Abstract: A perdurable composite roller skating cylinder and methodology of making the same from low cost readily available commoditized commercial parts. In the in-line roller skating embodiment the cylinder will provide the combine features of long wear life, shock absorption and smooth running through the use of a rigid nylon core or equivalent and an appropriate longitudinal section of flexible polyurethane tubing or equivalent. This embodiment will permit flexure of the outer periphery of the perdurable composite cylinder in response to forces at the outer surface of the cylinder where it contacts the skating terrain surface. As the perdurable composite cylinder provides superior transverse angle joint support and unique cushioning for the foot. These composite cylinder attributes in an in-line skate embodiment will support an expanded dynamic roller skating maneuver repertoire.

Abstract: This sempiternal gymnoplexus with its' innate structural integrity is the nexus of a new skating paradigm which will provide both longitudinal and sinistrodextral support to the talocrural joint during both ice and roller skating maneuvers. This paradigm can accommodate various special rail sliding blocks for extreme skating, braking devices for roller skating, and contoured knife edge blades for ice skating, when the rollers, disks, or cylinders are removed from the plexus. Which will result in an unattainable, before now, a uniquely diversified skating repertoire. This paradigm also supports either hardware or belt mounting of the skaters pedal equipment. The structure also supports the necessary appurtenances that are required for this paradigm shift to be successful for disk, roller, cylinder and ice skaters of various maven levels, on multiterrains.

Abstract: This perdurable composite cylinder methodology allows for the inclusion of load cushioning or shock absorbing at the primary site of the generation of the disturbance. This is accomplished because the core to covering interference fit of the composite cylinder form a perdurable mechanical bond between the two parts and the bond is of a constant resiliency at different sections of the resultant cylinder assembly, except at the center stress relieving section. This feature can be used to provide cushioning capability in the rollers for applications where none was present heretofore. This feature may also function to augment or eliminate existing auxiliary shock absorbing mechanisms.

Abstract: In providing longitudinal bilateral support for the talocrural joint with two explicitly stabilized blades, the arrangement can be exploited by ice skaters to achieve an eclectic range of aerial, nonaerial, complex or routine ambulatory ice skating maneuvers. This novel aid to dynamic stability with its' auto correcting moment has the capability for extending a skater's performance repertoire that is, independent of technique, not a function of a skater's intrinsic endowments or specialized skating equipment for the support of the ankle/foot combination. This arrangement of ice skating blades can be ingeniously exploited by ice skaters to achieve panoplies of aerial, nonaerial, complex or routing dynamic ambulatory ice skating maneuvers.

Abstract: This perdurable composite cylinder methodology allows for the inclusion of load cushioning or shock absorbing at the primary site of the generation of the disturbance. This is accomplished because the core to covering interference fit of the composite cylinder form a perdurable mechanical bond between the two parts and the bond is of a different resiliency at different sections of the resultant cylinder assembly. This feature can be used to provide cushioning capability in the rollers for applications where none was present heretofore. This feature may also function to augment or eliminate existing auxiliary shock absorbing mechanisms.

Abstract: The disc organizational paradigms which are herein defined, provide novel disc arrangements that can be exploited by skaters to achieve an eclectic range of aerial, nonaerial, complex and routine ambulatory skating maneuvers, with a minimum number of disc for a dynamically stable geometric pattern, thus providing a novel customizing capability for extending a skater's performance repertoire that is not a function of the skater's talent endowment.

Abstract: This perdurable gymnoplexus with its' innate structural integrity is the nexus of a new paradigm which will accommodate the historical disc organizations and performance levels, while providing additional disc groupings capabilities for both enhanced and up to now, unattainable diversified performance. Thereby providing a choice as to which disc array is superior for a given employment. The structure also supports the necessary appurtenances that are required for a specific utilization.

Abstract: An improved centrifuge, including a main wheel for rotating objects to be subjected to centrifugal force about a main axis of rotation, is disclosed. Such objects are simultaneously rotated about a second axis of rotation from a first to a second position, and the centrifuge is improved by the inclusion therein of multiple reversing induction motors including a stationary stator and multiple induction rotors attached to the main wheel that eliminate electrical slip rings or mechanical linkages as controls for effecting the rotation of the objects from the first to the second position.