CA2755009A1

CA2755009A1 - Expandable table

Info

Publication number: CA2755009A1
Application number: CA2755009A
Authority: CA
Inventors: Jeffrey W. Palese
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-31
Filing date: 2011-10-13
Publication date: 2012-11-30

Abstract

An expandable table that has a frame, at least one leg supporting the frame, first and second top portions movably connected or interconnected to the frame, an intermediate top portion movably connected or interconnected to the frame, and a movement mechanism connected or interconnected to the frame. The movement mechanism is configured to cause the first and second top portions to move along a longitudinal axis of the frame.
The movement mechanism is also configured to cause the intermediate top portion to move normal to said longitudinal axis of a plane of movement of said first and second top portions.

Description

EXPANDABLE TABLE

The present invention is directed to furniture, and more particularly to tables that can be expanded in length, and even more particularly to expandable patio and/or dining furniture.
Although the present invention is particularly directed to tables, it can be appreciated that the invention can be used in additional applications (e.g., expandable platforms, expandable counter tops, expandable desks, expandable beds, expandable trays, expandable carts, etc.).
BACKGROUND OF THE INVENTION
Expandable tables are well known in the art. Examples of such tables are disclosed in US
Patent Nos. 7,201,108; 6,742,461; 6,729,243; 6,715,429; 6,698,363; 6,666,151;
6,629,504;
6,443,074; 5,735,220; 4,878,439; 4,815,393; 4,494,466; 4,475,464; 3,033,629;
1,937,250;
1,778,666; 1,720,590; Des. 326,025; Des. 286,592; and EP 1 371 305 and EP 0 187 922 and JP
06-197814, all of which are incorporated herein by reference.
Prior configurations of expandable tables required the table leaves to be inserted at the ends of the table and/or between two separated portions of the table. For traditional expandable tables, the table leaves were generally stored at some location remote to the table or were folded under or stored under the table top. As such, the extra table leaf had to be moved and/or lifted by a user when inserting and removing the leaf in the table. Such moving and lifting can be inconvenient and difficult for many users. Many types of patio tables include an umbrella opening for receiving an umbrella pole. When a leaf is inserted or removed from such types of tables, the umbrella traditionally must be removed from the table and then reinserted in the table after the expansion leaf has been inserted or removed. The removal and reinsertion of the umbrella can be very inconvenient and difficult for many users.
In view of the current state of expandable tables, there is a need for an expandable table that makes it simple to expand and contract the table. For expandable tables that are used with umbrellas, there is a need for an expandable table that can be expanded and contracted without having to remove the umbrella.

SUMMARY OF THE INVENTION
The present invention is directed to tables that can be expanded and contracted in length, I

and even more particularly to expandable patio and/or dining furniture. The table of the present invention includes a frame, one or more legs, a first top portion and a second top portion. In certain non-limiting configurations of the expandable table of the present invention, the expandable table can also optionally include an intermediate top portion. The first and second top portions are designed to be movable on the frame. When the expandable table only includes first and second top portions, one of the top portions is designed to move at least partially under the other top portion when the table is in the non-expanded position. When the expandable table includes an intermediate top portion, the intermediate top portion is designed to be positioned between the first and second top portions when the table is in the expanded position. The number of legs used to support the frame is non-limiting. The shape and size of the frame, legs, first and second top portions and intermediate top portion, when used, are non-limiting. The materials used to form the frame, legs, first and second top portions and intermediate top portion, when used, are also non-limiting.
In one non-limiting aspect of the present invention, when the expandable table includes first and second top portions and an intermediate top portion, the first and second top portions of the expandable both have an inner edge wherein the inner edges are positioned next to or closely adjacent to one another when the table is in the unexpanded position. The intermediate top portion has two outer edges that are positioned next to or closely adjacent to the inner edges of the first and second top portions when the table is in the expanded position.
At least one of the first and second top portions, and typically both the first and second top portions, are designed to move toward and away from one another along the longitudinal axis of the frame when the first and second top portions are moved between the expanded and unexpanded positions. The intermediate top portion is designed to move upwardly and downwardly or in a plane that is normal to the longitudinal axis of the frame. When the first and second top portions are moved apart a sufficient distance, the intermediate top portion can be raised to form part of the top surface of the table. Generally, the intermediate top portion is raised so that the top surface of the intermediate top portion lies in the same or substantially the same plane as the plane of the top surfaces of the first and second top portions; however, this is not required. Once the intermediate top portion is raised from its stowed position, the first and/or second top portions can be moved toward the raised intermediate top portion until the two outer edges of the intermediate top portion are positioned next to or closely adjacent to the inner edges of the first

2 and second top portions. When the table is to be reconfigured to the unexpanded position, the intermediate top portion is moved downwardly to the stowed position and the first and/or second top portions are moved together until the inner edges of the first and second top portions are positioned next to or closely adjacent to one another. When the table is in the unexpanded position, the intermediate top portion is positioned and stowed below the first and second top portions. This novel configuration and arrangement for the intermediate top portion enables the intermediate top portion to be moved upwardly and downwardly when configuring the table between the expanded and unexpanded positions. Generally, the intermediate top portion is connected or interconnected to the frame to enable the intermediate top portion to be moved upwardly and downwardly. Generally, the intermediate top portion is designed to not be removed from the frame when configuring the table between the expanded and unexpanded positions; however, this is not required.
In still another non-limiting aspect of the invention, when the expandable table includes first and second top portions and an intermediate top portion, the frame of the table includes a movement mechanism that enables the first and second top portions to move (e.g., slide mechanism, roller mechanism, ball bearing mechanism, etc.) relative to the top of the frame.
Various types of railing systems can be used to enable such movement of the first and second top portions relative to the frame. In one non-limiting embodiment of the invention, the movement mechanism does not include ball bearings; however, this is not required. In another and/or alternative non-limiting embodiment of the invention, the movement mechanism includes a rail system that allows rail sections to slide or move relative to one another without the use of ball bearings; however, this is not required. In still another and/or alternative non-limiting embodiment of the invention, the movement mechanism includes multiple rail systems; however, this is not required. In yet another and/or alternative non-limiting embodiment of the invention, the movement mechanism is designed to simultaneously cause both the first and second top portions to move together when the first and second top portions are moved between the expanded and unexpanded positions; however, this is not required. In one non-limiting design, the movement mechanism is designed to simultaneously cause both the first and second top portions to move together in opposite directions and in substantially the same amounts and at the same speed when the first and second top portions are moved between the expanded and unexpanded positions; however, this is not required. In such an arrangement, the first and

3 second top portions move a similar distance away from one another when the first and second top portions are moved to the full expanded position and move a similar distance toward one another when the first and second top portions are moved to the full unexpanded position. Many different arrangements can be used to cause the movement of both the first and second top portions when such top portions are moved between the expanded and unexpanded positions.
In yet another non-limiting aspect of the invention, when the expandable table includes first and second top portions and an intermediate top portion, the frame of the table includes a movement mechanism that enables the intermediate top portion to move upwardly to a full upward position and downward to the stowed position as the first and second top portions are moved between the expanded and unexpanded positions; however, this is not required. In one non-limiting embodiment of the invention, the movement mechanism allows for manual lifting and/or lowering of the intermediate top portion when the first and second top portions are moved to a certain position; however, this is not required. In one non-limiting arrangement, the intermediate top portion is connected or interconnected to the frame so that it cannot be completely lifted off or removed from the frame when the intermediate top portion is being raised and/or lowered; however, this is not required. In another and/or alternative non-limiting embodiment of the invention, the movement mechanism causes automatic lifting and/or lowering of the intermediate top portion when the first and second top portions are moved to a certain position; however, this is not required. In such an arrangement, the movement mechanism causes the intermediate top portion to move upwardly from the lower or stowed position when the first and second top portions are moved a sufficient distance away from one another (i.e., toward the expanded position); however, this is not required. Many different arrangements can be used to cause the intermediate top portion to automatically move upwardly and/or downwardly (e.g., rail and slot arrangement, spring system, electric motor, gear arrangement, weight and/or pulley arrangement, etc.). Once the intermediate top portion has moved upwardly, the first and second top portions can be designed to be moved slightly toward one another until the outer edges of the intermediate top portion are positioned next to or closely adjacent to the inner edges of the first and second top portions when the table is in the expanded position so as to form the expandable table in the expanded orientation; however, this is not required.
Furthermore, when the expandable table is to be positioned from the expanded positioned to the smaller or unexpanded position, the movement mechanism can be designed such that when the

