair with back supporting means
EP1053908A1 (en) * 1999-05-18 2000-11-22 Delta Tooling Co., Ltd. Seat
US6572190B2 (en) 2001-06-15 2003-06-03 Hon Technology Inc. Lumbar support for a chair
US20030189367A1 (en) * 2002-04-07 2003-10-09 Christian Erker Bucket seat with inclination-profile adjusting mechanism
US20050107243A1 (en) * 2001-08-22 2005-05-19 Fritz Kilthau Dessicant based on clay-bound zeolite process for its preparation and its use
US20060071523A1 (en) * 1992-06-15 2006-04-06 Stumpf William E Office chair
US20100237680A1 (en) * 2009-03-03 2010-09-23 William Pedersen Loop chair
US20110006582A1 (en) * 2008-03-05 2011-01-13 Tamarack Habilitation Technologies, Inc. Seat cushion
WO2011006060A1 (en) * 2009-07-09 2011-01-13 Strongback, LLC Collapsible chair with collapsible back support
US20110006564A1 (en) * 2009-07-09 2011-01-13 Laurence Lougee Collapsible chair with curved back support
US20120153700A1 (en) * 2010-12-17 2012-06-21 Vs Vereinigte Spezialmobelfabriken Gmbh & Co. Kg Seating furniture with independently free-swinging seat and backrest
WO2012084254A1 (en) * 2010-12-23 2012-06-28 Airbus Operations Gmbh Device for lying or sitting on
US11096497B2 (en) 2015-04-13 2021-08-24 Steelcase Inc. Seating arrangement
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11324325B2 (en) 2015-04-13 2022-05-10 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
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2536974A1 (fr) * 1982-12-02 1984-06-08 Navarro Roger Chaise longue elevatrice repliable
FI963575A0 (fi) * 1996-09-11 1996-09-11 Matti Elias Ingemar Panelius Sitskonstruktion

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2120183A (en) * 1937-03-29 1938-06-07 Philadelphia Sereen Mfg Compan Folding chair
US2702586A (en) * 1951-06-01 1955-02-22 Robert R Borgfeldt Body-supporting device
US2783825A (en) * 1955-10-14 1957-03-05 Gold Medal Folding Furniture C Folding chair
US2835311A (en) * 1957-05-16 1958-05-20 James M Reeves Combined back and head rests
US2964097A (en) * 1958-09-29 1960-12-13 Arvin Ind Inc Crank-rod for an article of foldable furniture
US3011826A (en) * 1960-01-06 1961-12-05 John I R Bowring Lightweight crew seat for high performance flight vehicles
US3248150A (en) * 1965-02-10 1966-04-26 Lilienfeld Beatrice Chair construction
US3538522A (en) * 1968-06-19 1970-11-10 B J Ball Ltd Bed support

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2120183A (en) * 1937-03-29 1938-06-07 Philadelphia Sereen Mfg Compan Folding chair
US2702586A (en) * 1951-06-01 1955-02-22 Robert R Borgfeldt Body-supporting device
US2783825A (en) * 1955-10-14 1957-03-05 Gold Medal Folding Furniture C Folding chair
US2835311A (en) * 1957-05-16 1958-05-20 James M Reeves Combined back and head rests
US2964097A (en) * 1958-09-29 1960-12-13 Arvin Ind Inc Crank-rod for an article of foldable furniture
US3011826A (en) * 1960-01-06 1961-12-05 John I R Bowring Lightweight crew seat for high performance flight vehicles
US3248150A (en) * 1965-02-10 1966-04-26 Lilienfeld Beatrice Chair construction
US3538522A (en) * 1968-06-19 1970-11-10 B J Ball Ltd Bed support

