A jack screw system having an upper, middle, and lower jack screw, each having corresponding jack screw teeth, for raising and lowering surfaces. The telescopic expansion of the jack screw system can be achieved using an engaging gear or belt. The jack screw system is generally used with furniture but may be used to raise any appropriate surface.

A self-locking mechanism for a gearing arrangement, a gearing arrangement, an actuator, and a lifting platform, which relate to the technical field of lifting tables. The self-locking mechanism includes a casing, a self-locking gear, and a brake member, the self-locking gear meshing with the gearing arrangement, the brake member being connected between the casing and the self-locking gear; in a case where the gearing arrangement pushes the self-locking gear forwardly, the brake member releases the self-locking gear, and in a case where the gearing arrangement pushes the self-locking gear reversely, the brake member brakes the self-locking gear.

A variable height platform system comprises a frame assembly, at least two leg assemblies, a drive mechanism, and a sensor. The frame assembly is configured to support and be removably connected to a tabletop. The drive mechanism is configured to either extend or retract each leg assembly in a direction substantially perpendicular to the longitudinal axis to set a height of the frame assembly in an elevated position for use. The sensor is configured to sense position and movement of a user in a predetermined area including an area of the variable height platform system and an area proximate the variable height platform system. The controller is operatively connected to the sensor and drive mechanism. The controller is configured to operate the drive mechanism in response to the sensor sensing the position and movement of the user in the predetermined area.

The height adjustable desk according to the present disclose includes a work surface and at least one telescopic leg attached to the work surface. The telescopic leg has a motor, a gear set, a first rotator, and a second rotator. The gear set has a first gear connected to the motor and a second gear engaged with the first gear, wherein the motor transfers force to the second gear through the first gear. The first rotator is engaged with the second gear and the second rotator engaged with the first rotator. The motor rotates the first rotator through the gear set so that the first rotator can translate along a length of the second rotator. The first gear is located above the motor and the second gear is located above the first rotator.

A welding table with elevation system, powered with cordless drill, gear reducer, chain, sprockets and, ultimately turning screw posts synchronously, lifting four telescoping legs. Maximum elevated height exceeds most work benches for height matching, and a minimum height goes lower than most low tables. Folding wheel system is independent, lever operated, and works in conjunction with the elevation system. Once table rolls into position, drill is activated, braking is instant, the table lifts itself from the wheels. Wheels are then folded up, a position necessary during minimum height, as the frame gets closer to the ground. This low height enables sitting roll stool usage, and knees and legs enter the rear frame opening. Two drawers above conceal the wheels, have a lever locking system, and necessary when rolling the table. The table top is heavy, one piece removable with normal modular patterned holes throughout, and the addition of large oval holes, and top side overhang, both establishing C-Clamp usage.

An electrically adjustable table system (1) has a table and at least one electric drive (4) for adjusting the table. The table system (1) further comprises at least one sensor (10) for detecting a vibration of the table and at least one actuator (12) arranged to transmit an oscillation to the table. In addition, the table system (1) has at least one controller (11) which is arranged to evaluate data acquired by the sensor (10) and to generate a compensation signal based on the acquired data, by which the actuator (12) is driven.

The present invention relates to an improved height adjustable table which can assist and motivate the user to use the height adjustable table in a manner which increases health, calorie burn and well-being. This is done by logging how long the table has been in a standing and/or sitting range. The log can be used to calculate the calories burned during use. In another embodiment the log can be used to remind the user of the table to change position during the use of the table.

A telescopic column (100) for height-adjustable table (120), said telescopic column extending along a longitudinal axis from a first end (102) to a second end (103) of said telescopic column (100), comprising: an outer elongated tube (10) fixedly arranged at said second end (103) of said telescopic column (100), an inner elongated tube (20) having a top end (22) and bottom end (23), wherein said top end (22) defines said first end (102) of the telescopic column (100), and wherein the inner elongated tube (20) is sized and adapted to move into and out of said outer tube (10), drivable by a driving unit (150) along said longitudinal axis between a maximum height (112) and a minimum height (111), and an intermediate element (30) having a lower portion (31) being sized and adapted to engage the outer tube (10) from the inside thereof, a middle portion (32) being sized and adapted to be fitted into the inner tube (20) and engage the inner tube (20) from the inside FIG. 1a thereof, and an upper portion (33) being sized and adapted to be remain within the inner tube (20), so as to provide for stability, wherein said intermediate element (30) is passively moved by means of the inner tube (20) when said telescopic column (100) is moved between said maximum height (112) and said minimum height (111), a motor (150), substantially arranged external to the telescopic column (100), for providing rotary motion to a worm screw (156) extending into the telescopic column (100), and driving a worm wheel (66), a hollow bearing sleeve (60) drivably arranged to the worm wheel (66) from the inside thereof, and coupled to a leadscrew (50) so that the leadscrew (50) rotates about the longitudinal axis with the bearing sleeve (60) driven by the motor (150).

A furniture system having a furniture item which includes an electrically-adjustable component, a control unit and a linear actuator for adjusting a component of the furniture item is provided. The linear actuator includes a gear mechanism including a hollow element and a first stage formed as a friction wheel stage. The linear actuator further includes a motor on a drive side and an adjustment member arranged on an output side. The linear actuator, in particular the motor, the gear mechanism and the adjustment member are adapted to alter a length of the adjustment member by means of the motor and the gear mechanism. The control unit is coupled with the linear actuator and adapted to actuate the linear actuator for adjusting the component.

A linear actuator (1) with the protection mechanism includes: a motor case (10) having a case member (11) with a bottom plate (111) on which a through hole (114) is formed; a drive mechanism (20) accommodated in the case member (11); a transmission mechanism (30) having a machine core (31), a bearing (32), a base seat (33) with an extending plate (332) on which a penetrated hole (333) is formed, and a fasten unit (34) with a head part (341), the machine core (31) is connected to the drive mechanism (20), the bearing (32) is disposed on the base seat (33) and sheathes the machine core (31), the fasten unit (34) is fastened with the bottom plate (111); and a protection structure (40) sheathing the fasten unit (34) and disposed between the bottom plate (111) and the head part (341).