US3705744A - Three position folding seat - Google Patents

Three position folding seat Download PDF

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Publication number
US3705744A
US3705744A US26314A US3705744DA US3705744A US 3705744 A US3705744 A US 3705744A US 26314 A US26314 A US 26314A US 3705744D A US3705744D A US 3705744DA US 3705744 A US3705744 A US 3705744A
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US
United States
Prior art keywords
seat
frame
inner frame
chair
outer frame
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
US26314A
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English (en)
Inventor
Giancarlo Piretti
Leonida Castelli
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Castelli SpA
Original Assignee
Castelli SpA
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 Castelli SpA filed Critical Castelli SpA
Application granted granted Critical
Publication of US3705744A publication Critical patent/US3705744A/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
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/04—Folding chairs with inflexible seats
    • A47C4/08—Folding chairs with inflexible seats having a frame made of wood or plastics
    • A47C4/10—Folding chairs with inflexible seats having a frame made of wood or plastics with legs pivotably connected to seat or underframe
    • A47C4/14—Folding chairs with inflexible seats having a frame made of wood or plastics with legs pivotably connected to seat or underframe with cross legs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/04—Folding chairs with inflexible seats
    • A47C4/18—Folding chairs with inflexible seats having a frame made of metal
    • A47C4/20—Folding chairs with inflexible seats having a frame made of metal with legs pivotably connected to seat or underframe
    • A47C4/24—Folding chairs with inflexible seats having a frame made of metal with legs pivotably connected to seat or underframe with cross legs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C5/00—Chairs of special materials
    • A47C5/04—Metal chairs, e.g. tubular
    • A47C5/10—Tubular chairs of foldable, collapsible, or dismountable type

