# Patent

## Title
Seating apparatus

## Abstract

A combined table and chair seating apparatus is provided. The seating apparatus comprising a table (25), a chair (26) and a table base (16). The table comprises a table top (10) and a table leg (11) defining an axis about which axis the table top is rotatable with respect to the table base. The chair is mounted for rotation with the table top about the axis. In a preferred embodiment, the chair comprises a seat and a chair frame upon which the seat is mounted. The frame includes at least one floor-engaging leg. Preferably, the table leg has upper and lower ends, the lower end being mounted for rotation upon the table base and the chair frame is mounted upon the table leg at a point intermediate the upper and lower ends thereof. More preferably, the chair frame is mounted substantially adjacent the lower end of the table leg.

## Background
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a Continuation of application Ser. No. 10/542,699, filed on Sep. 21, 2006, now U.S. Pat. No. 8,616,629, which is the National Phase of PCT/GB2004/000205 filed on Jan. 19, 2004; and claims priority of Application No. 0301227.5 filed in Great Britain on Jan. 20, 2003. The entire contents of each of these applications is hereby incorporated by reference.


DESCRIPTION
1. Technical Field
The present invention relates to a seating apparatus, and more particularly to a combined table and chair.
2. Background Art
Conventionally, seating arrangements are provided as a separate table and chair. It is known to combine a chair and table, as shown in WO99/34706, for example. This arrangement, however, possesses many of the disadvantages of a conventional table and chair. For example, it is difficult to transport the arrangement, and the user is restricted to facing in one direction.
FR-2 781 656 describes an alternative arrangement for a table having a single central table leg or post. Mounted for rotation about the post is an articulated arm having a seat rotatably mounted at the remote end thereof. However, the table can become unbalanced. Additionally as the seat is rotated about the post, it also rotates about the table. Accordingly, a person sat working at the table has to move their work around the table as they move the seat.
SUMMARY OF INVENTION
The present invention seeks to overcome these problems and provide a more versatile seating arrangement.
According to the present invention there is provided a seating apparatus comprising a table or other surface, a chair and a table base wherein the table comprises a table top and a table leg defining an axis about which axis said table top is rotatable with respect to the table base; wherein the chair is mounted for rotation with said table top about said axis.
In a preferred embodiment, the chair comprises a seat and a chair frame upon which the seat is mounted, wherein the frame includes at least one floor-engaging leg. Preferably, the table leg has upper and lower ends, the lower end being mounted for rotation upon the table base and the chair frame is mounted upon the table leg at a point intermediate the upper and lower ends thereof. More preferably, the chair frame is mounted substantially adjacent the lower end of the table leg.
Alternatively, the table top is mounted for rotation about the upper end of said leg and said chair frame is mounted upon said table top.
Advantageously, each seat frame floor-engaging leg includes means for allowing easy movement across the floor, such as a castor or a glide.
Preferably, the chair is connected to the table leg such that rotation of the chair about the axis of the table leg causes rotation of the table leg. Advantageously, the table top is fixed to the table leg such that rotation of the chair also rotates the table top.
In a preferred embodiment, the table base comprises a lower plate and an upper plate and an intermediate glide disk, and wherein the upper plate is fixed to the table leg. Suitably, the table base is removably secured to the table leg, for example by means of a threaded bolt arrangement. Preferably, the glide disc is made from nylon. More preferably, the glide disc further comprises raised or domed portions to allow for smooth rotation of the upper plate by reducing the surface area in contact with the upper plate.
In an alternative embodiment, the base comprises an upper concave plate having a rim, and a lower plate having a track corresponding to the rim of the upper plate. The base may alternatively comprise rotation means such as ball bearings.
Advantageously, the seat is rotatable about the vertical axis of the chair frame.
Optionally, the height of the seat is adjustable. Suitably, this may be achieved by means of a gas action strut, a threaded bolt or an electrical motor. Similarly, the height of the table may be adjustable, suitably by similar means.
In one embodiment, the table top is tiltable from its horizontal axis. Suitably, the table top is tilted by means of the rotation of a wheel having cogs located on the underside of the table top.
Optionally, the table top is slidable with respect to the table leg. In one arrangement, this can be achieved by means of a glide disc, suitably of nylon, positioned between the surface of the table top and the surface of the table leg. Preferably, the table leg further comprises a plate at the point where it meets the table leg, wherein the plate comprises a plurality of apertures enabling the table top to be locked in position by means of one or more pins. In an alternative embodiment, the seat is slidable with respect to the chair frame. Suitably, this is by means of a similar glide disc and a locking plate.
In one embodiment, the table top is rotatable through 180° about the vertical axis of the table leg. Suitably, this may be by means of a gas action in the table leg, wherein the table leg is fixed off centre to the table top.
The table top may be of any shape which suits the requirements of the user. Suitably, the table top is circular.
Optionally, the table leg further comprises one or more castor legs, each having a castor.
In one embodiment, the apparatus further comprises an additional chair. Suitably, wherein the table base is fixed to the floor.
Advantageously, the table further comprises one or more storage means. In a preferred embodiment, the table top further comprises a hook on its underside, suitable for the storage of coats and bags. Preferably, the hook is also suitable for use as a handle.
A specific embodiment of the invention will now be described by way of example only and with reference to the accompanying drawings in which:



BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is side view of an embodiment of a combined table and chair in accordance with the present invention;
FIG. 2 is a perspective view of the embodiment of FIG. 1;
FIG. 3 is a detailed cross section of the rotation means of the embodiment of FIG. 1;
FIG. 4 is a cross-section along line IV-IV of FIG. 3;
FIG. 5 is cross section of the tilt mechanism of an embodiment of a combined chair and table of the present invention;
FIGS. 6a and 6b are cross sections of an adjusting mechanism of an embodiment of a combined chair and table of the present invention;
FIGS. 7a and 7b are cross sections of two alternative embodiments of a chair frame in accordance with the present invention; and
FIGS. 8a, 8b and 8c are cross sections of an embodiment of a table leg in accordance with the present invention.



BEST AND VARIOUS MODES FOR CARRYING OUT INVENTION
With reference to FIG. 1 there is shown a table 25 having a table top 10 supported on a table leg 11. Table 25 is supported on the ground by table base 16. As is shown in FIG. 3, table base 16 comprises an upper plate 13 and a lower plate 14. Lower plate 14 is connected to upper plate 13 and table leg 11 by means of bolt 20.
In the embodiment shown in FIG. 1, table top 10 is fixed to table leg 11. Table top 10, table leg 11 and upper plate 13 can be rotated easily with respect to lower plate 14 by means of a glide disc 15 positioned between lower plate 14 and upper plate 13. Glide disc 15 has a central aperture 18 for receipt of bolt 20 and raised or domed portions 17 located around its circumference in order to aid smooth movement of upper plate 13, as shown in FIG. 4. Glide disk 15 is suitably made from nylon but may be made from any suitable material. Alternative arrangements enabling rotation are equally suitable. For example, assemblies including ball-races will be suitable. Lower plate 14 may be fixed to the ground by means of a bolt (not shown), for example.
Table 25 is attached to a chair 26. Chair 26 has a seat 21 and a chair frame 31. Chair frame 31 connects seat 21 to table 25 at the base of table leg 11. Chair frame 31 is supported on the ground by two castor legs 22, each having a castor 23. The arrangement of table 25 and chair 26 therefore provides that there are only three points of contact with the ground (two castors 23 and table base 16), as opposed to the 8 legs provided by a traditional separate table and chair.
Chair 26 can be rotated around the circumference of table top 10 using castors 23. Rotation of chair 26 causes the rotation of table leg 11 about its vertical axis, and hence table top 10, which is fixed to table leg 11. Hence it will be seen that Chair 26 rotates with respect to table top 10 in a manner analogous to a geostationary satellite. The apparatus therefore has the advantage that it can be positioned to face in different directions by re-positioning only the chair. This is of particular benefit when the apparatus is used as a school desk or in a conference room, for example. When in use, the weight of the user in seat 21 prevents movement of castors 23, making chair 26 secure. Alternatively or additionally the castors may include a braking arrangement to ensure that rotation is prevented upon application of only a small force downward. The table leg 11 may also include such an arrangement.
In order to illustrate more clearly the extent of the present invention, two alternative embodiments are shown in FIG. 7. In a first alternative embodiment (FIG. 7a), chair frame 31 connects to table 25 at table top 10. In this embodiment, table leg 11 is fixed with respect to table base 16. Table top 10 is rotatable with respect to table leg 11, and hence rotation of chair 26 causes rotation of table top 10. In the second of the alternative embodiments shown in FIG. 7b, chair frame 31 connects to table 25 at a point intermediate table base 16 and table top 10. In this case, an upper portion 41 of table leg 11 is rotatable with respect to a lower portion. Table top 10 is fixed to table leg 11, and the lower portion of table leg 11 is fixed to table base 16. Chair frame 31 is connected to the upper portion of table leg 11, and hence rotation of chair 26 will cause rotation of the upper portion of table leg 11 and table top 10. In both of these embodiments, rotation can be achieved by means of a glide disc, for example.
In preferred embodiments, seat 21 can rotate in a conventional manner about the vertical axis of chair frame 31 in order to enable easy access by a user to seat 21 without interference from table top 10. An additional advantage is provided in that seat 21 can be positioned in any direction, i.e. away from table top 10. Seat 21 and table top 10 are positioned such that table top 10 does not obstruct the rotation of seat 21, which can be rotated through 360°. Seat 21 may be mounted eccentrically with respect to the frame 31 such that the risk of trapping the user's fingers as the chair is rotated is reduced.
