Abstract: A light is mounted on each one of a plurality of movable light supporting carts. The carts are moved along a predefined path. The lights can be energized to produce light beams as the carts move. Alternatively, the lights may remain off as the carts are controllably moved along the path to position each cart at a selected location along the path, and the lights energized after the carts are position. The carts, or selected carts, can be controllably moved at a selectably variable speed or speeds and/or in a selectably variable direction or directions while the lights are energized to produce the light beams. The lights themselves can be controllably moved with respect to their respective support carts, to controllably pan, tilt, swivel, etc. each light as the carts move, thereby facilitating production of a wide range of illumination effects.

Abstract: A light is mounted on each one of a plurality of movable light supporting carts. The carts are moved along a predefined path. The lights can be energized to produce light beams as the carts move. Alternatively, the lights may remain off as the carts are controllably moved along the path to position each cart at a selected location along the path, and the lights energized after the carts are position. The carts, or selected carts, can be controllably moved at a selectably variable speed or speeds and/or in a selectably variable direction or directions while the lights are energized to produce the light beams. The lights themselves can be controllably moved with respect to their respective support carts, to controllably pan, tilt, swivel, etc. each light as the carts move, thereby facilitating production of a wide range of illumination effects.

Abstract: An in-line roller skate comprising: (a) a boot with a heel and toe adapted to receive a foot of a skater; (b) a first wheel supporting rail secured to an underside of the boot and extending from the heel to the toe, the first rail having an opening therein between the heel and the toe to thereby form upper and lower first rail regions; (c) a second wheel supporting rail secured to an underside of the boot, and extending from the heel to the toe adjacent and generally parallel to the first rail, the second rail having an opening therein between the heel and the toe to thereby form upper and lower rail regions; (d) a plurality of wheels mounted in tandem in a line between the first and second rail, the wheels being respectively connected to the lower regions of the first and second rail by respective axles; and (e) at least one first resilient shock absorbing member located between the upper and lower regions of the first rail; (f) at least one second resilient shock absorbing member located between the upper a