Definitions

  • a folding chair has a rectangular outer frame in which [21] Appl' 26314 a U-shaped inner frame is received. A flat seat is received within the inner frame with the seat and two [30] Foreign Application Priority Data frames all relatively pivotal about a common axis. Sept 20 1969 Italy 40195 N69 Stops are provided at the axis to allow the seat to pivot relative to the inner frame from a position coplanar therewith to a position extending at an angle [52] US. Cl ..297/55, 297/335 thereto.
  • the ushaped inner frame can, in tum pivot [51] Int.
  • the present invention relates to a folding seat designed to take three pre-established positions.
  • This seat is substantially con-' stituted of a pair of frames having a substantially rectangular shape, one of which is wider than the other so that this latter may be located within the first one, and of a U-shaped frame, so proportioned that in the closed position of the seat said U-frame can enter between said greater and smaller rectangular frames.
  • the rectangular and U-shaped frames are articulated relative to each other by means of articulated joints, each connecting intermediate points of the longitudinal members of the rectangular frames and the end of one of the parallel legs of the U-shaped frame, which joints are each located to one of the sides of the seat.
  • the articulated joint comprises joint elements each respectively integral with one of said three frames, and comprising projecting parts in form of a sector of a circle which are designed to be received in annular guiding grooves provided in the facing surfaces of the adjacent joint elements.
  • the sector-like projecting parts each have an angular length less than that of the co-operat ing annular groove so as to allow the three frames to perform mutual rotary movements of pre-determined angles about a common pivot axis and to stop respectively in three pre-established positions of the seat.
  • FIG. 1 is a front view of the seat in its closed position
  • FIG. 2 is a perspective view of the seat in its open position
  • FIG. 3 is a side view of the seat in the intermediate position
  • FIG. 4 is an exploded perspective view of the joint elements integral with the side members of the three frames and which are parts of the articulated joint, the joint shown here being to the right side of the seat as viewed in FIG. 1;
  • FIG. 5 is an exploded perspective view, similar to that of FIG. 4; but showing the same joint elements as seen in the opposite direction;
  • FIG. 6 is a detail view, in enlarged scale, of the articulated joint shown in FIGS. 4 and 5, illustrated in an axial section and in the closed position of the seat.
  • the joint elements constituting the articulated joint on the left side of the seat will be of course symmetrically identical to those which form the articulated joint on the right side of the seat and which are shown in the FIGS. 4 to 6.
  • the portion of the frame'7 below the joints l0 and 10' is slightly longer than that which is above said joints, the frame 7 constituting with its horizontal transverse member the forward bearing means for the seat.
  • the upper portion of frame 7 carries the back 11, which may be shaped in any suitable manner, but it preferably occupies only the upper part of the space defined by the frame 7 in order not to hinder the backwards pivoting of the frame 8 carrying the sitting plane 8 as the seat is folded up into closed position and the frame 8 is positioned within frame 7.
  • the U-shaped frame 9 forms with the lower part of the frame 7 a unit which in side view looks like a compass, the angle between frames 7 and 9 being preferably 55.
  • the transverse member of the U-shaped frame 9 constitutes the rear bearing means for the seat, while as the seat is placed in its closed position (FIG. 1), the frame 9 is placed in the same plane as the frames 7 and 8, thereby lying inside the frame 7 and outside the frame 8.
  • the size of the angle formed between the U-shaped frame 9 and the rectangular frame 7 in the -open position of the seat, which has been hereabove asfore frame 8 will form in this case an angle with the frame 7 which is equal to that which is formed between the frame 9 and the lower part of the frame 7, namely in the illustrated embodiment an angle of 5 5.
  • the three positions of the seat which correspond to those which are illustrated in FIGS. 1 to 3 respectively, as well as the connection of the assembled parts is realized by the articulated joints 10, 10', pivotally arranged on a common axis and which are constituted by the joint elements 10a, 10b, 10c and la, l0b, c respectively, these latter being symmetrically identical and mounted on the other side of the seat with respect to the preceding ones.
  • the joint elements are respectively integral with the longitudinal members of the frames 7 and 8 and with the ends of the two parallel legs of the frame 9.
  • the joint 1(1) comprises in combination a joint element 10a integral with the frame 7, a joint element 10b integral with the frame 9, and a joint element 10c integral with the frame 8.
  • the element 100 has an outer surface 12 closed and flat as that of the outer side of the longitudinal member of the frame 7, while at the opposite side a recess 13 is arranged shaped as a semi-circular groove, the ends 14 of which are placed in a substantially diametral plane which is parallel to the plane of the frame 7.
  • the element 10a extends inwardly with a hollow shaft or bush 15 having an internally threaded bore, the axis of which constitutes the pivot axis of the seat, namely the pivot axis of the three frames 7, 8 and 9 relative to each other.
  • the joint element 10b is integral with the adjacent end of one of the two parallel legs of the U-frame 9 and is provided with an axial hole 16 of a diameter slightly larger than the outer diameter of the bush 15 which passes through it.
  • element 10b is provided with a projecting part 18, shaped as a sector of a cylindrical ring forming an angle of about 55, one of the radial end surfaces of which is marked 17 and is placed in a plane parallel to the plane of the frame 9, with which the element 10b is integral.
  • the annular projecting part 18 in the assembled position is received in the groove 13 so that, as the seat is pivoted into its closed position, the end surface 17 of projecting part 18 abuts against the ends surface 14 of the groove 13, in which the projecting part 18 can rotate through a pre-established angle, namely in the shown embodiment through an angle of 55, until the other end surface 19 abuts against that portion of the end surface 14 of the groove 13 which is positioned at the opposite side of the bush 15, so that the projecting part 18 and the groove 13 co-operating one with the other, define in combination the open position of the legs of the seat as well as their closed position, if either the surface 17 or 19 stops against the end surface 14 of the groove 13.
  • the element 10b is provided with a semi-circular groove 20 identical to the groove 13 and having the same orientation with respect to the longitudinal plane of the frame 9.
  • the groove 20 is designed to receive a projecting part 22 having the same form and disposition as the projecting part 18, so that the part can rotate through an angle of 55 with respect to the part 10b in one direction, until the radial end surface 23 stops against the surface 21 of the groove 20, while as the element 100 rotates in the opposite direction the end surface 24 will abut against the other part of the end surface 21, the radial end surfaces 23, 24 of the projecting part 22 thus defining the two end positions of the sitting plane 8, 8' with respect to the frame 9, namely the positions shown in FIGS. 2 and 3 respectively.
  • the joint element 100 is provided with a short axial hole 25 of a diameter equal to that of the hole 16 and designed to house the end of the bush 15.
  • the hole 25 opens into a wider hole 27, open at the outer side of the element 10c and provided to receive the head 28 of a screw 29 engaging with the inner threaded surface of the bush 15 in order to connect the parts forming the articulated joint 10.
  • the screw 28 and bush 15 in combination with the corresponding elements of the symmetrically positioned joint 10' perform the connection of the parts constituting the structure of the folding seat.
  • the confronting surfaces of the joint elements 10a, 10b, 100 of the articulated joint 10 are provided with annular facing shoulders 30 of equal diameter, which are designed to receive rings 31 made of plastics material and provided for the purpose of spacing apart the joint elements from each other so as to reduce the friction between the parts and to make easier the opening and closing of the seat.
  • a folding chair comprising:
  • pivot means defining a pivot axis passing through said outer frame intermediate said lower and upper ends, through said inner frame at said sides, and through said seat,said pivot means including first stop means at said axis between said outer frame and said inner frame for pivotal movement of said inner frame relative to said outer frame only between a first position parallel to said outer frame and a second position extending at an angle to said outer frame, and
  • second stop means at said axis between said inner frame and said seat' for pivotal movement of said seat relative to said inner frame and independent of the position of said inner frame relative to said outer frame only between a first position parallel to said inner frame and a second position extending at an angle to said inner frame.
  • said seat includes a seat frame, said stop means each including an axial projection on one of said frames and a recess on another of said frames receiving said projection.
  • said pivot means further includes a pair of bushes lying on said axis and each connected to one of said seats and outer frames.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Chairs Characterized By Structure (AREA)
  • Special Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
US26314A 1969-09-20 1970-04-07 Three position folding seat Expired - Lifetime US3705744A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA877743T
IT4019569 1969-09-20
AU38287/72A AU465033B2 (en) 1969-09-20 1972-01-25 Folding chair

