US2920686A - Folding chair with concealed back adjustment - Google Patents

Folding chair with concealed back adjustment Download PDF

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US2920686A
US2920686A US766351A US76635158A US2920686A US 2920686 A US2920686 A US 2920686A US 766351 A US766351 A US 766351A US 76635158 A US76635158 A US 76635158A US 2920686 A US2920686 A US 2920686A
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tubes
frame
leg
rest
chair
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US766351A
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Morton I Thomas
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/28—Folding chairs with flexible coverings for the seat or back elements
    • A47C4/42—Folding chairs with flexible coverings for the seat or back elements having a frame made of metal
    • A47C4/44—Folding chairs with flexible coverings for the seat or back elements having a frame made of metal with legs pivotably connected to seat or underframe
    • A47C4/48—Folding chairs with flexible coverings for the seat or back elements having a frame made of metal with legs pivotably connected to seat or underframe with cross legs
    • A47C4/50—Folding chairs with flexible coverings for the seat or back elements having a frame made of metal 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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/14—Beach chairs ; Chairs for outdoor use, e.g. chairs for relaxation or sun-tanning
    • A47C1/143—Chaise lounges

Definitions

  • the invention herein disclosed relates to folding chairs and like furniture of the tubular frame form'of construction.
  • Special objects of the invention are to provide an adjustable folding type of chair or chaise in which the mechanism for afiectingand enabling the adjustment and folding operations will be entirely concealed and protected so as not to be in the way and so as not to possibly injure persons or clothing.
  • Fig. 1 in the drawings is' a side elevation of a chair embodying features of the invention with broken lines indicating adjustment of same to dilferent positions.
  • Fig. 2 is a side view illustrating relation of parts in the folding and unfolding operations.
  • Fig. 3 is'a broken enlarged sectional view showing cooperating parts of the adjustment mechanism carried by the leg and arm forming portions of the chair, in the upright back position indicated in full lines, Fig. 1.
  • Fig. 4 is a similar view with parts in the fully reclined position indicated in broken lines.
  • Fig. 5 is a broken longitudinal sectional view on substantially the plane of line 55 of Fig. 4.
  • Fig. 6 is a cross sectional view on substantially the plane of line 6-6 of Fig. 3.
  • Fig. 7 is a part sectional plan view on substantially the plane of line 7-7 of Fig. e
  • the chair illustrated in Figs. 1 and 2 is shown as made up of front and back leg frames 10 and 11 of tubular U formation pivotally connected together at the top at 12, a seat frame 13 pivoted to the front leg frame at 14, and a back frame 15 of U formation pivoted at the lower end at 16 to the seat frame by a rod having angular extension 17 pivoted to the rear leg frame at 18.
  • leg rest frame 19 of tubular U formation is shown pivoted to the front end of the seat frame at 20 and this leg rest frame is shown as supported by a folding tubular frame 21 pivotally connected with the leg rest frame at 22.
  • the seat frame 13, back rest frame 15 and leg rest frame 19 are usually covered with webbing or wide fabric secured at the ends by fastenings such as disclosed in Patents No. 2,817,392, December 24, 1957, Morton I. Thomas, Web Fastening, and No. 2,856,990, Ser. NO. 695,276, October 21, 1958, Morton I. Thomas,
  • the arms of the chair illustrated are of special hairpin construction made up, as shown in Fig. 7, of parallel lengths of tubing 23, 24 connected at the front by bends or bows 25, with the inner lengths 23 pivotally connected at 26 with the back frame 15 and the outer lengths 24 containing the mechanism for adjustably connecting the back rest with the legs.
  • the mechanism for adjusting the arms and back comprises, in the present illustration, plates 29 secured over the inner sides of the rear leg frames 11 by rivets30, Figs. 3, 4 and 6 between the upper ends of the front and back leg frames and projecting up through narrow slots 31 in the outer arm lengths 24 into position to engage spaced stops 32, 33, 34 and 35 in said tubular lengths.
