US20120175917A1 - Collapsible chair - Google Patents

Collapsible chair Download PDF

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Publication number
US20120175917A1
US20120175917A1 US12/985,343 US98534311A US2012175917A1 US 20120175917 A1 US20120175917 A1 US 20120175917A1 US 98534311 A US98534311 A US 98534311A US 2012175917 A1 US2012175917 A1 US 2012175917A1
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US
United States
Prior art keywords
pair
bars
pivotally linked
backrest
seat
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.)
Abandoned
Application number
US12/985,343
Inventor
Libin Chen
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Individual
Original Assignee
Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to US12/985,343 priority Critical patent/US20120175917A1/en
Priority to PCT/CN2011/078237 priority patent/WO2012092767A1/en
Publication of US20120175917A1 publication Critical patent/US20120175917A1/en
Abandoned 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
    • A47C4/28—Folding chairs with flexible coverings for the seat or back elements
    • A47C4/32—Folding chairs with flexible coverings for the seat or back elements having a frame made of wood or plastics
    • A47C4/34—Folding chairs with flexible coverings for the seat or back elements having a frame made of wood or plastics with legs pivotably connected to seat or underframe
    • A47C4/38—Folding chairs with flexible coverings for the seat or back elements having a frame made of wood or plastics with legs pivotably connected to seat or underframe with cross legs
    • A47C4/40—Folding chairs with flexible coverings for the seat or back elements having a frame made of wood or plastics with legs pivotably connected to seat or underframe with cross legs of adjustable type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/026—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • A47C1/0265—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism positioned under the arm-rests
    • 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 invention relates to a collapsible chair, and more particularly, to a simply operable collapsible chair a backrest portion of which is simply adjustable with a user sitting on a seat portion thereof.
  • Collapsible chairs having a foldable frame and a soft panel attached to the frame have long been developed. They are able to be folded for saving storage space. Early collapsible chairs need a relative complex process of folding and expanding. They often require two hands and several steps. Some recent collapsible chairs have been improved and need only one hand and one step of action of user to either fold or expand the chairs. However, backrest adjustment of such simply operable collapsible chairs is still an untackled problem. It is desirable for users a one step operation collapsible chair having an adjustable backrest simply operable when a user is sitting on the chair.
  • the main object of the invention is to provide a simply operable collapsible chair having an adjustable backrest portion which is simply operable when a user is sitting on a seat portion thereof.
  • the present invention provides a collapsible chair having a frame and a soft panel attached to the frame.
  • the soft panel has a backrest portion and a seat portion.
  • the frame has a pair of front legs each having an upper end, a pair of joints to each of which the upper end of one of the pair of front legs pivotally linked, a pair of rear legs each having an upper end pivotally linked to one of the joints, a pair of seat bars each pivotally linked to respective front leg with a pin, a pair of sleeves each pivotally linked to one of the two seat bars and each slidably containing one rear leg, a pair of backrest bars each pivotally linked to respective seat bar with a link, a pair of armrest bars each having a rear end pivotally linked to each backrest bar, a pair of front scissoring bars lower ends thereof being respectively pivotally linked to the lower end of each front leg and upper ends thereof being respectively pivotally linked to a front end of each seat bar, a pair of slide blocks each being able to slide
  • FIG. 1 is a perspective view of the preferred embodiment of the collapsible chair of the invention.
  • FIG. 2 is another perspective view of the collapsible chair shown in FIG. 1 with a soft panel thereof being removed for illustration.
  • FIGS. 3 a through 3 c are partially enlarged views thereof.
  • FIG. 4 is a perspective view of the collapsible chair shown in FIG. 1 showing an operation of an adjustable backrest portion thereof.
  • FIG. 5 is a perspective view of the collapsible chair shown in FIG. 1 showing a folded frame thereof.
  • FIG. 1 Shown in FIG. 1 is the preferred embodiment of the collapsible chair of the invention.
  • the collapsible chair has a frame 1 and a soft panel 2 securely attached to the frame 1 .
  • the soft panel 2 has a backrest portion 21 and a seat portion 22 .
  • the frame 1 has a pair of front legs 10 a and 10 b each having an upper end, a pair of joints 12 a and 12 b to each of which the upper end of one of the pair of front legs 10 a or 10 b pivotally linked, a pair of rear legs 11 a and 11 b each having an upper end pivotally linked to one of the two joints 12 a or 12 b , a pair of seat bars 13 a and 13 b each pivotally linked to respective front leg 10 a and 10 b with a pin 130 a or 130 b , a pair of sleeves 131 a and 131 b each pivotally linked to one of the two seat bars 13 a and 13 b and each slidably containing one rear leg 11 a or 11 b , a pair of backrest bars 14 a and 14 b each pivotally linked to respective seat bar 13 a and 13 b with
  • a user is able to expand the collapsible chair by holding one of the two backrest bars 14 a or 14 b with one hand and shaking up and down one time.
  • the pair of seat bars 13 a and 13 b will rotate downward round each link 140 a and 140 b .
  • the pair of front legs 10 a and 10 b will rotate forward round each pin 130 a and 130 b .
  • the pair of front scissoring bars 16 a and 16 b expands and the two seat bars 13 a and 13 b departure with respect to each other.
  • the rear scissoring bars 18 a and 18 b expand until the linking poles 191 and 192 of the latch 19 are pulled to straight, as shown in FIG. 3 .
  • the latch 19 may further has at least one protrusion 193 or 194 formed on one of the two linking poles 191 or 192 .
  • the protrusion is used to prevent the linking poles 191 or 192 from rotating downward after they have been pulled to straight.
  • the latch 19 has two protrusions 193 or 194 each formed on one linking pole 191 or 192 .
  • the user while sitting on the seat portion 22 , is able to first uplift the pair of armrest bars 15 a and 15 b making the notch 153 a and 153 b leave the respective positioning pin 151 a and 151 b and move the pair of armrest bars 15 a and 15 b forward or backward.
  • the pair of backrest bars 14 a and 14 b will rotate round the link 140 a and 140 b and the slide blocks 17 a and 17 b will slide along the backrest bars 14 a and 14 b , respectively.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

