Abstract: A toy vehicle includes a chassis, wheels connected to an exterior of the chassis and configured to move on a surface, at least two propellers connected to an interior of the chassis independently from the plurality of wheels, the at least two propellers being configured to counterrotate relative to each other thereby generating airflow outwardly from the chassis in a first direction that is normal to a rotational plane of the at least two propellers whereby the chassis is urged in a second direction opposite the first direction against the surface, at least one first drive motor operatively connected to the plurality of wheels for driving the plurality of wheels, and at least one second drive motor operatively connected to the at least two propellers for driving the at least two propellers.

Abstract: A gear driven by wobble movement contains an ergonomic pendulum (D), a centric disk (C) and a flywheel (A) having a common axis (S) of rotation. In the axis (S) of rotation a shaft (H) is placed which is joined to the pendulum (D). The mutual concentric position of the centric disk (C) and the flywheel (A) is delimitated by planet disk (B) which contacts the periphery of the centric disk (C) and the internal periphery of the flywheel (A) and is joined rotatably to the supporting structure (T). The supporting structure (T) is fixed to the linked structure which fixes the supporting structure (T), together with the planet disk (B), against rotation with respect to the axis (S) of rotation. A first freewheel (V1) is situated between the shaft (H) and flywheel (A) and a second freewheel (V2) is situated between the shaft (H) and centric disc (C).

Abstract: An auxiliary power device of a bicycle includes a driving member and a base member provided at a first section and a second section of the bicycle respectively. The first section and the second section are two parts of the bicycle, which has a relative motion therebetween in cycling. An input member is provided to the base member to be driven by the driving member when the first section moves relative to the second section. The input member turns a power storage member to store a power. A control member is provided for manipulation to release the power stored in the power storage member for moving the bicycle forward.

Abstract: An auxiliary power device of a bicycle includes a driving member and a base member provided at a first section and a second section of the bicycle respectively. The first section and the second section are two parts of the bicycle, which has a relative motion therebetween in cycling. An input member is provided to the base member to be driven by the driving member when the first section moves relative to the second section. The input member turns a power storage member to store a power. A control member is provided for manipulation to release the power stored in the power storage member for moving the bicycle forward.

Abstract: The elastodynamic energy accumulator-regulator comprises a sheet (1) that is wound or capable of being wound in radioida spiral form with increasing or decreasing curvature along the length of the spiral, capable of absorbing energy at variable torque and supply a practically constant torque in broad working areas The laminate or set of sheets that are wound or capable of being wound about themselves as a spring has variable thickness and/or width and/or reinforcement along its length, and is held at both ends. The laminate or set of sheets is made of composite materials with polymer matrix and fiber reinforcement This elastodynamic energy accumulator-regulator has application as an energy accumulator or regulator in many applications such as wind energy production and other renewable energies, applications in transport, applications in uninterruptible power supply systems, applications in electric network regulation, etc.

Abstract: The present invention provides a spring powered wheelbarrow with a manually powered drive assembly. A foot crank winds a spring through a system of shafts and sprockets in a first direction. By releasing a brake upon a front wheel of a wheelbarrow, the wound spring transfers a rotational movement from a spring shaft to a freewheel sprocket adjacent to the front wheel, the rotational movement upon the front wheel assisting a user in pushing the wheelbarrow.