Abstract: An accessory system for a gas turbine engine having a drive shaft with an axis of rotation is provided. Also provided is a bearing housing assembly for coupling the drive shaft of an accessory having a first gear to a gear associated with the accessory system. The bearing housing assembly includes a mount including an interface to be coupled to the accessory and defining a central bore, and a lock cylinder configured to receive the drive shaft. The lock cylinder is movable relative to the central bore and the drive shaft to adjust a contact pattern between the first gear of the drive shaft and the gear of the accessory system.

Abstract: Provided is a double-flexspline harmonic reducer, comprising a strong flexspline (3), a weak flexspline (2) and a wave generator (1). The strong flexspline (3) and the weak flexspline (2) are coaxially fixed in an axial direction and a radial direction, and teeth which can be engaged with each other and are different in the number thereof are provided on the strong flexspline (3) and the weak flexspline (2) respectively. The wave generator (1) causes the weak flexspline (2) to undergo non-circular elastic deformation and then to partially engage with the strong flexspline (3), and a contact portion of the strong flexspline (3) and the weak flexspline (2) undergoes non-circular elastic deformation under a radial pressure from the weak flexspline (2). A wall thickness of the strong flexspline (3) is greater than or equal to 2 times and less than 5 times that of the weak flexspline (2).

Abstract: The present invention relates to a seamless gearbox, particularly for motorcycles, which is mechanically operated e.g. by the rider's foot. The input shaft of the seamless gearbox of the present invention is split into two elements, each of them is connected to the “next” or “previous” gear, that are linked via the system to the torque input (e.g. clutch). The system according to a preferred embodiment of the present invention allows, via mechanical functionality only, to select only the appropriate of the two elements to transmit torque, based on relative speed between the two elements, and avoiding (for safety reasons) to have simultaneous torque transmission to both elements at the same time.

Abstract: The disclosure relates to a transmission mechanism with at least two gearwheels that can be brought into form-fitting engagement with one another. One of the gearwheels is designed as a movable gear and, in a disengaged position, is arranged in a freely rotatable manner on a transmission shaft. The other of the gearwheels is designed as a fixed gear and is arranged non-rotatably on a further transmission shaft, the movable gear is connectable non-rotatably to the transmission shaft by a clutch unit and at least one transmission gear can be engaged if a clutch toothing of the clutch unit engages in a form-fitting manner in a toothing of the movable gear in a tooth-on-tooth-gap position. A sensor device detects a rotational speed signal incoming into the other transmission shaft and a rotational speed signal outgoing from the transmission shaft.

Abstract: A hybrid drive sub-assembly for a vehicle has primary gear wheels, secondary gear wheels that are able to be coupled to a secondary shaft, and an intermediate shaft to which intermediate gear wheels are secured for rotation therewith. The primary gear wheel(s) and the secondary gear wheels each meshing permanently with a corresponding gear wheel from among the intermediate gear wheels. This hybrid sub-assembly is equipped with a motorized module having a reversible electric machine, an interface for connecting to the intermediate shaft, a speed reducer, a torsional oscillation damping device and a coupling mechanism that is able to couple and uncouple the reversible electric machine and the intermediate shaft.

Abstract: A dual-clutch transmission includes an odd gears clutch, an odd gears shaft supporting at least two odd-numbered rotary gears, an even gears clutch, and an even gears shaft supporting at least two even-numbered rotary gears. A driven rotary shaft is selectively connectable to one respective said odd- or even-numbered gear at a time. The dual-clutch transmission includes first and second range selection gears to transfer drive from the driven rotary shaft to an output shaft so as selectively to permit selection of at least a first range transmission ratio or a second range transmission ratio. The dual-clutch transmission further includes a first bypass drive line to drive engagement of at least two mutually engaged bypass rotary gears with the output shaft, giving rise to a first intermediate transmission ratio.

