Patent ID: 7866677

Claim:
A rollator with a variable width track comprising: a) first and second lower support members; b) a main pivot connecting said first and second support members; c) two substantially vertical members, each having a first and a second end, and each connected at or near said first ends to at least one of said lower support members and each connected at or near said second ends to at least one user support member; d) first and second rear wheel assemblies, one of which is connected to said first lower support member, and the other of which is connected to said second lower support member; e) first and second front wheel assemblies, each of which are connected to at least one of said lower support members at points forward from said rear wheel assemblies; f) a first strut having a substantially fixed first length and first and second ends, which is pivotably connected at or near said first end to said first rear wheel assembly and pivotably connected at or near said second end at or near said main pivot; g) a second strut having a substantially fixed second length and first and second ends, which is pivotably connected at or near said first end to said second rear wheel assembly and pivotably connected at or near said second end at or near said main pivot; wherein said lower support members can be pivoted into: a closed position such that said lower support members are at a minimum allowable angle relative to each other; a fully open position in which said lower support members are splayed at the maximum allowable angle relative to each other and said rear wheels are oriented in the direction of travel and the space between said lower support members is free of obstacles; at least one intermediate position in which lower support members are splayed at an angle between said minimum and maximum allowable angles and said rear wheels are oriented in the direction of travel during operation and the space between said lower support members is free of obstacles.