A system for detecting usage and position of a height adjustable work surface is disclosed that includes a smart hub device that uses a set of sensors to collect sensor data to determine whether a work area is occupied or unoccupied, and to also collect work area usage data for further analysis regarding the details of usage of the work area.

A lightweight beam structure includes a first and a second frame. The first frame includes an upper plate, two inner side plates downward bent and extended from two sides of the upper plate, two outer side plates upward bent and extended from two inner side plates respectively and two fixing plates bent and extended from two outer side plates respectively.

Each outer side plate is formed outside each inner side plate. A groove is formed between each inner side plate and each outer side plate. The second frame is connected with the first frame and includes a top plate and two intermediate plates downward bent and extended from two sides of the top plate. Each intermediate plate is received in each groove. The top plate is formed over the upper plate. Therefore, the stability is maintained and the weight is reduced so that the material costs may be decreased.

A lightweight beam structure includes a first and a second frame. The first frame includes an upper plate, two inner side plates downward bent and extended from two sides of the upper plate, two outer side plates upward bent and extended from two inner side plates respectively and two fixing plates bent and extended from two outer side plates respectively.

Each outer side plate is formed outside each inner side plate. A groove is formed between each inner side plate and each outer side plate. The second frame is connected with the first frame and includes a top plate and two intermediate plates downward bent and extended from two sides of the top plate. Each intermediate plate is received in each groove. The top plate is formed over the upper plate. Therefore, the stability is maintained and the weight is reduced so that the material costs may be decreased.

A mobile workstation with adjustable height of the present disclosure may comprise a top assembly, an adjustment assembly, and a bottom assembly. Adjustment assembly may comprise telescopically engaged segments. One or more pulleys or pulley assemblies may be disposed within one or more of the segments to allow for withdrawing and retracting segments from one another at the same rate. Actuation of the raising or lowering of the overall height of the mobile workstation may be realized through either a manual actuation or an electronic element such as a linear actuator.

A mobile workstation with adjustable height of the present disclosure may comprise a top assembly, an adjustment assembly, and a bottom assembly. Adjustment assembly may comprise telescopically engaged segments. One or more pulleys or pulley assemblies may be disposed within one or more of the segments to allow for withdrawing and retracting segments from one another at the same rate. Actuation of the raising or lowering of the overall height of the mobile workstation may be realized through either a manual actuation or an electronic element such as a linear actuator.

A travel bag assembly that utilizes a bag construct with a top surface. A retractable pull handle is provided. A depression is formed in the top surface of the bag construct. A support platform is provided that either directly fits into the depression or can be folded to fit in the depression. The support platform is connected to the bag construct by at least one adjustable shaft. The adjustable shaft enables the support platform to be selectively adjusted in elevation throughout a range above top surface of the bag construct without effecting the retractable pull handle.

A travel bag assembly that utilizes a bag construct with a top surface. A retractable pull handle is provided. A depression is formed in the top surface of the bag construct. A support platform is provided that either directly fits into the depression or can be folded to fit in the depression. The support platform is connected to the bag construct by at least one adjustable shaft. The adjustable shaft enables the support platform to be selectively adjusted in elevation throughout a range above top surface of the bag construct without effecting the retractable pull handle.

A collapsible measuring and cutting craft table enables cutting, measuring, and stowing fabric and craft materials from a foldable, height-adjustable, and mobile work surface. The craft table comprises a large, flat work surface having a center panel and two hingedly attached drop leaf panels that fold down for storage. Center support members support the center panel in a horizontal position at the desired working height. Two center support members supports the center panel of the work surface. The outer support members pivot outwardly to a support position to support the drop leaf panels. The outer support members pivot inwardly to a collapsed position to fold the drop leaf panels down perpendicularly relative to the center panel. The center support members telescopically adjust in length to height adjust the work surface. The support members terminates at wheels for mobility. Meshed baskets slide along rails that run between the center support members.

A retractable column structure includes a metal outer tubular member, a retaining bracket, and an inner tubular member. The outer tubular member includes a wall having outer, inner and end surfaces. The outer tubular member includes slots extending from the end surface to the inner surface. A rear end of each slot includes a hook protruding out of the inner surface. The retaining bracket includes a frame member abutted against the wall and locking hooks inserted into the inner surface and locked onto each corresponding hook. The inner tubular member moveably penetrates into the retaining bracket disposed between the tubular members and is concealed inside the outer tubular member. Accordingly, excellent support of inner and outer tubular members can be achieved for stable sliding therebetween.

A retractable column structure includes a metal outer tubular member, a retaining bracket, and an inner tubular member. The outer tubular member includes a wall having outer, inner and end surfaces. The outer tubular member includes slots extending from the end surface to the inner surface. A rear end of each slot includes a hook protruding out of the inner surface. The retaining bracket includes a frame member abutted against the wall and locking hooks inserted into the inner surface and locked onto each corresponding hook. The inner tubular member moveably penetrates into the retaining bracket disposed between the tubular members and is concealed inside the outer tubular member. Accordingly, excellent support of inner and outer tubular members can be achieved for stable sliding therebetween.