Abstract: A table includes a tabletop and a leg assembly to support the tabletop. The leg assembly comprises first and second supports movably connected to the tabletop. The first support includes a first bar and the second support includes a second bar. The first and second bars are pivotally connected to the first bar. The leg assembly also includes a mechanism for adjusting a height of the leg assembly. The mechanism includes a first coupling piece disposed at the first bar and a second coupling piece pivotally connected to the second bar. One of the first and second coupling pieces includes multiple positioning slots. The other of the first and second coupling pieces is selectively engageable with any one of the positioning slots. Engagement with different positioning slots changes an angle between the first and second bars and consequently changes the height of the leg assembly.

Abstract: A blow-molded unitary structure includes a panel having first and second panel walls and a generally hollow interior between the first and second panel walls. The structure also includes one or more different types of strengthening elements monolithically formed with the panel and across a substantial portion of the panel to enhance the strength of the structure. A strengthening element can be a depression recessing from the second panel wall toward an interior of the panel, a protrusion protruding from the second panel wall toward an exterior of the panel, a rib protruding outwardly toward the exterior of the panel and a trench formed by side walls of adjacent protrusions.

Abstract: A picnic table includes first and second structures detachably connected to each other by linking assemblies. One of the first and second structures is a table and the other of the first and second structures is a bench. A linking assembly includes a linking member, which has a first end portion connected to the first structure and a second end portion detachably connected to the second structure. When the second end portion is disconnected from the second structure, the linking member is retractable or rotatable toward the first structure.

Abstract: A picnic table includes first and second structures detachably connected to each other by linking assemblies. One of the first and second structures is a table and the other of the first and second structures is a bench. A linking assembly includes a linking member, which has a first end portion connected to the first structure and a second end portion detachably connected to the second structure. When the second end portion is disconnected from the second structure, the linking member is retractable or rotatable toward the first structure.

Abstract: 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.

Abstract: A table includes a tabletop and a frame supporting the tabletop. The frame includes a mounting assembly, first and second leg assemblies coupled with the mounting assembly, and first and second supporting assemblies to control rotation of the first and second leg assemblies. The frame also includes one or more couplers disposed at a mounting member of the mounting assembly to connect the mounting assembly with the first and second supporting assemblies or to connect the mounting assembly with the tabletop.

Abstract: A foldable table includes a supporting frame, tabletop and auxiliary support. The supporting frame includes first and second mounting assemblies pivotally connected to each other. The tabletop includes first and second panels coupled with the first and second mounting assemblies such that the first and second panels are rotatable with respect to each other between a folded position and an unfolded position. The auxiliary support includes an auxiliary bar and one or more linking assemblies. The auxiliary bar is coupled with the supporting frame, and each of one or more linking assemblies is coupled with the first and second panels. When the first and second panels are in the unfolded position, each of the one or more linking assemblies abuts the auxiliary bar toward the first and second panels. As such, the auxiliary support provides support to the first and second panels and enhances stability of the foldable table.

Abstract: A foldable frame includes first and second mounting assemblies pivotally connected to each other and rotatable with respect to each other between a folded position and an unfolded position. A foldable frame also includes one or more retainers. A retainer has a first coupler and a second coupler, with one disposed at the first mounting assembly and the other at the second mounting assembly. When the first and second mounting assemblies are in the folded position, the first and second couplers of each retainer engage with each other, and thus retain the first and second mounting assemblies in the folded position and prevent the foldable frame from accidental unfolding.

Abstract: Disclosed are adjustable supports and frames. An adjustable support includes an inner bar, an outer bar and a locking/unlocking mechanism for controlling the relative movement of the inner and outer bars. The locking/unlocking mechanism includes a casing pivotally connected with the outer bar, a pin coupled with the casing, and an elastic member to engage the pin with the inner and outer bars.

Abstract: A table includes a tabletop and a frame supporting the tabletop. The frame includes a mounting assembly, first and second leg assemblies coupled with the mounting assembly, and first and second supporting assemblies to control rotation of the first and second leg assemblies. The frame also includes one or more couplers disposed at a mounting member of the mounting assembly to connect the mounting assembly with the first and second supporting assemblies or to connect the mounting assembly with the tabletop.

Abstract: A frame includes first and second mounting assemblies pivotally connected with each other. The frame also includes first, second and third leg assemblies. The first leg assembly is pivotally connected the first mounting assembly. The second leg assembly is pivotally connected with the second mounting assembly. The third leg assembly is pivotally connected with both of the first and second mounting assemblies. The frame further includes one or more supporting assemblies to enhance stability of the frame. A supporting assembly includes first, second and third members and a controller. The first member is connected with the third leg assembly. The controller is connected with the first member and selectively movable along the first member. The second member is pivotally connected with the controller and the first mounting assembly, and the third member is pivotally connected with the controller and the second mounting assembly.

