Patent ID: 7520347

Claim:
A stair chair for transporting a person up and down a flight of stairs and over a ground surface, said stair chair comprising: a main frame; a glide track assembly to support the stair chair for movement on the stairs, and pivotally connected to the main frame for pivotal movement between open and closed positions, said glide track assembly having at least one endless glide track, wherein said at least one glide track comprises teeth; and an adjustable glide track resistance and braking device engaging said at least one endless glide track, said device is configured to infinitely adjust an amount of resistance applied to said endless glide track between 0 to 100% resistance and to set a desired rolling resistance applied to said endless glide track, wherein said adjustable glide track resistance and braking device comprises at least one gear which meshes with said teeth of said at least one glide track.