US3862454A - Divan having adjustable catenary and horizontal layout positions - Google Patents

Divan having adjustable catenary and horizontal layout positions Download PDF

Info

Publication number
US3862454A
US3862454A US385977A US38597773A US3862454A US 3862454 A US3862454 A US 3862454A US 385977 A US385977 A US 385977A US 38597773 A US38597773 A US 38597773A US 3862454 A US3862454 A US 3862454A
Authority
US
United States
Prior art keywords
cross member
pair
cross
members
plane
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
US385977A
Other languages
English (en)
Inventor
Vittorio Mazzucconi
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.)
ICF DE PADOVA Srl
Original Assignee
ICF DE PADOVA Srl
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 ICF DE PADOVA Srl filed Critical ICF DE PADOVA Srl
Application granted granted Critical
Publication of US3862454A publication Critical patent/US3862454A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
    • A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
    • A47C17/162—Seating furniture changeable to beds by tilting or pivoting the back-rest with adjustable back-rest
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
    • A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
    • A47C17/17—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat

Definitions

  • Patent 1 1
  • Inventor Vittorio Mazzucconi, Milan, Italy [73] Assignee: ICF De Padova S.r.1., Milan, Italy [22] Filed: Aug. 6, 1973 [21] Appl. No.: 385,977
  • the invention disclosed relates to a divan having a resting surface which may be adjusted between a catenary configurated position and a horizontal layout configurated position by simple manipulation of pivotal support members and relative movement of two longitudinally extending parallel members between which is disposed a flexible supporting surface.
  • This invention relates to a divan having adjustable catenary and horizontal layout positions. More particularly, the present invention provides a divan having pivotal bracket members which simply and efficiently adjust the rest or support surface between a catenary configurated position for seating use and a horizontal layout configurated position for bedding use. Thus, the present divan may be utilized either as a resting couch or as a bed as desired.
  • Divans or the like are well known in the art such as those wherein the inclination of the back rest can be adjusted to a horizontal position while keeping unchanged the relative position of the seat portion.
  • Such prior art divans have a number of disadvantages including the non-uniform distribution of the users weight in the seating position from both the resting surface in horizontal positions and the adjustable inclined back portion in upright position. An uncomfortable seating arrangement is thus presented by such divans.
  • greater firmness or support is received from the more sturdily constructed seat portion relative to the more simply constructed adjustable back rest portion, there again results non-uniform distribution of weight of the user in the bedding position with resulting loss of comfort.
  • the adjustable divan includes two longitudinally extending, parallel cross members between which is firmly secured a flexible supporting surface which may be formed of one or more lengths of canvas, bands, belts or the like, and which takes the shape of a catenary curve according to the position of the parallel cross members.
  • One of the parallel members may be moved pivotally from a horizontal plane, with the supporting surface stretched horizontally, to a plurality of elevated positions obtained by detaining one of the parallel cross members, while lifting the other cross member along a curved path.
  • a catenary shape is imparted to the supporting surface which becomes suitable for the use as a divan, with a more or less steeply inclined back as desired.
  • Both of the longitudinally extending, parallel cross members may be pivoted by the same, or different amounts, whereby different positions are available for the supporting surface.
  • One or both of the parallel members may be pivotally supported for movement along a required path which may be a portion of an arc of a circle.
  • the pivoted support may consist of brackets, leaf springs, props, stays, levers or the like.
  • the pivoted support is desirably configurated such that 5 it may be controlled at will by the user.
  • the divan includes two rigid oppositely disposed shoulder members joined by a longitudinally extending tubular shaped cross member. Recesses are provided at convenient locations on the shoulder members for receiving and securing two longitudinally extending, parallel cross members between which is disposed a flexible supporting surface. At least one of the longitudinally extending, parallel members is pivotally joined by 5 a pivoted support bracket to the tubular shaped cross member.
  • the flexible supporting surface is formed of a plurality of bands, belts or the like, having a length which is substantially equal to the distance, between the two parallel members when they are engaged with said recesses.
  • the rest surface for the user may be formed by members such as self-supporting cushions, coverings, paddings, mattresses or the like positioned on the flexible supporting surface.
  • a rear cross member supported by pivoted brackets extending from the central cross member, can be brought to most any station ary position within a limited curved arch having as its center the axis of said central cross member.
  • the limited arch starts from the point in which the rear cross parallel member is supported by the shoulder recesses to a near vertical position.
  • a self-locking mechanism may include a worm gear, or a clutch with front or peripheral claws or the like, adapted to angularly adjust the pivotal brackets to a required position, and to firmly retain the cross member at such position.
  • the linear shape of the flexible supporting member extending between outer parallel cross members is maintained unchanged in horizontal bedding position.
  • the different, more or less bent shapes of a catenary curve results in sitting position under no-load conditions, while under the weight of user, a shape results which corresponds to the distribution of load.
  • the forward cross member may be also supported by pivotal brackets such that the position thereof can be controlled from the central cross-member in similar fashion to the rear cross-member; thus, it is possible to occupy nearly all possible required positions across a semicircle shaped between the recesses of the shoulder members.
  • the divan may have a more or less high seat, or have a more or less inclined back, to that of a longitudinally extending bed, i.e., when both outer parallel cross-members are at the same level in the recesses of the shoulder member.
  • One or both of these parallel cross members may be higher than the lower ends of said recesses, and with the flexible supporting surface disposed therebetween.
  • the pivotal brackets by which one or both outer parallel cross-members are supported, may be rigid or resilient, according to the particular material of which they are made, or to their given shape.
  • FIG. 1 is a perspective view of a divan of the present invention without covering, cushions, lining or the like.
  • FIG. 2 is a partial horizontal section taken along sectional lines IIII of FIG. 1, showing the detail of a seating and control of the central cross-member, and of brackets fastened thereto.
