Patent ID: 6347803
Filing Date: 2002-02-19
Classification: B62M

Abstract:
A bicycle comprising;a frame; a steerable front wheel rotatably attached to said frame; a first sprocket, said first sprocket carried by said frame and rotatable relative thereto; a rear wheel assembly comprising a bracket pivotally attached to said frame and a rear wheel rotatably carried by said bracket; a first transmission mounted on said bracket, said first transmission comprising: a housing mounted on said bracket a first bevel gear secured within said housing a second sprocket operatively mounted on said bracket for rotation relative thereto; a chain operatively engaging said first and second sprockets; a first shaft secured to said second sprocket, extending axially through said second sprocket and rotatable relative thereto; a transverse bar fixed to said first shaft and bearing at least one pinon gear in engagement with said first bevel gear; a second bevel gear in engagement with said at least one pinon gear; a second shaft axially secured at a proximal end to said second bevel gear, rotatable relative to said housing; a third sprocket secured to a distal end of said second shaft; means to rotate said rear wheel in response to rotation of said third sprocket.