A reciprocating mechanism includes a first connecting element, a crankshaft and a second connecting element. The crankshaft includes a rotation shaft, a first following element and a second following element. The first following element is pivotally disposed on one side of the rotation shaft and movably coupled to the first connecting element. The second following element is pivotally disposed on the other side of the rotation shaft, and a first angle is formed between the first following element and the second following element. The second connecting element is movably coupled to the second following element. The first following element and the second following element are configured to rotate around the rotation shaft so as to be movably coupled to and cause each of the first connecting element and the second connecting element to reciprocate and cyclically pivot along an arc-shaped trajectory.

Wheel hub arrangement for a drive with rotated drum that has a stationary shaft (13); a hollow drum (19, 20) arranged by bearings around it, a wheel drum (32) that includes a hub of the driven wheel, and freewheels, inner sleeve (21, 22) which are arranged around the stationary shaft (13) by bearings, and placed partially in the cavity of the drum (19, 20). The wheel hub arrangement for a drive with rotated drum for bicycles, street stepper vehicles, wheelchairs and tricycles.

Vehicle includes a frame, a seat arranged on the frame, a wheel rotatably mounted on the frame, an elongate directional slider, a pedal on the directional slider that slides between first and second positions, a main drive chain connected to the first wheel, a main drive sprocket that rotates the main drive chain and thus the first wheel, a flywheel that rotates the main drive sprocket, and an energy generating system that converts sliding of the pedal on the directional slider into rotational force to rotate the flywheel. The energy generating system may include a first electrical coil assembly connected to the pedal, a second electrical coil assembly in connection with the directional slider and that cooperates with the first electrical coil assembly to cause generation of electricity, and an electrical motor that is powered by the generated electricity and is coupled to the flywheel to rotate the flywheel.

Vehicle includes a frame, a seat arranged on the frame, a wheel rotatably mounted on the frame, an elongate directional slider, a pedal on the directional slider that slides between first and second positions, a main drive chain connected to the first wheel, a main drive sprocket that rotates the main drive chain and thus the first wheel, a flywheel that rotates the main drive sprocket, and an energy generating system that converts sliding of the pedal on the directional slider into rotational force to rotate the flywheel. The energy generating system may include a first electrical coil assembly connected to the pedal, a second electrical coil assembly in connection with the directional slider and that cooperates with the first electrical coil assembly to cause generation of electricity, and an electrical motor that is powered by the generated electricity and is coupled to the flywheel to rotate the flywheel.

Transmission system for a manually powered vehicle includes a pedal, an overrunning clutch system having a drum, and a power link coupled at its ends to the pedal and drum. The drum has a circular portion and a fin extending radially outward from the circular portion. The power link passes over the fin and at least a part of the circular portion and has a free portion between the fin and pedal. Movement of the pedal causes movement of the power link and rotation of the drum. A transmission member is coupled to the clutch system and a rotatable drive sprocket connected to a wheel of the vehicle. Rotation of the drum causes movement of the transmission member and rotation of the drive sprocket leading to wheel rotation. Rotation of the drum in the direction opposite to the second direction does not cause movement of the transmission member.

Transmission system for a manually powered vehicle includes a pedal, an overrunning clutch system having a drum, and a power link coupled at its ends to the pedal and drum. The drum has a circular portion and a fin extending radially outward from the circular portion. The power link passes over the fin and at least a part of the circular portion and has a free portion between the fin and pedal. Movement of the pedal causes movement of the power link and rotation of the drum. A transmission member is coupled to the clutch system and a rotatable drive sprocket connected to a wheel of the vehicle. Rotation of the drum causes movement of the transmission member and rotation of the drive sprocket leading to wheel rotation. Rotation of the drum in the direction opposite to the second direction does not cause movement of the transmission member.

A dual-pedal driven scooter includes a frame having a front end and a rear end. Front wheels and a rear wheel that are connected to the frame at the front end and the rear end, respectively. A transmission mechanism is configured to drive the rear wheel to thereby drive the scooter. A pedal is configured to drive the scooter wherein. The transmission mechanism is provided with a transmission rope that links the pedal and the rear wheel. The pedal is fixedly connected to the transmission rope to thereby drive the rear wheel by pulling the transmission rope.

A dual-pedal driven scooter includes a frame having a front end and a rear end. Front wheels and a rear wheel that are connected to the frame at the front end and the rear end, respectively. A transmission mechanism is configured to drive the rear wheel to thereby drive the scooter. A pedal is configured to drive the scooter wherein. The transmission mechanism is provided with a transmission rope that links the pedal and the rear wheel. The pedal is fixedly connected to the transmission rope to thereby drive the rear wheel by pulling the transmission rope.

A pump-action mobility and exercise device may include a pumping arm attached to a foot slide. As the pumping arm is actuated, the foot slide moves forward and rearward in response to the pumping action. The foot slide can also be moved by a user's foot movement. The foot slide may be connected to a drive mechanism that selectively engages a chain or belt that loops around a drive wheel arranged on an axle of the vehicle. When the drive mechanism catches and moves the belt or chain in a forward direction, the axle rotates in a forward direction to drive the vehicle forward. A reverse mechanism may also be provided that selectively causes the drive mechanism to catch and drive the belt or chain in an opposite direction.

A pump-action mobility and exercise device may include a pumping arm attached to a foot slide. As the pumping arm is actuated, the foot slide moves forward and rearward in response to the pumping action. The foot slide can also be moved by a user's foot movement. The foot slide may be connected to a drive mechanism that selectively engages a chain or belt that loops around a drive wheel arranged on an axle of the vehicle. When the drive mechanism catches and moves the belt or chain in a forward direction, the axle rotates in a forward direction to drive the vehicle forward. A reverse mechanism may also be provided that selectively causes the drive mechanism to catch and drive the belt or chain in an opposite direction.