US20050161984A1 - Folding table - Google Patents
Folding table Download PDFInfo
- Publication number
- US20050161984A1 US20050161984A1 US10/765,575 US76557504A US2005161984A1 US 20050161984 A1 US20050161984 A1 US 20050161984A1 US 76557504 A US76557504 A US 76557504A US 2005161984 A1 US2005161984 A1 US 2005161984A1
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- United States
- Prior art keywords
- folding
- linkage
- lock
- folding table
- support structure
- 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
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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
- A47B3/00—Folding or stowable tables
- A47B3/14—Foldable table and seat units
-
- 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
- A47B3/083—Folding or stowable tables with legs pivoted to top or underframe with foldable top leaves
- A47B3/087—Folding or stowable tables with legs pivoted to top or underframe with foldable top leaves with struts supporting the legs
Definitions
- the present invention relates to folding tables, and more particularly to folding tables having advantageous tabletop shapes and/or having lock assemblies that secure the folding tables in a storage position.
- This furniture normally includes, for example, tables, chairs, benches, and stools.
- Such furniture provides added utility if it is of the folding type, so as to require minimum storage space.
- Folding tables having accompanying stools or benches are well known to provide seating and table space while requiring a relatively small amount of storage space.
- Such folding tables generally fold along a centerline, and have benches or stools placed along both sides of the table. Examples of folding tables are shown in U.S. Pat. No. 2,771,937 to Wilson, U.S. Pat. No. 3,075,809 to Wilson, U.S. Pat. No.
- Prior art tables also required tools for initial setup of the lock and it was possible to circumvent installation of some lock systems. Therefore, a lock system is needed that is simple and easy for the end user to set up without requiring tools. Moreover, installation of a lock should be compulsory and not optional.
- the present invention addresses these and other problems associated with folding tables.
- the present invention is directed to a folding table with a locking mechanism that automatically locks the folding table in a preferred storage position.
- the folding table includes a pair of semi-oval shaped tabletop sections that fold along a folding axis defined by the straight edges of each semi-oval shaped tabletop section.
- the tabletop sections are attached to a support structure that includes a retractable substructure that supports a number of evenly spaced stools.
- the semi-oval tabletops have a length greater than their width and the stools are substantially evenly spaced along the tabletops.
- the foldable table has three noteworthy positions including a use position, a transport/storage position, generally referred to as a storage position, and a shipping position.
- the use position, or “first position,” is the position in which the tabletop sections and stools are in a plane substantially parallel with the ground.
- the storage position also known as the “second position” or “folded position,” represents an orientation wherein the bottom surfaces of the tabletop sections are substantially facing one another, but are not parallel to each other. Rather, in the storage position, the tabletop sections form an acute angle with respect to each other. The preferred angle represents a balance between space saving and stability (if the angle is too small, the folding table become increasingly susceptible of being tipped over).
- the shipping position, or “third position” is the most compact of the three positions. In the shipping position, the bottom surfaces of the tabletop sections face each other and are substantially parallel. This is the preferred position for shipping since saving space is essential, while having the ability to stand without support is generally not important during shipping.
- the present invention relates to a lock assembly that automatically engages and secures the folded table at a predefined preferred storage position. More specifically, once the folding table reaches the storage position, the lock assembly engages to prevent the folding table from over-folding and thereby becoming vertically unstable. In addition, once engaged, the lock assembly prevents the table from spontaneously unfolding. To unfold the table and deploy it for use, the operator must disengage the locking member, also referred to as the “latching member,” from the engagement member, and also referred to as the “catch” or “complementary member.” Preferably, disengagement of the locking member is accomplished by simply rotating a handle provided as part of the lock assembly.
- lock assembly does not make shipping the folding table more difficult. Although, when operational, the lock assembly does prevent the table from inadvertently being placed in the shipping position, the lock assembly can be temporally disengaged only for shipping purposes. Depressing a spring-loaded detent, also referred to as a “spring lock,” that is provided as part of the lock assembly, allows the tabletops to be folded to the shipping position. However, the location of the detent is not prominent, so that the detent is not inadvertently disengaged.
- FIG. 1 shows a perspective view of a folding table and seating structure in a use position according to the principles of the present invention
- FIG. 2 shows a front elevational view of the folding table shown in FIG. 1 ;
- FIG. 3 shows a top plan view of the folding table shown in FIG. 1 ;
- FIG. 4 shows an end elevational view of the folding table shown in FIG. 1 ;
- FIG. 5 shows a bottom plan view of the folding table shown in FIG. 1 ;
- FIG. 6 shows a sectional view of the lock assembly of the folding table shown in FIG. 1 ;
- FIG. 7 shows a enlarged fragmentary bottom plan view of the lock assembly of folding table shown in FIG. 1 ;
- FIG. 8 shows an enlarged fragmentary front elevation view of the folding table shown in FIG. 1 in a storage position with lock assembly engaged;
- FIG. 9 shows an enlarged fragmentary front elevation view of the folding table shown in FIG. 1 in a storage position with lock assembly disengaged;
- FIG. 10 shows an enlarged fragmentary front elevation view of the folding table shown in FIG. 1 in a shipping position
- FIG. 11 shows a diagrammatic view of the folding table shown in FIG. 1 in a shipping position
- FIG. 12 shows a top plan view of the folding table shown in FIG. 1 with table legs removed to accommodate wheel chairs.
