A pinion to be fitted on a turbine axis of an internal combustion engine, wherein said pinion is made in a single piece, equipped with an axial thread to screw it on said axis of the turbine, wherein an axial end of the pinion integrates/defines a disc spring.

A vehicle includes a first drivetrain component and a second drivetrain component. The first drivetrain component defines a splined orifice. The second drivetrain component has a shaft that includes splines that are configured to clearance-fit the splined orifice upon engagement up to a first length and interference-fit the splined orifice upon engagement beyond the first length. Engagement of the splines and the splined orifice at substantially the first length counteracts loads perpendicular to an axis of the shaft preventing disengagement of the first and second drivetrain components.

A vehicle includes a first drivetrain component and a second drivetrain component. The first drivetrain component defines a splined orifice. The second drivetrain component has a shaft that includes splines that are configured to clearance-fit the splined orifice upon engagement up to a first length and interference-fit the splined orifice upon engagement beyond the first length. Engagement of the splines and the splined orifice at substantially the first length counteracts loads perpendicular to an axis of the shaft preventing disengagement of the first and second drivetrain components.

The fastening elements 71 are first set through the rotary disk 1 to be then fixed to the retention plates 2 so that the stretching force induced by the fixing operation is acting upon the retention plates 2. This helps prevent the rotary disk 1 from being affected by the stretching force and thus deformed. Further, the fastening holes 22 are located adjacent to the retention grooves 21 so that they can directly and effectively apply forces to the support members 3 and due to the torque (distance) thereof with respect to the support members 3 being reduced, it is possible to effectively reduce the occurrence of deformation of the retention plates 2. To summarize, since the stretching force induced by fixing is born by the retention plates 2, the rotary disk 1 may have a lifespan that is greater than that of the retention plates 2 and with the arrangement that releasable engagement is formed between the retention plates 2 and the rotary disk 1, it only needs to replace an individual one of the retention plates 2 that has been deformed in the maintenance thereof. Further, due to the size of the retention plates 2 being reduced, the cost of maintenance can be greatly lowered down.

The fastening elements 71 are first set through the rotary disk 1 to be then fixed to the retention plates 2 so that the stretching force induced by the fixing operation is acting upon the retention plates 2. This helps prevent the rotary disk 1 from being affected by the stretching force and thus deformed. Further, the fastening holes 22 are located adjacent to the retention grooves 21 so that they can directly and effectively apply forces to the support members 3 and due to the torque (distance) thereof with respect to the support members 3 being reduced, it is possible to effectively reduce the occurrence of deformation of the retention plates 2. To summarize, since the stretching force induced by fixing is born by the retention plates 2, the rotary disk 1 may have a lifespan that is greater than that of the retention plates 2 and with the arrangement that releasable engagement is formed between the retention plates 2 and the rotary disk 1, it only needs to replace an individual one of the retention plates 2 that has been deformed in the maintenance thereof. Further, due to the size of the retention plates 2 being reduced, the cost of maintenance can be greatly lowered down.

A planetary transmission includes at least two planetary stages. A sun shaft of a planetary stage of the at least two planetary stages is connected for transmission of torque via a coupling toothing system to a planetary carrier of a second transmission stage of the at least two planetary stages that follows the first transmission stage. The coupling toothing system is a flat notch toothing system. A drive train of a wind power plant, in which a corresponding planetary transmission is used as transmission, is also provided. A wind power plant that is equipped with a corresponding drive train is provided. An industrial application that has a corresponding planetary transmission as transmission is also provided.

A planetary transmission includes at least two planetary stages. A sun shaft of a planetary stage of the at least two planetary stages is connected for transmission of torque via a coupling toothing system to a planetary carrier of a second transmission stage of the at least two planetary stages that follows the first transmission stage. The coupling toothing system is a flat notch toothing system. A drive train of a wind power plant, in which a corresponding planetary transmission is used as transmission, is also provided. A wind power plant that is equipped with a corresponding drive train is provided. An industrial application that has a corresponding planetary transmission as transmission is also provided.

A turbine engine defines an axial direction and a radial direction and includes a shaft assembly, a fan or propeller assembly, an engine core, a coupling shaft, a spacer, a sleeve, and a nut The coupling shaft defines an annular surface extended along the axial direction and a groove extended in a circumferential direction. The spacer defines a first portion disposed in the groove of the coupling shaft. The sleeve defines a threaded portion that extends along the axial direction and is disposed outward of the spacer in the radial direction. The nut defines a plurality of nut threads configured to mate with the plurality of sleeve threads of the sleeve. The nut defines a radial portion adjacent to at least a portion of the sleeve and at least a portion of the spacer in the axial direction.

A turbine engine defines an axial direction and a radial direction and includes a shaft assembly, a fan or propeller assembly, an engine core, a coupling shaft, a spacer, a sleeve, and a nut The coupling shaft defines an annular surface extended along the axial direction and a groove extended in a circumferential direction. The spacer defines a first portion disposed in the groove of the coupling shaft. The sleeve defines a threaded portion that extends along the axial direction and is disposed outward of the spacer in the radial direction. The nut defines a plurality of nut threads configured to mate with the plurality of sleeve threads of the sleeve. The nut defines a radial portion adjacent to at least a portion of the sleeve and at least a portion of the spacer in the axial direction.

The disclosure is directed to an apparatus for generating energy in response to a vehicle wheel rotation. The apparatus may include a first roller comprising a curved roller surface configured to be positioned in substantial physical contact with a first wheel of the vehicle. The first roller may be configured to rotate in response to a rotation of the first wheel. The apparatus may further include a first shaft rotatably couplable to the first roller such that rotation of the first roller causes the first shaft to rotate. The apparatus may further include a first generator operably coupled to the first shaft. The generator may be configured to generate an electrical output based on the rotation of the first shaft and convey the electrical output to an energy storage device or to a motor of the vehicle that converts electrical energy to mechanical energy to rotate one or more wheels of the vehicle.