US3554141A - Folding table - Google Patents

Folding table Download PDF

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Publication number
US3554141A
US3554141A US785408*A US3554141DA US3554141A US 3554141 A US3554141 A US 3554141A US 3554141D A US3554141D A US 3554141DA US 3554141 A US3554141 A US 3554141A
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US
United States
Prior art keywords
legs
assemblies
table top
folded
plates
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
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US785408*A
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English (en)
Inventor
Alan Carleton Burr
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.)
HOWE FOLDING FURNITURE Inc
Original Assignee
HOWE FOLDING FURNITURE Inc
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Publication date
Application filed by HOWE FOLDING FURNITURE Inc filed Critical HOWE FOLDING FURNITURE Inc
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Publication of US3554141A publication Critical patent/US3554141A/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B7/00—Tables of rigid construction
    • A47B7/02—Stackable tables; Nesting tables
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B3/00—Folding or stowable tables
    • A47B3/08—Folding or stowable tables with legs pivoted to top or underframe
    • A47B3/0809—Folding or stowable tables with legs pivoted to top or underframe with elastic locking means
    • A47B3/0815—Folding or stowable tables with legs pivoted to top or underframe with elastic locking means the resilient force of the elastic locking means acting in a direction perpendicular to the axis of rotation of the leg

Definitions

  • a table top having depending side aprons is provided with folding and support means, each comprising a subassembly of two legs and an interconnecting stretcher-end apron, which are floatingly mounted between brackets depending from the top by pin and slot means and are controlled by the disposition of the pins and slots and by coacting spring means to cause the end assemblies to abut against the ends of the side aprons when unfolded and to swing away from the top and move inwardly of the top to lie wholly within the perimeter of the top and superimposed on the side aprons when folded, or, if the legs of the two subassemblies are too long relative to the length of the top to be folded into the same plane, with the legs of one end assembly superimposed on the side aprons and with the legs of the other end assembly superimposed upon them.
  • Hooklike members projecting from inward extensions of the legs of each subassembly partly encircle a crossbar as the subassembly is moved from folded to unfolded position, and press against it, to provide an automatic lock
  • eccentric pivot means rotatably supporting the crossbar provides increased locking pressure when the bar is rotated, the spring means and the pivot means coacting to resist inadvertent rotation of the crossbar in an unlocking direction.
  • SUMMARY -An object of the invention is to provide a foldable table having legs which in open position are disposed close to the ends of the table and in folded position lie within the. perimeter of the table top.
  • Another object of the invention is .to provide mounting means for the end support assemblies "which will permit the assemblies to be disposed in folded condition in planes parallel to, and spaced from the plane of the table top.
  • Another object of the invention is to provide simple means for automatically locking an end support. assembly in open position.
  • Another object of the invention is to provide means for increasing the automatic. locking force and for resisting unlocking.
  • Another object of the invention is to provide means for initially resisting folding or unfolding movement, for exerting a steadying control of the end assemblies while they are moving between open and folded position, for aiding in the compleend support assemblies in open or in folded position.
  • the legs pivot on the ends of the side aprons causing the upper ends of the subassemblies to be lifted and swung away from the under surface of the table top and moved inwardly along the top until they lie wholly within the perimeter of the top in a plane parallel to the top.
  • the spring members coact with the pin and slot mounting of the subassemblies to draw the subassemblies inwardly over the top.
  • the faces of the leg extensions each define a reentry groove partly encircled by a hook-shaped portion of the-said extension.
  • Automatic locking of the end assemblies is accomplished by movement of the hook-shaped portions which move with the legs relative to crossbars which are provided adjacent each end of the table.
  • the crossbars are each mounted on eccentrically disposed pivots and in position to be partly encircled and frictionally engaged by said hook-shaped members.
  • a folding table comprises a top with side aprons and two w end support assemblies each comprising two legs with inwardly projecting extensions,- and a stretcher extending between the upper ends of the legs and also serving,,in unfolded position,'asan end apron.
  • Each extension sometimes referred to herein as a plate, has a slot and the subassembly is mounted on support pins which extend into the slots from support means depending from the top adjacent its sideedg'es.
  • Spring members which are connected at one end to the plates respectively and at the other end to rotatable pivot pins, provide control of the movements of said subassemblies which are first lifted away from the table top and then swung inwardly of the top as they move from unfolded to folded position.'ln unfolded position the inner faces,