- the folding table 10 includes a pair of opposed tabletop sections 20 with a foldable table supporting structure 30 .
- the foldable table support structure 30 includes a plurality of mounting rails 40 , that preferably mount to the underside of the tabletop sections 20 , a plurality of table legs 50 pivotally attached to the plurality of mounting rails 40 , and a storage lock assembly 60 that locks the table support structure 30 in the storage position when the mounting rails are brought into the storage position.
- folding linkage as used in this application collectively refers to the set of structural members of the table support structure 30 that are pivotally connected to other structural members including, for example, the table legs 50 discussed below.
- frame as used in this application refers to supporting members that are attached to the tabletops including, for example, the mounting rails 40 discussed below and numerous other support members and fasteners that are shown throughout the figures, but are not designated by specific reference numerals.
- the pair of opposed tabletops 20 include a first tabletop portion 22 on a first folding table assembly 12 and a second tabletop portion 24 on a second opposed folding table assembly 14 that together preferably forms a generally oval shape having a greater length than width.
- the first tabletop portion 22 includes a top surface 26 and a bottom surface 28 .
- the second tabletop 24 portion includes a top surface 25 and a bottom surface 27 .
- a plurality of mounting rails 40 are attached to the bottom surface 28 and 27 of the opposed tabletops 20 .
- the plurality of mounting rails 40 at least includes a first mounting rail 42 that attached parallel, but offset from, the longitudinal axis 41 of the tabletop sections 20 , and a second mounting rail 44 attached parallel and offset from the first mounting rail 42 on the opposite side of the longitudinal axis 41 .
- the mounting rails 40 define a number of table leg attachment locations 46 .
- the attachment locations 46 define a plurality of evenly spaced pairs of aligned through holes 47 that pivotally connect a plurality of table legs 50 . Though a foldable table 10 having six table legs 50 is shown, it should be appreciated that the number of table legs 50 can vary so long as the foldable table 10 includes at least two table legs 50 .
- table legs 50 include a first support leg portion 52 on a first side of the longitudinal axis 41 , a second support leg portion 54 on a second side of the longitudinal axis 41 , one or more struts 56 connected to the plurality of mounting rails 40 , at least one brace bar 58 connected to the support leg portions 52 and 54 , and a plurality of seat or stool supports 51 connected to the support leg portions 52 and 54 .
- Each support leg portion 52 and 54 is constructed to be vertical when the foldable table 10 is in the use position.
- the one or more struts 56 pivotally connect to the mounting rails 40 though one or more pairs of aligned holes 47 , at the attachment locations 46 of parallel mounted first and second mounting rails 40 .
- torsion springs 53 that are constructed to exert a torque between the first and second mounting rails 42 and 44 and the table legs 50 in a direction that facilitates folding the F table 10 , (i.e., moving the table 10 from the use position to the storage position.)
- Attached to one end of the seat supports 51 are stools 55 that are substantially evenly spaced along the opposed side of the folding table 10 so that a number of people may sit at the table 10 without encroaching upon one another's space. More specifically, the space between each stool 55 is wide enough so that there is sufficient room for passage between the stools 55 with no obstruction from the support frame structure 30 .
- the semi-oval tabletop sections 20 define a tabletop that allows a standard cafeteria tray to be positioned longitudinally in front of each person seated at the folding table 10 .
- Attached on the opposite ends of some of the seat supports 51 are caster wheels 57 . The caster wheels 57 support the folding table 10 when the folding table 10 is in the storage position and allows for easy transport thereof.
- one or more of the table legs 50 may be removed to provide additional spaces there between in order to accommodate access to the table via a wheel chair.
- the folding table support structure 30 includes a plurality of support linkage members 32 constructed to prevent the table legs from pivoting while the table is in the use position.
- the support linkage members 32 include a first support linkage 34 that is pivotally attached to table legs 50 of the first folding table assembly 12 of the support structure 30 and a second support linkage member 36 that is pivotally attached to table legs 50 of the second folding table assembly 14 of the support structure 30 .
- the support linkages 34 and 36 retract the table legs 50 so that the folding table 10 can be conveniently stored.
- the storage lock assembly 60 includes a locking member or latching member 62 , a locking catch, also known as an engagement member, a catch, or a complementary member, 64 , handles 66 and 67 , and a pivot 70 .
- the locking member 62 connects to the pivot 70 , which is pivotally connected to a pair of mounting rails 40 of the second folding table assembly 14 .
- the locking catch 64 is attached to a support linkage 34 of the first folding table assembly 12 .
- the locking member 62 includes a stop 68 and is attached to handles 66 and 67 that are on opposite sides of the longitudinal axis 41 .
- the stop 68 and the handles 66 and 67 are constructed to interfere with the bottom surface 27 of the second tabletop portion 24 to limit the range in which the pivot 70 can rotate. Limiting the range of rotation ensures that the locking member 62 stays in alignment with the lock catch 64 for automatic engagement when the folding table 10 is moved into the storage position.
- the handles 66 and 67 serve as structures that an operator can conveniently rotate to unlock the folding table 10 from its storage position.
- the locking member 62 includes a curved or angled first portion 65 for engaging the locking catch 64 and aligning itself with the locking catch 64 such that a locking portion otherwise know as a hook portion 63 automatically locks onto the locking catch 64 .
