To produce an elliptical bicycle that can be used by persons of all ages safely, comfortably and easily, a bicycle with simple and original mechanisms has been created, allowing the user to feel safe when mounting the bicycle and to be able to handle same with ease and pleasure and to enjoy the journey. Using these original designs and mechanisms, a compact bicycle has been created, which is made easy and safe to move from one place to another by the ability to lower the handlebars and at the same time collapse the steering column and by a simple, silent, compact drive system formed by footboards, pedals, a bottom bracket and wheels. The bicycle has the advantage of providing easy and safe travel and has a gear-shifting system that can have between 3 and 12 different speeds and a caliper braking system on the rear and front wheels.

Proposed is a wheeled vehicle comprising a frame (2), at least one driving wheel (3) mounted on the frame (2) and swinging pressure levers (5) mounted on the frame (2), and connected to the driving wheel (3) by linkages (12), wherein the swinging pressure lever (5) is a two-arm lever, the first arm (6) of which is designed to apply a muscular force thereto, and a two-arm driving lever (8) is rotatably mounted on the second arm (7), wherein the linkage (12) is connected by the first arm (11) of the driving lever (8) on the first end thereof, and on the second end (28) thereof it is connected to a linkage (12) reset element (30) via a movable sleeve mounted on a shaft (14) of the driving wheel (3) and rotatable in one direction, and the second arm (15) of the driving lever (8) is connected to a driving lever (8) takeup unit.

A device for bicycles or other pedal-powered vehicles is fitted with at least one crank that has a pedal at one end and a crank box on the other. The crank box is fitted with a flute and contiguous to a fixed structure fitted with a pin. The movement of the crank is limited by the pin's movement in the flute. The crank box has a torsion spring nested within it. The device is fitted with a braking mechanism of the crankshaft's sprockets, in that these sprockets engage with sprockets of a transmission box, connecting the transmission box to the toothed shaft's box. The sprockets of the transmission box, in turn, transmit their movement to the outer shaft.

A device for bicycles or other pedal-powered vehicles is fitted with at least one crank that has a pedal at one end and a crank box on the other. The crank box is fitted with a flute and contiguous to a fixed structure fitted with a pin. The movement of the crank is limited by the pin's movement in the flute. The crank box has a torsion spring nested within it. The device is fitted with a braking mechanism of the crankshaft's sprockets, in that these sprockets engage with sprockets of a transmission box, connecting the transmission box to the toothed shaft's box. The sprockets of the transmission box, in turn, transmit their movement to the outer shaft.

Vehicle (110) including a frame (114), a seat mounted to the frame (114), wheels (116, 118) rotatably mounted on the frame (114), and drive mechanisms (112) for causing rotation of one wheel (116). Each drive mechanism (112) includes an arm (132) pivotally attached to the frame (114) at one end, a weight (136) and attached pedal (138) at an opposite end of the arm (132), and a guide member (142) including a bump (150) and that moves in conjunction with movement of the weight (136). The guide member (142) has a first end region at which it is pivotally attached to the frame (114) and a second, opposite end region which is free. A roller (140) attached to the arm (132) moves along the guide member (142) during pivotal movement of the arm (132) to cause pivoting of the guide member (142) as the roller (140) engages with the bump (150). An energy transfer system (148) converts pivotal movement of the guide member (142) into motive power to rotate the wheel (116).

A transportation means comprises a device for converting a reciprocating rectilinear motion into a single-direction circular motion, a power output mechanism and two co-axially arranged rotating shafts; a circular motion output mechanism of the device is in drive connection with the power output mechanism; each reciprocating rectilinear motion mechanism includes an elongated pedal; a bendable portion is disposed at the end of the elongated pedal distant from the device for converting a reciprocating rectilinear motion into a single-direction circular motion; the bendable portion is in rotational connection with the rotating shaft by means of a torsional spring, so that when the bendable portion rotates around one rotating shaft, the end of the elongated pedal proximate to the device for converting reciprocating rectilinear motion into single-direction circular motion performs small-curvature near-rectilinear motion. The transportation means enables a rider to ride more comfortably with less effort.

Vehicle including a frame, a seat mounted to the frame, wheels rotatably mounted on the frame, and drive mechanisms for causing rotation of one wheel. Each drive mechanism includes an arm pivotally attached to the frame at one end, a weight and attached pedal at an opposite end of the arm, and a guide member including a bump and that moves in conjunction with movement of the weight. The guide member has a first end region at which the guide member is pivotally attached to the frame and a second, opposite end region which is free. A roller attached to the arm moves along the guide member during pivotal movement of the arm to cause pivoting of the guide member as the roller engages with the bump. An energy transfer system converts pivotal movement of the guide member into motive power to rotate the wheel.

Vehicle including a frame, a seat mounted to the frame, wheels rotatably mounted on the frame, and drive mechanisms for causing rotation of one wheel. Each drive mechanism includes an arm pivotally attached to the frame at one end, a weight and attached pedal at an opposite end of the arm, and a guide member including a bump and that moves in conjunction with movement of the weight. The guide member has a first end region at which the guide member is pivotally attached to the frame and a second, opposite end region which is free. A roller attached to the arm moves along the guide member during pivotal movement of the arm to cause pivoting of the guide member as the roller engages with the bump. An energy transfer system converts pivotal movement of the guide member into motive power to rotate the wheel.

A drive mechanism for connecting a crank arm of a bicycle crankset or the like to a crankshaft, in a selected one of at least two modes. In one available mode, a crank arm is oriented to the crankshaft at a fixed angle about the axis of rotation of the crankshaft. In another available mode, a crank arm can be rotated freely about the crankshaft in a first direction but is connected drivingly to the crankshaft by a pawl so as to rotate the crankshaft in an opposite second direction. In a third available mode, the pedal crank arm is free to rotate in either direction with respect to the crankshaft through a limited angle of rotation beyond which a pawl in one member of the drive mechanism will engage another member and cause the crank arm to rotate the crankshaft.

An electric bicycle (10), which is a vehicle including a crank pedal (79) which receives an input from a leg of a rider, a rear wheel (78) to which power input to the crank pedal (79) is transmitted, and a motor (M) which outputs power to be transmitted to the rear wheel (78), is switchable between an EAB driving state as a first driving state in which the rear wheel (78) is driven by at least the power input to the crank pedal (79), and an EV driving state as a second driving state in which the rear wheel (78) is driven by the power of the motor (M) alone.