  • FIG. 1 is a perspective view of a table in unfolded working position. Without looking at the underside of the table top it would not be possible to tell whether the structure is that of said U.S. Pat. No. 3,093,095, or of the present invention.
  • FIG. 2 is a view taken on the line 2-2 of FIG. I with the table lying on its back showing a portion of one end support assembly in fully unfolded position ancl also in partly folded position.
  • FIG. 3 is a view similar to FIG. 2 showing the relation of the leg structure in fully folded position and lying on a side apron. In this position the locking bar is completely disengaged.
  • FIG. 4 is a plan view looking at the underside of the table structure shown in FIGS. 2 and 3.
  • FIG. 5 is a detail view partly in cross section showing the mounting of a locking bar between side flanges of the table structure.
  • FIG. 6 is a view of a stack of tables looking at the ends of the tables.
  • FIG. 7 is a view of a folded unit disposed on one side.
  • FIG. 8 is a view of a folded unit disposed on one end.
  • FIG. 9 is a view similar to FIG. 3 but modified by the use of legs which are of such length in proportion to the length of the table that when folded the outer ends of the legs overlap, and shows that the means provided herein enable both end support assemblies to lie flat with one superimposed upon the other and in a form to be conveniently stacked.
  • a folding table comprising the top 10 which has depend-- assembly are not only aligned transversely of the table with their interconnecting stretcher aprons but they are also aligned longitudinally of the table the side aprons 12 and the upper portions'of the legs of each end assembly abut against the adjacent ends of the side aprons when unfolded.
  • hinge means employed to make the end support assemblies foldable as in U.S. Pat. No. 3,093,095, will cause the upper ends of the legs and the intermediate stretcher apron of an end support assembly to extend beyond the ends of the table top in folded position.
  • One of the objects of this invention is to avoid the projection of any part of an end support assembly beyond the ends of the table top when the table is folded, and this has been accomplished in the present structure by a combination of means which cause each end support assembly, as it is folded, to swing first outwardly, away from the inner surface of the table top, and then to be drawn inwardly until the full length of the folded end assembly is within a projection of the perimeter of the table top and the legs 20 comprising each end support assembly are superimposed upon the under surface of the side apron members 12 respectively, and are yieldingly retained in that position to prevent the end assemblies from flopping about when the tables are being handled in folded condition.
  • This swinging action is accomplished by a combination of a specially positioned pin and slot mounting for the end assemblies and coacting springs, also specially positioned.
  • the springs provide stability to the end assemblies while they are moving on their pin mountings. They also resist folding and unfolding motion, and, after a high point is passed, aid in the completion of the folding and unfolding movements and serve to yielding retain the end support assemblies in fully folded or unfolded position, as will be more fully described.
  • the plates 24 Projecting inwardly of the table from along the inner faces of the respective legs of each end support assembly are the extensions or plates 24.
  • the plates 24 are angle members comprising a longer arm 24a which extends along the inner face of a leg 20, between the leg and an end of an inner channel member 23b, which together with the slightly longer channel member 23a comprise stretcher-end aprons 22, and a shorter arm 24b which is bent over the inside of 23b and secured to it.
  • Each end support assembly therefore comprises, in addition to a pair of legs and an interconnecting stretcher apron, a pair of plates 24 extending at right angles to the legs respectively.
  • This whole assembly is floatingly mounted on pins 26 provided in support brackets 28, which as shown are short members depending from the table top 10 in parallel with the side aprons l2 and disposed just inside the side aprons.
  • the pins 26 could be mounted on the side apron members, which as illustrated are inwardly opening channel members, but this might to some extent mar the appearance of the table and so the pins are preferably mounted in brackets 28 respectively and the side aprons l2 serve to hide from view both the brackets 28 and the pins 26 when the table is in unfolded position.
  • the pins 26 are received in slots 30 provided in plates 24 respectively, and it will be seen from FIGS. 3 and 9 that the slots extend at right angles to the table top when an end assembly is in folded position, and extend parallel to the table top when an end assembly is in fully unfolded position.
  • the length of the slot depends upon the distance between the table top and the plane parallel to the table top into which it is desired to position the end assembly in folded position.
  • the slots need only be long enough to allow for some movement, about one-half inch, of the plates relative to the pins, plus a distance sufficient for an end assembly to move away from the table top.
  • the length of the table top is so small in relation to the length of the legs that, in folded condition, one of the end assemblies is swung into a first plane parallel to the top and superimposed over the bottoms of the side aprons I2 and the other end assembly is swung into a second plane still further removed from the plane of the table top in order to be superimposed over the end assembly the legs of which are directly superimposed on the bottoms of the side aprons, the slots 30 will have to be of a length slightly greater, about one-half inch greater, than the width of a leg 20 superimposed on the side apron as shown in FIG. 9.
