The present invention relates to a carrier installed on the roof of a vehicle such as a car or SUV and to a lifting multi-joint roof carrier for a vehicle, which is used to easily load or unload an object on or from a vehicle roof. The present invention relates to a lifting multi-joint roof carrier for a vehicle, which is vertically movable up, rotatable, etc. in a process of loading or unloading cargo, to allow an object to be smoothly loaded or unloaded and have a structure with an aesthetically pleasing appearance.

An electric fan for producing thrust to propel an aircraft is disclosed. The electric fan comprises a stator, a fan rotor rotatably mounted relative to the stator and an electric motor mounted to the stator and drivingly engaged with the fan rotor to cause rotation of the fan rotor relative to the stator. The fan rotor comprises an annular body defining a flow passage therethrough and a plurality of fan blades disposed in the flow passage and mounted for common rotation with the annular body about a fan rotation axis. The electric motor has a motor rotation axis that differs from the fan rotation axis.

Transmission system for a vehicle having an input arranged for connection to a drive source, and an output arranged for connection to a load. The transmission includes a transmission. The transmission includes first input shaft, a first output shaft connected to the output, and a first speed transforming gear connecting the first input shaft and the first output shaft, and a second input shaft, a second output shaft connected to the output, and a second speed transforming gear connecting the second input shaft and the second output shaft. The transmission includes a first coupling member, arranged for coupling the input to the first input shaft at a first speed ratio and a second coupling member, arranged for coupling the input to the second input shaft at a second speed ratio. The first and second speed transforming gears together include a plurality of transmission gears, wherein the transmission gears are arranged such that successive shifting through respective first, second, third, fourth, fifth and sixth gears is effected by alternatingly engaging the first coupling member and the second coupling member.

Transmission system for a vehicle having an input arranged for connection to a drive source, and an output arranged for connection to a load. The transmission includes a transmission. The transmission includes first input shaft, a first output shaft connected to the output, and a first speed transforming gear connecting the first input shaft and the first output shaft, and a second input shaft, a second output shaft connected to the output, and a second speed transforming gear connecting the second input shaft and the second output shaft. The transmission includes a first coupling member, arranged for coupling the input to the first input shaft at a first speed ratio and a second coupling member, arranged for coupling the input to the second input shaft at a second speed ratio. The first and second speed transforming gears together include a plurality of transmission gears, wherein the transmission gears are arranged such that successive shifting through respective first, second, third, fourth, fifth and sixth gears is effected by alternatingly engaging the first coupling member and the second coupling member.

The embodiments disclose a method including transferring kinetic energy from a kinetic energy source to a flywheel storage device system, transferring all or a portion of the kinetic energy stored to a continually variable transmission planetary gear system, integrating a multiple axis mechanism kinetic energy transference device to the continually variable transmission planetary gear system, integrating multiple speed governors in the multiple axis mechanism kinetic energy transference device, coupling a computer controlled module to each of the speed governors, processing operational data with the computer controlled modules to determine a measured most efficient use of the kinetic energy for each operation, transmitting the operation measured most efficient use amount of the kinetic energy from the computer controlled module to the corresponding speed governor, transferring the amount of the kinetic energy through gears and output shafts/drive shafts to serve operations and storing surplus kinetic energy not needed for operations in the flywheel storage system.

A planetary gear mechanism includes a sun gear rotatable about an axis, a first shaft that is fixed to the sun gear and is rotatable integrally with the sun gear, a plurality of planetary gears that mesh with the sun gear and are rotatable about a center line thereof parallel to the axis, an internal gear that includes internal teeth facing inside in a radial direction to mesh with the planetary gears and is rotatable about the axis, a second shaft that extends in the axial direction to be connected to the internal gear and rotates about the axis together with the internal gear, and a reinforcing member that is fixed to an outer peripheral surface of the internal gear and is formed in an annular shape of a material having a higher specific strength than that of a material forming the internal gear.

The present invention relates to a power transmission device, which includes: a worm shaft; a Janggu (slim waist drum)-shaped worm which is provided on the worm shaft, and has a diameter-reduced part whose outer diameter is increased toward both ends from a center thereof in an axial direction of the worm shaft, wherein the diameter-reduced part has spiral worm teeth formed thereon; a first transmission shaft disposed in parallel to the worm shaft at an interval; and a first transmission gear which is provided on the first transmission shaft, and includes first gear teeth having tooth shapes conjugated with the worm teeth of the Janggu-shaped worm and are continuously formed in a spiral shape on an outer circumferential surface thereof, thus to rotate by threadedly engaging with the worm teeth of the Janggu-shaped worm.

The present invention relates to a power transmission device, which includes: a worm shaft; a Janggu (slim waist drum)-shaped worm which is provided on the worm shaft, and has a diameter-reduced part whose outer diameter is increased toward both ends from a center thereof in an axial direction of the worm shaft, wherein the diameter-reduced part has spiral worm teeth formed thereon; a first transmission shaft disposed in parallel to the worm shaft at an interval; and a first transmission gear which is provided on the first transmission shaft, and includes first gear teeth having tooth shapes conjugated with the worm teeth of the Janggu-shaped worm and are continuously formed in a spiral shape on an outer circumferential surface thereof, thus to rotate by threadedly engaging with the worm teeth of the Janggu-shaped worm.

A first rotation shaft (which is provided with a first gear) is assembled to a first case member so as to provide a first assembly. A second rotation shaft (which is provided with a second gear) and a third rotation shaft (which is provided with a third gear) are assembled to a support member so as to provide a second assembly. When the second assembly is assembled to the first assembly, the second assembly is rotatable around a third axis from a first position where the first gear and the second gear are located away from each other to a second position where the first gear and the second gear are in mesh with each other, and is positioned at the second position by using a positioning member.

A driving assembly includes a driving motor with a motor shaft, a transmission, first and second intermediate shafts, a power input shaft, a first output shaft and a second output shaft. The transmission includes a casing coupled to a housing of the driving motor, the power input shaft includes a power input end coupled to the driving motor, and power is transmitted between the first output shaft and the power input shaft and between the second output shaft and the power input shaft. The first and second intermediate shafts sequentially transmit power, power is transmitted between the first intermediate shaft and the power input shaft, and the second intermediate shaft simultaneously transmits power to the first output shaft and the second output shaft.