4 first and second top portions are slightly moved apart from one another, the intermediate top portion is caused to move downwardly thereby enabling the first and second top portions to move together until the inner edges of the first and second top portions are positioned next to or closely adjacent to one another; however, this is not required. The design of the automatic lifting and/or lowering of the intermediate top portion by the movement mechanism simplifies the movement of the intermediate top portion when the table is configured between the expanded and unexpanded orientations.
In still yet another non-limiting aspect of the invention, when the expandable table includes first and second top portions and an intermediate top portion, the table is designed to enable an umbrella to be used with the table. In one non-limiting embodiment of the invention, the first and second top portions include a cut-out portion or recessed portion that forms an opening for an umbrella pole when the inner edges of the first and second top portions are positioned next to or closely adjacent to one another. The cut-out or recessed portions on the first and second top portions are generally aligned with one another so as to form the umbrella pole opening when the inner edges of the first and second top portions are positioned next to or closely adjacent to one another. In another and/or alternative non-limiting embodiment of the invention, the intermediate top portion includes an umbrella opening designed to enable an umbrella pole to pass therethrough. In one non-limiting arrangement, the umbrella does not need to be removed from the expandable table when the expandable table is reconfigured between the expanded and unexpanded orientations. This feature is a significant advantage over prior art tables wherein the umbrella needed to be partially or fully removed from the table when the table was reconfigured between the expanded and unexpanded orientations. The expandable table of the present invention can be designed so that the intermediate top portion moves upwardly and downwardly when the expandable table is reconfigured between the expanded and unexpanded orientations. As such, the intermediate top portion is designed to slide up and down a portion of the umbrella pole when the table was reconfigured between the expanded and unexpanded orientations, thus eliminating the need for the umbrella to be removed from the expandable table when the expandable table is reconfigured between the expanded and unexpanded orientations.
In still another non-limiting aspect of the present invention, when the expandable table only includes first and second top portions and no intermediate top portion, the first and second top portions of the expandable table both have an inner edge wherein the inner edges are

5 positioned next to or closely adjacent to one another when the table is in the expanded position.
The first top portion is designed to move primarily or only in a single horizontal plane when the table is configured between the expanded and unexpanded position; however, this is not required. The second top portion is designed to be positioned in a stowed position when the table is in the unexpanded position. When the second top portion is in the stowed position, a majority of all of the second top portion is positioned below the first top portion. When the table is to be configured to the expanded position, the first top portion is moved away from the center of the table frame, and the second top portion is moved in the opposite direction of the first top portion and then lifted or raised to the same or substantially the same plane as the first top portion. Thereafter, the first and second top portions can be moved together to complete the reconfiguration of the table from the unexpanded position to the expanded position. When the table is to be reconfigured to the unexpanded position, the first top portion is moved a small or short distance from the center of the table and the second top portion is moved to a lower position so that it can slide underneath the first top portion. Once the second top portion is moved to a lower level, the first top portion can then be moved toward the center of the table.
Generally, both the first and second top portion are connected or interconnected to the frame to enable the first and second top portion to move relative to the frame and to also enable the second top portion to move between an upper and lower horizontal plane.
Generally, the first and second top portions are designed to not be removed from the frame when configuring the table between the expanded and unexpanded positions; however, this is not required. The first top portion can be designed to be stationary or be movable to accommodate the movement of the second top portion between the stored and elevated positions. The table can also be designed to be used with an umbrella; however, this is not required.
In yet another non-limiting aspect of the invention, when the expandable table only includes first and second top portions, the frame of the table includes a movement mechanism that enables the first and second top portions to move (e.g., slide mechanism, roller mechanism, ball bearing mechanism, etc.) relative to the top of the frame. Various types of railing systems can be used to enable such movement of the first and second top portions relative to the frame.
In one non-limiting embodiment of the invention, the movement mechanism does not include ball bearings; however, this is not required. In another and/or alternative non-limiting embodiment of the invention, the movement mechanism includes a rail system that allows rail

6 sections to slide or move relative to one another without the use of ball bearings; however, this is not required. In still another and/or alternative non-limiting embodiment of the invention, the movement mechanism includes multiple rail systems; however, this is not required. In yet another and/or alternative non-limiting embodiment of the invention, the movement mechanism is designed to allow the first and second top portions to move independently of one another when the first and second top portions are moved between the expanded and unexpanded positions;
however, this is not required.
In yet another non-limiting aspect of the invention, when the expandable table includes only first and second top portions, the frame of the table includes a movement mechanism that enables the second top portion to move upwardly to a full upward position and downward to the stowed position as the first and second top portions are moved between the expanded and unexpanded positions. In one non-limiting embodiment of the invention, the movement mechanism allows for manual lifting and/or lowering of the second top portion when the first top portions is moved to a certain position; however, this is not required. In one non-limiting arrangement, the first and second top portions are connected or interconnected to the frame so that both top portions cannot be completely lifted off or removed from the frame; however, this is not required. In another and/or alternative non-limiting embodiment of the invention, the movement mechanism causes automatic lifting and/or lowering of the second top portion when the first portion is moved to a certain position; however, this is not required. In such an arrangement, the movement mechanism causes the second top portion to move upwardly from the lower or stowed position when the first top portion is moved a sufficient distance away from the center of the table (i.e., toward the expanded position); however, this is not required. Many different arrangements can be used to cause the second top portion to automatically move upwardly and/or downwardly (e.g., rail and slot arrangement, spring system, electric motor, gear arrangement, weight and/or pulley arrangement, etc.). Once the second top portion has moved upwardly, the first and/or second top portions can be designed to be moved slightly toward one another until the outer edges of the two top portions are positioned next to or closely adjacent to the inner edges of one another when the table is in the expanded position so as to form the expandable table in the expanded orientation; however, this is not required.
Furthermore, when the expandable table is to be positioned from the expanded positioned to the smaller or unexpanded position, the movement mechanism can be designed such that when one or both of

7 the top portions are slightly moved apart from one another, the second top portion can be or caused to be moved downwardly thereby enabling the first top portion to move toward the center of the table; however, this is not required. The design of the automatic lifting and/or lowering of the second top portion by the movement mechanism simplifies the movement of the second top portion when the table is configured between the expanded and unexpanded orientations. As can be appreciated, the movement of the first and/or second top portions can be manual when the table is configured between the expanded and unexpanded orientations.
In another non-limiting aspect of the invention, the first and/or second top portions can include engagement members (e.g., protruding flanges or legs, etc.) that engage another top portion so as to temporarily secure together, rigidify, stabilize, etc. the top of the expandable table; however, this is not required. In still another non-limiting aspect of the invention, the configuration of the expandable table is non-limiting. The top portions of the table can form a top surface of the expandable table that has generally circular configurations, oval configurations, square configurations, rectangular configurations, etc. The pattern used to form one or more of the top portions of the expandable table is non-limiting. For example, one or more of the top portions can include a solid surface, a slatted surface, a glass surface, a plastic surface, a metal surface, a cross-hatch surface, etc. The expandable table can be made of many types of materials (e.g., metal, wood, glass, ceramic, stone, bamboo, plastic, etc.). As can be appreciated, the expandable table can be made of more than one type of material. The length, width and/or height of the expandable table are non-limiting. The color of the expandable table is non-limiting.
It is one non-limiting object of the present invention to provide an expandable table that is simple to use.
It is another and/or alternative non-limiting object of the present invention to provide an expandable table that can be reconfigured between the expanded and unexpanded orientations without having to remove from the frame and/or insert on the frame one or more top portions of the table.
It is still another and/or alternative non-limiting object of the present invention to provide an expandable table that includes an intermediate top portion that is connected or interconnected to the table frame and which moves upwardly and downwardly and moves little, if any, within the longitudinal axis of the table frame when the expandable table is reconfigured between the

8 expanded and unexpanded orientations.
It is yet another and/or alternative non-limiting object of the present invention to provide an expandable table that can be reconfigured between the expanded and unexpanded orientations without having to remove an umbrella pole.
It is another and/or alternative non-limiting object of the present invention to provide an expandable table that causes the intermediate top portion to automatically move between the downward or stowed position and the upward position when the expandable table is reconfigured between the expanded and unexpanded orientations.
It is still another and/or alternative non-limiting object of the present invention to provide an expandable table that includes only first and second top portions and the second top portion is slidably connected to the table frame and is moveable from a stowed position that is beneath the first top portion when the table is in the unexpanded position to a raised position that is generally level with the first top portion when the table is in the expanded position.
These and other objects and advantages will become apparent from the following description taken together with the accompanying drawings.

