Embodiments of the subject invention are directed to a flywheel rotor that includes two or more sub-rotors stacked one on top of another, in which each sub-rotor is rotationally symmetric and disk shaped, where the axial centers of each sub-rotor in the stack are rotationally aligned, and each sub-rotor has an upper and a lower journal that extends outward from the origin of the center section of the primary rotational mass of the sub-rotor. Each pair of adjacent sub-rotors in the stack has a lower journal of an upper sub-rotor that is disposed above an upper journal of a lower sub-rotor. Also, there is a joining mechanism between each pair of adjacent sub-rotors that fixedly connects the lower journal of the upper sub-rotor to the upper journal of the lower sub-rotor.

A gyroscopic roll stabilizer includes a gimbal having a support frame and enclosure configured to maintain a below-ambient pressure, a flywheel assembly including a flywheel and flywheel shaft, one or more bearings for rotatably mounting the flywheel inside the enclosure, a motor for rotating the flywheel, and bearing cooling system for cooling one or more bearings supporting the flywheel. The bearing cooling system enables heat generated by the bearings to be transferred through the flywheel shaft to a heat sink disposed within a cavity in the end of the flywheel shaft, and then external to the enclosure.

A flywheel includes a rotation shaft, a flywheel body, and a protruding body. A first end of the rotation shaft is supported by a rotating body. The flywheel body is provided at a second end of the rotation shaft and rotates together with the rotation shaft. The protruding body protrudes from a surface at a rotating-body side of the flywheel body and extends in a circumferential direction of the rotation shaft.

A drivetrain module for a motor vehicle including a flywheel connectable to a crankshaft, and a crankshaft starter-generator which has a rotor. The flywheel has a multiplicity of fastening points. In a region of magnetically soft action of the rotor, a multiplicity of passage openings is arranged in each case so as to be spatially assigned to the fastening points of the flywheel. Through the passage openings, pin-like fastening elements interact with the respectively assigned fastening points for the rotationally conjoint connection of rotor and flywheel.

Disclosed herein is a flywheel comprising at least one mass, and at least one cable encompassing the outside of the at least one mass, wherein the at least one cable is configured to generate an opposing restraining force to the centripetal force generated from rotational motion of the at least one mass. Corresponding methods and systems also are disclosed.

An added inertia resonant system (12) for a power toothbrush (10) comprises a drive shaft (16), a drive system (22), and at least one inertial weight member (24). The drive shaft (16) has a principal axis (26) that defines a center of rotation. The drive system (22) imparts a reciprocating motion to the drive shaft (16) about the principal axis(26). The at least one inertial weight member (24) couples to the drive shaft (16) and comprises a planar material having a complex shape balanced along an x-, y-and z-axis to enable the drive system (22) to achieve low power, high amplitude motion of the drive shaft (16) when placed under user loading. A method for providing added inertia in a resonant system for a power toothbrush is also disclosed.

A flywheel assembly constituted of: a plurality of stacked plates, a first end plate of the plurality of plates defining a first end of a rotor and a second end plate of the plurality of plates defining a second end of the rotor; and a pair of shafts, each extending from a respective one of the first end and the second end of the rotor along a rotational axis of the rotor, wherein a perimeter of each of the first and second end plates exhibits a respective plurality of teeth.

The present invention intends to provide a rotary tilling apparatus capable of separating a power transmission system starting from a flywheel to a passive movement device through an elastic coupler from another power transmission system starting from the flywheel to a rotor of a motor generator, and thereby reducing a load applied to the rotor and preventing the power transmission system of the passive movement device from providing an negative effect to an engine and the rotor. A parallel hybrid power transmission mechanism (1) includes an engine (2), a crank shaft (2A) disposed on the engine (2), a motor generator (3), a passive movement device (4) configured to receive a motive power of the motor generator (3), an input shaft (4A) disposed on the passive movement device (4), a flywheel (5) coupled to the crank shaft (2A), an elastic coupler (6) configured to couple the flywheel (5) to the input shaft (4A), and a rotor (7) disposed on the motor generator (3) and coupled to the fly wheel (5).

The outboard motor of the reciprocating piston internal combustion engine type has a crankshaft system with a crankshaft positioned upright within a machine housing of the internal combustion engine and having at an upper end region a flywheel. The flywheel is clad with a cover that extensively surrounds the flywheel starting at a top side of the internal combustion engine. Here, the crankshaft system has two parallel crankshafts that are each provided at their upper end regions with flywheels. The flywheels, when viewed in the axial direction of the crankshafts, are arranged offset with respect to each other and overlap in the manner of circular segments. The cover encapsulates the two flywheels over a significant range and is held in position on pivot axles of the flywheels.

A flywheel system may include one or more massive plates. A system may include two or more clamping plates including a bottom clamping plate and a top clamping plate, the one or more massive plates being located between the two or more clamping plates. A system may include two or more axles including a top axle and a bottom axle, the bottom axle being physically disconnected from the top axle. A system may include a plurality of fasteners coupling the top clamping plate with the bottom clamping plate, the plurality of fasteners applying a clamping force on the one or more massive plates using at least one of the two or more clamping plates and the two or more axles.