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Figure 1 - sectional view of a first embodiment of a flywheel energy storage system according to aspects of the present invention.

2 - magnified view of the arrangement shown in Figure 1 and bounded by a circle II in Figure 1.

Figure 3 - a partial cut-away second embodiment of a flywheel energy storage system according to aspects of the present invention.

Figure 4 - a partial cross section of a third embodiment of a flywheel energy storage system according to aspects of the present invention.

5 - a partial cross section of a fourth embodiment of a flywheel energy storage system according to aspects of the present invention.

6 - cross section view of the device of Figure 1 bounded by the circle VI-VI in Figure 1.

7 - cross-section view of the structure shown in Figure 6 when the flywheel is rotated and the separating device and prevent vibration actuated to reduce the critical velocity of the flywheel assembly.

8 - an enlarged view of the structure shown in Figure 6, the limited circle VIII-VIII.

9 - view of the arrangement shown in Figure 8, showing a structure when the device compartment and prevent vibration according to the present invention is powered by the rotation of the flywheel.

10 - a perspective view of stator disks and permanent magnets forming part of the assembly of the motor generator according to aspects of the invention.

11 - an enlarged view of the structure shown in the lower right corner of Figure 9.

12 - enlarged view of the structure modification shown in Figure 11.

13 - a top plan view of the flywheel hub, illustrated in Figure 1, with the flywheel rings attached.

14 - the form shown in Figure 13, a limited circle XIV-XIV in Figure 13.

15 - an enlarged view of the structure shown in Figure 14, a limited circle XV-XV in Figure 14.

16 - an end view of an embodiment of a flywheel energy storage system illustrated in Figure 5, as viewed from the left side 5 and a remote vacuum chamber.

17 - a sectional view showing a shaft bearing and bearing assembly comprising inner and outer rings and bearing balls mounted about the shaft, illustrating another embodiment of the separation device and prevent vibration of the present invention.

Figure 18 - view of the arrangement shown in Figure 17, illustrating the separation to prevent vibration.

19 - enlarged view of the upper bearing assembly illustrated in Figures 1 and 2, showing lubricant shields around the bearing and a lower portion of the cassette spring preload bearing, and the cassette and the upper shield keyed to the stationary shaft.

Figure 20 - bottom plan view of the upper side of the screen shown in Figure 19, illustrating the construction of a thrust bearing with a sliding pad, preventing damaging wear of the contact surfaces under the axial preload of the load.

Figure 21 - a schematic side elevational view in partial section of the cooling system with the heat-pipe for the flywheel motor stator and the bearings of the flywheel energy storage systems, which does not require a pump for circulating liquid suitable for use with the flywheel energy storage system illustrated in Figures 1 and 3.

Figure 22 - a sectional view schematically showing the flywheel energy storage system similar to that shown in Figure 1, but using packet rings mounted on a common tube, held at both ends within the sleeve, like that shown in Figure 1, for more accumulating ability.

Figure 23 - an enlarged view of the structure shown in the lower left part of the 22.

Figure 24 - a cross-section high speed bearing assembly showing yet another aspect of the present invention using a mounting sleeve for a rotating shaft, as shown in Figures 17 and 18, and illustrating another aspect of the invention related to separation of a vibration prevention.

Figure 25 - enlarged isometric view of part of the arrangement shown in Figure 10, a limited circle XXV-XXV in Figure 10.

Figure 26 - a schematic partial sectional view of another embodiment of a device to facilitate the overcoming of the rotating body with the acceleration of the critical speed corresponding to the aspects of the present invention.

27 - cross-section view of the structure shown in Figure 26, illustrating the structure after the removal operation.

Figure 28 - a partial end view of the rotating member, showing the high-torque spline attachment of rotating bodies using the aspect of the invention relating to the separation to prevent vibration.

Figure 29 - a partial end view of the rotating member, showing a high-torque non-circular cam mount with aspects of the invention related to separation to prevent vibration.

Figure 30 - front view of an alternative embodiment of a flexible rim hub for use with flywheels in the flywheel energy storage systems of the present invention.

Figure 31 - a sectional view taken in the flexible rim hub illustrated in Figure 30.

Figure 32 - a sectional view of the flywheel energy storage flywheel device with a flexible rim hub, largely corresponding flywheel energy storage device shown in Figure 1.

Figure 33 - enlarged view of the structure shown in Figure 32, showing a modified structure using the present aspect of the invention related to separation to prevent vibration.