- the locking catch 64 includes a conventional bolt that is retained by the hook portion 63 .
- the pivot 70 includes a cross bar 72 that is housed within a sleeve 74 .
- the sleeve 74 pivotally connects to a pair of aligned though holes 47 in the first and second mounting rails 42 and 44 .
- the handles 66 and 67 are rigidly attached to the cross bar 72 and the locking member 62 is rigidly attached to the sleeve 74 .
- Housed within the cross bar is a spring lock, otherwise known as the “spring loaded detent,” 76 that engages both the cross bar 72 and the sleeve 74 and prevents relative motion there between.
- the handles 66 and 67 and the stop 68 of the locking member 62 together limits the rotational range of the pivot. As mentioned above, this feature is desired because it automatically aligns the locking member 62 relative to the locking catch 64 . More specifically the limited rotational range of the pivot ensure that the curved or angled portion 65 of the locking member contacts the locking catch when the first folding table assembly 12 and the second folding table assembly 14 are brought together.
- Determining the exact angle of the tabletops that define the preferred storage position involves balancing decreasing the stability of the folded table 10 in the storage position against decreasing the footprint (or effective storage area) of the foldable table 10 . Generally, the smaller the foot print of the folded table 10 in the storage position the easier it is for the table to topple over.
- the lock assembly 60 can be sized and attached to the support structure 30 , at a location that ensures that the folding table 10 will always be stored at the preferred angle.
- FIGS. 6-9 show a folding table 10 that includes a standard use lock 80 that automatically locks the table in the use position. For more specific information regarding the use lock 80 , refer to the references cited in the background.
- the lock assembly 60 that prevents the folding table 10 from over-folding be disengaged during shipping.
- the spring lock, or “spring loaded detent,” 76 serves such a function. When the spring lock 76 is disengaged, the sleeve 74 and the locking member 62 can rotate relative to the cross bar 72 . Therefore, disengaging the spring lock 76 ensures that the handles 66 and 67 do not limit the rotation of the locking member 62 .
- the locking member 67 can be rotated to a more vertical position thereby allowing the first tabletop portion 22 and the second tabletop portion 24 to be brought in closer proximity.
- the first assembly 12 and the second assembly 14 of the folding table 10 can be held together with a common strap 82 shown in FIG. 11 .
- the stools 51 are not shown in FIG. 11 , to further conserve space, the stools are preferably not attached to the folding table 10 during shipping.
Abstract
A folding table includes a pair of opposed semi-oval tabletops, a foldable linkage, and a storage position lock. The foldable linkages fold the tabletops about an axis from a use position to a storage position or a shipping position. In the storage position an automatically engaging lock assembly prevents the foldable table from unexpectedly moving to the shipping position or the use position.
Description
- 1. Field of the Invention
- The present invention relates to folding tables, and more particularly to folding tables having advantageous tabletop shapes and/or having lock assemblies that secure the folding tables in a storage position.
- 2. Prior Art
- In large multi-purpose rooms that are utilized at various times as dining rooms, meeting halls, dance areas and the like, it is often desirable that multi-purpose furniture be used. This furniture normally includes, for example, tables, chairs, benches, and stools. Such furniture provides added utility if it is of the folding type, so as to require minimum storage space. Folding tables having accompanying stools or benches are well known to provide seating and table space while requiring a relatively small amount of storage space. Such folding tables generally fold along a centerline, and have benches or stools placed along both sides of the table. Examples of folding tables are shown in U.S. Pat. No. 2,771,937 to Wilson, U.S. Pat. No. 3,075,809 to Wilson, U.S. Pat. No. 3,099,480 to Wilson, U.S. Pat. No. 4,133,271 to Carlson, U.S. Pat. No. 4,932,333 to Jensen, U.S. Pat. No. 6,065,802 to Bue, U.S. Pat. No. 6,254,178 to Bue, and U.S. Pat. No. 6,386,628 to Bue. All of the above-listed patents are assigned to Sico, Inc., the assignee of the present invention. Although such tables are successful in providing folding furniture, still further improvements are possible. A challenge specific to folding tables is maintaining satisfactory stability, especially when folded, while also minimizing the table footprint for storage.
- A number of prior art folding tables rely on torsion springs to keep the tables from unfolding (e.g., U.S. Pat. No. 4,932,333 to Jensen). A difficulty with relying on torsion bars to keep the table folded in a proper storage position is that the bars may not apply enough torque to ensure that the table does not spontaneously unfold, or they can apply too much torque and lead to over-folding. Designing a table with the correct number of torsion bars that apply the right about of torque is difficult. Moreover, some older systems require an additional step of manually locking the table in the storage position. Prior tables have not provided an uncomplicated lock system that allows simple and easy actuation and release. Prior art tables also required tools for initial setup of the lock and it was possible to circumvent installation of some lock systems. Therefore, a lock system is needed that is simple and easy for the end user to set up without requiring tools. Moreover, installation of a lock should be compulsory and not optional. The present invention addresses these and other problems associated with folding tables.
- The present invention is directed to a folding table with a locking mechanism that automatically locks the folding table in a preferred storage position. The folding table includes a pair of semi-oval shaped tabletop sections that fold along a folding axis defined by the straight edges of each semi-oval shaped tabletop section. The tabletop sections are attached to a support structure that includes a retractable substructure that supports a number of evenly spaced stools. In a preferred embodiment, the semi-oval tabletops have a length greater than their width and the stools are substantially evenly spaced along the tabletops.
