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WO2002045551A1 - Chaise pliante comprenant des accoudoirs solides et un siege tendu - Google Patents

Chaise pliante comprenant des accoudoirs solides et un siege tendu Download PDF

Info

Publication number
WO2002045551A1
WO2002045551A1 PCT/US2000/033112 US0033112W WO0245551A1 WO 2002045551 A1 WO2002045551 A1 WO 2002045551A1 US 0033112 W US0033112 W US 0033112W WO 0245551 A1 WO0245551 A1 WO 0245551A1
Authority
WO
WIPO (PCT)
Prior art keywords
pair
legs
support rods
chair
seat support
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.)
Ceased
Application number
PCT/US2000/033112
Other languages
English (en)
Inventor
Edward Zheng
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.)
TOFASCO
Original Assignee
TOFASCO
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 TOFASCO filed Critical TOFASCO
Priority to US10/433,703 priority Critical patent/US20050236873A1/en
Priority to PCT/US2000/033112 priority patent/WO2002045551A1/fr
Publication of WO2002045551A1 publication Critical patent/WO2002045551A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • A47C4/28—Folding chairs with flexible coverings for the seat or back elements
    • A47C4/286—Folding chairs with flexible coverings for the seat or back elements foldable side to side and front to back, e.g. umbrella type

Definitions

  • the field of the invention is collapsible furniture.
  • Folding chairs are relatively popular, in part because they can be stored at considerably reduced space requirements when compared to non-folding chairs.
  • Exemplary folding chairs with solid arm rests and seat support rods are described in U.S. Pat. No. 4,613,185 to Marchesini et al. (September 23, 1986), U.S. Pat. No. 5,899,525 to Tseng (May 4, 1999), U.S. Pat. No. 5,947,553 to Tseng (September 7, 1999), and U.S. Pat. No. 6,062,639 to Hill (May 16, 2000), all of which are incorporated by reference herein.
  • Sparkes describes in U.S. Pat. No. Des 247,618 (March 28, 1978) a collapsible stroller with solid armrests and seat support rods that is first folded in a front to back motion and then folded in a side-to-side motion.
  • Sparkes' stroller provides substantial space saving over non-collapsible strollers, the collapsing is relatively cumbersome since both halves of the chair have to be rotated relative to each other.
  • Improved collapsibility can be achieved by including a detachable connector element into a structure that couples foldable halves of the stroller as described in U.S. Pat. No. 4,317,581 to Kassai (March 2, 1982). Uncoupling of the detachable element advantageously simplifies side-to-side folding of the stroller.
  • Kassai 's stroller nevertheless requires at least two folding operations to collapse the stroller.
  • the present invention is directed to a collapsible chair that can be collapsed in a single motion, wherein the chair includes a pair of solid armrests and a tensioned seat coupled to a pair of seat support rods.
  • the collapsible chair has a pair of front legs, a pair of rear legs, and a pair of solid arm rests, wherein at least one of the rear legs is telescoping.
  • a backrest is coupled to a pair of back support rods
  • a tensioned seat is coupled to a pair of seat support rods, wherein the front legs, the rear legs, the arm rests, the back support rods, and the seat support rods are coupled in a manner such that the chair collapses in a single movement in which the front legs approximate each other when the front legs and the rear legs pivot towards each other and when the seat support rods and the back support rods pivot towards each other.
  • At least one of the front legs and one of rear legs are rotatably coupled to each other and rotatably coupled to an arm rest. It is further contemplated, that at least one of the seat support rods is rotatably coupled to a front and rear leg. Additional cross braces may couple the seat support rods to the front legs, and further additional cross braces may couple the back support rods to the rear legs.
  • the legs, back support rods and seat support rods are manufactured from a metal, preferably aluminum. It is preferred that the seat and backrest are removably attached to the chair, and are fabricated from a weather resistant material, preferably a synthetic polymer, and more preferably from Nylon.
  • a method of imparting collapsibility into a chair comprises one step in which a front leg, a telescoping rear leg, a seat support rod, a back support rod, and a solid armrest are provided.
  • both the back support rod and the front leg are rotatably coupled with the armrest and the seat support rod to form a quadrilateral.
