Patent ID: 7296660

Claim:
An elevator for transporting a person vertically between a two floors of a building, comprising: a hoist way, a first carriage vertically moveable in the hoist way from a first vertical position to a second vertical position, a lifting mechanism coupled to the first carriage, the lifting mechanism comprising; a primary lever arm having a first end pivotally supported on a first shaft and having a second shaft carried on a second end, a secondary lever arm having a first end pivotally supported on the second shaft and having a second end coupled to the carriage, a first sprocket wheel fixed relative to the building and concentric with the first shaft and having a first diameter, a second sprocket wheel carried on the second shaft, fixed to the secondary lever arm, a first chain belt coupled to both the first sprocket wheel and the second sprocket wheel, and a motive force generator rotating the primary lever arm about the first shaft between a first angular position and a second angular position.