  • FIG. 3 is a vertical section, taken along sectional lines of III-III of FIG. 2, showing internal elements of a trim adjusting device.
  • FIG. 4 is a side view showing the divan of FIG. 1 in inclined seating position.
  • FIG. 5 is a side view showing the divan of FIG. 1 in extended horizontal layout position for bedding use.
  • FIG. 6 is a side view illustrating an embodiment of the present invention in inclined seating position.
  • FIG. 7 is a side view of the embodiment of FIG. 6 in horizontal layout position for bedding usage.
  • the divan illustrated includes two elongated side shoulder members 1 and 2 having a small height as desired.
  • a longitudinally extending central cross-member 3 is firmly supported near the centers and between both side shoulders, thus being prevented from turning about its own axis.
  • Forward recesses 4 and 5, and rear recesses 6 and 7, having axes parallel to the axis of the central cross member 3, are disposed on the shoulder members for receiving and seating ends of fore cross member 8 and rear cross member 9.
  • Forward recesses 4 and 5 extend symmetrically, in respect of central cross member 3, to rear recesses 6 and 7.
  • the rear cross member 9 is supported by the pivotal brackets 10 and 11, which are arcuate and extend from the central cross member 3.
  • the brackets can be swung by a self-locking gear 12 which is designed to be driven by the user, either manually or by motor, through a handle 13.
  • the length of the flexible supporting surface is equal to the horizontal distance between the fore recesses 4 and 5 and the rear recesses 6 and 7. As shown in FIG.
  • brackets 10 and 11 are rotatably journaled on tubular shaft 15. Both ends of inner shaft 15 of cross member 3 are rigidly connected with bearing elements 311 which are secured to shoulder members 1 and 2 by crosswise extending plates 16 that are firmly engaged therewith.
  • an outer casing of mechanism 12 by which brackets 10 and 11 are driven is also fastened to inner shaft 15.
  • This mechanism may be of any conventional selflocking type and, as shown in the FIGS. 2 and 3, preferably has an outer casing made of two sections 12a and 12b.
  • Worm screw 17, driven by handle 13 is disposed in two-part casing 12 and is seated in bearings 17a and 17b.
  • Worm screw 17 is in mesh with worm gear 18 which is rigidly connected with the outer tubular shaft 19 extending in coaxially spaced relation to the inner shaft 15.
  • the outer tubular shaft 19 may be rotated about shaft 15 by operation of worm gear 17. 18 to pivot brackets 10 and 11 about shaft 15.
  • the worm wheel 18 is revolvingly supported by the inner stationary shaft 15 by which all loads weighing on rear cross members 9 are likewise supported.
  • FIGS. 4 and 5 a side view of the divan of FIG. 1 is presented, complete with cushions or paddings 20 or the like, while in FIGS. 6 and 7 show an embodiment of the divan of FIG. 1, wherein the forward cross member 8 is supported in like fashion as the rear cross member 10 and 11 by brackets 10a and Ila. fitted in a similar manner to cross member 3.
  • the pivotal members may be moved by either one or two mechanisms 12 and handle 13, to obtain either a simultaneous or independent pivotal motion of the brackets by which the parallel cross members 8 and 9 are supported.
  • the two shoulder members 1 and 2 resting on a floor, are kept spaced from each other by the central cross member 3 which is secured to the shoulder members by crosswise extending plates 16 that can be positioned into the shoulders by an amount sufficient to take up the torque pressure exerted onto the cross member 3 by the rear member 9 and the brackets 10 and 11, when the divan is utilized as a seat.
  • the cross member 3 consists of a central shaft 15, whose ends 3a are secured to shoulder members I and 2, and by which the vertical load weighing upon the rear cross member 9 is taken up.
  • FIGS. 6 and 7 respectively show the divan in a to seating position and in use as a bed.
  • the forward cross member 8 is also supported by pivotal brackets 10a-l la, similar to those by which the cross member 9 is supported, and which may be turned by drives similar to those previously described, or by equivalent means.
  • the forward member 8 may be positioned at a higher level, or alternately to bring both members 8 and 9 to the same level in order to obtain a resting couch with a greater amount of sag, the latter being shown by dash lines in the FIG. 7.
  • Brackets 10 and 11 and 10a and 11a may be made of a resilient material such as metal leaf springs, and by a suitable selection of materials and of spring shapes, slight translatory motions can be performed by the outer cross members. Also, the brackets may be formed of other materials such as plastic, wood or the like as desired. Other types of drives may be utilized in place of those previously described, or no drives need be used.
  • An adjustable divan comprising 1. a pair of horizontally extending, substantially parallel cross members defining a first plane,
  • the third cross member extending in another plane lower than the first plane when the latter is horizontal
  • bracket means pivotally mounting one cross member of the pair on the third cross member for positioning the one cross member at a continuous succession of levels between a first postiion characterized by the first plane defined bythe pair of cross members extends substantially horizontally to continuously successive positions wherein the one cross member is elevated to successively higher levels above the horizontal plane,
  • the flexible support surface having a length permitting it to be stretched between the pair of cross members in the first position thereof to form a bed and b. the flexible support surface defining a catenary curve in the continuously successive positions to form a combined unitary seat and back rest.
  • the flexible supporting surface comprises a plurality of parallel bands having respective ends affixed to the pair of cross members.
  • the adjustable divan of claim 1 further comprising means on the third cross member for pivoting the bracket means into the first and successive positions and for locking the bracket means in each of the positions.
  • the adjustable divan of claim 1 further comprising a pair of shoulder members extending in planes substantially perpendicular to the cross members, the third cross member being affixed to the shoulder members, and the shoulder members defining recessed seats arranged to receive the ends of the pair of cross members for support thereof.
  • the adjustable divan of claim 1 further comprising a second bracket means pivotally mounting the other cross member of the pair on the third cross member for positioning the other cross member at a continuous succession of levels between a first position wherein the plane defined by the pair of cross members extends substantially horizontally to continuously successive positions wherein the other cross member is elevated to successively higher levels above the horizontal plane.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
US385977A 1972-08-26 1973-08-06 Divan having adjustable catenary and horizontal layout positions Expired - Lifetime US3862454A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT28549/72A IT964304B (it) 1972-08-26 1972-08-26 Divano con superficie a catenaria con assetto variabile fino alla disposizione orizzontale