- The foldable table has three noteworthy positions including a use position, a transport/storage position, generally referred to as a storage position, and a shipping position. The use position, or “first position,” is the position in which the tabletop sections and stools are in a plane substantially parallel with the ground. The storage position, also known as the “second position” or “folded position,” represents an orientation wherein the bottom surfaces of the tabletop sections are substantially facing one another, but are not parallel to each other. Rather, in the storage position, the tabletop sections form an acute angle with respect to each other. The preferred angle represents a balance between space saving and stability (if the angle is too small, the folding table become increasingly susceptible of being tipped over). The shipping position, or “third position” is the most compact of the three positions. In the shipping position, the bottom surfaces of the tabletop sections face each other and are substantially parallel. This is the preferred position for shipping since saving space is essential, while having the ability to stand without support is generally not important during shipping.
- In particular, the present invention relates to a lock assembly that automatically engages and secures the folded table at a predefined preferred storage position. More specifically, once the folding table reaches the storage position, the lock assembly engages to prevent the folding table from over-folding and thereby becoming vertically unstable. In addition, once engaged, the lock assembly prevents the table from spontaneously unfolding. To unfold the table and deploy it for use, the operator must disengage the locking member, also referred to as the “latching member,” from the engagement member, and also referred to as the “catch” or “complementary member.” Preferably, disengagement of the locking member is accomplished by simply rotating a handle provided as part of the lock assembly.
- Another feature of the lock assembly is that it does not make shipping the folding table more difficult. Although, when operational, the lock assembly does prevent the table from inadvertently being placed in the shipping position, the lock assembly can be temporally disengaged only for shipping purposes. Depressing a spring-loaded detent, also referred to as a “spring lock,” that is provided as part of the lock assembly, allows the tabletops to be folded to the shipping position. However, the location of the detent is not prominent, so that the detent is not inadvertently disengaged.
- These features of novelty and various other advantages that characterize the invention are pointed out with particularity in the claims annexed hereto and forming a part hereof. However, for a better understanding of the invention, its advantages, and the objects obtained by its use, reference should be made to the drawings which form a further part hereof, and to the accompanying descriptive matter, in which there is illustrated and described a preferred embodiment of the invention.
- Referring now to the drawings, wherein like reference letters and numerals indicate corresponding structure throughout the several views:
-
FIG. 1 shows a perspective view of a folding table and seating structure in a use position according to the principles of the present invention; -
FIG. 2 shows a front elevational view of the folding table shown inFIG. 1 ; -
FIG. 3 shows a top plan view of the folding table shown inFIG. 1 ; -
FIG. 4 shows an end elevational view of the folding table shown inFIG. 1 ; -
FIG. 5 shows a bottom plan view of the folding table shown inFIG. 1 ; -
FIG. 6 shows a sectional view of the lock assembly of the folding table shown inFIG. 1 ; -
FIG. 7 shows a enlarged fragmentary bottom plan view of the lock assembly of folding table shown inFIG. 1 ; -
FIG. 8 shows an enlarged fragmentary front elevation view of the folding table shown inFIG. 1 in a storage position with lock assembly engaged; -
FIG. 9 shows an enlarged fragmentary front elevation view of the folding table shown inFIG. 1 in a storage position with lock assembly disengaged; -
FIG. 10 shows an enlarged fragmentary front elevation view of the folding table shown inFIG. 1 in a shipping position; -
FIG. 11 shows a diagrammatic view of the folding table shown inFIG. 1 in a shipping position; and -
FIG. 12 shows a top plan view of the folding table shown inFIG. 1 with table legs removed to accommodate wheel chairs. - Referring now to the drawings, and in particular,
FIG. 1 a folding table 10 is shown in a use position. The folding table 10 includes a pair ofopposed tabletop sections 20 with a foldabletable supporting structure 30. The foldabletable support structure 30 includes a plurality of mountingrails 40, that preferably mount to the underside of thetabletop sections 20, a plurality oftable legs 50 pivotally attached to the plurality of mountingrails 40, and astorage lock assembly 60 that locks thetable support structure 30 in the storage position when the mounting rails are brought into the storage position. - It should be appreciated that the term “folding linkage” as used in this application collectively refers to the set of structural members of the
table support structure 30 that are pivotally connected to other structural members including, for example, thetable legs 50 discussed below. It should also be appreciated that the term “framework” as used in this application refers to supporting members that are attached to the tabletops including, for example, the mountingrails 40 discussed below and numerous other support members and fasteners that are shown throughout the figures, but are not designated by specific reference numerals. - Referring to
FIGS. 1, 3 , and 5, the pair ofopposed tabletops 20 include afirst tabletop portion 22 on a firstfolding table assembly 12 and asecond tabletop portion 24 on a second opposed foldingtable assembly 14 that together preferably forms a generally oval shape having a greater length than width. Thefirst tabletop portion 22 includes atop surface 26 and abottom surface 28. Likewise, thesecond tabletop 24 portion includes atop surface 25 and abottom surface 27. - A plurality of mounting