  • the stops 32, 33 and 34 are shown carried by special brackets secured in the central portions of the tubes 24,
  • brackets as shown in Fig. 6, are of cross sec-' tional dimensions to substantially fit the interior of the tubes, as shown in Fig. 6, so that they each can then be secured against longitudinal or rocking movements in the tubes by a single cross rivet 38.
  • Fig. 3 shows how with the first stops 32 engaged with the upstanding plates or lugs 29 the back rest will be held in the upright position shown in full lines Fig. 1.
  • the back may then be easily lowered by lifting the arm rests slightly to carry the stops 32 from engagement with lugs 29 and whereupon the back may be held in either the lowered positions indicated in broken lines, Fig. l, by releasing the arm rests to engage stops 33 or 34 with the lugs, or, if dmired, the arm rests may be held up to permit engagement of the forward ends 35 of the slots with lugs 29 as in Fig. 4 for fully lowered position of the back rest.
  • This interlocked engagement of the lugs within the tubes may be effected by inserting the lugs up through the slots before secured the lugs in position on the upper ends of the legs and the ladder brackets may be inserted and secured in place in the arm forming tubes before those tubes are pivoted to the back rest.
  • the clips 28 to which the arm rests are pivoted hold the arm rests against twisting and keep the enclosed stop brackets in position for proper engagement with the upstanding stops on the legs.
  • the lugs or stop plates 29 are shown in Figs. 3, 4 and 6 as having rounded lower end portions 40 extending about the inner sides of the rear leg tubes 11, thus to center the lugs over these tubes into direct alignment with the slots 31 in the undersides of the arm tubes 24.
  • Inclined cam slopes 41 on the inner edges of the stop lugs 29 operate in the folding movement of the chair frame, Fig. 2, by engagement with lower ends 42 of the slots to lift the arms sufiiciently to avoid any interference with the folding action. These cams also operate to lift the arm rests when the back rest is raised, making it unnecesary to release the arm rests by hand when it is desired to lift the back rest to an upright or more nearly upright position.
  • the chair constructed as des cribed, is of neat, :clean, ornamental appearance.
  • the stop brackets within the arms are secured by single rivets, hardlyto be noticed on the arms and the adjusting mechanism, except for the small portions of the lugs below the arms, is entirely concealed and protected against any contact with the hands or clothing of the occupant of the chair.
  • the doubled arm construction provides more comfortable rest for the arms and while the outer tubes of these arm rests contain the stop mechanism the inner tubes of the arm rests may serve as guards, preventing the fingers reaching the small exposed portions of the stop mechanism.
  • a folding chair with concealed back adjustment means comprising in combination, front and back leg forming tubes with their upper ends in side-by-side relation, a lug plate interposed between said upper ends and having a lower portion curved in close fitting engagement with the back leg tube and a straight flat upper portion projecting above said upper ends of said tubes, a fastening securing said curved portion of the plate in close fitting non-rotative engagement with said back'leg tube, a pivot pin extending through the upper end portions of said leg tubes and through the portion of the plate between the same and whereby said plate is rigidly secured in upstanding relation between the pivotally connected leg tubes, a seat frame pivoted to the front leg tube at its forward end, a back frame pivotally connected at its lower end to the back leg tube and tothe seat frame, a tubular arm rest pivotally connected to said back frame at its rearward end and having an elongated, straight, narrow slot in the underside of the same slidingly receiving said upwardly projecting fiat straight upper lug ortion of said plate, the upper end of said plate
  • a folding chair with concealed backadjustment means comprising in combination, front and back leg forming tubes with their upper ends in side-by-side relalation, a lug plate interposed between said upper ends and having a lower portion curved in close fitting engagement with the back leg tube and a straight flat upper portion projecting above said upper ends of said tubes, a fastening securing said curved portion of the plate in close fitting non-rotative engagement with said back leg tube, a pivot pin extending through the upper end portions of said leg tubes and through the portion of the the plate between the same and whereby said plate is rigidly secured in upstanding relation between the pivotally connected leg tubes, a seat frame pivoted to the front leg tube at its forward end, a back frame pivotally connected at its lower end to the back leg tube and to the seat frame, a tubular arm rest pivotally connected to said back frame at its rearward end and having an elongated, straight, narrow slot in the underside of the same slidingly receiving said upwardly projecting fiat straight upper lug portion of said plate, the

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Description

M. I THOMAS Jan. 12, 1960 FOLDING CHAIR WITH CONCEALED BACK ADJUSTMENT 2 Sheets-Sheet 1 Filed 001;. 9, 1958 b lt li INVENTOR. M0870! F o/v45 M. l. THOMAS 2,920,686
FOLDING CHAIR WITH CONCEALED BACK ADJUSTMENT Jan. 12, 1960 2 Sheets-Sheet 2 Filed Oct. 9, 1958 l Ill Mll HlHdl -l Ell-I2. ll!