  • the telescoping rear leg is rotatably coupled to at least one of the armrest and the front leg, and rotatably coupled to at least one of the seat support rod and the back support rod.
  • FIG. 1 is a perspective view of a collapsible chair without seat and backrest.
  • Figure 2 is a perspective detail view of the collapsible chair of Figure 1.
  • Figure 3 is a perspective view of the collapsible chair of Figure 1 with attached seat and backrest.
  • Figure 4 is a perspective view of the collapsible chair of Figure 1 in a collapsed configuration.
  • a collapsible chair includes a pair of solid armrests, a tensioned seat coupled to a pair of seat support rods, and a backrest coupled to a pair of back support rods.
  • Contemplated chairs further have a pair of front legs, a pair of telescoping rear legs, and can be collapsed in a single motion in which the front legs approximate each other when the front legs and the rear legs pivot towards each other and when the seat support rods and the back support rods pivot towards each other.
  • a collapsible chair 100 has a pair of front legs 110, a pair of telescoping rear legs 120, and a pair of seat support rods 130.
  • a backrest (not shown in Fig.1, see Fig.3) is attached to a pair of back support rods 140, which are coupled to the rear legs 120 and the seat support rods 130.
  • a pair of solid armrests 150 is coupled to the front legs 110, telescoping rear legs 120, and the back support rods 140.
  • a first pair of cross braces 160 is rotatably coupled to the front legs and seat support rods, and a second pair of cross braces 170 is rotatably coupled to the rear legs and back support rods.
  • FIG. 2 is a detail view of the chair depicted in Figure 1.
  • the front leg 210 is rotatably coupled to both the seat support rod 230 and solid armrest 250
  • the back support rod 240 is rotatably coupled to both the armrest 250 and the seat support rod 230.
  • the telescoping rear leg 220 is rotatably coupled to the back support rod 240, the seat support rod 230, the armrest 250, and the front leg 210.
  • the seat support rod 230 is rotatably coupled to the front leg 210 and the telescoping rear leg 220.
  • Figure 3 depicts the collapsible chair of Figure 1 with a seat 380 and a backrest 390
  • Figure 4 shows the collapsible chair of Figure 1 in a collapsed configuration.
  • the seat and the backrest are fabricated from a weather resistant material or fabric, preferably a woven synthetic polymer ⁇ e.g., Nylon) and is uniformly colored ⁇ e.g., blue).
  • a weather resistant material or fabric preferably a woven synthetic polymer ⁇ e.g., Nylon
  • Particularly preferred seats have a width of about 21 inches and an overall length of about 24 inches.
  • various alternative materials, colors, and sizes are also appropriate.
  • alternative materials may include natural and synthetic fabrics and all reasonable combinations thereof.
  • Contemplated materials may further be woven or non- woven and particularly contemplated materials include polyester, polyvinyl chloride, cotton, hemp, and wool.
  • suitable colors need not be restricted to uniform color, but appropriate colors may also include color patterns, prints, no color at all.
  • the chair according to the inventive subject matter is sized and dimensioned to fit an average adult person, it is also contemplated that appropriate chairs may also accommodate a child, a smaller- or larger-than-average adult, or more than a single person.
  • alternative chairs may have dimensions that are wider than 21 inches, and suitable widths include 21-24, 24-30, and 30-40 inches, and wider, but also 18-21, 14-18, and 8-14 inches, and narrower.
  • the length of appropriate seats may vary between 20-42, 15-10, and 12-15 inches and less, but also between 24-27, 27-30, and more. It should further be appreciated that contemplated seats may also be tapered from the front end to the back end, or vice versa.
  • the backrest is fabricated from the same material as the seat, and that the backrest is removably or permanently coupled to the seat ⁇ e.g., sewed, coupled with a zipper, etc.)
  • the backrest has a width of about 21 inches.
  • a preferred height of the backrest is about 24 inches.
  • the width and height of suitable backrests may vary, and that width and height will depend among other things on the persons' size and the number of persons to be seated in the chair.
  • alternative backrests may have a width between 18-12 inches and less, but also between 18-22 and more.
  • contemplated backrests may have a height between 12-24 inches and less, but also between 24-30 inches and more.