Abstract: A foldable frame includes first and second mounting assemblies pivotally coupled with each other at their proximal sides. The foldable frame also includes first, second and third leg assemblies, each having an upper member coupled with one or more of the first and second mounting assemblies and a base member abutting a ground when in use. The upper members of the first, second and third leg assemblies are substantially parallel to each other, with a distance between the upper members of the first and third leg assemblies different than a distance between the upper members of the second and third leg assemblies. As a result, when folded, the base members of the first, second and third leg assemblies are disposed side by side along a longitudinal direction of the foldable frame.

Abstract: A portable structure includes a main body, a ridge coupled or formed with the main body and a supporting assembly with a mounting bar disposed adjacent to the ridge. The portable structure also includes a handle coupled to one or more of the ridge, main body and mounting bar by first and second connectors. Each connector includes a first connecting piece connected to the ridge and a second connecting piece coupled or formed with the first connecting piece. The handle includes first and second attachment portions connected to the first and second connectors, respectively, and a gripping portion between the first and second attachment portions to facilitate grasping of the handle.

Abstract: A frame unit includes first and second bars spaced apart from each other, third bars disposed between the first and second bars, and connectors removably connecting the third bars with the first and second bars. A connector includes a body fixedly connected with the first or second bar, a casing defining an interior to receive an end of a third bar, and a slot allowing insertion of the end of the third bar into the casing. The interior defined by the casing has narrow and wide sides corresponding to the narrow and wide sides of the end of the third bar. As such, when the end of the third bar is inserted into the casing, the end of the third bar is prevented from any translational movement within the casing. The connectors allow quick and easy connection of bars, and in the meantime enhance the stability of the frame unit.

Abstract: A frame includes a mounting assembly having a plurality of mounting members connected to or integrally formed with each other. The frame also includes first and second leg assemblies pivotally connected with the mounting assembly at first and second sides of the mounting assembly, respectively. The first and second leg assemblies are foldable into an interior defined by the mounting assembly and, when folded, are substantially on the same plane as the mounting assembly. The frame further includes one or more supporting assemblies to help stabilize the first and second leg assemblies and support the mounting assembly when the frame is unfolded. Thus, the frame is compact when folded and stable when in use.

Abstract: A blow-molded unitary structure includes a panel having first and second panel walls and a generally hollow interior between the first and second panel walls. The structure also includes one or more different types of strengthening elements monolithically formed with the panel and across a substantial portion of the panel to enhance the strength of the structure. A strengthening element can be a depression recessing from the second panel wall toward an interior of the panel, a protrusion protruding from the second panel wall toward an exterior of the panel, a rib protruding outwardly toward the exterior of the panel and a trench formed by side walls of adjacent protrusions.

Abstract: A blow-molded unitary structure includes a panel having first and second panel walls and a generally hollow interior between the first and second panel walls. The structure also includes one or more different types of strengthening elements monolithically formed with the panel and across a substantial portion of the panel to enhance the strength of the structure. A strengthening element can be a depression recessing from the second panel wall toward an interior of the panel, a protrusion protruding from the second panel wall toward an exterior of the panel, a rib protruding outwardly toward the exterior of the panel and a trench formed by side walls of adjacent protrusions.

Abstract: A roller assembly includes at least one roller, an L-shaped board and at least one L-shaped fixing member. The L-shaped fixing member is fixed on the L-shaped board; and the roller is fixed and connected on the L-shaped board through the L-shaped fixing member. A package includes a box and the roller assembly. The box contains at least one hole and the roller protrudes from the hole. Further, the package is used as follows. The box is opened and the matter to be packaged is put into the box. Then the roller assembly is placed into the box, and the roller assembly is sandwiched between the box and the matter. Next, the roller(s) is aligned with the hole(s). Subsequently, the box and the matter are compressed to make the roller(s) protrude from the hole(s). Finally, the box are sealed from the bottom surface to complete the package.

Abstract: A foldable supporting frame includes an upper frame and a plurality of legs disposed below the upper frame when unfolded to support the upper frame. The upper frame includes a plurality of bars, with adjacent bars in the plurality of bars coupled to each other or integrally formed with each other at their adjacent end portions. Each of the plurality of legs is coupled with a corresponding bar in the plurality of bars and independently rotatable about an axis defined by the corresponding bar. When folded, the plurality of legs is disposed in an interior defined by the upper frame.