' FOLDING CHAIR wrrn coNcEAL'Ei') BACK ADJUSTMENT The invention herein disclosed relates to folding chairs and like furniture of the tubular frame form'of construction. a
Special objects of the invention are to provide an adjustable folding type of chair or chaise in which the mechanism for afiectingand enabling the adjustment and folding operations will be entirely concealed and protected so as not to be in the way and so as not to possibly injure persons or clothing.
Other special objects of the invention are to provide furniture of such character which can be produced at reasonable cost and which will be generallypractical and desirable.
The foregoing and other objects are attained by certain.
novel features of construction, combinations and relations of parts all as hereinafter defined and claimed.
The drawings accompanying and forming part of the following specification are illustrative of a present practical embodiment of the invention. Structure however may be modified and changed as regards such illustration, all within the true intent and scope of the invention as hereinafter defined and claimed.
Fig. 1 in the drawings is' a side elevation of a chair embodying features of the invention with broken lines indicating adjustment of same to dilferent positions.
Fig. 2 is a side view illustrating relation of parts in the folding and unfolding operations.
Fig. 3 is'a broken enlarged sectional view showing cooperating parts of the adjustment mechanism carried by the leg and arm forming portions of the chair, in the upright back position indicated in full lines, Fig. 1.
Fig. 4 is a similar view with parts in the fully reclined position indicated in broken lines.
Fig. 5 is a broken longitudinal sectional view on substantially the plane of line 55 of Fig. 4.
Fig. 6 is a cross sectional view on substantially the plane of line 6-6 of Fig. 3.
Fig. 7 is a part sectional plan view on substantially the plane of line 7-7 of Fig. e
The chair illustrated in Figs. 1 and 2 is shown as made up of front and back leg frames 10 and 11 of tubular U formation pivotally connected together at the top at 12, a seat frame 13 pivoted to the front leg frame at 14, and a back frame 15 of U formation pivoted at the lower end at 16 to the seat frame by a rod having angular extension 17 pivoted to the rear leg frame at 18.
'A leg rest frame 19 of tubular U formation is shown pivoted to the front end of the seat frame at 20 and this leg rest frame is shown as supported by a folding tubular frame 21 pivotally connected with the leg rest frame at 22.
The seat frame 13, back rest frame 15 and leg rest frame 19 are usually covered with webbing or wide fabric secured at the ends by fastenings such as disclosed in Patents No. 2,817,392, December 24, 1957, Morton I. Thomas, Web Fastening, and No. 2,856,990, Ser. NO. 695,276, October 21, 1958, Morton I. Thomas,
United imPatentQ 'f p 2,920,686 Patented Jan. 12,1960
Fastening of Wide Fabric to Metal Chair Frames and the Like. j The arms of the chair illustrated are of special hairpin construction made up, as shown in Fig. 7, of parallel lengths of tubing 23, 24 connected at the front by bends or bows 25, with the inner lengths 23 pivotally connected at 26 with the back frame 15 and the outer lengths 24 containing the mechanism for adjustably connecting the back rest with the legs.
