DOUBLE FOUR-WHEELED BICYCLE DRIVEN BY CYCLISTS BEING IN LYING POSITION

摘要

Novelty: A double four-wheeled 828 TKB-type bicycle used by two bicyclists seating one aside to another, in a lying position. The double S2S TRB bicycle is provided with the chassis (1) which -compared to the existing ones- prevails by the small length of its wheelbase (2) (distance between front wheel shaft 2 and rear wheel shaft 3) and makes the vehicle be more flexible via regulations carried outon the crankset (5), the back (8) of the seat of each cyclist, the members of the suspension mechanism (22, 24) and the independent adjustable transmission ratio-speeds. Furthermore said chassis (1) is liable to provide: enhanced stability for the vehicle while riding in a straight course; flexibility for the vehicle while manoeuvering; comfort, pleasure and greater energetic performance for cyclists thanks to the multiple ergonomic regulations and the suspension provisions (23) of the rear wheels (3) provided.