An apparatus for rotatably supporting a rotating cylindrical body. The apparatus comprises a pair of roller assemblies for supporting an annular bearing surface of a rotating cylindrical body. Each of the roller assemblies comprises a cylindrical roller having a circumferential bearing surface in supporting engagement with the annular bearing surface of the rotating body; first and second shaft extensions extending from the roller; bearings for rotatably supporting the first and second shaft extensions; and a pivot plate for supporting the bearings, the pivot plate being pivotally attached to a base by a pivot pin such that the cylindrical roller self-adjusts to the annular bearing surface of the rotating body.

A sun roller of a friction roller-type transmission includes a movable sun roller element (23) capable of moving in an axial direction. Furthermore, the sun roller is provided with a loading cam mechanism which is formed along the circumferential direction of an input shaft (12), the loading cam mechanism having a first cam surface (75), a second cam surface (77) arranged facing the first cam surface (75) and secured to the input shaft (12), rolling elements (63) held between the first and second cam surfaces (75, 77), and an annular holding device (51), and the loading cam mechanism axially displacing the movable sun roller element (23). The holding device (51) has an inside-diameter-surface guiding part (81) for positioning the holding device relative to the input shaft by being fitted over the input shaft, the guiding part being provided to the inside diameter surface.

A sun roller of a friction roller-type transmission includes a movable sun roller element (23) capable of moving in an axial direction. Furthermore, the sun roller is provided with a loading cam mechanism which is formed along the circumferential direction of an input shaft (12), the loading cam mechanism having a first cam surface (75), a second cam surface (77) arranged facing the first cam surface (75) and secured to the input shaft (12), rolling elements (63) held between the first and second cam surfaces (75, 77), and an annular holding device (51), and the loading cam mechanism axially displacing the movable sun roller element (23). The holding device (51) has an inside-diameter-surface guiding part (81) for positioning the holding device relative to the input shaft by being fitted over the input shaft, the guiding part being provided to the inside diameter surface.

A speed changer includes an inner ring, an outer ring, a plurality of first tapered rollers provided in an annular space between inner ring and outer ring on one side in an axial direction, annular first cage that holds the first tapered rollers, a plurality of second tapered rollers provided in the annular space on the other side in the axial direction, and an annular second cage that holds the second tapered rollers. The first cage is a fixed member that is not allowed to rotate around a center line of the annular space. The outer ring is an input member to which a rotation torque is input. The second cage is an output member that outputs rotation resulting from reduction in a speed of the input. A first rotating portion including the first tapered rollers is different in specifications from a second rotating portion including the second tapered rollers.

When an abutting member is in contact with a driving force transmission member that engages with a driving member, a biasing member biases the driving force transmission member in a direction where the driving force transmission member is disengaged from the driving member.

When an abutting member is in contact with a driving force transmission member that engages with a driving member, a biasing member biases the driving force transmission member in a direction where the driving force transmission member is disengaged from the driving member.

A rotary device assembly is provided and includes an input shaft coupled to a torque generating device, an output shaft and a rotary device disposed to transmit first torque from the input shaft to the output shaft and configured with no-back capability to prevent second torque applied to the output shaft from being transmitted to the input shaft in an event the second torque deceeds a torque-limiting threshold and the no-back capability and torsional lock-up capability to prevent an overload of the torque generating device in an event the second torque exceeds the torque-limiting threshold.

A rotary device assembly is provided and includes an input shaft coupled to a torque generating device, an output shaft and a rotary device disposed to transmit first torque from the input shaft to the output shaft and configured with no-back capability to prevent second torque applied to the output shaft from being transmitted to the input shaft in an event the second torque deceeds a torque-limiting threshold and the no-back capability and torsional lock-up capability to prevent an overload of the torque generating device in an event the second torque exceeds the torque-limiting threshold.

A cartridge includes a housing having a first wall and a second wall opposing each other, a drive-transmission member and a detected body rotatable about a first axis and a second axis respectively parallel to a first direction from the second wall toward the first wall. The detected body having a detected portion is movable first in the first direction and then in a second direction opposite to the first direction relative to the first wall while irreversibly moving from a first position to a second position, a distance between the detected portion and the first wall in the first direction being longer at the second position than at the first position. The drive-transmission member includes a first engaging portion engageable with the detected body at the first position and positioned upstream of an abutment portion abuttable with a receiving portion of the detected body in the first direction.

A cartridge includes a housing having a first wall and a second wall opposing each other, a drive-transmission member and a detected body rotatable about a first axis and a second axis respectively parallel to a first direction from the second wall toward the first wall. The detected body having a detected portion is movable first in the first direction and then in a second direction opposite to the first direction relative to the first wall while irreversibly moving from a first position to a second position, a distance between the detected portion and the first wall in the first direction being longer at the second position than at the first position. The drive-transmission member includes a first engaging portion engageable with the detected body at the first position and positioned upstream of an abutment portion abuttable with a receiving portion of the detected body in the first direction.