A collapsible chair has a frame and a soft panel attached to the frame. The frame has a pair of front legs, rear legs, seat bars, sleeves, backrest bars, armrest bars, front scissoring bars, slide blocks, rear scissoring bars, backrest adjustment devices each having at least one positioning pin securely formed on one joint and one corresponding guiding groove being securely fixed to each armrest bar and having a plurality of notches for accommodating each positioning pin, and a latch having two pivotally linking poles each pivotally linked to one of the two rear scissoring bars. The collapsible chair is simply operable and the backrest portion of which is simply adjustable with a user sitting on a seat portion thereof.

Description

  • The invention relates to a collapsible chair, and more particularly, to a simply operable collapsible chair a backrest portion of which is simply adjustable with a user sitting on a seat portion thereof.
    • 2. DESCRIPTION OF RELATED ART
  • Collapsible chairs having a foldable frame and a soft panel attached to the frame have long been developed. They are able to be folded for saving storage space. Early collapsible chairs need a relative complex process of folding and expanding. They often require two hands and several steps. Some recent collapsible chairs have been improved and need only one hand and one step of action of user to either fold or expand the chairs. However, backrest adjustment of such simply operable collapsible chairs is still an untackled problem. It is desirable for users a one step operation collapsible chair having an adjustable backrest simply operable when a user is sitting on the chair.
    • BRIEF SUMMARY OF THE INVENTION
  • The main object of the invention is to provide a simply operable collapsible chair having an adjustable backrest portion which is simply operable when a user is sitting on a seat portion thereof.
  • In order to accomplish the above objects, the present invention provides a collapsible chair having a frame and a soft panel attached to the frame. The soft panel has a backrest portion and a seat portion. The frame has a pair of front legs each having an upper end, a pair of joints to each of which the upper end of one of the pair of front legs pivotally linked, a pair of rear legs each having an upper end pivotally linked to one of the joints, a pair of seat bars each pivotally linked to respective front leg with a pin, a pair of sleeves each pivotally linked to one of the two seat bars and each slidably containing one rear leg, a pair of backrest bars each pivotally linked to respective seat bar with a link, a pair of armrest bars each having a rear end pivotally linked to each backrest bar, a pair of front scissoring bars lower ends thereof being respectively pivotally linked to the lower end of each front leg and upper ends thereof being respectively pivotally linked to a front end of each seat bar, a pair of slide blocks each being able to slide along respective backrest bar, a pair of rear scissoring bars lower ends thereof being respectively pivotally linked to a rear end of each seat bar and upper ends thereof being respectively pivotally linked to each slide block, a pair of backrest adjustment devices each having at least one positioning pin securely formed on one joint and one corresponding guiding groove being securely fixed to each armrest bar and having a plurality of notches for accommodating each positioning pin, and a latch having two pivotally linking poles each pivotally linked to one of the two rear scissoring bars.
  • These and other objectives, features, and advantages of the present invention will become apparent from the following detailed description, the accompanying drawings, and the appended claims.
    • BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
  • FIG. 1 is a perspective view of the preferred embodiment of the collapsible chair of the invention.
  • FIG. 2 is another perspective view of the collapsible chair shown in FIG. 1 with a soft panel thereof being removed for illustration.
  • FIGS. 3 a through 3 c are partially enlarged views thereof.
  • FIG. 4 is a perspective view of the collapsible chair shown in FIG. 1 showing an operation of an adjustable backrest portion thereof. And,