Abstract: An externally toothed gear of a cup-type strain wave gearing has external teeth, the tooth profile of which gradually changes in the tooth-trace direction. The external teeth are formed with an external teeth portion capable of meshing with internal teeth of an internally toothed gear, a first external teeth extension portion and a second external teeth extension portion, in which the first and second external teeth extension portions do not mesh with the internal teeth. The second external teeth extension portion has a narrowing tapered tooth profile so that the second external teeth extension portion serves as a guide when the external teeth is inserted into the internal teeth. The work of assembling the externally toothed gear in the internally toothed gear is made easier.

Abstract: A driving device includes a motor, a wave gear device including a wave generator having first thickness, a flex spline, and a circular spline having thickness larger than the first thickness, a housing functioning as a housing of the motor and including a flange, and an oil seal fixed to the inner side of the flange and extending along the outer circumference of the shaft. The wave generator is set closer to the opposite direction of the flange to configure an internal space with the members. When the internal space is filled with grease, a distance between the oil seal and the wave generator is set smaller than distances among the other members.

Abstract: A flexible transmission element is disclosed which can be used, in particular in a harmonic drive and which includes a sleeve-shaped, outer toothed section and a flange connected to this section, the outer toothing of the sleeve-shaped section is sheet metal toothing formed in a die.

Abstract: A transmission includes a gearing arrangement configured to shift speed ratios by disengaging an off-going shift element and engaging an oncoming shift element and an electrohydraulic valve having an actuatable valve element configured to control an engagement state of the oncoming shift element. A controller is programmed to, during a shift of the transmission, in response to the off-going shift element disengaging and an expected ratio change not initiating, monotonically increase current to the valve to a maximum value to overcome frictional resistance on the valve element, and programmed to, in response to expiration of a timer and the ratio change still not initiating, send a repeating pattern of high and low current signals according to a duty cycle to overcome frictional resistance of the valve element.

Abstract: A hybrid power-driven system and a vehicle are provided. The hybrid power-driven system includes an engine, a transmission, and a motor power apparatus. The transmission includes a transmission mechanism and a main reducer. The motor power apparatus includes a motor and a power distribution mechanism. The power distribution mechanism includes a motor power distribution shaft, a mode selection apparatus, a first transmission apparatus, and a second transmission apparatus. The motor power distribution shaft is disposed independently from the transmission mechanism, and the motor power distribution shaft is disposed independently from the motor. A motor driven gear configured to receive power of the motor is disposed on the motor power distribution shaft.

Abstract: A gear device includes an internal gear, an external gear, and a wave generator. The external gear includes a cylinder section including external teeth, a diaphragm extending to a radial direction outer side of the cylinder section on the opposite side of the external teeth, and an annular boss section coupled to the outer circumferential end side of the diaphragm. The thickness of the diaphragm gradually decreases from the outer circumferential end toward a center portion in the radial direction of the diaphragm. In a natural state, a part (an inclination start part) where a first surface on the external teeth side of the diaphragm starts to incline with respect to an imaginary surface, which is a surface perpendicular to a rotation axis, is present further on the cylinder section side in the radial direction than the inner circumferential surface of the boss section.

Abstract: A transmission includes an input shaft coupled to a prime mover, a countershaft, main shaft, and an output shaft, with gears between the countershaft and the main shaft. A shift actuator selectively couples the input shaft to the main shaft by rotatably coupling gears between the countershaft and the main shaft. The shift actuator is mounted on an exterior wall of a housing including the countershaft and the main shaft. An integrated actuator housing includes a single external power access for the shift actuator. A controller interprets a shaft displacement angle, determines if the transmission is in an imminent zero or zero torque region, and performs a transmission operation in response to the transmission in the imminent zero or zero torque region.

