A foldable apparatus and an electronic device are provided. The foldable apparatus includes a rotating shaft base, two main bodies disposed at two opposite sides of the rotating shaft base, and a synchronous transmission assembly connected with the two main bodies. Each main body is provided with a rotating member rotatably connected with the rotating shaft base and a housing fixedly connected with the rotating member. Each rotating member is provided with a first bevel gear at an end. The synchronous transmission assembly includes two combined-gears rotatably connected with the rotating shaft base, each combined-gear includes a second bevel gear and a spur gear coaxial with the second bevel gear, two second bevel gears engage with two first bevel gears respectively, and two spur gears engage with each other.

A gas turbine engine assembly comprising, a gearbox including a first housing that includes a first auxiliary gear drive on a first portion thereof, a second housing that includes a second auxiliary gear drive on a second portion thereof, and a third housing that includes a third auxiliary gear drive on a third portion thereof, the housings being interconnected so that the first portion of the first housing, the second portion of the second housing and the third portion of the third housing form a substantially triangular polyhedron shape, with the second portion of the second housing disposed between the first portion of the first housing and the third portion of the third housing. The first auxiliary gear drive, the second auxiliary gear drive and the third auxiliary gear drive project outwardly in mutually divergent directions.

An actuator gearbox includes a drive shaft including a plurality of gear linkages that are spaced apart along the drive shaft, and a plurality of output shafts adjacent respective ones of the plurality of gear linkages. Each of the gear linkages includes a fixed gear coupled to one of the plurality of output shafts and a moving gear that is slideably coupled to the drive shaft. A bias spring is coupled to the moving gear to urge the moving gear out of engagement with the fixed gear. The mechanical switch moves the moving gear into engagement with the fixed gear on the output shaft adjacent the linkage to thereby cause the output shaft to rotate in response to rotation of the drive shaft.

The invention relates to an assembly comprising a drive gearbox (10) for an aircraft (1) and an accessory (30), the gearbox comprising: a connecting shaft (110) adapted to be driven by the propulsion system, a main shaft (120) adapted to be driven by the connecting shaft (110), and two bevel gears (122, 123) which are integral with the main shaft (120) and have different diameters (d.sub.122, d.sub.123), the accessory comprising: a high-speed accessory shaft (31) comprising a bevel gear (310), a low-speed accessory shaft (32) comprising a bevel gear (320), such that each gear (310, 320) on the accessory shafts (31, 32) meshes with one of the two bevel gears (122, 123) on the main shaft (120), so that the two accessory shafts (31, 32) rotate at different speeds relative to one another.

An accessory system for a gas turbine engine having a driveshaft with an axis of rotation is provided. The accessory system includes a towershaft coupled to the driveshaft and driven by the driveshaft along a towershaft axis of rotation. The accessory system also includes a shaft including a first shaft bevel gear coupled to a towershaft bevel gear. The shaft is rotatable by the towershaft along a shaft axis of rotation. The shaft axis of rotation is transverse to the towershaft axis of rotation. The accessory system includes a first accessory drive shaft having a first accessory bevel gear driven by the shaft. The accessory system also includes a second accessory drive shaft having a second accessory bevel gear driven by the shaft. A first accessory axis of rotation and a second accessory axis of rotation are substantially transverse to the shaft axis of rotation.

An adjustable strut that includes an outer housing configured to receive an extendable member, and an extending mechanism with a gear system configured to convert rotation motion of an input mechanism into linear translation of the extendable member.

The present disclosure describes a powertrain and an all-terrain vehicle. The powertrain includes an engine, a continuously variable transmission and a transmission. The continuously variable transmission is drivingly coupled to the engine. The transmission includes a casing, a power input shaft, a first power output shaft and a second power output shaft. The power input shaft, the first power output shaft and the second power output shaft are all provided in the casing. The power input shaft is drivingly coupled to the continuously variable transmission, the power input shaft is drivingly coupled to the first power output shaft and the second power output shaft separately in the casing, and an axis of the power input shaft is parallel to an axis of the first power output shaft and perpendicular to an axis of the second power output shaft.

An accessory system for a gas turbine engine having a driveshaft is provided. The accessory system includes a towershaft coupled to the driveshaft and driven by the driveshaft. The accessory system also includes a shaft including a first shaft bevel gear coupled to a towershaft bevel gear. The shaft is rotatable by the towershaft. The accessory system includes a first accessory drive shaft having a first accessory bevel gear driven by the shaft. The accessory system also includes a second accessory drive shaft having a second accessory bevel gear driven by the shaft.

An apparatus and methods are provided for a transmission for a rear mid-engine vehicle. The transmission comprises a power transfer portion for receiving torque from the engine and a gearbox for providing conversions of rotational speed and torque. First and second side output portions conduct torque from the gearbox to the rear wheels. A forward output portion conducts torque to front wheels of a four-wheel drive vehicle. An air clutch comprising each output portion controls the degree of torque transferred to each wheel. The output portions are each coupled to a rear wheel by a rear axle, bevel gears, and rear portal gears. The rear axles are aligned with, and positioned above, the trailing arms to protect the rear axles from damage due to rocks and debris. The length and alignment of the rear axles cause CV joints to articulate in the same direction as the trailing arms.

A system for adjusting the rotational timing between driveshafts rotated by an output shaft. The system includes a flange coupler configured to be coupled to a first of the driveshafts to prevent rotation therebetween. The flange coupler defines openings therein. A coupler input gear defines openings therein and is configured to rotatably mesh with a second input gear coupled to a second of the driveshafts. Fasteners are configured to the extend through the openings in the flange coupler and the openings in the coupler input gear to rotationally fix the flange coupler and the coupler input gear, which are fixable at multiple rotational orientations therebetween. The rotational timing between the driveshafts is adjustable by rotating the coupler input gear into different orientations of the multiple rotational orientations relative to the flange coupler prior to fixing the flange coupler to the coupler input gear.