  • the seat and the backrest may be coupled to the back support rods and seat support rods in numerous ways, including temporary and permanent coupling.
  • Temporary couplings include hook-and-loop type fasteners, snaps, buckles, slidable elements ⁇ e.g., a pouch slidably coupled to a post, a ring slidably coupled to a rod, etc.), and threadbly securable elements ⁇ e.g., laces threaded through rings).
  • Permanent couplings include sewed or glued elements.
  • the backrest may permanently coupled to the chair via a rivet.
  • the front end of the seat may be temporarily coupled to the front legs via ring-shaped openings slided over the top ends of the front legs. It is further particularly preferred that the seat and the backrest are coupled together.
  • the attachment of the seat and/or the backrest to the chair may be directly or indirectly.
  • the term “direct” attachment means that the seat and/or the backrest are in immediate contact with the supporting structure, whereas the term “indirect” means that an additional element connects the seat and/or backrest with the supporting structure.
  • the seat may be directly attached to the seat support rods via a slidable pouch.
  • the seat may be indirectly coupled to the seat support rods via a ring-shaped opening in the seat that slidably engages with the rods.
  • the legs, back support rods, seat support rods, armrests, and cross braces of contemplated chairs may be manufactured from various materials, including metals, metal alloys, natural and synthetic polymers, and any reasonable combination thereof.
  • the legs, back support rods, seat support rods, and cross braces are manufactured from black anodized aluminum tubing with a wall strength of about V 32 inch and an outer diameter of approximately Vi inch.
  • the solid armrest is fabricated from a recycled molded thermoplastic polymer, and especially preferred alternative materials for the armrest, legs, support rods, and cross braces include stainless steel, fiberglass, and wood.
  • solid armrest means that the armrest is fabricated from a sufficiently stiff material to maintain the shape of the armrest while the chair is being folded or unfolded.
  • a wooden or metal armrest is considered a solid armrest under the scope of this definition, because such armrests are fabricated from a material with sufficient stiffness to maintain the shape of the armrest.
  • a woven or textile armrest is not considered a solid armrest under the scope of this definition because such armrests will deform ⁇ i.e. change their shape) while the chair is folded or unfolded.
  • slidable couplings are contemplated to be appropriate, and include a sliding sleeve, slide rails, guiding rings, etc.
  • contemplated couplings may be realized in various configurations. For example, where the telescoping rear leg and the front leg are coupled to the armrest at substantially the same location, the coupling may involve a single axle, pin, or otherwise rotatable connector. Alternatively, two independent axles, pins, or otherwise rotatable connectors may be employed.
  • rotatable couplings may include rotatable couplings that are also slideable relative to their point of attachment.
  • contemplated alternative rotatable couplings may include a sleeve that may be slideably coupled to e.g., a front leg with an axle which may rotatably couple another element to the coupling.
  • the coupling may be rotatable and slidable.
  • temporary couplings may be employed and suitable temporary couplings include snap connectors, connectors that are secured with a pin or other removable element, etc.
  • a telescoping rear leg need not be limited to a configuration in which a first portion of the leg is at least partially disposed wilhin the lumen of a second portion (see Figure 2).
  • Alternative configurations may include a first portion that is movable relative to a second portion, wherein the first and second portion may or may not directly contact each other.
  • a first portion and a second portion may share a common rail or other sliding mechanism through which the first and second portion are coupled to each other.
  • the first and second portion may be coupled through a series of hinge members.
  • first portion and a second portion may be engaged and/or disengaged with each other in a fixed or otherwise predetermined position relative to each other by clamps, bolts, screws, etc.
  • the telescoping rear leg may change its length via compressible, foldable, or otherwise pliable material.