BRIEF DESCRIPTION OF DRAWINGS
Reference may now be made to the drawings, which illustrate various embodiments that the invention may take in physical form and in certain parts and arrangements of parts wherein;
FIGURE 1 is a front elevation view of the expandable table of the present invention in an unexpanded state;
FIGURE 2 is a front elevation view of the expandable table in the partially expanded position;
FIGURE 3 is a front elevation view of the expandable table in the partially expanded position;
FIGURE 4 is a front elevation view of the expandable table wherein the first and second top portions are in the fully expanded position and the intermediate top portion has moved to an upper position;
FIGURE 5 is a front elevation view of the expandable table in the expanded position;
FIGURE 6 is a side view of the expandable table in the unexpanded position;
FIGURE 7 is a side view of the expandable table in the expanded position;

9 FIGURE 8 is an exploded view of one non-limiting rail system configuration for movement of the first and second top portions used on the expandable table;
FIGURE 9 is an assembled view of the rail system of FIGURE 8;

FIGURE 10 is a cross-section view of a portion of the expandable table wherein the intermediate top portion is in the lower position;
FIGURE 11 is a cross-section view of a portion of the expandable table wherein the intermediate top portion is in the upper position;
FIGURE 12 is a sectional view of one non-limiting rail system configuration for the intermediate top portion;
FIGURES 13A-H illustrate the operation of the rail system configuration for the intermediate top portion and how such rail system causes the intermediate top portion to move between the upper and lower positions;
FIGURE 14 is a front elevation view of another expandable table in the unexpanded position in accordance with the present invention;
FIGURE 15 is a cross-sectional view along line 15-15 of FIGURE 14;
FIGURE 16 is a cross-sectional view along line 16-16 of FIGURE 14;
FIGURE 17 is a cross-sectional view along line 17-17 of FIGURE 15;
FIGURES 18-21 are front elevation views of the expandable table of FIGURE 14 in the partially expanded position;
FIGURE 22 is a front elevation view of the expandable table of FIGURE 14 in the fully expanded position;
FIGURE 23 is a cross-sectional view along line 23-23 of FIGURE 18;
FIGURE 24 is a cross-sectional view along line 24-24 of FIGURE 19;
FIGURE 25 is a cross-sectional view along line 25-25 of FIGURE 20;
FIGURE 26 is a cross-sectional view along line 26-26 of FIGURE 21;
FIGURE 27 is a cross-sectional view along line 27-27 of FIGURE 22;
FIGURES 28 and 29 is an sectional view of one corner of the expandable table of FIGURE 14; and, FIGURES 30-32 illustrate an alternative rail system configuration that can be used with the expandable table of the present invention.

NON-LIMITING DETAILED DESCRIPTION OF THE INVENTION
Referring now to the drawings wherein the showings are for the purpose of illustrating non-limiting embodiments of the invention only and not for the purpose of limiting same, FIGURES 1- 13 illustrate one-limiting embodiment of the expandable table of the present invention. The expandable table is illustrated as having a generally square shape for the top surface when the expandable table is in the unexpanded position. As can be appreciated, the shape of the top surface of the table can have many other configurations when in the unexpanded position (e.g., circular, oval, rectangular, etc.). The top surface of the table is illustrated as being solid; however, it can be appreciated that other configurations can be used (e.g., clear top, slatted top, cross-hatched top, etc.).
The table can be made of one or more materials (e.g., metal, glass, plastic, ceramic, wood, rubber, composite materials, stone, bamboo, etc.). As can be appreciated, the expandable table can be made of more than one type of material. The length, width and/or height of the expandable table are non-limiting. The color of the expandable table is non-limiting.
The table 20 includes a frame 30. The configuration of the frame is non-limiting. The frame is illustrated as having four legs 40, 42, 44, 46. As can be appreciated, the frame can include a single leg, two legs, three legs, or more than four legs.
Reinforcing structures 50, 52, 54, 56, 58, 60 can be optionally used to connect to one or more of the legs to rigidify the frame;
however, this is not required. The configuration of the one or more reinforcing structures is non-limiting. As illustrated in FIGURE 1, reinforcing structures 58, 60 are connected together to form an umbrella pole support opening 70. The formation of umbrella pole support opening is optional. The top of the legs are connected to the upper portion of the frame so as to rigidify the frame. As illustrated in FIGURE 6, the upper portion of the frame includes two main side members 62, 64 and two connector bars 66, 68.
The expandable table is positioned in the unexpanded portion as illustrated in FIGURE 1.
The top of the expandable table is formed of first and second top portions 80, 90. An intermediate top portion 100 is illustrated as being positioned between the first and second top portions. As illustrated in FIGURE 1, the inner side edges 82, 92 of the first and second top portions are positioned next to or closely adjacent to one another. As can be appreciated, the inner side edges can contact one another when the table is in the unexpanded position; however, this is not required. The intermediate top portion is positioned beneath the lower edge 84, 94 of the first and second top portions. This position of the intermediate top portion is considered the lower or stowed position. Generally, the intermediate top portion is positioned such that it is spaced from the lower or bottom surface of the first and second top portions when in the table is in the unexpanded position. Such positioning of the intermediate top portion facilitates in the intermediate top portion not contacting the bottom of the first and/or second top portions when such portions are moved, thus 1) limiting damage to the first and/or second top portions or intermediate top portion, and/or 2) limiting interference of movement of the first and/or second top portions or intermediate top portion.
The intermediate top portion is illustrated as having the same or similar length as the width of the first and second top portions; however, this is not required.
Generally, the length of the intermediate top portion is selected so that the front and back edges 102, 104 do not extend beyond the front edges 86, 96 and back edges 88, 98 of the first and second top portions;
however, this is not required. The intermediate top portion is illustrated in the lower or stowed position in FIGURE 1.
The expandable table can optionally be designed to be used with an umbrella.
As illustrated in FIGURE 1 there is illustrated an umbrella pole 200 in dotted lines. The base of the umbrella pole is positioned in an umbrella stand 210, also in dotted lines.
The umbrella pole is illustrated as being inserted through the umbrella pole support opening 70 formed by support structures 58, 60. The umbrella pole also extends through umbrella opening 106 in the intermediate top portion. The inner side edges 82, 92 of the first and second top portions include an umbrella recess 89, 99. When first and second top portions are positioned in the unexpanded position, the two umbrella recesses 89, 99 align with one another and form an opening that the umbrella pole can extend therethrough as illustrated in FIGURE 1. The size and shape of recesses 89 and 99 are generally the same. When the recesses are semi-circular, each recess is configured to encircle 40-60% of the outer perimeter of the umbrella pole;
however, this is not required. A cap can be used to cover the umbrella opening when an umbrella is not being used;
however, this is not required. As can be appreciated, when the expandable table is not designed to be used with an umbrella, the umbrella opening 106 in the intermediate top portion and umbrella recesses 89, 99 can be eliminated.
Referring now to FIGURE 2 the first and second top portions are moved in the direction indicated by the arrows to thereby begin separating the first and second top portions so that the expandable table can be configured in the expanded position. As illustrated in FIGURE 2, the intermediate top portion remains in the lower or stowed position when the first and second top portions are initially moved apart from one another. As is also illustrated in FIGURE 2, the umbrella pole, when used, remains inserted in the expandable table as the expandable table is converted from the unexpanded to the expanded position. As will be described in more detail below, when the table is designed for use with an umbrella, the unique configuration and operation of the expandable table enables the expandable table to be moved between the expanded and unexpanded configurations without having to remove the umbrella pole.
Referring now to FIGURE 3, the first and second top portions have been moved apart a distance that is generally equal to the width of the intermediate top portion.
The top intermediate top portion is illustrated as still being in the lower or stowed position.
Referring now to FIGURE 4, the first and second top portions are illustrated as being moved to the fully extended positions. In such positions, the first and second top portions have been moved apart a distance that is greater than the width of the intermediate top portion. The intermediate top portion is illustrated as now being in the upper position as indicated by the arrow. In the upper position, the top surface of the intermediate top portion lies in the same or substantially the same plane as the top surface of the first and second top portions. The movement of the intermediate top portion from the lower position to the upper position occurs in a plane that is normal or substantially normal to the plane of movement of the first and second top portions. The novel movement of the intermediate top portion enables the umbrella pole, when used, to remain positioned in the expandable table as the expanded table is configured between the expanded and unexpanded configurations. Once the intermediate top portion is moved to the upper position, the first and second top portions are moved together as indicated by the arrows in FIGURE 5 until inner side edges 82, 92 of the first and second top portions engage or are more closely adjacent to side edges 107, 109 of the intermediate top portion. FIGURE 5 illustrates the expandable table in the expanded configuration. One or more latches, friction arrangements, rail notches, etc., not shown, can be optionally used to limit or prevent movement of the first and/or second top portions after the table is in the final expanded position. These arrangements, when used, prevent or inhibit a user from inadvertently causing one or more top portions to move when the table is in use.
Referring now to FIGURES 6-13, one non-limiting arrangement that can be used to move the first, second and intermediate top portions on the frame of the expandable table is illustrated.
As can be appreciated, other arrangements can be used to move the first, second and/or intermediate top portions on the frame of the expandable table. FIGURE 6 illustrates a side view of the expandable table in the unexpanded position. FIGURE 7 illustrates a side view of the expandable table in the expanded position. Referring now to FIGURES 8-9, one non-limiting rail system that can be used to move the first and second top portions is illustrated. The rail system is designed to simultaneously move the first and second top portions.
As can be appreciated, such a rail system is not required. In such a configuration, a user need only pull/push one of first or second top portions to cause the other top portion to move. A movement arrangement such as, but not limited to, a cable system, a chain system, a gear system, etc. can be used to facilitate in the simultaneous movement of the first and second top portions. The rail system is connected to each of the main side members 62, 64. The rail system includes a first rail 120 and a second rail 130. The first rail is connected to the first top portion and the second rail is connected to the second top portion. The first and second rails are generally connected to the bottom surface of the first and second top portions; however, the connection can be in other or additional locations. The arrangement used to connect the first and second top portions to the first and second rails is non-limiting (e.g., weld, bolts, screws, clamps, etc.). A mount flange 121, 131 is illustrated as being used to mount the first and second top portions to the first and second rails; however, this is not required. The first and second top portions are mounted to the rails such that the top surface of the first and second top portions lies in the same or generally the same plane. The first and second rails travel over a plurality of rollers 140, 150 that are mounted to the main side members 62, 64. As can be appreciated, an arrangement that fully or partially replaces the use of a roller can be used (e.g., slide arrangement, bearings, etc.). Each of the rails includes a C-shaped roller cavity 122,132 that are designed to receive rollers 140, 150. The rail system also includes friction wheels 160 that are mounted to the main side members 62, 64. The friction wheels are used to cause the first and second rails to simultaneously move in opposite directions. The friction wheels also cause the first and second rails to move the same or substantially the same distance in opposite directions as illustrated by the arrows in FIGURE 9.
As can be appreciated, other arrangements can be used to cause the first and second rails to simultaneously move in opposite directions (e.g., chains, cables, rope, gears, rods, slat system, etc.).

