A method of assembling a modular hybrid transmission (MHT) is provided including (a) assembling an emotor clutch on a clutch shaft to form a clutch assembly, (b) press-fitting a bushing into a centering plate to form a centering assembly, (c) connecting the centering assembly to a torque converter, (d) assembling the torque converter to the clutch assembly with the bushing on an end of the clutch shaft, and (e) inserting the clutch assembly and the torque converter into a transmission housing while maintaining the centering of the clutch shaft to the transmission housing via the centering assembly connected to the torque converter. The assembled MHT is also provided which eliminates the needle bearing according to the prior art, avoiding the potential for damage during assembly.

A method of assembling a modular hybrid transmission (MHT) is provided including (a) assembling an emotor clutch on a clutch shaft to form a clutch assembly, (b) press-fitting a bushing into a centering plate to form a centering assembly, (c) connecting the centering assembly to a torque converter, (d) assembling the torque converter to the clutch assembly with the bushing on an end of the clutch shaft, and (e) inserting the clutch assembly and the torque converter into a transmission housing while maintaining the centering of the clutch shaft to the transmission housing via the centering assembly connected to the torque converter. The assembled MHT is also provided which eliminates the needle bearing according to the prior art, avoiding the potential for damage during assembly.

A gas turbine engine according to an example of the present disclosure includes, among other things, a propulsor section including a propulsor, a gear reduction, a first spool including a first compressor, a first turbine and a first shaft, and a second spool including a second compressor, a second turbine and a second shaft. The gear reduction includes a carrier and a plurality of gears. The plurality of gears include a sun gear, a ring gear, and a plurality of intermediate gears that engage the sun gear and the ring gear. At least two of the plurality of gears are double helical gears in meshed engagement.

The invention relates to a planetary gear box in a gas turbine engine, characterized by at least one protective device in the interior of a casing of the planetary gear box, wherein the protective device is designed and configured to divert at least one particle which is moving in the casing, in particular in an event of damage, and/or to extract kinetic energy from the moving at least one particle, in particular by deformation of the protective device, wherein the protective device is coupled to the casing of the planetary gear box, to a planet gear and/or to a planet carrier. The invention also relates to a gas turbine engine.

A pinion shaft assembly for operation in a power end of a reciprocating pump includes a tubular member coupled to first pinion gear member via an interference coupling extension, possibly having a protruding alignment key operable to engage a slot formed on an inner wall of the first end of the tubular member to ensure correct rotational orientation of the first pinion gear member and the tubular member and to help prevent rotation of the first pinion gear member relative to the tubular member. The tubular member is also coupled to a second pinion gear member via an interference coupling extension, possibly having a protruding alignment key operable to engage a slot formed on an inner wall of the second end of the tubular member to ensure correct rotational orientation of the second pinion gear member and the tubular member and to help prevent rotation of the second pinion gear member relative to the tubular member.

A dynamic damper for suppressing vibration generated by a gear attached to a rotation shaft, the dynamic damper, includes: a mass body that is disposed inside a rotation shaft having a hollow shape and extends along a shaft center of the rotation shaft; and an elastic body that couples the mass body to the rotation shaft. Further, a flow path for lubricating liquid to flow is provided between an inner peripheral surface of the rotation shaft and the mass body, and the flow path is formed by the inner peripheral surface of the rotation shaft at an axial position where the elastic body is disposed.

A dynamic damper includes: a mass body that is disposed inside a rotation shaft and extends along a shaft center of the rotation shaft; and an elastic body interposed between the mass body and the rotation shaft. Further, the mass body is allowed to vibrate to a linear motion state, the elastic body includes: first and second contact surfaces, when the gear generates vibration so as to fall from a radial direction of the rotation shaft to an axial direction side of the rotation shaft, compressive stress acts on the elastic body by the mass body vibrating so as to push the first contact surface in response to the vibration, and when the gear generates vibration along the axial direction, compressive stress acts on the elastic body by the mass body coming in the linear motion state and vibrating so as to push the second contact surface.

A universal wheel driving system includes a sun gear receiving power from a power source, a ring gear, of which a rotation axis moves relatively to a rotation axis of the sun gear on a rotation plane parallel to a rotation plane of the sun gear, the ring gear being concentrically connected to a wheel, a gear train allowing relative movement between the rotational axes of the sun and ring gears, and to generate a continuous power transmission between the sun and ring gears, a carrier forming the gear train, and supporting in position a rotation axis of a final pinion engaged with the ring gear constant with respect to the rotation axis of the ring gear, and a plurality of suspension modules providing shock-absorbing and damping during relative movements of the ring gear and carrier with respect to the sun gear.

A transmission having a first component (101) mounted so as to rotate, a rotationally fixed second component (105) and a third component (107). The first component has a radially extending face and the third component (107) is fixed in the second component (105). The third component (107) is braced against the face and the third component (107) electrically connects the face and the second component (105) to one another.

An infinitely variable transmission (IVT) having a rotatable input shaft arranged along a longitudinal axis of the transmission. In one embodiment, the input shaft is adapted to supply a lubricant to the interior of the transmission. In some embodiments, a stator assembly is coupled to, and coaxial with, the input shaft. The IVT has a plurality of planets operably coupled to the stator assembly. The planets are arranged angularly about the longitudinal axis of the transmission. In one embodiment, a traction ring is operably coupled to the planets. The IVT is provided with a housing that is operably coupled to the traction ring. The housing is substantially fixed from rotating with the input shaft. The traction ring is substantially fixed from rotating with the input shaft. In some embodiments, the IVT is provided with a lubricant manifold that is configured to supply a lubricant to the input shaft.