  • FIG. 5 is a perspective view of the collapsible chair shown in FIG. 1 showing a folded frame thereof.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • Shown in FIG. 1 is the preferred embodiment of the collapsible chair of the invention. The collapsible chair has a frame 1 and a soft panel 2 securely attached to the frame 1. The soft panel 2 has a backrest portion 21 and a seat portion 22. Together with reference to FIGS. 2, 3 a, 3 b and 3 c, in which the soft panel 2 is removed for better illustration of the frame 1, the frame 1 has a pair of front legs 10 a and 10 b each having an upper end, a pair of joints 12 a and 12 b to each of which the upper end of one of the pair of front legs 10 a or 10 b pivotally linked, a pair of rear legs 11 a and 11 b each having an upper end pivotally linked to one of the two joints 12 a or 12 b, a pair of seat bars 13 a and 13 b each pivotally linked to respective front leg 10 a and 10 b with a pin 130 a or 130 b, a pair of sleeves 131 a and 131 b each pivotally linked to one of the two seat bars 13 a and 13 b and each slidably containing one rear leg 11 a or 11 b, a pair of backrest bars 14 a and 14 b each pivotally linked to respective seat bar 13 a and 13 b with a link 140 a and 140 b, a pair of armrest bars 15 a and 15 b each having a rear end pivotally linked to each backrest bar 14 a or 14 b, a pair of front scissoring bars 16 a and 16 b lower ends thereof being respectively pivotally linked to the lower end of each front leg 10 a or 10 b and upper ends thereof being respectively pivotally linked to a front end of each seat bar 13 a or 13 b, a pair of slide blocks 17 a and 17 b each being able to slide along respective backrest bar 14 a or 14 b, a pair of rear scissoring bars 18 a and 18 b lower ends thereof being respectively pivotally linked to a rear end of each seat bar 13 a or 13 b and upper ends thereof being respectively pivotally linked to each slide block 17 a or 17 b, a pair of backrest adjustment devices 150 a and 150 b each having at least one positioning pin 151 a or 151 b securely formed on one joint 12 a or 12 b and one corresponding guiding groove 152 a or 152 b being securely fixed to each armrest bar 15 a or 15 b and having a plurality of notches 153 a or 153 b for accommodating each positioning pin 151 a or 151 b, and a latch 19 having two pivotally linking poles 191 and 192 each pivotally linked to one of the two rear scissoring bars 18 a or 18 b.
  • In use, a user is able to expand the collapsible chair by holding one of the two backrest bars 14 a or 14 b with one hand and shaking up and down one time. The pair of seat bars 13 a and 13 b will rotate downward round each link 140 a and 140 b. The pair of front legs 10 a and 10 b will rotate forward round each pin 130 a and 130 b. The pair of front scissoring bars 16 a and 16 b expands and the two seat bars 13 a and 13 b departure with respect to each other. Then the rear scissoring bars 18 a and 18 b expand until the linking poles 191 and 192 of the latch 19 are pulled to straight, as shown in FIG. 3. In folding, the user is able to stand behind the collapsible chair and grasp one backrest bar 14 a or 14 b with one hand. By keeping one rear leg 11 a or 11 b of the same side with the held backrest bar 14 a or 14 b in touching ground, the user is able to incline the whole chair backward and the chair will collapse under its own gravity. The folded collapsible chair is as shown in FIG. 6. The user is surely able to fold the chair more efficiently with two hands. As particularly shown in FIG. 3 c, the latch 19 may further has at least one protrusion 193 or 194 formed on one of the two linking poles 191 or 192. The protrusion is used to prevent the linking poles 191 or 192 from rotating downward after they have been pulled to straight. In the shown embodiment, the latch 19 has two protrusions 193 or 194 each formed on one linking pole 191 or 192.
  • Particularly with reference to FIG. 5, the user, while sitting on the seat portion 22, is able to first uplift the pair of armrest bars 15 a and 15 b making the notch 153 a and 153 b leave the respective positioning pin 151 a and 151 b and move the pair of armrest bars 15 a and 15 b forward or backward. The pair of backrest bars 14 a and 14 b will rotate round the link 140 a and 140 b and the slide blocks 17 a and 17 b will slide along the backrest bars 14 a and 14 b, respectively. Until the user select a desired position of the backrest portion 21, he is able to press the armrest bars 15 a and 15 b down making the positioning pin 151 a and 151 b enter one notch 153 a and 153 b respectively and the pair of armrest bars 15 a and 15 b will no longer moveable. The user does not have to stand up during the whole process of the above adjustment.
  • From above description, it is seen that the objects of the present invention have been fully and effectively accomplished. Embodiment of the invention has been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure from the invention's principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims.