  • each plate 24 which is remote from the supporting leg defines a reentry groove 32 between a rounded edge portion 34, in which the slot 30 is disposed, and a hook-shaped portion 36 which extends outwardly beyond portion 34 and partly over the space comprising said reentry groove, which thus opens inwardly at an angle from a narrow mouth into a space which is enlarged beyond the inwardly curved opposed faces of the edge portions 34 and 36.
  • it is the inner edge 36a of the hook-shaped portions which are most important since in open position they engage and press against a crossbar 38 to provide a positive lock for the end assembly of which they form a part.
  • the ends of the crossbars do not extend to the side aprons 12, or, more specifically, they do not extend to the supporting brackets 28 which are provided inside of the side aprons. Instead they are welded to the long arm 42 of J- pivot pins 40, the outer ends of which extend through, and are rotatably mounted in, said brackets 28 which thus support the crossbars on an eccentric axis.
  • the short arm 44 of each .lbracket is used to anchor one end of a spring member 46.
  • a spring member 46 is attached to the inner face of each plate 24 as by a lug 48, located adjacent to, and beyond the inner end of the slot 30, and nearer the edge of the plate which is its upper edge when the end assembly of which it forms a part is fully unfolded.
  • the other end of the spring is attached, as stated above, to the short arm of the J-bracket, which as described above is rotatable.
  • the crossbars 38 are so positioned that as an end support assembly is moved through an are from folded to unfolded position the hook portions 36 of the plates 24 comprised in the assembly will swing under and partly around the opposed crossbar 38.
  • the inner edges 36a of the hook members are shaped so that they will bear forcibly against the inner surface of the crossbar when the leg is in fully unfolded position and thus will draw the end assembly up tightly against the ends of the opposed side aprons. This in itself will provide a dependable lock, but as a further precaution against inadvertent folding of an end assembly, each crossbar 38 has projecting at right angles to it, intermediate its ends, a handle 39 for facilitating rotation of the crossbar, and as best seen in FIG.
  • this action rotates the crossbar on its eccentric J-pivot pin axis causing it to move further along the opposed edge 360, which because of its shape increases still further the locking pressure between the crossbar and edge 36a.
  • the J-pivot pins are rotated sufficiently to move their short arms 44 into position where the spring members 46 tend to resist return rotation and thus a positive lock is provided until the handle of the crossbar is lifted to disengage the crossbar from the edge 36a of the hook-shaped member 36.
  • spring members 46 serve several functions:
  • the springs coact with the pins 26 and slots 30 to control the floatingly mounted end assemblies, maintaining tension on the assembly as the legs of the assembly pivot around the ends of the abutting side aprons during both folding and unfolding of the end assemblies.
  • the springs not only hold the legs of an end assembly against the adjacent ends of the side aprons when the table is unfolded but also hold the legs of an assembly in folded position, superimposed over the bottom of the side aprons 12 or over the legs of the opposed end support assembly as the case may be.
  • the springs aid the final unfolding movement of the end support assembly and thus helps to urge the plates 24 into position where their hook-shaped portions 36 will encircle and press against the opposed crossbar 38, providing an initial locking of the end assembly in unfolded position.
  • LA folding table comprising a top, two end support assemblies, each comprising two. legs and an interconnecting stretcher, and pin and slot meansfor floatingly mounting the assemblies under the table top.
  • the stretchers serving as end aprons when the table is in unfolded position, and side apron members depending from the top along its sides respectively, and each extending into aligned, abutting relation with one leg of each end support assembly when said legs are in unfolded position, and servingas support means on the undersurface' of which said legs are superimposed in folded position, means including said pin and slot means for supporting the assemblies for swinging movement between an unfolded position in which the assemblies are substantially normal to the plane of the top and disposed under the corners.
  • a folding table comprising a top, brackets depending from the top along its lateral edges. adjacent the ends of the top, end support assemblieseach comprising a pair of legs interconnected by a stretcher, plates projecting inwardly from disposed to be encircled and frictionally engaged by the hook members of said plates respectiveiyas theend support assemadjacent the top of the legs respectively, plate mounting pins projecting inwardly from said brackets the said plate having slots in which said pins are respectively received to floatingly mount the end assemblies for movement between an unfolded position normal to the top and a folded position in which they are disposed in a plane parallel to'the plane of the top, and camming means disposed in abutting relation to said legs and coacting with the pin and slot mounting of the assemblies as the assemblies are moved from unfolded to folded position to first lift the assemblies away from the under surface of the table top and then move them inwardly of the table top into a plane parallel with the table top.