As illustrated in FIGURES 8 and 9, rails 120, 130 each include a wheel flange 124, 134 that is designed to engage the friction wheels. The material used to form the friction wheels is non-limiting. As illustrated in FIGURE 9, when the first and second top portions are moved toward an expanded position, the friction wheels on main side member 64 rotate in a clockwise direction as illustrated by the arrows and thereby cause rails 120 and 130 to move in opposite directions to cause the first and second top portions to simultaneously move toward the fully expanded or extended position. When the first and second top portions are moved toward the fully non-expanded or nonextended position, the friction wheels on main side member 64 rotate in a counter clockwise direction and thereby cause rails 120 and 130 to move in opposite directions to cause the first and second top portions to simultaneously move toward one another.
As can be appreciated, the rail system on main side member 62, not shown is a mirror configuration of the rail system on main side member 64 as described above. As can be appreciated, certain features on rail systems may not be present on the other rail system (e.g., friction wheels). As can be appreciated, the number of friction wheels and rollers on each of the rail systems is non-limiting.
Referring now to FIGURES 8-13, the non-limiting arrangement used to cause the intermediate top portion to move between the upper and lower positions is shown. The intermediate top portion is mounted to two rails 170, 180. The arrangement used to connect the intermediate top portion to the first and second rails is non-limiting (e.g., weld, bolts, screws, clamps, etc.). As illustrated in FIGURES 10 and 11, a screw 171 is used to secure the intermediate top portion to rail 172. An optional fastening grommet 173 can also be used. Each of the rails includes a guide pin opening 172, 182. The guide pin openings are designed to receive a guide pin 67, 69 that are connected to connector bars 66, 68. The guide pins are used to limit the movement of the intermediate top portion only to a plane normal to the movement of the first and second top portions. As can be appreciated, other arrangements can be used to limit the movement of the intermediate top portion only to a plane normal to the movement of the first and second top portions. Rails 170, 180 also include a slot arrangement 174, 184 that is used to cause the intermediate top portion to automatically move between the upper and lower positions when the first and second top portions are moved between the fully extended and unextended position. As can be appreciated, other arrangements can be used to cause the intermediate top portion to automatically move between the upper and lower positions when the first and second top portions are moved between the fully extended and nonextended position (e.g., chain system, spring system, gear system, motor system, pulley system, etc.). As can also be appreciated, an arrangement can be used such that the intermediate top portion is manually moved between the upper and lower positions when the first and second top portions are moved between the fully extended and nonextended position. In such an arrangement, there could be provided an upper retaining arrangement that maintains the intermediate top portion in the upper position after being manually moved to the upper position so as to facilitate in moving the first and second top portions toward the raised intermediate top portion to form the expanded configuration of the expandable table; however, this is not required. Rails 170, 180 can include other arrangements that can be used to cause the intermediate top portion to move between the upper and lower positions when the first and second top portions are moved between the fully extended and nonextended position. The slot arrangement is designed to receive a guide post 126, 136 on rails 120, 130. The guide extension 128, 138 on the guide posts are oriented such that both of the guide extensions lie in the same plane that is substantially parallel to the plane of the top surface of the first and second top portions as illustrated in FIGURE 9.
Referring now to FIGURES 10 and 11, a cross-sectional view of the rail system on main side member 64. FIGURE 10 illustrates the intermediate top portion in the lower or stowed position. The positioning of guide extensions 128, 138 in the slot arrangement of rail 170 results in such positioning of the intermediate top portion. Guide pin 69 is positioned in guide pin opening 172 to limit the direction of movement of the intermediate top portion. FIGURE 11 illustrates the intermediate top portion in the upper position. The positioning of guide extensions 128, 138 in the slot arrangement of rail 170 results in such positioning of the intermediate top portion. Guide pin 69 is maintained positioned in guide pin opening 172 to limit the direction of movement of the intermediate top portion. As can be appreciated, the guide pins can also be designed to limit the amount that the intermediate top portion can be raised;
however, this is not required. As can also be appreciated, the configuration rail 180 can be the same as rail 170, and the operation can also be substantially the same as the intermediate top portion moving between the upper and lower position; however, this is not required.
An alternative rail arrangement is illustrated in FIGURES 30-33. The operation of the rail system is similar to the rail system illustrated in FIGURES 8-11, thus a detailed discussion regarding the operation of the rail system illustrated in FIGURES 30-33 will not be discussed herein. Similar parts for the two rail system are similarly numbered. As illustrated in FIGURE
30, main side member 64 has a rectangular cross-sectional shape as opposed to a C-shape as illustrated in FIGURES 8 and 11. The main side member 64 includes a plurality of screw openings 65 that are used to mount a wheel plate 142 to the inner face of the main side member.
The wheel plate includes openings 144 that are designed to receive screws 145.
The top and bottom edges of the wheel plate includes mount tabs 146 which also include openings 147.
Openings 147 are also designed to receive screws 145. As illustrated in FIGURE
31, the screws are used to secure the wheel plate to the inner face of the main side member 64. A similar arrangement exists on main side member 62. As illustrated in FIGURE 30, rollers and wheels 140, 150 and 160 are rotatable mounted to the wheel plate.

