1. Field of the Invention
This invention relates to portable tables, such as card tables, camping tables, picnic tables and portable display tables that may be folded and compacted for storage or transportability. More particularly, the invention relates to a portable table that can be folded into a self-contained package that can be easily carried and stored in compact storage compartments such as those found in recreational vehicles, airplanes or small living areas.
2. Prior Art
The most common types of portable or temporary tables are generally known as card tables. The legs of a card table and similar folding leg tables generally hinge or connect to the underside of the table in a manner allowing the legs to pivot inward along one respective edge of the table to reduce the table to a substantially flat configuration essentially defined by the table top. Numerous other commonly known folding table leg configurations have been devised and used for years. Some table designs, such as the familiar ping pong table for example, combine a folding table top with folding legs. A few less commonly known tables also employ folding legs. For instance, U.S. Pat. No. 2,565,187 discloses a version of a collapsing table wherein the folding leg members pivotally connect to the table top and a base. The folding leg then allows the table to collapse vertically. U.S. Pat. No. 3,000,683 discloses a collapsible typing table having legs that fold up into a carry box for a typewriter. U.S. Pat. No. 4,389,946 discloses a stool or table of similar workings. And U.S. Pat. No. 5,535,683 discloses a carrying case convertible to a table with folding legs.
Most folding leg tables include some form of moveable or collapsible brace such as a folding scissor brace to help stabilize the table leg. The most compact portable table would require the folding of both the table top and folding or telescoping the table legs, but such a configuration poses some engineering design and stability problems, as well as problems with ease of set up.
It is therefore an object of this invention is to provide an article of furniture that may be easily converted from a compact portable state to a stable, sturdy table, bench or chair by simply raising the top and allowing the leg assembly to fall into position or where the top is foldable, by opening the top and allowing the leg assembly to fall into position.
It is also an object of this invention to provide a folding portable table or bench with foldable legs and a top that compacts with the folded legs enclosed within the side frame of the top.
Another object of this invention is to provide a folding portable table or bench which includes a top portion, folding legs and a base unit where the folding legs are pivotally attached or hinged at one end to the underside of the top and the at the other end hinged to the opposing surface of the base unit.
Furthermore it is an object of this invention to provide a folding portable table or bench with a top which includes a framework around the underside thereof, folding table legs, and a base unit wherein in the folded compact state the folded legs and base unit are enclosed by the perimeter frame of the top framework in a manner resembling a carry case or suitcase.
It is also an object of this invention to provide a collapsible table or bench with folding legs and a base that, when folded, are contained within a carry case-like enclosure formed by the top and frame, wherein the interior of the enclosure provides storage space for accessories such as a table cover, and wherein the case may be equipped with carry handles and closure latches.
Finally it is an object of this invention to provide a folding portable table stool or bench, display gaming table, outdoor table or similar furniture that includes a table top, foldable legs, a base unit, and means of hinging and bracing the legs with respect to each section of each leg, the top and base unit.
Briefly, a presently preferred embodiment of the present invention includes a top member forming a generally planar top support surface, a bottom member forming a base, and a plurality of foldable leg assemblies. Each leg assembly includes a set of at least two elongated leg sections pivotally attached together at adjacent ends by a hinge allowing the leg sections to be rotated between a folded configuration and an extended configuration. Each of the hinges has a first part attached to one of the leg sections and a second part attached to the other one of the leg sections. The first and second parts are pivotally secured together and have associated therewith a spring loaded detent for lockingly engaging detent receiving apertures formed in the first and second parts when the leg assembly is in its extended configuration. One end of each leg assembly is pivotally attached to the top member and an opposing end of each leg assembly pivotally attached to the base member such that the leg assemblies allow the top member to be collapsed from a deployed position remote from the bottom member to a retracted position proximate the bottom member.
Among the advantages of the present invention is that it provides a self contained, fully functional table seating unit that can be easily transported and/or stored without the use of any additional container or housing.
Another advantage of the present invention is that it provides a compact table or bench assembly that can be unpacked by merely lifting the top up from the base until the leg assemblies have been fully extended.
These and other objects and advantages of the present invention will no doubt become apparent to those skilled in the art after having read the following detailed description of the several embodiments illustrated in the several figures of the drawing.
a through 3d are four perspective views of the table in various stages of collapsing and folding. A cut away section in
a and 4b show one alternative configuration of a folding leg in the folded and extended configurations;
a is a perspective view showing an alternative embodiment of the table of the present invention including cylindrically tubular bi-folding legs;
b and 5c illustrate slotted cylindrical and frusto-conical inserts for placement between the legs shown in
d is a side elevation of the table of
a and 6b are a perspective views of a leg assembly with an alternative means of hinging and bracing the table leg at various pivoted positions;
a and 7b are perspective views showing details of another alternative embodiment of the invention;
a,
8
b and 8c demonstrate a method of hinging and locking leg sections; and
5
a is a perspective view showing an alternative embodiment of a hinging mechanism in accordance with the present invention;
As shown in
Limit A represents the open state limit (
Limit B represents the closed state where all four edges of frames 14 and 15 lay against each other in an opposing manner (
Obviously, in the closed state (Limit B) the frames and top sheets of material form an encasement whereas in the open state (Limit A) the two top sections form a substantially flat table top. In
Referring now to
Focusing now on
As will be discussed below, various well known hinging and bracing methods with leg sections to form bent table legs, or permit various degrees of bending to place the table at various heights. With respect to the first embodiment, it should be further noted that leg sections 23 and 24 likewise need not be of the same length and the base unit assembly 20 and 21 could be an amount smaller in size compared to top sections 10 and 11 such that the legs sections 23 and 24 slope or bend inward when the table is fully erected. Regarding the direction that the legs fold and the configuration of the legs, the straightness of the two sections, and the cross sectional configuration of the leg sections, numerous other configurations are contemplated that fall within the scope and spirit of this invention.