rails 40 are attached to thebottom surface tabletops 20. Preferably, the plurality of mountingrails 40 at least includes a first mounting rail 42 that attached parallel, but offset from, the longitudinal axis 41 of thetabletop sections 20, and a second mounting rail 44 attached parallel and offset from the first mounting rail 42 on the opposite side of the longitudinal axis 41. The mounting rails 40 define a number of tableleg attachment locations 46. Theattachment locations 46 define a plurality of evenly spaced pairs of aligned throughholes 47 that pivotally connect a plurality oftable legs 50. Though a foldable table 10 having sixtable legs 50 is shown, it should be appreciated that the number oftable legs 50 can vary so long as the foldable table 10 includes at least twotable legs 50. - Referring to
FIGS. 1, 2 , 4 and 5,table legs 50 include a firstsupport leg portion 52 on a first side of the longitudinal axis 41, a secondsupport leg portion 54 on a second side of the longitudinal axis 41, one ormore struts 56 connected to the plurality of mountingrails 40, at least onebrace bar 58 connected to thesupport leg portions support leg portions support leg portion more struts 56 pivotally connect to the mountingrails 40 though one or more pairs of alignedholes 47, at theattachment locations 46 of parallel mounted first and second mounting rails 40. Within thestruts 56 are torsion springs 53 that are constructed to exert a torque between the first and second mounting rails 42 and 44 and thetable legs 50 in a direction that facilitates folding the F table 10, (i.e., moving the table 10 from the use position to the storage position.) - Attached to one end of the seat supports 51 are
stools 55 that are substantially evenly spaced along the opposed side of the folding table 10 so that a number of people may sit at the table 10 without encroaching upon one another's space. More specifically, the space between eachstool 55 is wide enough so that there is sufficient room for passage between thestools 55 with no obstruction from thesupport frame structure 30. In addition, thesemi-oval tabletop sections 20 define a tabletop that allows a standard cafeteria tray to be positioned longitudinally in front of each person seated at the folding table 10. Attached on the opposite ends of some of the seat supports 51 arecaster wheels 57. Thecaster wheels 57 support the folding table 10 when the folding table 10 is in the storage position and allows for easy transport thereof. - Referring to
FIG. 12 , it is contemplated that one or more of thetable legs 50 may be removed to provide additional spaces there between in order to accommodate access to the table via a wheel chair. - Referring to
FIGS. 1, 2 , 5, 8, 9 and 10, the foldingtable support structure 30 includes a plurality ofsupport linkage members 32 constructed to prevent the table legs from pivoting while the table is in the use position. Thesupport linkage members 32 include afirst support linkage 34 that is pivotally attached to tablelegs 50 of the firstfolding table assembly 12 of thesupport structure 30 and a secondsupport linkage member 36 that is pivotally attached to tablelegs 50 of the secondfolding table assembly 14 of thesupport structure 30. When the folding table 10 is moved between the use position and the storage position (i.e., folded about a transverse axis 39), thesupport linkages table legs 50 so that the folding table 10 can be conveniently stored. - Referring to
FIGS. 6-9 , thestorage lock assembly 60 includes a locking member or latchingmember 62, a locking catch, also known as an engagement member, a catch, or a complementary member, 64, handles 66 and 67, and apivot 70. The lockingmember 62 connects to thepivot 70, which is pivotally connected to a pair of mountingrails 40 of the secondfolding table assembly 14. The lockingcatch 64 is attached to asupport linkage 34 of the firstfolding table assembly 12. The lockingmember 62 includes astop 68 and is attached tohandles 66 and 67 that are on opposite sides of the longitudinal axis 41. Thestop 68 and thehandles 66 and 67 are constructed to interfere with thebottom surface 27 of thesecond tabletop portion 24 to limit the range in which thepivot 70 can rotate. Limiting the range of rotation ensures that the lockingmember 62 stays in alignment with thelock catch 64 for automatic engagement when the folding table 10 is moved into the storage position. In addition to limiting the rotational range of the pivot, thehandles 66 and 67 serve as structures that an operator can conveniently rotate to unlock the folding table 10 from its storage position. - Preferably, the locking
member 62 includes a curved or angled first portion 65 for engaging the lockingcatch 64 and aligning itself with the lockingcatch 64 such that a locking portion otherwise know as ahook portion 63 automatically locks onto the lockingcatch 64. In the preferred embodiment the lockingcatch 64 includes a conventional bolt that is retained by thehook portion 63. - As shown in
FIGS. 6 and 7 , preferably, thepivot 70 includes across bar 72 that is housed within asleeve 74. Thesleeve 74 pivotally connects to a pair of aligned thoughholes 47 in the first and second mounting rails 42 and 44. Thehandles 66 and 67 are rigidly attached to thecross bar 72 and the lockingmember 62 is rigidly attached to thesleeve 74. Housed within the cross bar is a spring lock, otherwise known as the “spring loaded detent,” 76 that engages both thecross bar 72 and thesleeve 74 and prevents relative motion there between. As discussed above, thehandles 66 and 67 and thestop 68 of the lockingmember 62 together limits the rotational range of the pivot. As mentioned above, this feature is desired because it automatically aligns the lockingmember 62 relative to the lockingcatch 64. More specifically the limited rotational range of the pivot ensure that the curved or angled portion 65 of the locking member contacts the locking catch when the firstfolding table assembly 12 and the secondfolding table assembly 14 are brought together. - Determining the exact angle of the tabletops that define the preferred storage position involves balancing decreasing the stability of the folded table 10 in the storage position against decreasing the footprint (or effective storage area) of the foldable table 10. Generally, the smaller the foot print of the folded table 10 in the storage position the easier it is for the table to topple over. Once the preferred angle is chosen, the