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US785408*A 1968-08-20 1968-08-20 Folding table Expired - Lifetime US3554141A (en)

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US78540868A 1968-08-20 1968-08-20

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Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945328A (en) * 1974-11-13 1976-03-23 Krueger Metal Products, Inc. Hinge lock mechanism for folding table leg
DE3011270A1 (de) * 1980-03-24 1981-10-01 Mesax AG, 8600 Dübendorf, Zürich Vorrichtung, insbesondere behaelter, mit einem tragboden und daran angeordneten klappbeinen
US4444124A (en) * 1981-10-26 1984-04-24 Howe Furniture Corporation Foldable trestle type table
DE3229210C1 (de) * 1982-08-05 1984-04-26 Kusch & Co Sitzmöbelwerke KG, 5789 Hallenberg Klapptischbeschlag
US5323713A (en) * 1992-07-29 1994-06-28 Northwest Metal Products, Inc. Locking mechanism for folding table legs
US5490467A (en) * 1994-12-23 1996-02-13 Howe Furniture Corporation Folding table mechanism
US5673633A (en) * 1995-05-31 1997-10-07 Pfister; Joel W. Table leg system
US5681034A (en) * 1994-05-28 1997-10-28 Wolfcraft Gmbh Foldable worktable
US5913272A (en) * 1998-06-19 1999-06-22 Ditto Sales, Inc. Folding table release latch apparatus
US5941181A (en) * 1997-04-18 1999-08-24 Krueger International, Inc. Folding table leg apparatus
US6394005B1 (en) 2000-07-28 2002-05-28 Valley Design Enterprises, Inc. Articulating locking mechanism
US20030164123A1 (en) * 2002-03-01 2003-09-04 Leng Lou-Hao Table with leg lock
US20030200904A1 (en) * 2002-04-09 2003-10-30 Strong L. Curtis Pivotal connection of a table leg to a frame
US20040031422A1 (en) * 2002-08-16 2004-02-19 Hsin-Chuan Wong Control structure of supporting foot for collapsible furniture
US20040201268A1 (en) * 2003-04-08 2004-10-14 Dick Liao Kneeling bench
US20040255826A1 (en) * 2003-04-09 2004-12-23 Kent Ashby Table
US20050103958A1 (en) * 2003-11-13 2005-05-19 Chun-Hsien Tseng Foldable article of furniture
US20060021551A1 (en) * 2004-07-30 2006-02-02 Pleiman Brian R Table with folding leg
US20060191448A1 (en) * 2004-12-23 2006-08-31 Harry Chen Worktable
US20110005437A1 (en) * 2009-07-09 2011-01-13 Ching Chi Yih Industrial Co., Ltd. Collapsing device of a desk
US20110061573A1 (en) * 2006-07-21 2011-03-17 Meco Corporation Folding table and chair
US20110139042A1 (en) * 2008-08-11 2011-06-16 DSA International, Inc. Table with Pivotable Table Top
US8413594B2 (en) 2010-08-18 2013-04-09 DSA International, Inc. Folding leg latch assembly
US20130269574A1 (en) * 2012-04-11 2013-10-17 Christopher Cooper Expandable and collapsible tables and related methods
CN106690802A (zh) * 2016-12-21 2017-05-24 苍南中学 折叠桌
US10506870B2 (en) * 2016-02-26 2019-12-17 Bcg Design Group Limited Table and table connector system
US11058215B2 (en) * 2019-09-30 2021-07-13 Nupur, LLC Product for holding items and method for making same
RU213434U1 (ru) * 2022-07-18 2022-09-12 Александр Олегович Сокольвак Предмет складной мебели
US20220395089A1 (en) * 2021-06-15 2022-12-15 Lifetime Products, Inc. Locking mechanism for a table leg assembly
USD996069S1 (en) 2021-03-30 2023-08-22 Nupur, LLC Stand
USD1024631S1 (en) 2020-05-13 2024-04-30 Napur, LLC Stand

