A composite shaft with an end fitting mounted on an interface region on at least one end of said shaft, wherein in said interface region the shaft is tapered; and wherein said end fitting comprises a surface with matching taper, the surface engaging with said interface region.

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 hub joint assembly for frictionally connecting a shaft to a connector is provided. The hub joint assembly includes a coupling hub including a collar portion and a flange portion. The collar portion includes a bore having an inner surface that is configured to be positioned adjacent to the outer surface of the shaft. The collar portion further includes an outer surface that may be conical. The flange portion extends from the collar portion and is configured to be coupled with the connector. The hub joint assembly further includes a clamp ring including a bore having an inner surface. The inner surface may be conical and configured to mate with the outer surface of the coupling hub. A passage is defined in the clamp ring and extends from an outer surface of the clamp ring to the inner surface of the clamp ring.

A hub joint assembly for frictionally connecting a shaft to a connector is provided. The hub joint assembly includes a coupling hub including a collar portion and a flange portion. The collar portion includes a bore having an inner surface that is configured to be positioned adjacent to the outer surface of the shaft. The collar portion further includes an outer surface that may be conical. The flange portion extends from the collar portion and is configured to be coupled with the connector. The hub joint assembly further includes a clamp ring including a bore having an inner surface. The inner surface may be conical and configured to mate with the outer surface of the coupling hub. A passage is defined in the clamp ring and extends from an outer surface of the clamp ring to the inner surface of the clamp ring.

A composite shaft with an end fitting mounted on an interface region on at least one end of said shaft, and a preload structure arranged to provide a biasing force to bias the composite shaft against the end fitting; wherein the preload structure is in an interference fit with the composite shaft. The preload structure is applied to the composite shaft in a subsequent operation to the mounting of the end fitting to the shaft.

A composite shaft with an end fitting mounted on an interface region on at least one end of said shaft, and a preload structure arranged to provide a biasing force to bias the composite shaft against the end fitting; wherein the preload structure is in an interference fit with the composite shaft. The preload structure is applied to the composite shaft in a subsequent operation to the mounting of the end fitting to the shaft.

A linear actuation screw having a first end portion, a second end portion on an opposite side as the first end portion, and a sloping intermediate portion between the first end portion and second end portion. The first end portion has a threaded outer wall having a generally constant first diameter over at least a portion of its length and is configured to advance a nut or a sliding member along at least a portion of the first end portion. The second end portion has a threaded outer wall having a generally constant second diameter that is different from the first diameter and is configured to receive a motor fastening nut around it in order to secure the linear actuation screw to a motor. The sloping intermediate portion includes an outer wall that is generally smooth and continuous over at least a majority of the area of the outer wall.

A linear actuation screw having a first end portion, a second end portion on an opposite side as the first end portion, and a sloping intermediate portion between the first end portion and second end portion. The first end portion has a threaded outer wall having a generally constant first diameter over at least a portion of its length and is configured to advance a nut or a sliding member along at least a portion of the first end portion. The second end portion has a threaded outer wall having a generally constant second diameter that is different from the first diameter and is configured to receive a motor fastening nut around it in order to secure the linear actuation screw to a motor. The sloping intermediate portion includes an outer wall that is generally smooth and continuous over at least a majority of the area of the outer wall.

A coupling device configured to transmit a rotational force between a first shaft and a second shaft, the device including a first coupling member mounted on the first shaft, a second coupling member mounted on the second shaft, and an intermediate member disposed between the first coupling member and the second coupling member, and configured to allow misalignment between the first shaft and the second shaft. The second coupling member includes a base member configured to be fixed to the intermediate member by a first fastening device, and a shaft mounting member configured to relatively non-rotatably be mounted on the second shaft, the shaft mounting member having a long hole extending along a circumferential direction of the above-described axis and being configured to detachably be fixed to the base member by a second fastening device inserted through the long hole.