lock assembly 60 can be sized and attached to thesupport structure 30, at a location that ensures that the folding table 10 will always be stored at the preferred angle. Note thatFIGS. 6-9 show a folding table 10 that includes astandard use lock 80 that automatically locks the table in the use position. For more specific information regarding theuse lock 80, refer to the references cited in the background. - Referring to
FIGS. 10 and 11 , in contrast to storage, during shipping the primary concern is decreasing the space that the folding table 10 occupies. Accordingly, it is preferred that thelock assembly 60 that prevents the folding table 10 from over-folding be disengaged during shipping. The spring lock, or “spring loaded detent,” 76 serves such a function. When thespring lock 76 is disengaged, thesleeve 74 and the lockingmember 62 can rotate relative to thecross bar 72. Therefore, disengaging thespring lock 76 ensures that thehandles 66 and 67 do not limit the rotation of the lockingmember 62. Accordingly, when thespring lock 76 is disengaged, the locking member 67 can be rotated to a more vertical position thereby allowing thefirst tabletop portion 22 and thesecond tabletop portion 24 to be brought in closer proximity. During shipping thefirst assembly 12 and thesecond assembly 14 of the folding table 10 can be held together with acommon strap 82 shown inFIG. 11 . Note that thestools 51 are not shown inFIG. 11 , to further conserve space, the stools are preferably not attached to the folding table 10 during shipping. - It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (38)
1. A folding table comprising:
a pair of table tops folding between a use position and a storage position;
a framework;
a folding linkage connecting the table tops to the framework and folding the table between the use position and the storage position;
a selectively releasable lock for the folding linkage automatically engaging at the storage position.
2. A folding table according to claim 1 , wherein the selectively releasable lock automatically positions the table at a preferred storage position.
3. A folding table according to claim 1 , wherein the lock comprises a handle and a latch rotatable mounted to a first one of the tabletops.
4. A folding table according to claim 1 , wherein the lock comprises a latch rotatably mounted to a first one of the tabletops.
5. A folding table according to claim 4 , wherein the lock comprises an engagement member mounted to a second one of the tabletops and engaging the latch at the storage position.
6. A folding table according to claim 4 , wherein the table folds to an initial shipping position wherein the latch is freely rotatable relative to the handle.
7. A folding table according to claim 6 , wherein the lock further comprises a pivot member having the handle mounted thereto and a sleeve having the latch mounted thereto, and wherein the pivot member and sleeve are concentric and released during shipping and connected for use.
8. A folding table according to claim 7 , wherein the lock comprises a spring loaded detent connecting the pivot member and the sleeve.
9. A linkage for a folding table having first and second tabletops and folding between a use position and a storage position, comprising:
a first linkage assembly adapted to mount to an underside of the first tabletop;
a second linkage assembly adapted to mount to an underside of the second tabletop, wherein the first and second linkage assemblies engage and foldably connect the first and second tabletops;
a lock assembly adapted to mount to an underside of the first tabletop including at least one handle connected to a latching member, and an engagement member mounted to the second linkage and adapted to engage the latching member; wherein the handle selectively moves the latching member between an engaged position and a disengaged position, and wherein the latching member automatically engages the engagement member and locks the linkage upon folding the linkage to the storage position.
10. A linkage according to claim 7 , wherein the handle and latching member are rotatably mounted.
11. A linkage according to claim 7 , wherein the lock assembly comprises two handles.
12. A linkage according to claim 7 , wherein linkage defines a folding axis and wherein the handles are mounted opposite one another axially outward from the linkage.
13. A linkage according to claim 7 , wherein the latching member comprises a hook portion.
14. A linkage according to claim 7 , wherein the latching member and handle automatically position the lock assembly and limit motion of the linkage assemblies.
15. A lock for a folding linkage comprising:
a locking member mounted on a pivot on a first portion of the folding linkage;
a complementary member mounted on a second portion of the folding linkage; and
a handle mounted to the pivot, wherein the handle and the locking member engage the first portion of the folding linkage and limit pivoting range of the lock.
16. A lock for a folding table having folding tabletops and a folding linkage, comprising:
a locking member mounted on a pivot on a first portion of the folding linkage;
a complementary member mounted on a second portion of the folding linkage;
a handle mounted to the pivot, wherein the handle and the locking member engage one of the tabletops and limit the pivoting range of the lock.
17. A method of locking a folding table having a folding linkage with a first assembly and a second assembly, a first tabletop and a second tabletop folding between a storage position wherein the first tabletop and the second tabletop are substantially opposed a use position, and a lock assembly having a locking member mounted to a pivot and a handle mounted to the pivot, and a complementary engagement member, the method comprising:
rotating the handle;
folding the first and second tabletops to the second position such that the locking member automatically engages and retains the engagement member and positions the first and second tabletops for storage.
18. A method according to claim 15 , further comprising folding the table to a shipping position prior to folding the table to a storage position, comprising disengaging the handle and locking member from one another, moving the locking member to a non-engaging position, and moving the tabletops to a shipping position.
19. A method according to claim 16 , further comprising engaging the handle and locking member, and moving the tabletops from the shipping position.