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188063A (en) * 1978-11-09 1980-02-12 Dusart Etienne R Hammock chair with back supporting means
US20060071523A1 (en) * 1992-06-15 2006-04-06 Stumpf William E Office chair
US7594700B2 (en) 1992-06-15 2009-09-29 Herman Miller, Inc. Contoured seating structure
EP1053908A1 (en) * 1999-05-18 2000-11-22 Delta Tooling Co., Ltd. Seat
US6572190B2 (en) 2001-06-15 2003-06-03 Hon Technology Inc. Lumbar support for a chair
US6729691B2 (en) 2001-06-15 2004-05-04 Hon Technology, Inc. Chair back construction
US20050107243A1 (en) * 2001-08-22 2005-05-19 Fritz Kilthau Dessicant based on clay-bound zeolite process for its preparation and its use
US20030189367A1 (en) * 2002-04-07 2003-10-09 Christian Erker Bucket seat with inclination-profile adjusting mechanism
US7118176B2 (en) * 2002-04-07 2006-10-10 Christian Erker Bucket seat with inclination-profile adjusting mechanism
US8177302B2 (en) * 2008-03-05 2012-05-15 Tamarack Habilitation Technologies Seat cushion
US20110006582A1 (en) * 2008-03-05 2011-01-13 Tamarack Habilitation Technologies, Inc. Seat cushion
US20100237680A1 (en) * 2009-03-03 2010-09-23 William Pedersen Loop chair
US8511747B2 (en) 2009-07-09 2013-08-20 Strongback, LLC Collapsible chair with collapsible back support
US20110006564A1 (en) * 2009-07-09 2011-01-13 Laurence Lougee Collapsible chair with curved back support
US8100469B2 (en) 2009-07-09 2012-01-24 Strongback, LLC Collapsible chair with curved back support
US20110006565A1 (en) * 2009-07-09 2011-01-13 Strongback, LLC Collapsible Chair with Collapsible Back Support
WO2011006060A1 (en) * 2009-07-09 2011-01-13 Strongback, LLC Collapsible chair with collapsible back support
US9622582B2 (en) 2009-07-09 2017-04-18 Strongback, LLC Collapsible chair with collapsible back support
US20120153700A1 (en) * 2010-12-17 2012-06-21 Vs Vereinigte Spezialmobelfabriken Gmbh & Co. Kg Seating furniture with independently free-swinging seat and backrest
US9055817B2 (en) * 2010-12-17 2015-06-16 Vs Vereinigte Spezialmobelfabriken Gmbh & Co. Kg Seating furniture with independently free-swinging seat and backrest
WO2012084254A1 (en) * 2010-12-23 2012-06-28 Airbus Operations Gmbh Device for lying or sitting on
US9085366B2 (en) 2010-12-23 2015-07-21 Airbus Operations Gmbh Device for lying or sitting on
US11324325B2 (en) 2015-04-13 2022-05-10 Steelcase Inc. Seating arrangement
US11963621B2 (en) 2015-04-13 2024-04-23 Steelcase Inc. Seating arrangement
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11096497B2 (en) 2015-04-13 2021-08-24 Steelcase Inc. Seating arrangement
US11553797B2 (en) 2015-04-13 2023-01-17 Steelcase Inc. Seating arrangement
US12075921B2 (en) 2019-01-17 2024-09-03 Hni Technologies Inc. Chairs including flexible frames
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames
US11910934B2 (en) 2019-02-21 2024-02-27 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
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
US12226025B2 (en) 2019-02-21 2025-02-18 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
US12161232B2 (en) 2019-12-13 2024-12-10 Steelcase Inc. Body support assembly and methods for the use and assembly thereof

Also Published As

Publication number Publication date
DE2119227B2 (cs) 1974-10-24
ES180215U (es) 1973-02-01
NL7105280A (cs) 1971-10-26
AT315905B (de) 1974-06-25
ES180215Y (es) 1973-11-16
FR2092071B2 (cs) 1973-06-08
FR2092071A2 (cs) 1972-01-21
DE2119227A1 (de) 1971-11-11
SE377882B (cs) 1975-08-04
IL36672A (en) 1974-07-31
GB1284650A (en) 1972-08-09
CA939083A (en) 1973-12-25
CH536092A (fr) 1973-04-30
IT976363B (it) 1974-08-20
DE2119227C3 (de) 1975-06-26
BE766120R (fr) 1971-09-16
IL36672A0 (en) 1971-06-23

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