As to the leg sections 23 and 24, we see in
In FIG, 3d a retractable handle is shown at 54 that may be conveniently used to carry the table assembly when it is in its closed or compacted configuration and is held in the configuration by recessed latches 55. Any suitable form of latch and carry handle may be used on any of the several embodiments disclosed herein.
a illustrates an alternative embodiment of the invention with a variation in the configuration of the legs and associated folding and hinging method. This embodiment erects into a table resembling a pedestal table. In
Leg sections with a round cross section are used to further demonstrate variations of the invention. One unique feature of this configuration shown in
If slotted tracks 39′ are not used to allow the upper ends of the legs to slide inwardly as the table is transitioned from its closed or compacted configuration to its open or extended configuration, and the upper leg ends are hingedly attached at a fixed position, it may be necessary to provide a frusto-conical spacer 59 or spreading mechanism as suggested in
To collapse the table, the legs must first be extended (forcing the top sections and base unit apart) then caused to pivot outward at the base unit. In addition, the upper leg end must be freed to move outwardly toward the corresponding table corner.
In
Also shown in
a and 7b respectively illustrate perspective views showing details of another alternative embodiment of the invention from upper and lower angles. This embodiment is particular suited for manufacture from any of a variety of materials including wood, plastics and metals. As in previous embodiments it includes folding top surface forming members 11 and 12, folding base forming members 20 and 21, and a plurality of folding leg members 24. The top members and base members are hingedly joined together by hinges 13 and 22 respectively. The legs in this embodiment differ from the previous embodiments in that they are each comprised of four elongated elements 60-63. The upper ends of elements 60 and 61 are hingedly attached to the bottom of a top member by suitable hinges 65 while the lower ends thereof are pivotally connected to the upper ends of elements 62 and 63 by pivot pins 66. The lower ends of elements 62 and 63 are pivotally connected to a base member by a pivot pin 67. As will be appreciated, the table can be collapsed by folding it such that as the top members move toward the base, the base member folds into a nesting relationship with the lower leg elements 62 and 63 which in turn fold into a similar relationship with the upper leg elements 60 and 61 as the latter elements fold into place against the bottom surface of a top member. With the table so collapsed, the assembly can be folded into its compacted configuration by rotating the top members about the hinges 13 and the base members about the hinges 22.
This table design can easily be manufactured using solid wood on extruded tubular plastic or metal stock for the legs, top frame and base, and using sheet material to form the top surface. The several parts can be joined together as depicted using readily available hinges and pivot pin devices.
a-8c demonstrates another alternative method of hinging and locking the table leg sections. Experimental models of the table have shown that a locking mechanism in the hinged connection between the table leg sections is all that is needed to stabilize and secure the table in its open position. As shown in these figures, the leg sections 46 and 47 and respective hinge plates 48 and 49 are pivotally connected by rivets 50. Aperture 51 in plate 49 and aperture 52 in plate 48 (
Referring now to
In
This embodiment also differs from the previous embodiment in that the leg assemblies 104 on one side of the bench are positioned on the corners at the ends of the base member 102, and the leg assemblies 105 on the opposite side of the bench are positioned substantially inboard of the ends of the base member. In this case, the lengths of the folded leg assemblies are such that they extend at an angle across bottom of the top member and nest within the subcavities 112 and 116 at opposite ends of the top member. As suggested by the dashed lines 104′ and 105′ Note that, as perhaps best shown in
The invention herein disclosed may be made of any suitable material (such as plastic, aluminum, steel, wood, etc.) and may be utilized in many ways (card table, display, desk, stool, outdoor table, etc.). Moreover, even though described above as including discrete hinge devices, it is contemplated that the table assembly could be fabricated by injection molding with at least some of the hingedly attached component parts joined together by integrally molded “living hinges.”
Although the present invention has been described in terms of several alternative embodiments, it is anticipated that other alterations and modifications will become apparent to those skilled in the art after having read the above disclosure. It is therefore intended that such disclosure be considered illustrative and not limiting, and that the appended claims be interpreted to include all such alterations, modifications and embodiments as fall within the true spirit and scope of the invention.
The present application is a continuation-in-part of U.S. patent application Ser. No. 10/267,182 filed Oct. 8, 2002 entitled COLLAPSIBLE PORTABLE FOLDING TABLE WITH FOLDING LEGS, and is related to and claims priority from U.S. Provisional Application Ser. No. 60/328,126, filed Oct. 9, 2001, and entitled COLLAPSIBLE PORTABLE FOLDING TABLE WITH FOLDING LEGS, the entire applications being expressly incorporated herein by reference.
Number | Date | Country | |
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Parent | 10267182 | Oct 2002 | US |
Child | 10914869 | Aug 2004 | US |