US Patent 7611203 Patient chair lift

A frame assembly is formed of side rails with a cross rail and spaced vertical support rails. A drive screw is positioned on the cross rail. A motor and a follower are received on the jack screw. The follower may move upwardly and downwardly on the drive screw. A chair has a seat portion and a back portion and is movable between a raised orientation and a lowered orientation on the floor. A separable securement area couples the seat portion with the follower. A control assembly includes an up button and a down button and a stop button.