An elevation structure for a desk frame includes an inner tube telescopically received in an outer tube fixed to a base. The outer tube includes a bottom plate and a first top plate. A desk board unit is fixed to the inner tube. A telescopic rod is received in the inner tube and has top and bottom ends coupled to the outer and inner tubes, respectively. The inner tube extends through an upper buffer pad disposed below the first top plate. The upper buffer pad has an upper face abutting the first top plate and a lower face for abutting an abutting edge of the inner tube in the highest position. A lower buffer pad is disposed above the bottom plate and includes a lower face abutting the bottom plate and an upper face for abutting a bottom end of the inner tube in the lowest position.

An elevation structure for a desk frame includes an inner tube telescopically received in an outer tube fixed to a base. The outer tube includes a bottom plate and a first top plate. A desk board unit is fixed to the inner tube. A telescopic rod is received in the inner tube and has top and bottom ends coupled to the outer and inner tubes, respectively. The inner tube extends through an upper buffer pad disposed below the first top plate. The upper buffer pad has an upper face abutting the first top plate and a lower face for abutting an abutting edge of the inner tube in the highest position. A lower buffer pad is disposed above the bottom plate and includes a lower face abutting the bottom plate and an upper face for abutting a bottom end of the inner tube in the lowest position.

A steel wire self-locking mechanism and a lifting device are provided. The steel wire self-locking mechanism includes a surrounding plate and a self-locking gear and a locking device arranged in the surrounding plate, and uses a friction force of a threaded sleeve to lock the lifting device. The lifting device includes a lifting assembly and a beam assembly. The steel wire self-locking mechanism is arranged in the beam assembly, and the locking of the lifting device is realized by the steel wire self-locking mechanism. The steel wire self-locking mechanism and the lifting device have good adaptability. Due to a smaller volume, the steel wire self-locking mechanism is applicable to lifting tables in various sizes.

A supporting device for a height adjustable table (1) comprises a first (3) and a second supporting element (3′) respectively having a first, a second, and a third liner component (5, 5′, 6, 6′, 7, 7′) arranged in a manner displaceable relative to each other to cause a change of length (L) of the supporting elements (3, 3′). The first (5, 5′), the second (6, 6′) and the third liner component (7, 7′) are coupled such that a displacement of the second to the first liner component synchronously causes a displacement of the third to the second liner component. The supporting device comprises a synchronization device to synchronize the displacement of the second liner component (6, 6′) to the first liner component (5, 5′) or the displacement of the third liner component (7, 7′) to the second liner component (6, 6′) between the first and the second supporting elements.

A supporting device for a height adjustable table (1) comprises a first (3) and a second supporting element (3′) respectively having a first, a second, and a third liner component (5, 5′, 6, 6′, 7, 7′) arranged in a manner displaceable relative to each other to cause a change of length (L) of the supporting elements (3, 3′). The first (5, 5′), the second (6, 6′) and the third liner component (7, 7′) are coupled such that a displacement of the second to the first liner component synchronously causes a displacement of the third to the second liner component. The supporting device comprises a synchronization device to synchronize the displacement of the second liner component (6, 6′) to the first liner component (5, 5′) or the displacement of the third liner component (7, 7′) to the second liner component (6, 6′) between the first and the second supporting elements.

A quick-release device is for securing a rod of any gas cylinder into the plate of any chair, item of furniture, or other device supported by a gas cylinder and activating the rod with a button thereon. This universal quick-release device includes a sleeve in in the seat plate, an adapter fit into the sleeve, the adapter including an upper portion and a lower portion with different inner and outer diameters. The sleeve is configured to receive the lower portion of the adapter in a press-fit engagement. The upper portion is configured to receive the rod of the gas cylinder in a removable engagement.

A geologic core inspection table includes at least two legs, each including an extending portion for increasing the effective length of each leg, the extending portion at least partially concentrically disposed within or about the leg from which it extends; and a tabletop disposed above and coupled to the legs. The tabletop includes a top surface for receiving a core sample tray. At least one leg may be extended to a different height than at least one other leg.

A geologic core inspection table includes at least two legs, each including an extending portion for increasing the effective length of each leg, the extending portion at least partially concentrically disposed within or about the leg from which it extends; and a tabletop disposed above and coupled to the legs. The tabletop includes a top surface for receiving a core sample tray. At least one leg may be extended to a different height than at least one other leg.

An adjustable stand up desk includes an upper desk surface and a second desk surface connected to the upper desk surface. The desk further includes a base with at least two channels and a pair of positioning legs configured to sit on an existing desk. A folding leg assembly connects the base to the first desk surface. The folding leg assembly includes a first pair of legs that extends between the first desk surface and the base, and a second pair of legs that extends between the first desk surface and the base. Each leg of the first and second pairs of legs is configured to move within the at least two channels of the base, such that the adjustable stand up desk can be adjusted from at least a closed position to a fully raised position.

An adjustable stand up desk includes an upper desk surface and a second desk surface connected to the upper desk surface. The desk further includes a base with at least two channels and a pair of positioning legs configured to sit on an existing desk. A folding leg assembly connects the base to the first desk surface. The folding leg assembly includes a first pair of legs that extends between the first desk surface and the base, and a second pair of legs that extends between the first desk surface and the base. Each leg of the first and second pairs of legs is configured to move within the at least two channels of the base, such that the adjustable stand up desk can be adjusted from at least a closed position to a fully raised position.