A height adjustable desktop includes an upper work surface platform, and a base platform, which configured to rest on an existing desk, platform, surface, or table. The height adjustable desktop further includes a height adjustment mechanism that includes two sets of two arms that connect at pivot points along their lengths so that the arms configured to move in a scissoring motion to raise and lower the upper work surface platform. The height adjustable desktop also includes two actuators that apply a force to the two sets of two arms, the actuators each containing feedback sensors that provide data regarding the current position and distance each actuator has extended, retracted or moved.

A placement lifting platform includes a table board, under which a bracket, scaffolds and bases are arranged. The placement lifting platform further includes a locking structure, a constant force structure and a buffer structure. By setting the constant force structure, the buffer structure and the lock structure, a constant lifting force can be provided. The adjustability function makes the platform more convenient and smooth, its buffering avoids the unnecessary collision between parts, with the special locking structure, it has better locking effect and is practical and convenient, the use effect is optimized and the applicability is improved.

A Three-Dimensional Positioning and Holding Modular System for office and industrial work stations including embodiments of multi-rail beams and rail-arm-leg modules. The embodiments have tubes, bars, or channels arranged and connected in ways that provide improved ability to transmit torque along a long axis of the multi-rail beam while providing improved resistance to twisting under the forces of the torque.

A height adjustable work surface is described that may be utilized as a standalone desk or table, or integrated with a larger work surface to provide selective height adjustability to only a portion of a work surface. The height adjustable work surface preferably utilizes a modular trapezoidal frame structure, including trapezoid tube weldments, corner castings and machined hardened connector pins. The lift mechanism preferably includes parallelogram linkages, pneumatic gas cylinders, sliding brake bar mechanism and brake release handles to provide height adjustment functionality.

A placement lifting platform includes a table board, under which a bracket, scaffolds and bases are arranged. The placement lifting platform further includes a locking structure, a constant force structure and a buffer structure. By setting the constant force structure, the buffer structure and the lock structure, a constant lifting force can be provided. The adjustability function makes the platform more convenient and smooth, its buffering avoids the unnecessary collision between parts, with the special locking structure, it has better locking effect and is practical and convenient, the use effect is optimized and the applicability is improved.

A height adjustable table can include a plurality of legs, a lower portion, a worksurface, a height adjustable surface, and a linkage. The worksurface can be supported by the plurality of legs and can include a fixed surface and a height adjustable surface. The fixed surface can be secured to at least one of the lower portion and the plurality of legs, and the fixed surface can define a recessed portion. The height adjustable surface can be movable between a raised position and a lowered position so that the height-adjustable surface retracts into the recessed portion when in the lowered position so that the height adjustable surface is coplanar with the fixed surface. The linkage can be configured to move the height adjustable surface between the lowered position and the raised position so that the height adjustable surface remains parallel to the fixed surface.

A table arrangement includes connection mechanisms for inter-connection of height adjustable tabletops so that the tabletops are independently moveable in a stable way. Embodiments of the table arrangement can be configured so that different height adjustable tabletops can be arranged to accommodate different users' preferences. Some embodiments of the table arrangement can utilize at least one cross-member connection mechanism connected to at least one column connection mechanisms 20.

Disclosed is a hindered-to-flip-up structure for a desktop lifting platform, wherein the desktop lifting platform includes a lifting column, and a supporting plate that rises or descends with the lifting column; the hindered-to-flip-up structure is disposed on the supporting plate; the supporting plate includes a fixing plate and a flip plate in rotatable connection with the fixing plate; a limiting device is provided on the supporting plate; when the flip plate rotates downwardly, the limiting device limits the flip plate from downward rotation; the flip plate is free to rotate upwardly. Further disclosed is a desktop lifting platform adopting the hindered-to-flip-up structure. The disclosures offer advantages of better protecting the desktop lifting platform and protecting items on the desk from being excessively crushed and crashed. The disclosures are mainly placed on a work platform such as a desk.

A height adjustable device including a counterbalance mechanism configured to he affixed adjacent to a rear portion of a vertical support member, a worksurface configured to he affixed adjacent to a front portion of the vertical support member, and a mounting member configured to slidably couple the worksurface to the counterbalance mechanism; wherein a portion of the mounting member extends through an opening defined in the vertical support member.

A height adjustable device including a counterbalance mechanism configured to be affixed adjacent to a rear portion of a vertical support member, a worksurface configured to be affixed adjacent to a front portion of the vertical support member, and a mounting member configured to slidably couple the worksurface to the counterbalance mechanism; wherein a portion of the mounting member extends through an opening defined in the vertical support member.