  • the rear leg has a minimum length when the chair is in an extended configuration ⁇ i.e., unfolded to support a person), and a maximum length when the chair is in a substantially completely collapsed configuration.
  • a collapsible chair may have a self- folding configuration by employing a gas spring as a telescoping element in the rear leg.
  • the rear leg may be telescoping in its entirety, or may only include a telescoping portion.
  • a collapsible chair has two solid armrests, two front legs, two telescoping rear legs, two back support rods, and two seat support rods.
  • a first pair of cross braces couples (a) a first front leg with a first seat support rod on the opposite side of the chair, and (b) the second front leg with the second seat support rod.
  • a second pair of cross braces couples (a) a telescoping rear leg with a first back support rod on the opposite side of the chair, and (b) the second telescoping rear leg with the second back support rod.
  • all of the front legs, rear legs, back and seat support rods are coupled through the cross braces in a manner that allows collapsing the chair in a single movement, i.e., that the front legs approximate each other and pivot towards the rear legs as the arm rests pivot towards the back support rods.
  • the seat support rods pivot upwardly and the rear legs leg pivot towards the pair of front legs, when the chair folds into a closed configuration.
  • the number of legs, and/or seat support rods, and/or cross braces may vary considerably.
  • the chair is sized and dimensioned to accommodate more than one person, three, four, or more legs, and/or seat supports, and/or cross braces may be included.
  • three or more seat support rods may be included in a chair with two front legs and two rear legs.
  • the number of cross braces may vary, and while some chairs may have only one pair of cross braces, other chairs may include three, four, or more cross braces.
  • the seat is tensioned when the front legs move apart, and that the seat remains substantially tensioned when the seat supports a person.
  • tensioned seat means that the seat is substantially level when the chair is in the open configuration, wherein the term “substantially level” means that the vertical distance between any point of the seat and the seat support rod is no more than one 0.75 inch, more preferably no more than 0.5 inch, and most preferably no more than 0.5 inch.
  • open configuration refers to the configuration of the collapsible chair in which the front legs have a maximum distance from each other when the chair is opened using reasonable force ⁇ i.e. without damaging the mechanical structure).
  • the term “remains substantially tensioned” means that the vertical distance between the lowest point of the seat and the seat support rod increases no more than one inch, preferably no more than one inch, more preferably no more than 0.75 inch, and most preferably no more than 0.5 inch. Thus, it should be recognized that the tension of the seat is predominantly determined by the firmness of the material of the seat.
  • the tension in the seat remains substantially tensioned due to mechanically coupling an approximating movement of the seat support rods with a simultaneous movement of at least one of the rear legs relative to the front leg and a movement of the front legs relative to each other.
  • contemplated modes of coupling the front leg with the rear leg and the seat support rod prevent loss of tension of the seat when a person is supported by the chair.
  • a method of imparting collapsibility into a chair has one step in which a front leg, a telescoping rear leg, a seat support rod, a back support rod, and a solid armrest are provided.
  • both the back support rod and the front " leg are rotatably coupled with the armrest and the seat support rod to form a quadrilateral.
  • the telescoping rear leg is rotatably coupled to at least one of the armrest and the front leg, and rotatably coupled to at least one of the seat support rod and the back support rod.
  • the so formed quadrilateral that is coupled to the telescoping rear leg may then be coupled with a second quadrilateral that is coupled to a second telescoping rear leg via at least one cross brace.
  • quadrilateral refers to a configuration of a plurality of elements in which at least four of the plurality of elements are coupled to each other to form a polygon of four sides.
  • Contemplated methods may further include comprising attaching a first cross brace to the seat support rod, comprising attaching a second cross brace to the seat support rod, attaching a backrest to the back support rod, and attaching a seat to the seat support rod.