As illustrated in FIGURES 32 and 33, rails 120, 130 are secured to the wheel plate. The configuration of rails 120, 130 is similar to the configuration of rails 120, 130 illustrated in FIGURES 8-11. As illustrated in FIGURES 32 and 33, rails 120, 130 are formed of bent material such as bent metal. Rails 120, 130 as illustrated in FIGURES 8-10 are illustrated as being form in a molding or extrusion process. Both type of rails 120, 130 includes a roller cavity 122, 132, FIGURES 10 and 33 illustrated the same view illustrating the two rail systems.
As best illustrated in these two FIGURES, friction wheel 160 and rollers are illustrated as having a slightly different configuration; however, this is not required. As illustrated in FIGURE 33, the friction wheel is a two piece wheel having a outer region 162 and is connected to a inner region 164. The materials used for the two components is non-limiting. Generally the inner region is formed of a durable hard material (e.g., metal, hard plastic, etc.) and the outer region is formed of a gripping material (e.g., rubber, plastics, etc.). A connection arrangement 166 (e.g., T-Bar mount, etc.), 168 (e.g., slot, etc.) is illustrated as securing the outer region to the inner region.
The type of connection arrangement is non-limiting. The operation of the two rail systems is substantially the same.
Referring now to FIGURE 1 a sectional view of the slot arrangement 184 of rail 180 is illustrated. The slot arrangement includes a lower level 186, and upper level 187, a transition level 188, and a transition junction 189. As can be appreciated, a similar arrangement can exist on rail 170 as illustrated in FIGURE 8. The rail also includes a gate flange 190 that is pivotally connected to rail 180. As illustrated in FIGURE 12, a hex screw 191 is used to secure the gate flange to rail 180. As can be appreciated, the gate flange can be pivotally connected to rail 180 by other means. The arrows on the gate flange illustrate the direction the gate flange can pivot.
The gate flange is generally mounted so that it hangs freely in the downward position by the force of gravity as illustrated in FIGURE 12; however, this is not required.
Pivot limiters 192, 194 are positioned on each side of the gate flange to limit the amount the gate flange can pivot in each direction. The positioning and the material used for the pivot limiters are non-limiting. The pivot limiters are generally positioned so that the gate flange can be sufficiently pivoted so that the guide extension 138 can move along the lower level of the slot arrangement. The movement of the guide extensions 128, 138 within the slot arrangement of rail 180 is illustrated in FIGURES 13A-H as the intermediate top portion 100 moves between the upper and lower positions as the first and second top portions are moved between the fully extended and fully nonextended or collapsed positions. FIGURE 13A illustrates the position of the intermediate top portion relative to the first and second top portions when the expandable table is in the unexpanded position. Guide extensions 128, 138 are positioned in the upper level 187 of the slot arrangement.
FIGURE 13B illustrates that the first and second top portions are moved away from one another as illustrated by the arrows. As guide extensions 128, 138 travels downwardly on the transition level 188 of the slot arrangement as illustrated by the arrows, the intermediate top portion is caused to begin moving upwardly as illustrated by the arrows.

illustrates the positioning of the first and second top portions in the fully extended or expanded position. The guide extensions 128, 138 in the lower level 186 of the slot arrangement limit further movement of the first and second top portions in the expanded direction once the guide extensions reach the end of the slot in lower level 186. The guide extensions 128, 138 have moved past the gate flanges 190 and the arrows on the gate flanges indicate the gate flanges are pivoting downwardly back to the rest position of the gate flange once the guide extensions have moved past the gate flange. Once the guide extensions 128, 138 have traveled to lower level 186 of the slot arrangement, the intermediate top portion is positioned in the fully upper position.
When the first and second top portions are in the fully extended or expanded position, the inner side edges 82, 92 of the two top portions are spaced from the side edges 107, 109 of the intermediate top portion as illustrated in FIGURE 13C. As can be appreciated, the first and second top portions do not need to be moved to the fully expanded or extended position to cause the intermediate top position to move to the full upper position and to reconfigure the expandable table into the expanded position. The expandable table is configured to the expanded position by moving the first and second top portions toward the intermediate top portion as illustrated in FIGURE 13D as indicated by the arrows. As the guide extensions 128, 138 move horizontally along the lower level 186 of the slot arrangement, the guide extensions 128, 138 contact the gate flange 190 and cause the gate flange to pivot upwardly and to block the transition junction 189 so that the guide extensions 128, 138 can only proceed along the lower level of the slot arrangement. Pivot limiter 194 limits the upward movement of the gate flange, but allows the gate flange to pivot upwardly a sufficient distance to enable the guide extensions 128, 138 to pass under the gate flanges. FIGURE 13E illustrates the expandable table in the final expanded position. The length of the lower level of the slot arrangement is selected to enable the first and second top portions to move toward the intermediate top portion so that the inner side edges 82, 92 of the two top portions contact or are positioned closely adjacent to side edges 107, 109 of the intermediate top portion. The gate flange is illustrated as hanging downwardly in the resting position. As illustrated in FIGURES 13A-13E, the intermediate top portion moved vertically upward or normal to the plane of movement of the first and second top portions. This novel movement of the intermediate top portion enables an umbrella, when used, to move in position relative to the expandable table as the expandable table is expanded and contracted.
Referring now to FIGURES 13F-H, the reconfiguration of the expandable table from the expanded position to the unexpanded position is illustrated. The intermediate top portion is caused to move to the lower portion by initially moving the first and second top portions toward the fully extended or expanded position. Once the guide extensions 128, 138 reach the transition junction 189 in the slot arrangement, the guide extensions 128, 138 will move into transition level 188 since the weight of the intermediate top portion will cause the intermediate top portion to move toward the downward or stowed position as indicated by the arrows.
Once the guide extensions 128, 138 move into transition level 188, the movement of the first and second top portions away from one another is stopped. As illustrated in FIGURE 13F, the distance that the first and second top portions are spaced apart at the point that the guide extensions 128, 138 will move into transition level 188 is a smaller distance than when the first and second top portions are spaced apart when the intermediate top portion is being moved to the upper position as illustrated in FIGURE 13C. As illustrated in FIGURES 13G and 13H, as the first and second top portions are moved together as indicated by the arrows, the guide extensions 128, 138 travel upwardly along the transition level 188 thereby causing the intermediate top portion to continue movement downwardly toward the lowered or stowed position. Once the guide extensions 128, 138 have reached the upper level 187 of the slot arrangement as illustrated in FIGURE 13H, the intermediate top portion is positioned in the lowered or stowed position. The first and second top portions continue to be moved together until positioned as illustrated in FIGURE 13A which represents the unexpanded position of the expandable table.
Referring now to FIGURES 14-27, another non-limiting expandable table 300 is illustrated. The materials used to form the expandable table are non-limiting.
Generally, the same type of materials that can be used to make the expandable table illustrated in FIGURES 1-13 can be used to make the expandable table illustrated in FIGURES 14-27.
Expandable table 300 is configured to include only two table leaves, namely a top leaf 320 and a bottom leaf 330.
One or both leafs can include a panel 325, 327 (e.g., glass panel, plastic panel, wood panel, metal mesh panel, etc.); however, this is not required. The expandable table also includes a frame 310.