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5948578A (ja) * 1982-09-14 1984-03-19 株式会社東芝 貯蔵庫の扉枢支装置
GB9223333D0 (en) * 1992-11-06 1992-12-23 Hughes Luke A Folding table
GB9414715D0 (en) * 1994-07-21 1994-09-07 Buko Ltd Support
GB2370923B (en) * 2001-01-09 2002-12-11 Teche Technology Co Ltd Wheel with a generator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US272909A (en) * 1883-02-27 Folding table
AT70896B (de) * 1913-06-05 1916-01-10 Emil Veit Zweiteiliger Beschlag für umlegbare Tischbeine.
GB428289A (en) * 1933-11-09 1935-05-10 Gertrude Vinegrad Improvements in collapsible tables and other furniture
US2657963A (en) * 1951-02-06 1953-11-03 Seng Co Folding leg structure
US3093095A (en) * 1961-09-21 1963-06-11 Howe Folding Furniture Inc Executive-type folding table
US3224390A (en) * 1963-09-17 1965-12-21 Charles A Calvin Folding leg table construction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US272909A (en) * 1883-02-27 Folding table
AT70896B (de) * 1913-06-05 1916-01-10 Emil Veit Zweiteiliger Beschlag für umlegbare Tischbeine.
GB428289A (en) * 1933-11-09 1935-05-10 Gertrude Vinegrad Improvements in collapsible tables and other furniture
US2657963A (en) * 1951-02-06 1953-11-03 Seng Co Folding leg structure
US3093095A (en) * 1961-09-21 1963-06-11 Howe Folding Furniture Inc Executive-type folding table
US3224390A (en) * 1963-09-17 1965-12-21 Charles A Calvin Folding leg table construction