Claims (1)

1. A collapsible chair comprising a frame and a soft panel attached to the frame; the soft panel having a backrest portion and a seat portion; the frame having a pair of front legs each having an upper end, a pair of joints to each of which the upper end of one of the pair of front legs pivotally linked, a pair of rear legs each having an upper end pivotally linked to one of said joints, a pair of seat bars each pivotally linked to respective front leg with a pin, a pair of sleeves each pivotally linked to one of the two seat bars and each slidably containing one rear leg, a pair of backrest bars each pivotally linked to respective seat bar with a link, a pair of armrest bars each having a rear end pivotally linked to each backrest bar, a pair of front scissoring bars lower ends thereof being respectively pivotally linked to the lower end of each front leg and upper ends thereof being respectively pivotally linked to a front end of each seat bar, a pair of slide blocks each being able to slide along respective backrest bar, a pair of rear scissoring bars lower ends thereof being respectively pivotally linked to a rear end of each seat bar and upper ends thereof being respectively pivotally linked to each slide block, a pair of backrest adjustment devices each having at least one positioning pin securely formed on one joint and one corresponding guiding groove being securely fixed to each armrest bar and having a plurality of notches for accommodating each positioning pin, and a latch having two pivotally linking poles each pivotally linked to one of the two rear scissoring bars.
US12/985,343 2011-01-06 2011-01-06 Collapsible chair Abandoned US20120175917A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/985,343 US20120175917A1 (en) 2011-01-06 2011-01-06 Collapsible chair
PCT/CN2011/078237 WO2012092767A1 (en) 2011-01-06 2011-08-11 A collapsible chair

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US12/985,343 US20120175917A1 (en) 2011-01-06 2011-01-06 Collapsible chair

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WO (1) WO2012092767A1 (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2745742A1 (en) * 2012-12-18 2014-06-25 Zhejiang Hengfeng Top Leisure Co., Ltd. Supporting frame of folding chair and folding chair with adjustable backrest
US8894139B1 (en) 2013-06-22 2014-11-25 Rambling Raven Designs, Ltd Collapsible lightweight hammock chair
JP2016093475A (en) * 2014-11-14 2016-05-26 陳 徳隆 Folding chair frame
WO2016100315A1 (en) * 2014-12-15 2016-06-23 Bravo Sports Foldable chair
USD774815S1 (en) 2014-03-06 2016-12-27 Bravo Sports Shade cover
US9528292B1 (en) 2013-08-09 2016-12-27 Bravo Sports Canopy with overhang
US9538840B2 (en) 2014-06-17 2017-01-10 Zhejiang Hengfeng Top Leisure Co., Ltd. Folding chair and side table thereof
CN106562595A (en) * 2016-08-03 2017-04-19 浙江泰普森休闲用品有限公司 Folding chair which can be switched between the use state and the folded state
US9683387B2 (en) 2012-12-07 2017-06-20 Bravo Sports Canopy shelter link point
US9797157B2 (en) 2014-03-04 2017-10-24 Shelterlogic Corp. Canopy with detachable awning
US10072439B2 (en) 2012-10-02 2018-09-11 Shelterlogic Corp. Sliding-eave mount mechanism for canopy structure
US10278506B2 (en) * 2015-03-31 2019-05-07 Topsun Creative Design Folding chair with armrests
USD932580S1 (en) 2013-07-16 2021-10-05 Shelterlogic Corp. Lock for an adjustable locking leg assembly
US11241097B2 (en) 2019-06-04 2022-02-08 Yeti Coolers, Llc Portable chair
US20230157453A1 (en) * 2021-11-22 2023-05-25 Te-Lung Chen Foldable chair
US20240374033A1 (en) * 2023-05-09 2024-11-14 Te-Lung Chen Foldable chair
USD1067323S1 (en) 2019-01-14 2025-03-18 Yeti Coolers, Llc Portable chair
USD1068363S1 (en) 2019-01-14 2025-04-01 Yeti Coolers, Llc Portable chair
US12262818B2 (en) 2018-01-12 2025-04-01 Yeti Coolers, Llc Portable chair