Landscapes

  • Chairs Characterized By Structure (AREA)

Abstract

L'invention concerne une chaise (100) comprenant des accoudoirs solides (150) et un siège tendu. Cette chaise se plie en un seul mouvement, les pieds avant (110) venant à proximité l'un de l'autre quand les pieds avant et arrière (120) pivotent les uns vers les autres et quand le siège et le dossier pivotent l'un vers l'autre.
PCT/US2000/033112 2000-12-05 2000-12-05 Chaise pliante comprenant des accoudoirs solides et un siege tendu Ceased WO2002045551A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/433,703 US20050236873A1 (en) 2000-12-05 2000-12-05 Collapsing chair with solid armrest and tensioned seat
PCT/US2000/033112 WO2002045551A1 (fr) 2000-12-05 2000-12-05 Chaise pliante comprenant des accoudoirs solides et un siege tendu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/033112 WO2002045551A1 (fr) 2000-12-05 2000-12-05 Chaise pliante comprenant des accoudoirs solides et un siege tendu

Publications (1)

Publication Number Publication Date
WO2002045551A1 true WO2002045551A1 (fr) 2002-06-13

Family

ID=21742048

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PCT/US2000/033112 Ceased WO2002045551A1 (fr) 2000-12-05 2000-12-05 Chaise pliante comprenant des accoudoirs solides et un siege tendu

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US (1) US20050236873A1 (fr)
WO (1) WO2002045551A1 (fr)

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US7967374B2 (en) 2009-08-20 2011-06-28 Idea Nuova, Inc. Foldable chair
US8801090B2 (en) 2012-08-09 2014-08-12 Idea Nuova, Inc. Foldable chair
USD691384S1 (en) 2012-10-18 2013-10-15 Idea Nuova Foldable chair
USD716574S1 (en) 2014-02-28 2014-11-04 Idea Nuova, Inc. Webbed saucer chair with central pad
USD712185S1 (en) 2014-02-28 2014-09-02 Idea Nuova, Inc. Trampoline chair
USD718549S1 (en) 2014-06-11 2014-12-02 Idea Nuova, Inc. Trampoline saucer chair
USD720550S1 (en) 2014-06-11 2015-01-06 Idea Nuova, Inc. Webbed saucer chair with seat pad
USD761605S1 (en) 2014-08-15 2016-07-19 Idea Nuova, Inc. Webbed saucer chair with seat pad
USD755549S1 (en) 2014-08-15 2016-05-10 Idea Nuova, Inc. Checkered saucer chair
USD756155S1 (en) 2014-10-15 2016-05-17 Idea Nuova, Inc. Woven chair
USD755551S1 (en) 2014-12-02 2016-05-10 Idea Nuova, Inc. Wicker web chair
USD756156S1 (en) 2014-12-02 2016-05-17 Idea Nuova, Inc. Wicker saucer lounge chair
USD755552S1 (en) 2014-12-02 2016-05-10 Idea Nuova, Inc. Wicker saucer chair
USD752890S1 (en) 2015-01-08 2016-04-05 Idea Nuova, Inc. Foldable club chair
US10722034B2 (en) * 2018-01-12 2020-07-28 Yeti Coolers, Llc Portable chair
USD903305S1 (en) 2019-01-14 2020-12-01 Yeti Coolers, Llc Bag
USD911731S1 (en) 2019-01-14 2021-03-02 Yeti Coolers, Llc Portable chair
USD912423S1 (en) 2019-01-14 2021-03-09 Yeti Coolers, Llc Portable chair
AU2020287097B2 (en) 2019-06-04 2023-10-26 Yeti Coolers, Llc Portable chair

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US5915782A (en) * 1993-05-03 1999-06-29 Geldbaugh; G. Richard Collapsible chair
US6082813A (en) * 1999-06-05 2000-07-04 Chen; Kao-San Foldable chair

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US703077A (en) * 1901-08-29 1902-06-24 Charles N Goodmen Folding chair.
US4826241A (en) * 1986-01-13 1989-05-02 Barras Lee J Folding chair
US4715650A (en) * 1986-02-20 1987-12-29 Cary Berman Fully collapsible portable chair
US5058950A (en) * 1989-11-05 1991-10-22 Amiram Mann Foldable chair
US5915782A (en) * 1993-05-03 1999-06-29 Geldbaugh; G. Richard Collapsible chair
US6082813A (en) * 1999-06-05 2000-07-04 Chen; Kao-San Foldable chair

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