The configuration of the frame is non-limiting. The frame is illustrated as having four legs 312, 314, 316, 318. As can be appreciated, the frame can include a single leg, two legs, three legs, or more than four legs. Reinforcing structures, not shown, can be optionally used to connect to one or more of the legs to rigidify the frame; however, this is not required.
As illustrated in FIGURE 14, the expandable table 300 is in the unexpanded position. In the unexpanded position, the top leaf 320 is positioned above the bottom leaf 330. The bottom leaf can be positioned fully or partially under the top leaf. As illustrated in FIGURE 14, the bottom leaf is fully positioned under the top leaf. The bottom leaf is illustrated as having generally the same shape, length, width and thickness as the top leaf;
however, this is not required. Generally, the top and bottom leaf have a square or rectangular shape; however, it can be appreciated that the top and/or bottom leaf can have other shapes (e.g., semi-oval, semi-circular, other polygonal shapes, etc.). The top and/or bottom leaf can fully or partially include a solid surface, a slatted surface, a glass surface, a plastic surface, a metal surface, a cross-hatch surface, etc.
Referring now to FIGURES 15-17, the rail system 340 of the expandable table is illustrated. The rail system includes two rail arrangements 350 and 360 on two sides of the expandable table as illustrated in FIGURE 14. The two rail arrangements have generally the same configuration and are generally mirror configurations of one another. As illustrated in FIGURE 16, rail arrangement 360 includes upper and lower rail slots 370, 380.
When the expandable table is in the unexpanded position, the bottom leaf 330 is supported by bottom rollers 332, 334 that are located in lower rail slot 380, and the top leaf 320 is supported by top rollers 322, 324, 326 that are located in upper rail slot 370. The rollers of the two leaves have generally the same size and shape; however, this is not required. Roller brackets 336, 328 are used to secure the rollers to the top portions 329, 339 of the two leaves. As can be appreciated, bottom leaf 330 can include more than two sets of rollers. Likewise, it can be appreciated that top leaf 320 can include only two sets of rollers or more than three sets of rollers. As can also be appreciated, movement mechanisms other than or in addition to rollers can be used (e.g., bearings, slide arrangements, etc.). The shape and/or type of bracket or other type of arrangement used to secure the top portions of the leaves to the rollers or other type of movement mechanisms is non-limiting. The spacing of the upper and lower rail slots 370, 380 is selected such that the bottom leaf is spaced below the top leaf as illustrated in FIGURES 15 and 17.
The rail slots for each rail arrangement are illustrated as being made of a preformed material 390 that is mounted to the housing of the rail arrangement by one or more connectors 392 such as, but not limited to, a pin, screw, rivet, etc. As can be appreciated, the material used to form the preformed material is non-limiting. As can also be appreciated, the rail arrangement can have one or both rail slots integrally formed in the rail arrangement. The manner in which the rail arrangement is formed and the number of pieces used to form the rail arrangement is non-limiting.
The rail slots for each rail arrangement are illustrated as being sized so that the roller can easily roll within the slot; however, this is not required. Generally, the height of the slots is slightly greater than the diameter of the rollers.
As illustrated in FIGURES 15 and 16, the bottom leaf 330, when in the fully unexpanded position is illustrated as being positioned fully underneath the upper leaf 320. Both rollers 332, 334 are positioned in rail slot 380. Roller 334 on the bottom leaf is positioned against end 382 of rail slot 380. End 382 functions as a stop and prevents further movement of the bottom leaf as the bottom leaf is moved toward end 383. The top leaf 320, when in the fully unexpanded position is illustrated as being positioned above the lower lead 330. Rollers 322, 324, 326 are positioned in rail slot 370. Roller 322 is illustrated as resting against ramp surface 372. Ramp surface 372 functions as a stop in a similar manner as end 382 of rail slot 380. A lock mechanism 400 can be used to secure together and/or otherwise inhibit or prevent movement of the upper and/or bottom leafs when in the unexpanded and/or expanded positions so as to inhibit or prevent inadvertent or undesirable movement of either or both of the two leaves. The type or configuration of the lock mechanism, when used, is non-limiting (e.g., latch, hook, lock, pin, etc.). As illustrated in FIGURE 10, the lock mechanism can in the form of a latch that includes a latch handle 402. The arrow illustrates the movement of latch handle 402 between a locked and unlock position. When the latch in the locked position, the latch can cause a friction engagement with one or more of the wheels to inhibit or prevent movement of the wheels.
Many different mechanisms can be used to inhibit or prevent movement of the wheels. Also or alternatively, the latch mechanism can engage one or more wheels by other or additional means to inhibit or prevent movement of the wheels. Furthermore, the latch mechanism can engage other or additional components (e.g., chains, cables, rope, gears, etc.) to inhibit or prevent movement of one or more of the leafs when the latch is on the locked position.
The rail mechanism is designed to enable the expandable table to be configured between a fully expanded and fully unexpanded position. FIGURES 18-29 illustrate the reconfiguration of the expandable table from the fully unexpanded position to the fully expanded position and how the rollers move within the rail system during such reconfiguration. As illustrated in FIGURES 18 and 23, the center of the top leaf is moved from the center of the frame in the direction of the arrow and front end 323 is moved off of the frame. The top leaf can be moved partially or fully to the fully expanded position of the top leaf prior to moving the bottom leaf.
The fully expanded position of the top leaf is illustrated in FIGURE 19. In the fully expanded position of the top leaf, back end 321of the top leaf is positioned at or near the center or middle of the frame. As can be appreciated, the bottom leaf can be moved from its fully unexpanded position prior to or during the movement of the top leaf, however, this is not required. During the movement of the top leaf from its fully unexpanded position to its fully expanded position, rollers 322, 324, 326 remain in rail slot 370.
As illustrated in FIGURES 15, 16 and 23-27, rollers 322, 324, 326 on top leaf 320 are designed to never move within rail slot 380. The spacing of the three rollers prevents any of the rollers from being able to move to rail slot 370. As illustrated in FIGURE 16, each of the rail arrangements 340, 350 include upper and lower rail slots 370, 380. One end of rail slot 380 includes an end 382. The opposite end of rail slot 370 terminates into ramp 384. Ramp 384 slopes upwardly and terminates at ramp opening 385 into rail slot 370. The configuration of ramp 384 is designed to enable roller 332 on bottom leaf 330 to move between rail slots 370 and 380. A roller gap 386 also exists between rail slots 370, 380. Roller gap 386 is positioned between end 382 and ramp 384 as illustrated in FIGURE 16. Roller gap 386 is shaped and sized to enable roller 334 on bottom leaf 330 to move between rail slots 370 and 380. Roller gap is positioned at the center or middle of frame 310, or positioned off center and toward the direction of ramp 384 as illustrated in FIGURE 16. As illustrated in FIGURES 15, 16 and 23-27, the spacing of the rollers 322, 324, 326 and the spacing of ramp 384 and roller gap 386 is such that whenever roller 322 is over ramp opening 385 or roller gap 386, rollers 324 and 326 are not over roller gap 386. As such, rollers 324 and 326 prevent the tilting of the top leaf so that roller 322 can enter into either ramp opening 385 or roller gap 386. Likewise, the spacing of the rollers 322, 324, 326 and the spacing of ramp 384 and roller gap 386 is such that whenever roller 324 is over roller gap 386, rollers 322 and 326 are not over ramp opening 385. As such, rollers 322 and 326 prevent the tilting of the top leaf so that roller 324 can enter into either roller gap 386. As is evident from the spacing of the rollers 322, 324, 326 and the spacing of ramp 384 and roller gap 386, roller 324 and 326 cannot ever be over ramp opening 385. Also, roller 326 can never be over roller gap 386. As such, the spacing of the rollers 322, 324, 326 and the spacing of ramp 384 and roller gap 386 ensures that roller 322, 324, 326 always remain in rail slot 370. FIGURE
16 illustrates that a landing slot 373 is positioned rearwardly of ramp surface 372. Roller 322 is prevented from moving up ramp surface 372 and into landing slot 372 by rollers 324 and 326.
Rollers 324 and 326 prevent top leaf 320 from being tilted to enable roller 322 to move up ramp surface 372 and into landing slot 372.
Referring again to FIGURES 18, 19, 23 and 24, after the top leaf is moved to its fully expanded position, the bottom leaf 330 is moved in the opposite direction as indicated by the arrow in FIGURE 19 toward its fully expanded position. The initial movement of the bottom leaf occurs in lower rail slot 380 as illustrated in FIGURES 23 and 24. Once roller 332 moves to ramp 384, front end 331 of the bottom leaf is then lifted upwardly so that roller 332 can move upwardly ramp 384 and to rail slot 370 as indicated by the arrow in FIGURE 25.
Bottom leaf then is continued to be moved as indicated by the arrow in FIGURE 25 so that roller 332 moves toward and up ramp surface 372 and into landing slot 373 as illustrated in FIGURES 20 and 25.

