Automatic vertically adjustable work surface

Claim 1

A vertically adjustable work station adapted to be mounted to a wall panel having at least a pair of horizontally spaced vertically oriented support rails secured thereto, comprising: a work surface: a pair of support brackets for supporting said work surface; a first pair of elongate vertically oriented rails horizontally displaced from one another and adapted to be individually and stationarily mounted to the support rails; a second pair of elongate, vertically oriented rails individually slidably mounted to said first pair of rails: means for individually mounting said support bracket and thus said work surface to said second pair of rails: a first elongate, horizontally oriented channel member interconnecting said first pair of rails; a second elongate, horizontally oriented channel member interconnecting said second pair of rails; and drive means coupled between said first and second channel members for selectively displacing said channel members towards and away from each other to attendantly vertically displace the work surface, said driving means including gear means disposed on said first channel member, gear rotating means for rotating said gear means and linkage means connecting said gear means to said second channel member for transmitting rotation of said gear means to vertical displacement of said second channel member and attendantly said work surface; wherein said gear means includes first and second sector gears rotatably disposed on said first channel member in engagement with one another each of said sector gears having an arm extending therefrom connected to said linkage means, said second sector gear having an additional arm; further wherein said gear rotating means includes a drive screw, a threaded nut pivotably mounted on said additional arm of said second sector gear, said drive screw being threadedly engaged with said nut, and a motor for rotating said drive screw.