The pivotal engagement of the arms with the back is shown as effected 'by U clips 27 secured to the back frame byrivets 28, receiving the ends of arm elements '23 and through which the pivot studs or rivets 26 are passed. V
The mechanism for adjusting the arms and back comprises, in the present illustration, plates 29 secured over the inner sides of the rear leg frames 11 by rivets30, Figs. 3, 4 and 6 between the upper ends of the front and back leg frames and projecting up through narrow slots 31 in the outer arm lengths 24 into position to engage spaced stops 32, 33, 34 and 35 in said tubular lengths.
The stops 32, 33 and 34 are shown carried by special brackets secured in the central portions of the tubes 24,
whereas the final stops 35 are shown in Figs. 3 and 4 as likeconstruction having the side rails 36, 37, Fig. 5
connected in spaced apart relation by cross pieces constituting the stops 32, 33, 34.
These brackets, as shown in Fig. 6, are of cross sec-' tional dimensions to substantially fit the interior of the tubes, as shown in Fig. 6, so that they each can then be secured against longitudinal or rocking movements in the tubes by a single cross rivet 38.
Fig. 3 shows how with the first stops 32 engaged with the upstanding plates or lugs 29 the back rest will be held in the upright position shown in full lines Fig. 1. The back may then be easily lowered by lifting the arm rests slightly to carry the stops 32 from engagement with lugs 29 and whereupon the back may be held in either the lowered positions indicated in broken lines, Fig. l, by releasing the arm rests to engage stops 33 or 34 with the lugs, or, if dmired, the arm rests may be held up to permit engagement of the forward ends 35 of the slots with lugs 29 as in Fig. 4 for fully lowered position of the back rest.
In these adjustments the arms are prevented from being lifted out of engagement with the upstanding lugs 29 by angular extensions 39 on the upper ends of the lugs of greater lateral extent than the Width of slots 31.
This interlocked engagement of the lugs within the tubes may be effected by inserting the lugs up through the slots before secured the lugs in position on the upper ends of the legs and the ladder brackets may be inserted and secured in place in the arm forming tubes before those tubes are pivoted to the back rest.
The clips 28 to which the arm rests are pivoted hold the arm rests against twisting and keep the enclosed stop brackets in position for proper engagement with the upstanding stops on the legs.
The lugs or stop plates 29 are shown in Figs. 3, 4 and 6 as having rounded lower end portions 40 extending about the inner sides of the rear leg tubes 11, thus to center the lugs over these tubes into direct alignment with the slots 31 in the undersides of the arm tubes 24.
Inclined cam slopes 41 on the inner edges of the stop lugs 29 operate in the folding movement of the chair frame, Fig. 2, by engagement with lower ends 42 of the slots to lift the arms sufiiciently to avoid any interference with the folding action. These cams also operate to lift the arm rests when the back rest is raised, making it unnecesary to release the arm rests by hand when it is desired to lift the back rest to an upright or more nearly upright position.
In addition to-mechanical and manufacturing advantages the chair, constructed as des cribed, is of neat, :clean, ornamental appearance. The stop brackets within the arms are secured by single rivets, hardlyto be noticed on the arms and the adjusting mechanism, except for the small portions of the lugs below the arms, is entirely concealed and protected against any contact with the hands or clothing of the occupant of the chair. The doubled arm construction provides more comfortable rest for the arms and while the outer tubes of these arm rests contain the stop mechanism the inner tubes of the arm rests may serve as guards, preventing the fingers reaching the small exposed portions of the stop mechanism.
The few parts required in .the make-up of the chair also is a factor in the low costof manufacture of this chair construction.