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US10124863B2 (en) * 2016-06-24 2018-11-13 William Joseph Borden, Jr. Collapsible chair with two legs

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US6840574B1 (en) * 2003-09-22 2005-01-11 Chung-Sen Wu Foldable chair assembly
US7195310B2 (en) * 2003-10-08 2007-03-27 Benjamin P Reese Collapsible chair with adjustable backrest
US7784861B1 (en) * 2005-06-16 2010-08-31 Jianrong Deng Folding frame for a folding chair with seat back and seat cover
US20100237665A1 (en) * 2009-03-17 2010-09-23 Grace Daniel R Two-way foldable chair

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10072439B2 (en) 2012-10-02 2018-09-11 Shelterlogic Corp. Sliding-eave mount mechanism for canopy structure
US9683387B2 (en) 2012-12-07 2017-06-20 Bravo Sports Canopy shelter link point
EP2745742A1 (en) * 2012-12-18 2014-06-25 Zhejiang Hengfeng Top Leisure Co., Ltd. Supporting frame of folding chair and folding chair with adjustable backrest
US8820825B2 (en) 2012-12-18 2014-09-02 Zhejiang Hengfeng Top Leisure Co., Ltd. Supporting frame of folding chair and folding chair with adjustable backrest
US8894139B1 (en) 2013-06-22 2014-11-25 Rambling Raven Designs, Ltd Collapsible lightweight hammock chair
USD932580S1 (en) 2013-07-16 2021-10-05 Shelterlogic Corp. Lock for an adjustable locking leg assembly
US9528292B1 (en) 2013-08-09 2016-12-27 Bravo Sports Canopy with overhang
US9797157B2 (en) 2014-03-04 2017-10-24 Shelterlogic Corp. Canopy with detachable awning
USD774815S1 (en) 2014-03-06 2016-12-27 Bravo Sports Shade cover
US9538840B2 (en) 2014-06-17 2017-01-10 Zhejiang Hengfeng Top Leisure Co., Ltd. Folding chair and side table thereof
JP2016093475A (en) * 2014-11-14 2016-05-26 陳 徳隆 Folding chair frame
US9867466B2 (en) 2014-12-15 2018-01-16 Shelterlogic Corp. Foldable chair
WO2016100315A1 (en) * 2014-12-15 2016-06-23 Bravo Sports Foldable chair
US10278506B2 (en) * 2015-03-31 2019-05-07 Topsun Creative Design Folding chair with armrests
CN106562595A (en) * 2016-08-03 2017-04-19 浙江泰普森休闲用品有限公司 Folding chair which can be switched between the use state and the folded state
US12262818B2 (en) 2018-01-12 2025-04-01 Yeti Coolers, Llc Portable chair
USD1067323S1 (en) 2019-01-14 2025-03-18 Yeti Coolers, Llc Portable chair
USD1070385S1 (en) 2019-01-14 2025-04-15 Yeti Coolers, Llc Portable chair
USD1068303S1 (en) 2019-01-14 2025-04-01 Yeti Coolers, Llc Portable chair
USD1068363S1 (en) 2019-01-14 2025-04-01 Yeti Coolers, Llc Portable chair
US11241097B2 (en) 2019-06-04 2022-02-08 Yeti Coolers, Llc Portable chair
US12144430B2 (en) * 2019-06-04 2024-11-19 Yeti Coolers, Llc Portable chair
US20220167746A1 (en) * 2019-06-04 2022-06-02 Yeti Coolers, Llc Portable Chair
US11659930B1 (en) * 2021-11-22 2023-05-30 Te-Lung Chen Foldable chair
US20230157453A1 (en) * 2021-11-22 2023-05-25 Te-Lung Chen Foldable chair
US20240374033A1 (en) * 2023-05-09 2024-11-14 Te-Lung Chen Foldable chair

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