20. A folding table comprising:
first and second tabletops folding along a folding axis, wherein the tabletops define a generally oval table having a dimension transverse to the folding axis greater than a dimension along the folding axis;
a plurality of seating devices spaced evenly along a portion of the table periphery.
21. A folding table according to claim 18 , wherein the spacing accommodates a cafeteria tray for each seat.
22. A folding table according to claim 18 , wherein the seating devices define a space for accommodating a wheelchair.
23. A support structure for a folding table having tabletops folding between a use position and a storage position, comprising:
a plurality of mounting rails constructed for attachment to the tabletops;
a plurality of table legs pivotally attached to the mounting rails;
a storage lock assembly that locks the table support structure in the storage position when the mounting rails are brought into the storage position.
24. A folding table support structure according to claim 21 , further comprising a use lock assembly that locks the support structure in the use position when the mounting rails are brought into the use position.
25. A folding table support structure according to claim 21 , further comprising a plurality of support linkage members constructed to prevent the table legs from pivoting while the folding table support structure is in the use position, wherein a first support linkage member is attached to table legs of a first folding table assembly of a support structure and a second support linkage member is attached to table legs of a second folding table assembly of a support structure.
26. A folding table support structure according to claim 23 , wherein the storage lock assembly includes a lock catch that is attached to the first support linkage member and a locking member that is pivotally attached to second foldable table assembly of a support structure.
27. A folding table support structure according to claim 21 , wherein the tabletops comprising a generally oval table, wherein the first tabletop is attached to a first set of mounting rails and the second tabletop is attached to a second set of mounting rails.
28. A folding table support structure according to claim 21 , wherein at least one table leg is constructed to support a least one seat.
29. A folding table support structure according to claim 25 , further comprising a plurality of seats evenly spaced around the tabletop.
30. A folding table support structure according to claim 27 , wherein at least one of the seats is removable to accommodate a wheel chair.
31. A folding table support structure according to claim 21 , further comprising a torsion spring that applies torque between a mounting rail and a table leg in a direction that facilitates the folding of the support structure.
32. A folding table storage lock assembly comprising:
a pivot attached to a first folding table assembly;
a lock catch attached to a second folding table assembly;
a locking member attached to the pivot, the locking member including a locking portion constructed to secure the locking member to the lock catch, an oblique portion constructed to slidably engage the lock catch and align the locking member with the lock catch; and
a handle attached to the pivot for unlocking the locking member from the lock catch.
33. A folding table storage lock assembly according to claim 30 , further comprising a stop attached to the locking member constructed to engage a portion of the table support structure for limiting the pivoting range of the locking member.
34. A folding table storage lock assembly according to claim 30 , wherein the pivot includes a crossbar that is positioned though a pair of aligned through holes defined in a set of mounting rails.
35. A folding table storage lock assembly according to claim 32 , wherein the cross bar is housed within a sleeve that is positioned through a pair of aligned through holes defined in a set of mounting rails, wherein the sleeve pivotally engages the mounting rails, wherein a spring lock releasably attaches the crossbar to the sleeve.
36. A folding table storage lock assembly according to claim 30 , wherein the handle is constructed to engage a portion of the table support structure for limiting the pivoting range of the locking member.
37. A method of locking a folding table in a storage position, the folding table having a lock device, comprising:
positioning a foldable table in a storage position, wherein the lock device automatically limits folding and positions the table at the storage position, and wherein the lock device automatically engages.
38. A method of unlocking a folding table from a storage position, the folding table having a support structure and a storage lock assembly with a handle mounted to a locking member attached to a first portion of the folding table, the locking member selectively engaging a lock catch on a second portion of the folding table support structure, comprising: pivoting the handle, thereby pivoting the locking member and disengaging the catch to release the folding support structure.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/765,575 US20050161984A1 (en) | 2004-01-27 | 2004-01-27 | Folding table |
PCT/US2005/001639 WO2005072561A1 (en) | 2004-01-27 | 2005-01-18 | Folding table |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/765,575 US20050161984A1 (en) | 2004-01-27 | 2004-01-27 | Folding table |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050161984A1 true US20050161984A1 (en) | 2005-07-28 |