' What is claimed is:
1. A folding chair with concealed back adjustment means comprising in combination, front and back leg forming tubes with their upper ends in side-by-side relation, a lug plate interposed between said upper ends and having a lower portion curved in close fitting engagement with the back leg tube and a straight flat upper portion projecting above said upper ends of said tubes, a fastening securing said curved portion of the plate in close fitting non-rotative engagement with said back'leg tube, a pivot pin extending through the upper end portions of said leg tubes and through the portion of the plate between the same and whereby said plate is rigidly secured in upstanding relation between the pivotally connected leg tubes, a seat frame pivoted to the front leg tube at its forward end, a back frame pivotally connected at its lower end to the back leg tube and tothe seat frame, a tubular arm rest pivotally connected to said back frame at its rearward end and having an elongated, straight, narrow slot in the underside of the same slidingly receiving said upwardly projecting fiat straight upper lug ortion of said plate, the upper end of said lug portion having an angular extension disposed within the tubular arm rest toprevent escape of said lug portion through said narrow slot in the arm rest and a bracket fixedly secured within said tubular arm rest having spaced stop shoulders disposed over said longitudinal slot in position for engagement by the upper end portion of the lug disposed within said tubular armrest.
2."A folding chair with concealed backadjustment means comprising in combination, front and back leg forming tubes with their upper ends in side-by-side relalation, a lug plate interposed between said upper ends and having a lower portion curved in close fitting engagement with the back leg tube and a straight flat upper portion projecting above said upper ends of said tubes, a fastening securing said curved portion of the plate in close fitting non-rotative engagement with said back leg tube, a pivot pin extending through the upper end portions of said leg tubes and through the portion of the the plate between the same and whereby said plate is rigidly secured in upstanding relation between the pivotally connected leg tubes, a seat frame pivoted to the front leg tube at its forward end, a back frame pivotally connected at its lower end to the back leg tube and to the seat frame, a tubular arm rest pivotally connected to said back frame at its rearward end and having an elongated, straight, narrow slot in the underside of the same slidingly receiving said upwardly projecting fiat straight upper lug portion of said plate, the upper end of said lug portion having an angular extension disposed within the tubular arm rest to prevent escape of said lugportion through said narrow slot in the arm rest and a bracket fixedly secured within said tubular arm rest having spaced stop shoulders disposed over said longitudinal slot in position for engagement'by the upper end portion of the lug disposed within said tubular arm rest and said tubular arm rest being of hairpin construction with double lengths in substantially parallel side-by-side relation connected by a rounded bend forming a hand support at the front of the chair and the pivotal connection between said arm rest and said back frame comprising a U-clip embracing the back frame and having forwardly projecting spaced side portions with the inner length of said doubled arm rest'interposed between said spaced sides and a pivot pin'extending through both said lengths and through said side portions of said U-clip.
References Cited in the file of this patent UNITED STATES PATENTS D. 173,766 Rosenfield Dec. 28, 1954 D. 180,492 Martine June 18, 1957 246,465 Cotton Aug. 30, 1881 485,273 Hacklaender Nov. 1, 1892 2,213,590 Parry Sept. 3, 1940 2,428,877 Holabird Oct. 14, 1947 2,454,408 Roth Nov. '23, 1948 2,659,416 Heyman Nov. 17, 1953 2,847,060 Pearlstine Aug. 12, 1958 2,872,969 Thomas Feb. 10, 1959 FOREIGN PATENTS 497,946 Great Britain Dec. 30, 1938