Abstract: A lay-shaft assembly for use in a vehicle transmission, including a lay-shaft which is rotatable around a central axis, a first gearwheel rotatable around the lay-shaft and the central axis, a second gearwheel fixedly connected to the lay-shaft and rotatable with the lay-shaft around the central axis, and a clutching assembly rotatable around the lay-shaft and the central axis. The clutching assembly includes a driven gearwheel and clutching mechanism for selectively coupling the rotation of the driven gearwheel to either the first gearwheel or the second gearwheel. The clutching assembly has a first axial end and a second axial end opposite the first axial end. The first gearwheel and the second gearwheel are arranged on a part of the lay-shaft extending from the first axial end of the clutching assembly.

Abstract: Non-limiting examples of the present disclosure relate to generation and implementation of a new security protocol that is used to secure common data access transactions across distributed network examples. An exemplary proof of verification protocol is disclosed that implements consensus security mechanisms across a plurality of distributed nodes, which may be utilized to validate owners of data in common data access transactions. Extending principles of blockchain security to common data access transactions and Internet of Things (IoT) networking requires a solution that: improves speed in transactional processing; reduces computational complexity; and presents efficient, secure and repeatable validation for owners of data in distributed networking environments. An exemplary proof of verification protocol provides such technical advantages by validating both user-specific data for a subscriber of an application/service and session data for user activity (past and present) within the application/service.

Abstract: A strain wave gear, in particular for an electromechanical camshaft adjuster, comprises a housing element, an internally toothed drive element connected thereto in a rotationally fixed manner, an elastic, externally toothed gear element, and an internally toothed output element. The drive element has positive locking elements with which it is connected to the housing element.

Abstract: A speed ratio switching type strain wave gearing can switch the speed ratio of output rotation with respect to one input rotation into two states or multiple states with a simple configuration. The speed ratio switching type strain wave gearing includes first and second internally tooted gears, an externally toothed gear having first and second external teeth formed on the external peripheral surface thereof, a wave generator that causes the first and second external teeth to partially mesh with the first and second internally toothed gears, a clutch mechanism that can selectively switch the first and second internally toothed gears into a fixed state. Input rotation from the wave generator can be reduced in speed at a different speed ratio and derived from the externally toothed gear by selectively switching the first and second internally toothed gears into a fixed state.

Abstract: An outer-ring lubrication groove pattern formed in an outer-race raceway surface and an inner-race lubrication groove pattern formed in an inner-race raceway surface of a wave generator bearing of a strain wave gearing device are patterns in which linear lubrication grooves having very small widths and depths of several micrometers or less are arranged at fine pitches of several micrometers or less. The inner-race lubrication groove pattern includes a second groove pattern formed in long-axis-side inner-race raceway surface portions to hold the lubricant, and a first groove pattern formed in short-axis-side inner-race raceway surface portions to hold the lubricant and guide the lubricant to the second groove pattern. This configuration improves the contact state between balls and the inner-race and outer-race raceway surfaces of the wave generator bearing, thus reducing the coefficient of friction therebetween.

Abstract: A tool presetting and/or tool measuring apparatus device includes a carrier unit and a spindle unit, in particular motor spindle unit, which is supported by the carrier unit, which is at least configured for a rotation of an object inserted in the spindle unit, in particular a tool and/or a tool holder, around a spindle axis of the spindle unit and which comprises at least one drive unit for generating the rotation movement of the object, wherein the spindle unit includes a coupling unit which is configured, in particular for the purpose of changing a maximally achievable spindle torque, to drive the spindle unit in at least two differing modes.

Abstract: A longitudinal multi-shift electrically driving power assembly, wherein the longitudinal multi-shift electrically driving power assembly includes an electric motor and a plurality of sets of gearboxes, each of the gearboxes is a single-shift reduction gearbox or a multi-shift reduction gearbox, the gearboxes are connected in series to form a gearbox assembly, and an output shaft of the electric motor and an input shaft of the gearbox assembly are integrally manufactured. The power assembly employs the plurality of sets of gearboxes that are connected in series, which improves the performance of the power assembly without adding a power source.