The height of seat 21 is adjustable by means of a gas action (not shown) in order to provide for users of different heights. In a modification, the frame 31 may form the outer tube of the gas strut providing the gas action. Similarly, table 25 may be adjustable by means of a gas action (not shown).
In the embodiment of FIG. 5, table top 10 is not permanently fixed to table leg 11. Table top 10 can be tilted away from its horizontal axis in order to provide for the requirements of the user. With reference to FIG. 5, there is shown a table top 10 having a hinge 32 positioned close to the outer edge of table top 10. Hinge 32 engages table top 10 and a bar 40. Both the underside of table top 10 and bar 40 have teeth which engage a cog 33. Cog 33 is positioned close to where table top 10 meets table leg 11. Rotation of cog 33 in a clockwise direction causes its movement towards hinge 32 by engaging the teeth of table top 10 and bar 40. This movement raises the edge of table top 10 remote hinge 32.
Reversing the process will lower the table top to its original position.
In the embodiment shown in FIG. 6, table top 10 is slidable with respect to table leg 11. This provides for adjusting the depth between seat 21 and table top 10. With reference to FIG. 6 there is shown a table top 10 having two runners 36 attached at its underside. Table leg 11 has a rectangular plate 35 attached to its surface where table leg 11 meets table top 10. Plate 35 contains a plurality of apertures along each long side. Runners 36 engage plate 35 hence enabling table top 10 to slide over plate 35. A nylon glide 34 is located between table top 10 and plate 35 to provide for smooth movement of table top 10. Table top 10 is secured in position by means of two pins, each engaging an aperture of plate 35.
With reference to FIG. 8, the depth between seat 21 and table top 10 may alternatively be adjusted by means of rotating table top 10, which is fixed off-centre to table top 10. With reference to FIG. 8 there is shown table leg 11 having two engaging blocks, an upper block 42, and a lower block 43, each having a central aperture, mounted above a spring 44. Table leg 11 is fixed to table top 10 at a short distance from the centre point of table top 10 by a gas action strut 45 which passes through the apertures of upper block 42 and lower block 43 within table leg 11. Table top 10 can be pulled vertically to disengage block 42 from block 43. Table top 10 can then be rotated through 180° and released thereby orienting table top 10 with its centre-point positioned in line with table leg 11. This action alters the distance of the edge of table top 10 from seat 21.
With reference to FIG. 1, table 25 also has a storage hook 24 located on the underside of table top 10. Hook 24 provides for the storage of items such as coats and bags. Hook 24 has the additional advantage that it can be used as a handle to move the apparatus. Table 25 can be lifted by hook 24, and the apparatus can be transported on castors 23.
The embodiments described above can be modified in a number of ways, all encompassed by the present invention. For example, where components are formed from injection-moulded plastics materials, additional aesthetic features can be incorporated. The apparatus may also incorporate a footrest, which may be mounted on the table leg 11 or on the chair.
In embodiments comprising a plurality of seats, the seats may be mounted at fixed respective angles, such as opposite each other at 180°, or adjacent, such as at angles of from 30° to 90°. Alternatively, the angle between adjacent seats may be variable.
The apparatus of the present invention may further include shelves above or below the table top and/or a cradle for receipt of a computer case. Indeed, in one embodiment (not shown), computer hardware, including a monitor are fully integrated into the table. In particular, the table top may constitute a housing for the hardware of a computer workstation and the input devices may be incorporated into the surface of the table top.
The apparatus of the present invention is of particular benefit in educational environments. It allows simply and rapid re-orientation of a classroom. This is particularly advantageous in the teaching of information technology and communications where conventionally students are sat at desks arranged around the edge of a room (to allow for connectivity to power supplies and network communications). However, sometimes, whole class teaching at a board at the front of the classroom may be desirable. In conventional arrangements, the students can turn their seats to face the board but are then left without a desk at which to write. The present invention overcomes such difficulties.