US766351A 1958-10-09 1958-10-09 Folding chair with concealed back adjustment Expired - Lifetime US2920686A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972373A (en) * 1959-07-27 1961-02-21 Morton I Thomas Concealed adjustment mechanism for folding chairs
US3029104A (en) * 1960-02-10 1962-04-10 Hampden Specialty Products Cor Three piece chaise lounge
US3031228A (en) * 1959-09-16 1962-04-24 Salmanson & Co Inc Chaise, lounge and the like
US3126225A (en) * 1964-03-24 Chaise lounge
US4906046A (en) * 1988-03-02 1990-03-06 Grosfillex S.A.R.L. (Societe A Responsabilite Limitee) Stackable chair with foldable back and arm rests
US5613737A (en) * 1995-11-21 1997-03-25 Tseng; Chuen-Shyan Lawn chair with protective armrest sleeve members
US20120280549A1 (en) * 2011-05-06 2012-11-08 Jgr Copa, Llc Chair adjustment mechanism
US9173495B2 (en) 2011-05-06 2015-11-03 Jgr Copa, Llc Chair adjustment mechanism
USD784116S1 (en) 2014-06-18 2017-04-18 Jgr Copa, Llc Folding chair arm adjustment bracket and stem
US11241097B2 (en) 2019-06-04 2022-02-08 Yeti Coolers, Llc Portable chair

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US246465A (en) * 1881-08-30 Folding chair
US485273A (en) * 1892-11-01 Reclining-chair
GB497946A (en) * 1937-06-30 1938-12-30 Charles William Ambrose Improvements in or relating to the construction of the arms of chairs, settees and the like
US2213590A (en) * 1937-10-27 1940-09-03 Telescope Folding Furniture Co Collapsible chair
US2428877A (en) * 1946-01-11 1947-10-14 William S Holabird Furniture construction
US2454408A (en) * 1946-12-26 1948-11-23 Troy Sunshade Company Lounge chair
US2659416A (en) * 1950-10-14 1953-11-17 Heyman Sam Collapsible reclining chair
US2847060A (en) * 1957-06-11 1958-08-12 Bunting Company Inc Adjustable chaise longue
US2872969A (en) * 1958-03-10 1959-02-10 Morton I Thomas Adjustable folding chair

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US246465A (en) * 1881-08-30 Folding chair
US485273A (en) * 1892-11-01 Reclining-chair
GB497946A (en) * 1937-06-30 1938-12-30 Charles William Ambrose Improvements in or relating to the construction of the arms of chairs, settees and the like
US2213590A (en) * 1937-10-27 1940-09-03 Telescope Folding Furniture Co Collapsible chair
US2428877A (en) * 1946-01-11 1947-10-14 William S Holabird Furniture construction
US2454408A (en) * 1946-12-26 1948-11-23 Troy Sunshade Company Lounge chair
US2659416A (en) * 1950-10-14 1953-11-17 Heyman Sam Collapsible reclining chair
US2847060A (en) * 1957-06-11 1958-08-12 Bunting Company Inc Adjustable chaise longue
US2872969A (en) * 1958-03-10 1959-02-10 Morton I Thomas Adjustable folding chair

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126225A (en) * 1964-03-24 Chaise lounge
US2972373A (en) * 1959-07-27 1961-02-21 Morton I Thomas Concealed adjustment mechanism for folding chairs
US3031228A (en) * 1959-09-16 1962-04-24 Salmanson & Co Inc Chaise, lounge and the like
US3029104A (en) * 1960-02-10 1962-04-10 Hampden Specialty Products Cor Three piece chaise lounge
US4906046A (en) * 1988-03-02 1990-03-06 Grosfillex S.A.R.L. (Societe A Responsabilite Limitee) Stackable chair with foldable back and arm rests
US5613737A (en) * 1995-11-21 1997-03-25 Tseng; Chuen-Shyan Lawn chair with protective armrest sleeve members
US20120280549A1 (en) * 2011-05-06 2012-11-08 Jgr Copa, Llc Chair adjustment mechanism
US9173495B2 (en) 2011-05-06 2015-11-03 Jgr Copa, Llc Chair adjustment mechanism
USD784116S1 (en) 2014-06-18 2017-04-18 Jgr Copa, Llc Folding chair arm adjustment bracket and stem
US11241097B2 (en) 2019-06-04 2022-02-08 Yeti Coolers, Llc Portable chair

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