Patent ID: 9510670
Filing Date: 2016-12-06
CPC Classification: A47B,F16M

Claim Text:
1. A height-adjustable table comprising: a) a work surface; b) a vertically movable frame adapted to support the work surface, the frame comprising: c) a first lower leg and a second lower leg, wherein the first upper leg telescopes within the first lower leg, and the second upper leg telescopes within the second lower leg; d) a pulley mechanism comprising: e) a spring located in the passage and having a fixed end connected to the frame and a movable end adapted to move a first distance relative to the fixed end, wherein the spring is adapted to exert an upward force on the frame over the first distance; f) a block-and-tackle assembly located in the passage, the block-and-tackle assembly comprising: g) a locking mechanism located in the passage and connected to the frame, the locking mechanism adapted to prevent the upward vertical movement of the frame by securely clamping at least one of the first tension line and the second tension line, wherein the locking mechanism comprises an actuator and is adapted to unclamp the at least one of the first tension line and the second tension line when the actuator is moved into an unlocked position and the upward force exerted by the spring on the frame is substantially equal to a downward force exerted by the frame and the work surface.