Publications (1)

Publication Number Publication Date
US3862454A true US3862454A (en) 1975-01-28

Family

ID=11223771

Family Applications (1)

Application Number Title Priority Date Filing Date
US385977A Expired - Lifetime US3862454A (en) 1972-08-26 1973-08-06 Divan having adjustable catenary and horizontal layout positions

Country Status (3)

Country Link
US (1) US3862454A (enrdf_load_stackoverflow)
JP (1) JPS4987473A (enrdf_load_stackoverflow)
IT (1) IT964304B (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225988A (en) * 1979-01-30 1980-10-07 Cary George R Ortho-turn bed
US6230342B1 (en) * 1996-02-26 2001-05-15 Audun Haugs Method and apparatus for handling of a person in a rocking movement in relation to a bed
US6651281B1 (en) * 1999-05-04 2003-11-25 Donjac Pty. Ltd. Support assembly means
US20070067908A1 (en) * 2004-05-07 2007-03-29 Gudipati Ramachandra R Support for baby
US20080216240A1 (en) * 2004-02-25 2008-09-11 Alberto Valli Bed
US20150020312A1 (en) * 2013-07-17 2015-01-22 Hans D. Baumann Cradle type hospital bed
US20190175428A1 (en) * 2017-12-13 2019-06-13 Vandette B. Carter Bed bound patient turning device
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
US20230190255A1 (en) * 2021-12-22 2023-06-22 Globus Medical, Inc. Patient positioner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5417446Y2 (enrdf_load_stackoverflow) * 1975-06-04 1979-07-05