Publications (1)

Publication Number Publication Date
US3705744A true US3705744A (en) 1972-12-12

Family

ID=42320552

Family Applications (1)

Application Number Title Priority Date Filing Date
US26314A Expired - Lifetime US3705744A (en) 1969-09-20 1970-04-07 Three position folding seat

Country Status (14)

Country Link
US (1) US3705744A (nl)
AT (1) AT296531B (nl)
AU (1) AU465033B2 (nl)
BE (1) BE746150A (nl)
CA (1) CA877743A (nl)
CH (1) CH509791A (nl)
DE (2) DE2006914C3 (nl)
DK (1) DK131016B (nl)
ES (1) ES157808Y (nl)
FR (1) FR2060488A5 (nl)
GB (1) GB1231769A (nl)
LU (1) LU60724A1 (nl)
NL (2) NL140721B (nl)
YU (1) YU32965B (nl)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982785A (en) * 1974-07-29 1976-09-28 Center For Design Research And Development Chair
US4441757A (en) * 1980-02-13 1984-04-10 Jesus Gasca Burges Structural joint for folding chair
US5064243A (en) * 1989-04-11 1991-11-12 Quain Kay D Apparatus and method for use in hospitals to promote patient-caregiver contact
US5524966A (en) * 1993-05-27 1996-06-11 Pro-Cord S.R.L. Folding chair with tilting backrest
EP1060695A2 (en) * 1999-06-18 2000-12-20 Center for design research and development N.V. Stackable chair
EP1300099A2 (en) * 2001-10-04 2003-04-09 Pro-Cord Spa A chair
US20040056522A1 (en) * 2002-09-20 2004-03-25 Hussey Seating Company Seating unit including modular stanchion
US20070200409A1 (en) * 2006-02-28 2007-08-30 Interkal, Llc Forward folding seat assembly
EP2143567A2 (fr) 2008-07-01 2010-01-13 Maped Instrument d'écriture à pointes multiples
ITVI20090187A1 (it) * 2009-07-23 2011-01-24 Antonio Mainardi Giunto di rotazione per sedie pieghevoli
EP3095354A1 (en) 2015-05-19 2016-11-23 Pro-Cord S.p.A. A folding chair
ITUB20159640A1 (it) * 2015-12-22 2017-06-22 Pro Cord Spa Sedia pieghevole
IT201700082714A1 (it) * 2017-07-20 2019-01-20 Pro Cord Spa Sedia pieghevole
FR3136946A1 (fr) 2022-06-24 2023-12-29 Patrick Herbault Chaise pliable à articulation double rotative à secteurs
FR3136947A1 (fr) 2022-06-13 2023-12-29 Patrick Herbault Chaise pliable à articulations simples et doubles
FR3137821A1 (fr) 2022-06-13 2024-01-19 Patrick Herbault Chaise pliable en deux mouvements

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431847A1 (fr) * 1978-07-24 1980-02-22 Berthier Marc Antoine Chaise pliante
DE2930140C2 (de) * 1979-07-25 1984-12-13 Ludwig Baden Roner Sitzmöbel
DE3437579A1 (de) * 1984-10-13 1986-04-17 Petz Freizeitmöbel GmbH, 8646 Nordhalben Zusammenklappbarer stuhl
GB8702082D0 (en) * 1987-01-30 1987-03-04 Coltran Products Ltd Clothes airer
GB2450320A (en) * 2007-06-18 2008-12-24 Mbb Connections Ltd Hinge assembly movement limiting member and coaxial hinge members
DE102015122062A1 (de) * 2015-12-17 2017-06-22 Eduard Dortmann Mehrzweckmöbel
CN105595661B (zh) * 2016-03-21 2018-11-27 太仓市车中宝休闲用品有限公司 新型折叠座椅
CN112535371A (zh) * 2020-09-29 2021-03-23 厦门新技术集成有限公司 塑钢椅