As illustrated in FIGURE 25, once roller 332 is fully positioned in landing slot 372, roller 334 is aligned beneath roller gap 386. As indicated by the arrows in FIGURE 20 and 26, the front end 331 is push downward to cause the bottom leaf to pivot on roller 332 and cause roller 334 to be raised and moved into and through roller gap 386 to rail slot 370. Roller gap 386 can optionally include sloped surfaces 387 to facilitate in the movement of roller 334 into and through roller gap 386. Once roller 334 is moved upwardly through roller gap and into rail slot 370, bottom leaf can then be moved toward top leaf 320 as indicated by the arrow in FIGURES 21 and 27 until back end 333 of bottom leaf 330 contacts or is positioned closely adjacent to back end 321 of the top leaf 320 as illustrated in FIGURE 22. Downward pressure can optionally be applied to end 331 as indicated by the arrow in FIGURE 27 to prevent roller 334 from moving downwardly and into roller gap 386 as the bottom leaf is moved toward the top leaf.
FIGURE 22 illustrates the expandable table in the fully expanded position. As illustrated in FIGURE
27, the roller on both the top and bottom leafs are positioned in rail slot 370. As illustrated in FIGURE 27, ends 231, 333 are positioned at or substantially near the center or middle of the frame when the table is configured in the fully expanded position; however, this si not required.
The steps above can be reversed to reconfigure the expandable table from the fully expanded position to the fully unexpanded position.
Referring now to FIGURES 28 and 29, a locking arrangement 410 can be optionally used to inhibit or prevent movement of the top and/or bottom leaf when the expandable table is in the unexpanded and/or expanded position. The non-limiting locking mechanism illustrated in FIGURES 28 and 29 is designed to limit movement of the top leaf. As can be appreciated, a similar or different locking mechanism can also or alternatively be used to limit movement of the bottom leaf. As illustrated in FIGURE 28, the locking mechanism includes a rotatable knob 412 that rotates about a pin 414. The position of knob 412 in FIGURE 28 is the lock position.
FIGURE 29 illustrates knob in the unlocked position.
It will thus be seen that the objects set forth above, among those made apparent from the preceding description, are efficiently attained, and since certain changes may be made in the constructions set forth without departing from the spirit and scope of the invention, it is intended that all matter contained in the above description and shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. The invention has been described with reference to preferred and alternate embodiments. Modifications and alterations will become apparent to those skilled in the art upon reading and understanding the detailed discussion of the invention provided herein. This invention is intended to include all such modifications and alterations insofar as they come within the scope of the present invention. It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described and all statements of the scope of the invention, which, as a matter of language, might be said to fall therebetween.

Claims

What is claimed is:

1. An expandable table comprising a frame, at least one leg supporting said frame, first and second top portions movably connected or interconnected to said frame, and a movement mechanism connected or interconnected to said frame, said movement mechanism configured to cause said first and second top portions to move along a longitudinal axis of said frame between fully unexpanded and fully expanded positions, said movement mechanism configured to cause said second top portion to move between a stowed position and a upper position, said second top portion positioned at least partially under a bottom surface of said first top portion when said table is positioned in the fully unexpanded position, a top surface of said second top portion positioned in generally the same plane as a top surface of said first top portion when said table is positioned in the fully expanded position, said movement mechanism causing said first and second top portions to move along said longitudinal axis of said frame when said table is positioned between said fully unexpanded position and expanded position.

2. The expandable table as defined in claim 1, wherein a top surface of said table lies within a top horizontal plane of said table, said movement mechanism is configured to cause said first top portion to only move within only one horizontal plane that is parallel to said top horizontal plane of said table, said movement mechanism is configured to enable said second top portion to move within two horizontal planes that are parallel to said top horizontal plane of said table.

3. The expandable table as defined in claim 1 or 2, wherein said movement mechanism is configured to enable said second top portion to tilt and become non-parallel to said top horizontal plane of said table when said second top portion is moved between said stowed position and said upper position.

4. The expandable table as defined in claim 2 or 3, wherein said movement mechanism is configured to enable said second top portion to tilt and become non-parallel to said top horizontal plane of said table when said second top portion is moved between said stowed position and said upper position.

5. The expandable table as defined in any one of claims 1-4, wherein said movement mechanism includes a multi-level guide arrangement to enable said second top portion is moved between said stowed position and said upper position.

6. The expandable table as defined in claim 4 or 5, wherein said movement mechanism includes a multi-level guide arrangement to enable said second top portion is moved between said stowed position and said upper position.

7. The expandable table as defined in any one of claims 1-6, wherein said movement mechanism includes a ramp portion and a slot portion, said ramp portion designed to cause a front portion of said second top portion to tilt upwardly and move to an upper rail portion on said movement mechanism when said second top portion is moved from said stowed position and said upper position, said slot portion designed to enable a rear portion of said second top portion to be moved upwardly to said upper rail portion on said movement mechanism after said front portion of said second top portion has been tilted upwardly and moved on to said upper rail portion on said movement mechanism.

8. The expandable table as defined in claim 6 or 7, wherein said movement mechanism includes a ramp portion and a slot portion, said ramp portion designed to cause a front portion of said second top portion to tilt upwardly and move to an upper rail portion on said movement mechanism when said second top portion is moved from said stowed position and said upper position, said slot portion designed to enable a rear portion of said second top portion to be moved upwardly to said upper rail portion on said movement mechanism after said front portion of said second top portion has been tilted upwardly and moved onto said upper rail portion on said movement mechanism.

9. A method for expanding and contracting an expandable table comprising the steps of:
a. providing an expandable table, said expandable table including a frame, at least one leg supporting said frame, first and second top portions movably connected or interconnected to said frame, and a movement mechanism connected or interconnected to said frame, a top surface of said table lying in a top horizontal plane, said second top portion at least partially positioned beneath said first top portion;
b. providing a movement mechanism to enable movement of said first and second top portions, said movement mechanism configured to cause said first and second top portions to move along a longitudinal axis of said frame between fully unexpanded and fully expanded positions;
c. moving said first top portion in a first direction that is away from a center of said table, said first direction along a longitudinal axis of said frame, said first direction generally parallel to said top horizontal plane;
d. moving said second top portion in a direction opposite said first direction;
e. moving said second top portion upwardly until a top surface of said second top portion lies in generally the same plane as a top surface of said first top portion; and, f. moving said first and second top portions toward one another until inner side edges of said first and second top portions contact or are closely adjacent to one another.

10. The method as defined in claim 9, wherein said movement mechanism is configured to cause said first top portion to only move within only one horizontal plane that is parallel to said top horizontal plane of said table, said movement mechanism is configured to enable said second top portion to move within two horizontal planes that are parallel to said top horizontal plane of said table.

11. The method as defined in claim 9 or 10, wherein said movement mechanism is configured to enable said second top portion to tilt and become non-parallel to said top horizontal plane of said table when said second top portion is moved between a stowed position and an upper position.

12. The method as defined in claim 10 or 11, wherein said movement mechanism is configured to enable said second top portion to tilt and become non-parallel to said top horizontal plane of said table when said second top portion is moved between a stowed position and an upper position.

13. The method as defined in any one of claims 9-12, wherein said movement mechanism includes a multi-level guide arrangement to enable said second top portion be moved between a stowed position and an upper position.

14. The method as defined in claim 12 or 13, wherein said movement mechanism includes a multi-level guide arrangement to enable said second top portion be moved between said stowed position and said upper position.

15. The method as defined in any one of claims 9-14, wherein said movement mechanism includes a ramp portion and a slot portion, said ramp portion designed to cause a front portion of said second top portion to tilt upwardly and move to an upper rail portion on said movement mechanism when said second top portion is moved from said stowed position and said upper position, said slot portion designed to enable a rear portion of said second top portion to be moved upwardly to said upper rail portion on said movement mechanism after said front portion of said second top portion has been tilted upwardly and moved onto said upper rail portion on said movement mechanism.

16. The method as defined in claim 14 or 15, wherein said movement mechanism includes a ramp portion and a slot portion, said ramp portion designed to cause a front portion of said second top portion to tilt upwardly and move to an upper rail portion on said movement mechanism when said second top portion is moved from said stowed position and said upper position, said slot portion designed to enable a rear portion of said second top portion to be moved upwardly to said upper rail portion on said movement mechanism after said front portion of said second top portion has been tilted upwardly and moved on to said upper rail portion on said movement mechanism.

