A foldable chair, comprising a seat portion and a telescopic side wall includes rings of varying diameters consecutively arranged. A topmost ring is mounted to a bottom surface of the seat portion and has a smallest diameter. A bottommost ring has a largest diameter. In deployed position, the telescopic side wall is opened or partially folded to set and lock a desired height of the chair. In fully retracted position all of the rings are disposed adjacent the bottom surface of the seat portion. Each ring is an integral unit configured with a locking arrangement that selectively locks it to an adjacent ring. In some embodiments, a security lock centrally disposed along a height of the chair substantially perpendicular to the varying diameters of the rings secures the locking arrangement. A table uses the foldable chair as a leg and can store several, for example four, foldable chairs.

An ergonomically designed space saving, collapsible multi-function travel-friendly modular workstation for supporting a broad range of electronic systems, reading materials and the like for users while standing, sitting or on-the-go, and fits in anywhere, anytime is presented. The workstation comprises a support unit, telescopic rod and tripod and is designed to provide needed cooling and ventilation for electronic systems, support healthy postures, and complete comfort and versatility of a multi-function workstation with all the important things needed when working at a desk, thereby improving a user's comfort when using the workstation. Further, the workstation is designed for easy transportation, storage and set up, as well as provide a versatile workspace for a user in many different environments, for everyday use such as note taking, writing, reading, presentations, performing arts and rehearsing while playing a musical instrument, music or conductor stand, etc.

A post engageable table system is provided where one or two half sections of a table are removably engageable to one or both sides of an upright support post. Compressive fasteners adjacent recesses on a contact edge of each table half section are positionable to a compressive engagement with a second side of the post wherein they can be engaged, removed, or adjusted for height in such an engagement.

The present invention provides an improved table structure, which comprises: a central post, formed as a straight post and composed by plural insertion posts, the top thereof is formed with a head portion, and a power cable is provided inside the central post for being connected to a power source; a table stand, installed at the bottom of the central post, formed in a gradually expanded state; a first layer of table surface, fastened at a proper location on the central post, the center thereof is formed with a through hole; and at least two layers of rotary plates, respectively installed at the portion of the central post defined above the first layer of table surface and at a proper location on the central post defined above the lower layer of rotary plate, the center thereof is formed with a through hole corresponding to the insertion post.

A platform assembly that attaches to a shaft. The platform assembly includes a hub that is mounted in a fixed position. Cradle supports extend from the hub. The cradle supports define open troughs having open tops between opposing side surfaces. Support arms are provided that are connected to the cradle supports with pivot connections. The pivot connections enable the support arms to rotate between an open position and a folded position. In the open position, each of the support arms lay flush in the open troughs. In the folded position, each of the support arms are angled away from the open trough. A flexible panel is supported by the support arms. The flexible panel is held taut in a horizontal plane when the support arms are in their open positions. The flexible panel is folded and collapsed when the support arms are moved to their folded positions.

Disclosed are various embodiments for a table base. In one embodiment, a table base has a bottom surface portion configured to contact a supporting surface. The table base has a top surface portion configured to support and retain a smooth removable surface. The table base has an elongated shaft attached to the top surface portion and the bottom surface portion. The elongated shaft is tapered inward from the bottom surface portion and tapered outward to the top surface portion.

Device workstations with multi-way leveling adjustability, arcuate base, and accessory attachment features are described.

A table assembly comprising a telescoping leg assembly having upper and lower ends and forming an internal passageway and further including a plurality of leg members, at least a first leg member is adapted to slide telescopically with respect to at least a second of the leg members along a substantially vertical extension axis between an extended position and a retracted position, a spring that generates a variable spring force, the spring having first and second ends, aligned substantially parallel to the vertical extension axis and located within the internal passageway, a rotatable cam member supported by the leg assembly and operatively linked with the spring, the cam member and spring applying a force tending to drive the leg assembly into the extended position, a worksurface mounted to the upper end of the leg assembly and a lock adapted to prevent leg members from sliding telescopically with respect to one another when engaged.

A lifting device including a first platform, a second platform, a gas spring and a locking device is provided. The first platform includes a base and a first column connected to each other. The second platform includes a working table and a second column connected to each other. The second column and the first column are movably connected. The second column has a plurality of engaging holes. The gas spring includes a first end and a second end opposite to each other. The first end connected to the first column, and the second end connected to the second column. The locking device partially disposed at the first column, and a portion of the locking device being adapted to penetrate the engaging holes to fix a relative position between the second column and the first column.

A mobile workstation comprises a wheeled base, a height-adjustable post assembly fixedly coupled to the rear end of the wheeled base, and a tray assembly fixedly coupled to the top of the post assembly. The post assembly has a four-post construction, with upper and lower vertical posts pivotally connected to a pair of linking posts. To accommodate different users, the post assembly is designed to articulate between an upper position and a lower position through a primarily vertical travel path. The four-post construction of the post assembly disperses the weight of the tray assembly, thereby reducing the manual force required to implement height adjustment. The planar, primarily vertical, travel path undertaken by the post assembly during height adjustment maintains the workstation center of gravity to a centralized location in the base, thereby minimizing the use of counterbalances to ensure stability. As a result, the workstation is lightweight and easily maneuverable.