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2000624A (en) * 1932-10-25 1935-05-07 Harry G Traver Chair
US2769987A (en) * 1955-10-28 1956-11-13 Harry A Thal Sofa bed
US3013281A (en) * 1959-04-23 1961-12-19 Jesse E Steiner Invalid bed
US3458877A (en) * 1967-09-29 1969-08-05 John Edwards Sofa bed combination
US3565482A (en) * 1968-06-24 1971-02-23 Leif Blodee Adjustable contour chair
US3695685A (en) * 1969-10-17 1972-10-03 Thomas L Lamb Longue chair

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2000624A (en) * 1932-10-25 1935-05-07 Harry G Traver Chair
US2769987A (en) * 1955-10-28 1956-11-13 Harry A Thal Sofa bed
US3013281A (en) * 1959-04-23 1961-12-19 Jesse E Steiner Invalid bed
US3458877A (en) * 1967-09-29 1969-08-05 John Edwards Sofa bed combination
US3565482A (en) * 1968-06-24 1971-02-23 Leif Blodee Adjustable contour chair
US3695685A (en) * 1969-10-17 1972-10-03 Thomas L Lamb Longue chair

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225988A (en) * 1979-01-30 1980-10-07 Cary George R Ortho-turn bed
US6230342B1 (en) * 1996-02-26 2001-05-15 Audun Haugs Method and apparatus for handling of a person in a rocking movement in relation to a bed
US6651281B1 (en) * 1999-05-04 2003-11-25 Donjac Pty. Ltd. Support assembly means
US20080216240A1 (en) * 2004-02-25 2008-09-11 Alberto Valli Bed
US20070067908A1 (en) * 2004-05-07 2007-03-29 Gudipati Ramachandra R Support for baby
US7694362B2 (en) * 2004-05-07 2010-04-13 Ramachandra Rao Gudipati Support for baby
US20150020312A1 (en) * 2013-07-17 2015-01-22 Hans D. Baumann Cradle type hospital bed
US11324325B2 (en) 2015-04-13 2022-05-10 Steelcase Inc. Seating arrangement
US11963621B2 (en) 2015-04-13 2024-04-23 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
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11116679B2 (en) * 2017-12-13 2021-09-14 Vandette B. Carter Bed bound patient turning device
US20190175428A1 (en) * 2017-12-13 2019-06-13 Vandette B. Carter Bed bound patient turning device
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
US12226025B2 (en) 2019-02-21 2025-02-18 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
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
US12161232B2 (en) 2019-12-13 2024-12-10 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US20230190255A1 (en) * 2021-12-22 2023-06-22 Globus Medical, Inc. Patient positioner

Also Published As

Publication number Publication date
IT964304B (it) 1974-01-21
JPS4987473A (enrdf_load_stackoverflow) 1974-08-21

Similar Documents

Publication Publication Date Title
US3862454A (en) Divan having adjustable catenary and horizontal layout positions
US4380352A (en) Reclining chair
BE1009587A3 (nl) Zit- of ligmeubel met golvend latten- of cellenwerk voorzien van een ophangsysteem.
US4790599A (en) Pivoting recliner apparatus and method
US5156441A (en) Chaise lounge reclining chair with an intermediate leg support member
US4049315A (en) Chair having independent seat and back
US2558171A (en) Reclining chair
US7195583B2 (en) Posture and exercise seating
RU2540392C2 (ru) Конструкция сиденья
US5067187A (en) Sofa bed with pivotable and slidably adjustable back rest
AU674736B2 (en) Recliner
US4078841A (en) TV chair with double pillow case and two-step ottoman
US3744846A (en) Seating construction
US2452405A (en) Chaise longue
US2540823A (en) Automatically adjustable chair or the like
US3332718A (en) Swinging chair
US5913770A (en) Folding sofa-bed frame
US4005903A (en) Seat with an adjustable back
US3455604A (en) Article of furniture such as a chair
EP0443002A4 (en) Improved adjustable seating assembly
CN207306449U (zh) 具有腰部刺激装置的椅子
US4124252A (en) Back support with controllable firmness
US3872523A (en) Sofa bed
KR102058559B1 (ko) 리클라이닝 소파
KR102675183B1 (ko) 리클라이너 소파