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US63792A (en) * 1867-04-16 morse
US69850A (en) * 1867-10-15 George sherwood
US272166A (en) * 1883-02-13 sheplbe
US1815643A (en) * 1928-06-07 1931-07-21 Cletus N Allerding Folding chair
US1838213A (en) * 1924-10-25 1931-12-29 Floyd J Buffington Folding chair

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US63792A (en) * 1867-04-16 morse
US69850A (en) * 1867-10-15 George sherwood
US272166A (en) * 1883-02-13 sheplbe
US1838213A (en) * 1924-10-25 1931-12-29 Floyd J Buffington Folding chair
US1815643A (en) * 1928-06-07 1931-07-21 Cletus N Allerding Folding chair

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982785A (en) * 1974-07-29 1976-09-28 Center For Design Research And Development Chair
US4441757A (en) * 1980-02-13 1984-04-10 Jesus Gasca Burges Structural joint for folding chair
US5064243A (en) * 1989-04-11 1991-11-12 Quain Kay D Apparatus and method for use in hospitals to promote patient-caregiver contact
US5524966A (en) * 1993-05-27 1996-06-11 Pro-Cord S.R.L. Folding chair with tilting backrest
EP1060695A2 (en) * 1999-06-18 2000-12-20 Center for design research and development N.V. Stackable chair
EP1060695A3 (en) * 1999-06-18 2001-04-25 Center for design research and development N.V. Stackable chair
US6481789B1 (en) 1999-06-18 2002-11-19 Center For Design Research And Development N.V. Stackable chair
EP1300099A2 (en) * 2001-10-04 2003-04-09 Pro-Cord Spa A chair
EP1300099A3 (en) * 2001-10-04 2003-05-14 Pro-Cord Spa A chair
US20040056522A1 (en) * 2002-09-20 2004-03-25 Hussey Seating Company Seating unit including modular stanchion
US20070200409A1 (en) * 2006-02-28 2007-08-30 Interkal, Llc Forward folding seat assembly
EP2143567A2 (fr) 2008-07-01 2010-01-13 Maped Instrument d'écriture à pointes multiples
ITVI20090187A1 (it) * 2009-07-23 2011-01-24 Antonio Mainardi Giunto di rotazione per sedie pieghevoli
EP3095354A1 (en) 2015-05-19 2016-11-23 Pro-Cord S.p.A. A folding chair
US9913537B2 (en) 2015-05-19 2018-03-13 Pro-Cord S.P.A. Folding chair
ITUB20159640A1 (it) * 2015-12-22 2017-06-22 Pro Cord Spa Sedia pieghevole
EP3189751A1 (en) 2015-12-22 2017-07-12 Pro-Cord S.p.A. A folding chair
US10064491B2 (en) 2015-12-22 2018-09-04 Pro-Cord S.P.A. Folding chair
IT201700082714A1 (it) * 2017-07-20 2019-01-20 Pro Cord Spa Sedia pieghevole
EP3430947A1 (en) * 2017-07-20 2019-01-23 Pro-Cord S.p.A. A folding chair
US10470575B2 (en) 2017-07-20 2019-11-12 Procord S.P.A. Folding chair
FR3136947A1 (fr) 2022-06-13 2023-12-29 Patrick Herbault Chaise pliable à articulations simples et doubles
FR3137821A1 (fr) 2022-06-13 2024-01-19 Patrick Herbault Chaise pliable en deux mouvements
FR3136946A1 (fr) 2022-06-24 2023-12-29 Patrick Herbault Chaise pliable à articulation double rotative à secteurs

Also Published As

Publication number Publication date
BE746150A (fr) 1970-07-31
AU3828772A (en) 1973-07-26
FR2060488A5 (nl) 1971-06-18
DK131016B (da) 1975-05-20
ES157808Y (es) 1971-03-16
NL140721B (nl) 1974-01-15
NL160481B (nl) 1979-06-15
GB1231769A (nl) 1971-05-12
ES157808U (es) 1970-06-16
CH509791A (it) 1971-07-15
LU60724A1 (nl) 1970-06-15
NL160481C (nl) 1979-11-15
DE2006914C3 (de) 1974-03-21
DE7009766U (de) 1971-08-26
NL7316440A (nl) 1974-02-25
NL7002261A (nl) 1971-03-23
DK131016C (nl) 1975-11-03
YU32965B (en) 1975-12-31
DE2006914B2 (de) 1973-08-16
DE2006914A1 (de) 1971-04-15
AT296531B (de) 1972-02-25
CA877743A (en) 1971-08-10
AU465033B2 (en) 1975-08-29
YU85370A (en) 1975-06-30

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