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945328A (en) * 1974-11-13 1976-03-23 Krueger Metal Products, Inc. Hinge lock mechanism for folding table leg
DE3011270A1 (de) * 1980-03-24 1981-10-01 Mesax AG, 8600 Dübendorf, Zürich Vorrichtung, insbesondere behaelter, mit einem tragboden und daran angeordneten klappbeinen
US4444124A (en) * 1981-10-26 1984-04-24 Howe Furniture Corporation Foldable trestle type table
DE3229210C1 (de) * 1982-08-05 1984-04-26 Kusch & Co Sitzmöbelwerke KG, 5789 Hallenberg Klapptischbeschlag
US4561622A (en) * 1982-08-05 1985-12-31 Eberhard Heinzel Folding table catch
US5323713A (en) * 1992-07-29 1994-06-28 Northwest Metal Products, Inc. Locking mechanism for folding table legs
US5681034A (en) * 1994-05-28 1997-10-28 Wolfcraft Gmbh Foldable worktable
US5490467A (en) * 1994-12-23 1996-02-13 Howe Furniture Corporation Folding table mechanism
US5673633A (en) * 1995-05-31 1997-10-07 Pfister; Joel W. Table leg system
US5941181A (en) * 1997-04-18 1999-08-24 Krueger International, Inc. Folding table leg apparatus
US5913272A (en) * 1998-06-19 1999-06-22 Ditto Sales, Inc. Folding table release latch apparatus
US6394005B1 (en) 2000-07-28 2002-05-28 Valley Design Enterprises, Inc. Articulating locking mechanism
US20030164123A1 (en) * 2002-03-01 2003-09-04 Leng Lou-Hao Table with leg lock
US6920832B2 (en) * 2002-03-01 2005-07-26 Cosco Management, Inc. Table with leg lock
US20030200904A1 (en) * 2002-04-09 2003-10-30 Strong L. Curtis Pivotal connection of a table leg to a frame
US20040031422A1 (en) * 2002-08-16 2004-02-19 Hsin-Chuan Wong Control structure of supporting foot for collapsible furniture
US6772700B2 (en) * 2002-08-16 2004-08-10 Hsin-Chuan Wong Control structure of supporting foot for collapsible furniture
US20040201268A1 (en) * 2003-04-08 2004-10-14 Dick Liao Kneeling bench
US7063025B2 (en) * 2003-04-09 2006-06-20 Lifetime Products, Inc. Table with foldable legs
US20040255826A1 (en) * 2003-04-09 2004-12-23 Kent Ashby Table
US20050103958A1 (en) * 2003-11-13 2005-05-19 Chun-Hsien Tseng Foldable article of furniture
US7066099B2 (en) * 2003-11-13 2006-06-27 Chun-Hsien Tseng Foldable article of furniture
US20060021551A1 (en) * 2004-07-30 2006-02-02 Pleiman Brian R Table with folding leg
US20060191448A1 (en) * 2004-12-23 2006-08-31 Harry Chen Worktable
US7249563B2 (en) * 2004-12-23 2007-07-31 E - Make Co., Ltd. Mechanism for folding a table leg
US20110061573A1 (en) * 2006-07-21 2011-03-17 Meco Corporation Folding table and chair
US20110139042A1 (en) * 2008-08-11 2011-06-16 DSA International, Inc. Table with Pivotable Table Top
US8413593B2 (en) 2008-08-11 2013-04-09 DSA International, Inc. Table with pivotable table top
US20110005437A1 (en) * 2009-07-09 2011-01-13 Ching Chi Yih Industrial Co., Ltd. Collapsing device of a desk
US8413594B2 (en) 2010-08-18 2013-04-09 DSA International, Inc. Folding leg latch assembly
US20130269574A1 (en) * 2012-04-11 2013-10-17 Christopher Cooper Expandable and collapsible tables and related methods
US10506870B2 (en) * 2016-02-26 2019-12-17 Bcg Design Group Limited Table and table connector system
CN106690802A (zh) * 2016-12-21 2017-05-24 苍南中学 折叠桌
US11058215B2 (en) * 2019-09-30 2021-07-13 Nupur, LLC Product for holding items and method for making same
USD1024631S1 (en) 2020-05-13 2024-04-30 Napur, LLC Stand
USD996069S1 (en) 2021-03-30 2023-08-22 Nupur, LLC Stand
US20220395089A1 (en) * 2021-06-15 2022-12-15 Lifetime Products, Inc. Locking mechanism for a table leg assembly
RU213434U1 (ru) * 2022-07-18 2022-09-12 Александр Олегович Сокольвак Предмет складной мебели

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GB1258467A (enrdf_load_stackoverflow) 1971-12-30

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