17. An expandable table comprising a frame, at least one leg supporting said frame, top portion and a bottom portion, and a movement mechanism connected or interconnected to said frame, said movement mechanism configured to cause one or both of said top portion and said bottom position to move along a longitudinal axis of said frame between fully unexpanded and fully expanded positions, said movement mechanism configured to cause said bottom portion to move both normal and parallel to said longitudinal axis of said frame, said bottom position positioned at - least partially below said top portion when in said unexpanded position, said lower portion positioned adjacent to said top portion when in said expanded position, a top face of said lower portion and a top face of said top portion position in the same or substantially same plane when in the expanded position.

18. The expandable table as defined in claim 17, wherein said movement mechanism is configured to automatically cause said bottom portion to move between a lower position and an upper position based on the orientation and movement of said top portion along said longitudinal axis of said frame, said lower portion positioned at least partially under said top portion when in said lower position.

19. The expandable table as defined in claim 17 or 18, wherein said movement mechanism is configured to enable manual movement of said bottom portion between a lower position and an upper position, said lower portion positioned at least partially under said top portion when in said lower position.

20. The expandable table as defined in any one of claims 17-19, wherein one or both of said top portion and said bottom portion includes an opening designed to receive an umbrella pole.

21. The expandable table as defined in any one of claims 17-20, wherein said movement mechanism includes a multi-level guide arrangement for causing upward or downward movement of said bottom portion when said bottom portion moves between said lower position and said upper position.

22. An expandable table comprising a frame, at least one leg supporting said frame, first and second top portions movably connected or interconnected to said frame, an intermediate top portion movably connected or interconnected to said frame, and a movement mechanism connected or interconnected to said frame, said movement mechanism configured to cause said first and second top portions to move along a longitudinal axis of said frame between fully unexpanded and fully expanded positions, said movement mechanism configured to cause said intermediate top portion to move normal to said longitudinal axis of a plane of movement of said first and second top portions.

23. The expandable table as defined in claim 22, wherein said movement mechanism is configured to automatically cause said intermediate top portion to move between a lower position and an upper position based on the orientation and movement of said first and second top portions along said longitudinal axis of said frame.

24. The expandable table as defined in claim 22 or 23, wherein said intermediate top portion includes an opening designed to receive an umbrella pole, said movement mechanism configured to enable said intermediate top portion to move normal to said longitudinal axis of said plane of movement of said first and second top portions while at least a portion of the umbrella pole remains positioned within said opening of said intermediate top portion.

25. The expandable table as defined in claim 23 or 24, wherein said intermediate top portion includes an opening designed to receive an umbrella pole, said movement mechanism configured to enable said intermediate top portion to move normal to said longitudinal axis of said plane of movement of said first and second top portions while at least a portion of the umbrella pole remains positioned within said opening of said intermediate top portion.

26. The expandable table as defined in any one of claims 22-25, wherein at least one of said first and second top portions includes an umbrella recess that is configured to at least partially encircle an umbrella pole when said first and second top portions are positioned in said fully unexpanded positions.

27. The expandable table as defined in any one of claims 24-26, wherein at least one of said first and second top portions includes an umbrella recess that is configured to at least partially encircle an umbrella pole when said first and second top portions are positioned in said fully unexpanded positions.

28. The expandable table as defined in any one of claims 22-27, wherein said movement mechanism includes a multi-level guide arrangement and a guide gate, said guide gate configured to move in a first position and a second position, said first position and second position of said guide gate controlling access to a particular level of said guide arrangement accessible for causing upward or downward movement of said intermediate top portion when said intermediate top portion moves between said lower position and said upper position.

29. The expandable table as defined in claim 27 or 28, wherein said movement mechanism includes a multi-level guide arrangement and a guide gate, said guide gate configured to move in a first position and a second position, said first position and second position of said guide gate controlling access to a particular level of said guide arrangement accessible for causing upward or downward movement of said intermediate top portion when said intermediate top portion moves between said lower position and said upper position.

30. The expandable table as defined in any one of claims 22-29, including a movement limiter that limits movement of said intermediate top portion to movement in an axis that is normal to said axis of movement of said first and second top portions.

31. The expandable table as defined in claim 29 or 30, including a movement limiter that limits movement of said intermediate top portion to movement in an axis that is normal to said axis of movement of said first and second top portions.

32. The expandable table as defined in any one of claims 22-31, wherein said movement mechanism allows said first and second top portions to be separated a greater distance from one another when said intermediate top portion is being moved from said lower position to said upper position than when said intermediate top portion is being moved from said upper position to said lower position.

33. The expandable table as defined in claim 31 or 32, wherein said movement mechanism allows said first and second top portions to be separated a greater distance from one another when said intermediate top portion is being moved from said lower position to said upper position than when said intermediate top portion is being moved from said upper position to said lower position.

34. An expandable table comprising a frame, at least one leg supporting said frame, first and second top portions movably connected or interconnected to said frame, an intermediate top portion movably connected or interconnected to said frame, and a movement mechanism connected or interconnected to said frame, said movement mechanism configured to cause said first and second top portions to move along a longitudinal axis of said frame between fully unexpanded and fully expanded positions, said movement mechanism configured to cause said intermediate top portion to move normal to said longitudinal axis of a plane of movement of said first and second top portions, said movement mechanism configured to automatically cause said intermediate top portion to move between lower position and an upper position based on the orientation and movement of said first and second top portions along said longitudinal axis of said frame, said intermediate top portion including an opening designed to receive an umbrella pole, said movement mechanism configured to enable said intermediate top portion to move normal to said longitudinal axis of a plane of movement of said first and second top portions while at least a portion of the umbrella pole remains positioned within said opening of said intermediate top portion, said first and second top portions including an umbrella recess that is configured to at least partially encircle an umbrella pole when said first and second top portions are positioned in said fully unexpanded positions.

35. The expandable table as defined in claim 34, wherein said movement mechanism includes a multi-level guide arrangement and a guide gate, said guide gate configured to move in a first position and a second position, said first position and second position of said guide gate controlling access to a particular level of said guide arrangement accessible for causing upward or downward movement of said intermediate top portion when said intermediate top portion moves between said lower position and said upper position, said multilevel guide arrangement including an upper level, a lower level, and a transition region connected to said upper and lower level, said upper level is configured to cause said intermediate top portion to be positioned in said lower position, said lower level is configured to cause said intermediate top portion to be positioned in said upper position, said transition region is configured to cause said intermediate top portion to move between said upper and lower positions.

36. The expandable table as defined in claim 34 or 35, including a movement limiter that limits movement of said intermediate top portion to movement in an axis that is normal to said axis of movement of said first and second top portions.

37. The expandable table as defined in claim 35 or 36, including a movement limiter that limits movement of said intermediate top portion to movement in an axis that is normal to said axis of movement of said first and second top portions.

38. The expandable table as defined in any one of claims 34-37, wherein said movement mechanism allows said first and second top portions to be separated a greater distance from one another when said intermediate top portion is being moved from said lower position to said upper position than when said intermediate top portion is being moved from said upper position to said lower position.

39. The expandable table as defined in claim 37 or 38, wherein said movement mechanism allows said first and second top portions to be separated a greater distance from one another when said intermediate top portion is being moved from said lower position to said upper position than when said intermediate top portion is being moved from said upper position to said lower position.

40. A method for expanding and contracting an expandable table comprising the steps of:
a. providing an expandable table, said expandable table including a frame, at least one leg supporting said frame, first and second top portions movably connected or interconnected to said frame, an intermediate top portion movably connected or interconnected to said frame, and a movement mechanism connected or interconnected to said frame, b. providing a movement mechanism for moving said first and second top portions and said intermediate top portion, said movement mechanism configured to cause said first and second top portions to move along a longitudinal axis of said frame between fully unexpanded and fully expanded positions;

c. moving said first and second top portions away from one another along a longitudinal axis of said frame until a gap between said first and second top portions is greater than a width of said intermediate top portion;
d. causing said movement mechanism to move said intermediate top portion from said lower position to said upper position after said gap between said first and second top portions is greater than a width of said intermediate top portion; and, e. moving said first and second top portions toward said top intermediate top portion until said inner side edges of said first and second top portions contact or are closely adjacent to outer side edges of said intermediate top portion.

41. The method as defined in claim 40, wherein said movement mechanism causes said intermediate top portion to move normal to said longitudinal axis of a plane of movement of said first and second top portions.