A flywheel coupling assembly for transmitting torque between a shaft and a flywheel includes a clamp ring assembly and a flywheel attachment flange assembly. The clamp ring assembly includes a first clamp ring adapted to be coupled to the shaft, a second clamp ring coupled to a coupling hub of the flywheel attachment flange assembly, and an elastomeric center element coupling the first and second clamp rings. A planer plate element of the flywheel attachment flange assembly is adapted to be coupled with the flywheel. Also disclosed are a method of forming a flywheel coupling assembly and a method of coupling a flywheel to a shaft.

A method comprises providing a line-start synchronous motor. The motor has a stator, a rotor core disposed within the stator, and a motor shaft. In accordance with a step of the method, a coupling for coupling a load to the motor is provided. The coupling has a motor shaft attachment portion configured to provide substantially concentric contact around the shaft at the end of the motor shaft. The coupling has a load attachment portion configured to operatively connect to a load. In accordance with a step of the method, a load is coupled to the motor with the coupling, and driven from start to at least near synchronous speed during steady state operation of the motor with a load coupled thereto. The motor shaft attachment portion may comprise a bushing assembly with matching and opposed tapered surfaces that cooperate to secure the motor shaft attachment portion around the motor shaft.

A device in a floor processing machine, which is drivable along a floor and has a number of floor processing tools rotatably driven by an engine with a coupling between a shaft of the engine and a shaft of a disc carrying the floor processing tools. The coupling is formed of an elastic, hole-shaped coupling ring which is slotted transversely to its circumferential direction and is connectable by its edge portions to the engine shaft and to a shaft of the coupling, respectively, the coupling ring being openable at its slotted portion for application and removal of the coupling ring to and from connection portions of the engine shaft and coupling shaft.

A system and method utilize a first rotation sensor that provides a first signal indicative of a first rotation of a first end of a rotating coupling. The rotating coupling has an articulating member mechanically coupling the first end to a second end. A second rotation sensor provides a second signal indicative of a second rotation of the second end of the rotating coupling. A processor is coupled to the first and second rotation sensors and is operable to determine a relationship between the first and second rotations based on the first and second signals. Based on the relationship, the processor estimates at least one of a degradation of and a remaining useful life of the rotating coupling.

A helicopter is described comprising a motor member comprising an output shaft and a first stator rotatably supporting the output shaft around a first axis; a main rotor adapted to provide the lift necessary for the support and the thrust necessary for the movement of the helicopter; a transmission interposed between the motor member and the main rotor; the transmission comprises, in turn, an input shaft rotatable around a second axis and a second stator rotatably supporting the input shaft around the second axis; the helicopter also comprises a joint interposed between the first and second stator, angularly fixed with respect to the first axis, and configured to allow an inclination between the first and second stator in a plane parallel to said first axis; the joint comprises a first corrugated element made of an elastically deformable material, interposed between said first and second stator, and adapted to allow the inclination through elastic deformation.

A coupling including a main body, a first hub at a first end of the main body and a second hub at a second end of the main body opposite the first end is provided. The first hub includes a first inner bore configured to receive a first shaft and a pair of aligned first and second through holes extending through opposite walls of the first hub. The first through hole and the second through hole are in optical communication with the first inner bore.

A flywheel coupling assembly for transmitting torque between a shaft and a flywheel includes a clamp ring assembly and a flywheel attachment flange assembly. The clamp ring assembly includes a first clamp ring adapted to be coupled to the shaft, a second clamp ring coupled to a coupling hub of the flywheel attachment flange assembly, and an elastomeric center element coupling the first and second clamp rings. A planer plate element of the flywheel attachment flange assembly is adapted to be coupled with the flywheel. Also disclosed are a method of forming a flywheel coupling assembly and a method of coupling a flywheel to a shaft.

A structure of the hollow torque transmission member having a bellows portion in the middle section in the axial direction is manufactured at low cost by bulge molding such as hydroforming molding. A thin thickness portion having a smaller thickness in the radial direction than other portion is provided in the middle section in the axial direction of a hollow material. A hollow torque transmission member comprising a bellows portion is obtained by expanding the thin thickness portion outward in the radial direction by performing hydroforming molding to the hollow material.

A helicopter is described comprising a motor member comprising an output shaft and a first stator rotatably supporting the output shaft around a first axis; a main rotor adapted to provide the lift necessary for the support and the thrust necessary for the movement of the helicopter; a transmission interposed between the motor member and the main rotor; the transmission rotatable around a second axis and a second stator rotatably supporting the input shaft around the second axis; the helicopter also comprises a joint interposed between the first and second stator, angularly fixed with respect to the first axis, and configured to allow an inclination between the first and second stator in a plane parallel to said first axis; the joint comprises a first corrugated element made of an elastically deformable material, interposed between said first and second stator, and adapted to allow the inclination through elastic deformation.

A system and method utilize a first rotation sensor that provides a first signal indicative of a first rotation of a first end of a rotating coupling. The rotating coupling has an articulating member mechanically coupling the first end to a second end. A second rotation sensor provides a second signal indicative of a second rotation of the second end of the rotating coupling. A processor is coupled to the first and second rotation sensors and is operable to determine a relationship between the first and second rotations based on the first and second signals. Based on the relationship, the processor estimates at least one of a degradation of and a remaining useful life of the rotating coupling.