Actuators and methods useful in the operation aircraft flight control surfaces are disclosed. Some of the actuators and methods disclosed may be useful in the operation flight control surfaces when a fault condition such as a jam associated with an actuator is detected. An exemplary electromechanical actuator disclosed comprises: a motor; a first screw configured for translation movement relative to a structure of the aircraft when driven by the motor; a second screw mounted in series with the first screw; and a fuse element coupling the first screw and the second screw together to permit translation movement of the second screw together with the first screw. The fuse element may permit at least partial disengagement of the second screw from the first screw to permit translation of the second screw relative to the first screw. The fuse element may also allow an active flutter damping of the flight control surface. The fuse element may comprise magneto-rheological fluid.

An electric steering column apparatus includes a pressing mechanism for reducing the play between an outer jacket and an inner jacket. A pressing mechanism has a first pressing portion disposed on the outer jacket and pressing a lower surface of the inner jacket upward and a second pressing portion disposed on an axially front end side of the outer jacket and pressing an upper surface of the inner jacket downward. A tubular member housing a telescopic nut is disposed between the first pressing portion and the second pressing portion in an axial direction so as to face the second pressing portion in an up-down direction and fixed to the lower surface of the inner jacket.

A multi-mode, power-split hybrid transmission system having two planetary gear (PG) sets connected to one engine, two electric motors, one output shaft, and each other by several clutches, brakes, and direct connection elements. Depending on the specific location and actuation of the various clutch and brake elements, the multi-mode, power-split hybrid transmission system can be run in one of several modes (e.g. electric drive, power-split, parallel hybrid, series hybrid, electronic continuously variable transmission (eCVT), generator, neutral, and the like).

The reduction gear includes a pair of gears installed in parallel between two shafts and each provided with a mobile wheel free to move axially to engage in turn with one of the shafts and to transmit movement with different ratios. Since the gear teeth are helical, opposite forces on the reduction gear make it changeover from one reduction ratio to the other. No external control is necessary. Application to mechanical transmissions between an engine and a reversible electrical machine (starter or generator), that starts the motor with a large speed reduction and generates electricity with a smaller reduction.

The reduction gear includes a pair of gears installed in parallel between two shafts and each provided with a mobile wheel free to move axially to engage in turn with one of the shafts and to transmit movement with different ratios. Since the gear teeth are helical, opposite forces on the reduction gear make it changeover from one reduction ratio to the other. No external control is necessary. Application to mechanical transmissions between an engine and a reversible electrical machine (starter or generator), that starts the motor with a large speed reduction and generates electricity with a smaller reduction.

The present invention relates to the field of linear actuators, and in particular, to a high-efficiency high-thrust electric linear actuator for a solar panel. Compared with a conventional electric linear actuator, in the electric linear actuator for a solar panel of the present invention, a drive nut on a screw uses a copper alloy nut. The copper alloy nut used in the present invention greatly improves the strength, toughness, and fatigue-resistance performance and has high hardness and high tensile strength. The copper alloy nut and the corresponding screw are used in combination to bear higher pressure and do not fracture easily. Therefore, a small-structure high-thrust electric linear actuator can be realized. An electric linear actuator having a smaller volume is used to support the solar panel, so that small space is occupied, and transportation and use become more convenient.

The present disclosure relates to a transmission mechanism for a base station antenna, and a base station antenna including the transmission mechanism. The transmission mechanism includes a motor and at least one connecting rod, wherein a gear mechanism is provided on a first end of the connecting rod, and the motor drives the connecting rod to rotate via the gear mechanism; and wherein a worm gear unit is provided on a second end of the connecting rod opposite to the first end, and the worm gear unit is configured to drive a movable element of a phase shifter when the connecting rod rotates. The transmission mechanism according to the present disclosure can generate greater driving force through the worm gear unit, and has a shorter axial length and a smaller height, and thus is particularly suitable for a more compact and thinner 5G base station antenna.

A steering column assembly includes a lower jacket assembly extending along a steering column axis. Also included is an upper jacket assembly at least partially received within the lower jacket assembly, the upper jacket assembly extendable along the steering column axis relative to the lower jacket assembly. Further included is a telescope actuator assembly configured to translate the upper jacket assembly relative to the lower jacket assembly. Yet further included is a telescope drive bracket of the telescope actuator assembly, the telescope drive bracket operatively coupled to the upper jacket assembly with a mechanical fastener disposed in a bracket slot located within the telescope drive bracket, the mechanical fastener moveable with the upper jacket assembly in a single axial direction along the steering column axis.

A dual clutch automatic transmission includes a one-way clutch provided in a driving force transmission path that establishes a certain gear ratio in a first set of gear ratios. A driving transmission direction of the one-way clutch is set such that a rotation inputted from a wheel side to an output member in a predetermined rotational direction is transmitted to the input shaft. The predetermined rotational direction corresponds to a backward movement of a vehicle. On condition that the vehicle has stopped, backward movement prevention control of causing the switching mechanism to engage a transmission gear for another gear ratio in the first set with the input shaft can be executed.

A power transmission apparatus of a hybrid electric vehicle includes an input unit including four input shafts disposed with several input gears, torque converting unit including a planetary gear set having rotational elements connected with the input shafts, and a shifting output unit for shifting torques received from the input shafts and outputting the shifted torque.