Pedal powered wheeled vehicle

摘要

A bicycle having rotatable drive member in the form of a hollow drum (22) with pedals (48, 49). Each pedal is mounted in a foldable manner to a crank arm (24, 25) which in turn is mounted to the drum (22) by a pivoting mechanism (26, 27) allowing the pedals to be moved between an operative configuration in which each pedal projects outwardly from the drum (22), and an inoperative configuration in which each pedal (48, 49) and each crank arm (24, 25) is contained within the interior of the drum (22). The bicycle can thus be used as a training aid without the use of pedals, or in a conventional manner.

主权项

1. A training bicycle for propulsion by a rider by the rider's feet engaging the ground and alternately by the rider using pedals, the bicycle having a frame, a first wheel mounted on a rear of the frame, a second wheel mounted on a front of the frame, handlebars mounted on the frame and connected to steer the second wheel, and a saddle mounted on the frame, wherein a rotatable member is mounted on the frame by means of a bearing, for rotation with respect to the frame about a transverse axis of rotation, the rotatable member being drivingly coupled to the first wheel by means of a chain or belt, a first crank assembly connected to one end of the rotatable member and comprising a first crank arm joined at one end to said one end of the rotatable member and at the other end to an associated first crank arm lever on which is mounted a first pedal; the first crank arm being connected to the rotatable member for pivoting about a first pivot axis; and the first crank arm lever being connected to the first crank arm for pivoting about a second pivot axis; and a second crank assembly connected to the other end of the rotatable member and comprising a second crank arm joined at one end to said other end of the rotatable member and at the other end to an associated second crank arm lever on which is mounted a second pedal; the second crank arm being connected to the rotatable member for pivoting about a third pivot axis; and the second crank arm lever being connected to the second crank arm for pivoting about a fourth pivot axis; the rotatable member having a hollow interior which is open at both axial ends;
wherein each crank assembly is arranged to be manipulated between an operative configuration for driving the rotatable member in rotation by pedalling, and an inoperative configuration in which the crank assembly extends through the respective open end of the hollow interior of the rotatable member and the crank arm and its associated pedal are at least partially contained within the interior of the rotatable member; and wherein: in the operative condition of each crank assembly, each crank arm projects radially outwardly from the rotatable member, each crank arm lever projects longitudinally from its associated crank arm and each pedal projects generally perpendicularly from the pedal's associated crank arm lever; and in the inoperative condition of each crank assembly, each crank arm is folded so as to project generally radially inwardly inside the rotatable member and each crank arm lever is folded so that each pedal extends generally parallel to the pedal's associated crank arm.