The present invention discloses combination tables and table-on-wheel structures. Each combination table includes two identical table-on-wheel structures connected side by side with two connection rods and stands firmly on grounds, roads or on object surfaces whether rough or smooth, flat or inclined. Each table-on-wheel structure includes a desktop frame; a stand frame; and two tail rods or connection rods connected together. With the implementation of the present invention, the combination tables or the table-on-wheel structures have the special benefits of being easy to set up or operate; and being able to stand firmly on the ground, no matter it is a level ground, a rough ground or a sloping ground. Each table-on-wheel structure sets firmly upon and applies to all kinds of wheels, whether large or small, and can thus be applied to all kinds of cars. With the foot frames of both the combination tables or the table-on-wheel structures folded at the first joints, convenient storage or transportations are made possible.

A table with a central extension includes a chassis, two movable trays bearing on the chassis and adapted to be moved closer to each other to constitute on their own one continuous surface, or separated symmetrically from one another, or one independently of the other to allow the set-up of one or several central extension(s) between the movable trays. The chassis is made up of two spars of variable length, two cross-beams, the cross-beams and spars assembled perpendicularly in pairs to form a horizontal frame, and four legs extending at the four corners of the frame below the latter. Each spar includes two portions, a fixed spar and a movable spar, the the spars being made up of a profiled tube with a rectangular cross-section in which extends a slide with a rectangular cross-section and have a longitudinal central groove.

A table with a central extension includes a chassis, two movable trays bearing on the chassis and adapted to be moved closer to each other to constitute on their own one continuous surface, or separated symmetrically from one another, or one independently of the other to allow the set-up of one or several central extension(s) between the movable trays. The chassis is made up of two spars of variable length, two cross-beams, the cross-beams and spars assembled perpendicularly in pairs to form a horizontal frame, and four legs extending at the four corners of the frame below the latter. Each spar includes two portions, a fixed spar and a movable spar, the the spars being made up of a profiled tube with a rectangular cross-section in which extends a slide with a rectangular cross-section and have a longitudinal central groove.

A modular tabletop apparatus, typically used for workpiece storage and handling during robotic manipulation and feeding to a machine, is disclosed. Modules of the apparatus comprise detection interfaces disposed at locations corresponding to module edge locations and arranged in a periodic grid. Alignment of facing detection interfaces along common edges of pairs of adjacent modules permits module controllers to detect neighboring modules, and a main controller to compute the overall size and shape of the tabletop formed by the modules. Connecting arrangements are also disclosed. The connecting arrangements may be placed at the same grid locations as the detection interfaces, advantageously permitting alignment of detection interfaces for any interconnection configuration of modules. Modules may comprise plates with a grid of positioning indentations. The period of the positioning grid can be an integer multiple or integer fraction of that of the interface/connection grid.

A modular tabletop apparatus, typically used for workpiece storage and handling during robotic manipulation and feeding to a machine, is disclosed. Modules of the apparatus comprise detection interfaces disposed at locations corresponding to module edge locations and arranged in a periodic grid. Alignment of facing detection interfaces along common edges of pairs of adjacent modules permits module controllers to detect neighboring modules, and a main controller to compute the overall size and shape of the tabletop formed by the modules. Connecting arrangements are also disclosed. The connecting arrangements may be placed at the same grid locations as the detection interfaces, advantageously permitting alignment of detection interfaces for any interconnection configuration of modules. Modules may comprise plates with a grid of positioning indentations. The period of the positioning grid can be an integer multiple or integer fraction of that of the interface/connection grid.

A table with a central extension includes a chassis two movable trays bearing on the chassis and adapted to be moved closer to each other to constitute on their own one continuous surface, or separated symmetrically from one another, or one independently of the other to allow the set-up of one or several central extension(s) between the movable trays. The chassis is made up of two spars of variable length, two cross-beams, the cross-beams and spars assembled perpendicularly in pairs to form a horizontal frame, and four legs extending at the four corners of the frame below the latter. Each spar includes two portions, a fixed spar and a movable spar, the spars being made up of a profiled tube with a rectangular cross-section in which extends a slide with a rectangular cross-section and have a longitudinal central groove.

A table with a central extension includes a chassis two movable trays bearing on the chassis and adapted to be moved closer to each other to constitute on their own one continuous surface, or separated symmetrically from one another, or one independently of the other to allow the set-up of one or several central extension(s) between the movable trays. The chassis is made up of two spars of variable length, two cross-beams, the cross-beams and spars assembled perpendicularly in pairs to form a horizontal frame, and four legs extending at the four corners of the frame below the latter. Each spar includes two portions, a fixed spar and a movable spar, the spars being made up of a profiled tube with a rectangular cross-section in which extends a slide with a rectangular cross-section and have a longitudinal central groove.

A supporting frame includes a mounting assembly and a plurality of leg assemblies to support the mounting assembly. The mounting assembly includes first and second mounting units, at least one of which is extendable in a longitudinal or lateral direction of the mounting assembly. In some cases, the first and second mounting units are pivotally connected to each other and each of the leg assemblies is foldable relative to the first or second mounting unit, resulting in an extendable and foldable supporting frame. A supporting structure includes a supporting frame and first and second panels connected to the supporting frame. In some cases, the supporting structure is foldable in half.

A supporting frame includes a mounting assembly and a plurality of leg assemblies to support the mounting assembly. The mounting assembly includes first and second mounting units, at least one of which is extendable in a longitudinal or lateral direction of the mounting assembly. In some cases, the first and second mounting units are pivotally connected to each other and each of the leg assemblies is foldable relative to the first or second mounting unit, resulting in an extendable and foldable supporting frame. A supporting structure includes a supporting frame and first and second panels connected to the supporting frame. In some cases, the supporting structure is foldable in half.

An expandable storage structure (10) comprises at least one extendable wall. The extendable wall comprises at least three slidably engaged panels (30, 32, 36), and at least a first and second panel (30, 32) are co-planar. At least one of the panels (30, 32, 36) is hollow and receives at least a part of at least one of the other panels (30, 32, 36). The first and second panels (30, 32) are movable relative to each other panel (30, 32, 36) in order to adjust a dimension of the wall. A linkage mechanism (34) connects the first and second panels (30, 32) and is configured to allow relative movement between the panels (30, 32, 36) while maintaining the first and second panels (30, 32) in the same plane as each other.