Family
ID=34795506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/765,575 Abandoned US20050161984A1 (en) | 2004-01-27 | 2004-01-27 | Folding table |
Country Status (2)
Country | Link |
---|---|
US (1) | US20050161984A1 (en) |
WO (1) | WO2005072561A1 (en) |
Cited By (20)
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US20080116724A1 (en) * | 2006-11-17 | 2008-05-22 | Sico Incorporated | Folding table and seating system |
EP2736377A4 (en) * | 2011-07-29 | 2015-08-19 | Lifetime Prod Inc | Folding table with locking mechanism |
US20160010376A1 (en) * | 2014-07-10 | 2016-01-14 | Biofit Engineered Products | Foldable table |
US20160316904A1 (en) * | 2015-05-01 | 2016-11-03 | Knoll, Inc. | Article of furniture having a folding mechanism |
USD802945S1 (en) * | 2016-03-01 | 2017-11-21 | Amtab Manufacturing Corporation | Mobile folding table |
USD832604S1 (en) * | 2017-07-26 | 2018-11-06 | Amtab Manufacturing Corporation | Table with stool seating |
CN110623031A (en) * | 2019-10-18 | 2019-12-31 | 无锡嘉鼎机械科技有限公司 | Mousse cake production line and processing method thereof |
USD893932S1 (en) * | 2017-09-29 | 2020-08-25 | Amtab Manufacturing Corporation | Stool |
CN111685481A (en) * | 2020-06-23 | 2020-09-22 | 博洛尼家居用品湖北有限公司 | Telescopic folding table and stool assembly |
USD908376S1 (en) * | 2019-09-20 | 2021-01-26 | Kyung Hee Han | Table |
USD909778S1 (en) * | 2019-08-29 | 2021-02-09 | Amtab Manufacturing Corporation | Table with attached stools |
USD909777S1 (en) * | 2019-08-29 | 2021-02-09 | Amtab Manufacturing Corporation | Table with attached stools |
USD909779S1 (en) * | 2019-08-29 | 2021-02-09 | Amtab Manufacturing Corporation | Table with attached stools |
USD909780S1 (en) * | 2019-08-29 | 2021-02-09 | Amtab Manufacturing Corporation | Table with attached stools |
USD909775S1 (en) * | 2019-08-29 | 2021-02-09 | Amtab Manufacturing Corporation | Table with attached stools |
USD909776S1 (en) * | 2019-08-29 | 2021-02-09 | Amtab Manufacturing Corporation | Table with attached stools |
USD926481S1 (en) * | 2020-01-27 | 2021-08-03 | NPS Public Furniture Corp. | Table |
USD926483S1 (en) * | 2020-01-27 | 2021-08-03 | NPS Public Furniture Corp. | Table |
US20220322818A1 (en) * | 2021-04-08 | 2022-10-13 | NPS Public Furniture Corp. | Folding table and associated folding mechanisms |
KR102486656B1 (en) * | 2022-07-15 | 2023-01-11 | 주식회사 라이브러리엔 | Center folding table |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102578803B (en) * | 2012-02-25 | 2014-07-23 | 陕西理工学院 | Automatic foldable table |
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Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080116724A1 (en) * | 2006-11-17 | 2008-05-22 | Sico Incorporated | Folding table and seating system |
EP2736377A4 (en) * | 2011-07-29 | 2015-08-19 | Lifetime Prod Inc | Folding table with locking mechanism |
US20160010376A1 (en) * | 2014-07-10 | 2016-01-14 | Biofit Engineered Products | Foldable table |
US20160316904A1 (en) * | 2015-05-01 | 2016-11-03 | Knoll, Inc. | Article of furniture having a folding mechanism |
US9629451B2 (en) * | 2015-05-01 | 2017-04-25 | Knoll, Inc. | Article of furniture having a folding mechanism |
USD802945S1 (en) * | 2016-03-01 | 2017-11-21 | Amtab Manufacturing Corporation | Mobile folding table |
USD832604S1 (en) * | 2017-07-26 | 2018-11-06 | Amtab Manufacturing Corporation | Table with stool seating |
USRE48884E1 (en) * | 2017-07-26 | 2022-01-11 | Amtab Manufacturing Corporation | Table |
USD893932S1 (en) * | 2017-09-29 | 2020-08-25 | Amtab Manufacturing Corporation | Stool |
USD909775S1 (en) * | 2019-08-29 | 2021-02-09 | Amtab Manufacturing Corporation | Table with attached stools |
USD909776S1 (en) * | 2019-08-29 | 2021-02-09 | Amtab Manufacturing Corporation | Table with attached stools |
USD909778S1 (en) * | 2019-08-29 | 2021-02-09 | Amtab Manufacturing Corporation | Table with attached stools |
USD909777S1 (en) * | 2019-08-29 | 2021-02-09 | Amtab Manufacturing Corporation | Table with attached stools |
USD909779S1 (en) * | 2019-08-29 | 2021-02-09 | Amtab Manufacturing Corporation | Table with attached stools |
USD909780S1 (en) * | 2019-08-29 | 2021-02-09 | Amtab Manufacturing Corporation | Table with attached stools |
USD908376S1 (en) * | 2019-09-20 | 2021-01-26 | Kyung Hee Han | Table |
CN110623031A (en) * | 2019-10-18 | 2019-12-31 | 无锡嘉鼎机械科技有限公司 | Mousse cake production line and processing method thereof |
USD926481S1 (en) * | 2020-01-27 | 2021-08-03 | NPS Public Furniture Corp. | Table |
USD926483S1 (en) * | 2020-01-27 | 2021-08-03 | NPS Public Furniture Corp. | Table |
CN111685481A (en) * | 2020-06-23 | 2020-09-22 | 博洛尼家居用品湖北有限公司 | Telescopic folding table and stool assembly |
US20220322818A1 (en) * | 2021-04-08 | 2022-10-13 | NPS Public Furniture Corp. | Folding table and associated folding mechanisms |
US11583069B2 (en) * | 2021-04-08 | 2023-02-21 | NPS Public Furniture Corp. | Folding table and associated folding mechanisms |
KR102486656B1 (en) * | 2022-07-15 | 2023-01-11 | 주식회사 라이브러리엔 | Center folding table |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SICO INCORPORATED, MINNESOTA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BUE, RICHARD C.;ELLIOTT, JOHN M.;BOTTS, ROLLIN D.;REEL/FRAME:015675/0370;SIGNING DATES FROM 20040728 TO 20040729 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |