13 patents in this list

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Modern standing desk designs must precisely synchronize multiple lifting columns while managing loads up to 150kg across variable heights from 60cm to 130cm. The challenge intensifies with asymmetric weight distribution, where even small timing differences between actuators can create binding forces that stress components and compromise smooth operation.

The fundamental engineering challenge lies in maintaining precise synchronization between lifting mechanisms while accommodating varying loads and preventing mechanical binding during height transitions.

This page brings together solutions from recent research—including telescoping leg designs with integrated feedback systems, load-sensing adjustment mechanisms, and modular architectures that optimize component synchronization. These and other approaches focus on creating reliable, smooth transitions while maintaining stability across the full range of motion.

1. Electric Height-Adjustable Desk with User-Assembly Frame and Slidable Drawer Mechanism

LOCTEK ERGONOMIC TECHNOLOGY CORP., 2022

An electric height-adjustable desk that can be assembled by a user after purchase, bringing good experiences to the users. The desk includes a frame, an outer frame, a connection rod perpendicular to the crossbar, and a drawer slidably connected in the mounting groove.

2. Height-Adjustable Workstation with Synchronized Upper and Lower Desk Movement and Protruding Upper Desk Design

aeris GmbH, 2022

A height-adjustable workstation designed for quick transitions between seated and standing positions, promoting active working. The workstation features an upper and lower desk attached to a height-adjustable frame. The upper desk protrudes into the lower desk's work area, allowing an ergonomic seated position without obstruction from the upper desk when standing. The height adjustment is synchronized, so the upper desk moves above the lower desk as the frame raises.

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3. Adjustable Screen Support Frame with Rotating and Movable Support Member Incorporating Friction and Engagement Mechanisms

OXTI CORPORATION, 2022

A screen support frame that enables adjustment of the screen's vertical position, angle, and rotation. The frame includes a rotating and movable support member connected to the base. The support member features a rotating portion with protrusions and stops that engage with holes and recesses to allow rotation. It also has a moving portion with projections and friction members that engage with tracks and troughs to facilitate vertical movement. A screen fixing portion attaches to the projection and includes adjustable elastic and friction members for screen angle adjustment. The frame enclosure has friction tracks that engage the friction members to increase friction and prevent unintended movement. This design allows for vertical, rotational, and angular adjustment of the screen.

4. Height-Adjustable Table with Lever-Activated Elevation Mechanism

Linak A/S, 2022

Height-adjustable tables/desks that are easy to adjust. The tables/desks are attached to a housing with a lever arm extending from a body portion that allows the user to initiate raising and lowering of the desk.

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5. Electric Lifting Desk with Three-Section Telescopic Nested Tube Legs

Jiaxing Haihong Mechanical and Electrical Technology Co., Ltd, 2020

An electric lifting desk with three-section legs reduces weight and cost compared to conventional electric desks. The legs are made of nested aluminum or plastic tubes with an interconnected cavity. An electric pushing rod retracts to extend the legs. The smallest inner tube nests inside the middle tube, which nests inside the largest outer tube. This allows the legs to telescope out and retract. The nested tube design saves weight compared to a solid leg and allows using smaller smaller-diameter tubes. The nested legs can also have a smaller motor and electric system compared to a single-column desk.

6. Lifting Desk with X-Shaped Supports and Adjustable Sliding Upper Ends for Load-Responsive Stability

Shenzhen Minicute Technology Co. Ltd., 2020

A lifting desk with adjustable lifting power to prevent instability and manual lifting issues caused by varying desk loads. The desk has X-shaped lifting supports with articulated middle sections connecting the upper and lower ends. The upper end of each X-section slides on the desk support and the lower end articulates to the leg. This allows the lifting power to be adjusted by sliding the upper end up or down on the support based on the desk load.

7. Height-Adjustable Desk with Scissor-Linked Folding Legs and Pneumatic Lift Mechanism

HANGZHOU LANDA CRAFTS CO., LTD., 2019

A compact height-adjustable desk that can be folded flat when not in use. The desk has a desktop platform, a base frame, and two sets of scissor-linked support legs. The legs pivot and fold inwards when the desk is lowered. To compactly fold the desk, the legs pivot and fold inwards when the desk is lowered. A pneumatic cylinder and actuating lever are used to lift the desk. The lever pivots at the desk and base frame, with the cylinder pivoting at the desk. This allows a large torque to lift the desk when folded. The lever's corner acts as the pivot, fitting compactly when folded. The folding mechanism allows the desk to adapt to users of different heights and work postures, preventing occupational diseases. The compact folding allows the desk to be placed on an existing desk without obstruction.

8. Desktop Workstation with Sensor-Driven Variable Height Adjustment and Movement Analysis

FELLOWES, INC., 2018

Variable height desktop workstation system that encourages users to move more while working by providing suggestions to raise, lower, and walk around the desk based on sensors detecting movement on the surface. The system has a lift mechanism to raise and lower the desk, surface movement sensors to detect user activity, and a control unit to analyze the sensor data and suggest actions. It can also have a motor to automatically move the desk based on the analysis.

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9. Workstation with Automated Height, Depth, and Horizontal Pivot Adjustments Using User-Responsive Control System

Léon DesRoches, Nancy Lee Black, 2014

A workstation that automatically adjusts the height and depth of the tabletop to provide ergonomic benefits for users. The workstation has vertical and horizontal adjuster mechanisms to move the tabletop between standing and sitting heights. It also has a rotator to pivot the tabletop horizontally around the user. A controller detects user devices and profiles to customize the motion parameters like speed and range. This aims to automatically alternate between seated and standing positions, and pivot the tabletop around the user, based on user preferences to promote movement and reduce sedentary risks.

10. Motorized Desk System with Independently Adjustable and Synchronized Display Stand Mechanisms

ABB AB, 2014

Motorized operator desk system with synchronized, independently adjustable display stands. The desk has a work surface and a display shelf. Each display stand has individual, synchronized motorized inclination and horizontal adjustment mechanisms. This allows displays to be positioned independently and the inclination synchronized. It enables flexible display placement and adjustment without constraining the layout to a straight line. The desk also has motorized pedestal adjustment for horizontal positioning of the display shelf.

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11. Modular Furniture System with Adjustable Parallel Legs and Interchangeable Sub-Surfaces

Brian Frazier, 2007

Modular furniture system with adjustable work surfaces that allows customization and flexibility in workstation configurations. The furniture has parallel legs that can be raised and lowered, with intermediary sub-surfaces connecting the legs to the main work surfaces. This allows attaching different top surfaces or configuring leg orientations using the pre-arranged attachment points on the sub-surfaces. A cantilevered arm can also be added with its own top surface attached via the sub-surfaces. This enables adjustable dual-surface setups. The legs, sub-surfaces, and top surfaces can be interchanged to tailor the workstation to user needs.

12. Workstation with Motorized Monitor Lift and Independent Surface Height Adjustment

Norman Walter Allen, 2003

Adjustable workstation with a powered monitor lift that raises the monitor above the main work surface to improve ergonomics. The workstation has a single motorized drive unit that significantly raises the bending moment above the base. This allows the workstation to ergonomically adjust to fit people of all heights, including children and tall individuals. The powered monitor lift raises the monitor to eye level while the main work surface adjusts independently. The motorized adjustment eliminates the need for manual cranking or disassembly.

13. Chair Frame with Pivoting Seat and Backrest Carriers and Dual-Spring Locking Mechanism

Giroflex-Entwicklungs-AG, 1996

Chair frame design with adjustable seat and backrest that allows easy adjustment and locking of the seat and backrest positions. The frame has a vertical column, a pivoting device on top, and struts connecting the seat and backrest carriers to the pivoting device. The struts pivot the carriers against the force of a first spring. To lock the carriers, two parallel springs on each side of the column adjust the force. One spring end attaches to the column and the other to the backrest carrier. This allows precise adjustment and secure locking of the seat and backrest angles.

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The patents discussed here demonstrate different methods of accomplishing synchronous adjustments in standing workstations. While some concentrate on the desk structure and lifting mechanics in and of themselves, others deal with certain parts like leg designs or screen support.