## Claims

1. A mobile desk adapted to be supported by a support surface, comprising: a base including a front base member, a rear base member, and a central axial base member extending between and interconnecting the front and rear base members,
wherein the front base member, the rear base member and the central axial base member lie in a common plane oriented parallel to the support surface, wherein the rear base member includes a central section that is interconnected with the central axial base member, and a pair of end sections that extend rearward and laterally relative to the central section,
wherein each end section terminates in an outer end; a roller arrangement on the base, wherein the roller arrangement includes at least one front glide or roller secured to the front base member on the central axial base member, and a pair of rear glides or rollers secured to the rear transverse base member on opposite sides of the central axial base member,
wherein the front and rear glides or rollers engage the support surface; wherein the front glide or rollers are configured relative to the central axial base member and to the front base member so as to guide movement of the mobile desk on the support surface,
and wherein the rear glides or rollers are configured relative to the central axial base member and relative to the central section of the rear base member so as to guide lateral movement of the mobile desk on the support surface; an upwardly extending seat support member defining a lower end secured to the base; an upwardly extending work-surface support member defining a lower end secured to the base forwardly of the seat support member; a seat secured to and supported above the base by the seat support member,
wherein the seat includes a seat portion and a back portion,
wherein the rear rollers are interconnected with the end sections of the rear base member and are located toward the outer ends of the end sections, and are positioned so as to be located outwardly and rearwardly relative to the seat; a handle arrangement; a back portion of the seat; a work-surface secured to and supported above the base by the work-surface support member;
wherein, upon application of force on the handle arrangement or the back portion of the seat by a user, the user is able to move the mobile desk on the support surface, axially or laterally, or axially and laterally,
wherein the glide or rollers are incorporated in end-type casters and wherein the casters interconnected with the rear base member are configured to prevent rotation of wheels associated with the rear casters in response to the weight of a user when the seat is occupied by the user, and to allow rotation of the rear caster wheels when the seat is unoccupied.

2. The mobile desk of claim 1, wherein the mobile desk is configured to enable the user to grasp the back section of the seat for moving the desk on the support surface.

3. The mobile desk of claim 1, further comprising a seat height adjustment arrangement interposed between the seat and the seat support member, and a work-surface height adjustment arrangement interposed between the work-surface and the work-surface support member.

4. The mobile desk of claim 3, wherein the seat height adjustment arrangement comprises a cylinder assembly configured to vary the height of the seat.

5. The mobile desk of claim 3, wherein the work-surface support member comprises a tubular member defining an internal passage, and wherein the work-surface is mounted to the work-surface support member via a stem depending from the work-surface and received within the internal passage of the work-surface support member, and wherein the work-surface height adjustment arrangement includes a variable position engagement arrangement interposed between the stem and the work-surface support member.

6. The mobile desk of claim 1, wherein the mobile desk is used to reconfigure the orientation or grouping, or orientation and grouping, of such mobile desks in a room, into one or more arrangements to facilitate interaction between one or more of the users, the sides of the room; a person or persons addressing the room; equipment in the room; equipment on the mobile desk.

7. A system for reconfiguring a room, which uses one of more of the mobile desks of claim 6.

8. A system for reconfiguring a room, which uses one or more mobile desks of claim 1.

9. A mobile desk of claim 1, wherein a handle provides for the storage of items; a coat or bag hook.