Disclosed herein is a caster skate apparatus to be propelled in a direction changeable manner by use of rider's both feet. The apparatus comprises front and rear boards (20, 30) to support both feet thereon, first and second rollers (22, 23) mounted to the underside of the front board at front and r
Disclosed herein is a caster skate apparatus to be propelled in a direction changeable manner by use of rider's both feet. The apparatus comprises front and rear boards (20, 30) to support both feet thereon, first and second rollers (22, 23) mounted to the underside of the front board at front and rear locations by a predetermined distance, third and fourth rollers (32, 33) mounted to the underside of the rear board at front and rear locations by a predetermined distance, a flexible connector (52) having a predetermined length and connected at opposite ends thereof to the front and rear boards to allow the front and rear boards to independently move within a predetermined range. A rotating center of each of the first and third rollers is spaced apart from an axis, having a predetermined inclination angle with respect to undersides of the respective boards, by a predetermined distance.
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The invention claimed is: 1. A caster skate apparatus which is propelled in a direction changeable manner by use of both feet of a rider for providing the rider with exercise effect, comprising: a front board to support one foot thereon; first and second rollers mounted to the underside of the fron
The invention claimed is: 1. A caster skate apparatus which is propelled in a direction changeable manner by use of both feet of a rider for providing the rider with exercise effect, comprising: a front board to support one foot thereon; first and second rollers mounted to the underside of the front board by a predetermined distance while being aligned in series at front and rear locations along a center axis, to perform rolling motions on the ground; a rear board arranged at the rear side of the front board to support the other foot thereon; third and fourth rollers mounted to the underside of the rear board by a predetermined distance while being aligned in series at front and rear locations along a center axis, to perform rolling motions on the ground; and a flexible connector having a predetermined length, one end of the flexible connector being connected to a rear end of the front board, and the other end of the flexible connector being connected to a front end of the rear board, so that both the front and rear boards are able to independently move within a predetermined range, wherein a rotating center of each of the first and third rollers is spaced apart from an axis, having a predetermined inclination angle with respect to undersides of the respective boards, by a predetermined distance. 2. A caster skate apparatus which is propelled in a direction changeable manner by use of both feet of a rider for providing the rider with exercise effect, comprising: a front board to support one foot thereon; first and second rollers mounted to the underside of the front board by a predetermined distance while being aligned in series at front and rear locations along a center axis, to perform rolling motions on the ground; a rear board arranged at the rear side of the front board to support the other foot thereon; third and fourth rollers mounted to the underside of the rear board by a predetermined distance while being aligned in series at front and rear locations along a center axis, to perform rolling motions on the ground; and a flexible connector having a predetermined length, one end of the flexible connector being connected to a rear end of the front board, and the other end of the flexible connector being connected to a front end of the rear board, so that both the front and rear boards are able to independently move within a predetermined range, wherein a rotating center of each of the first and third rollers is spaced apart from an axis, having a predetermined inclination angle with respect to undersides of the respective boards, by a predetermined radius, and wherein a rotating center of each of the second and fourth rollers is spaced apart from a rear rotating axis, which is perpendicular to the undersides of the respective boards, by a predetermined distance. 3. A caster skate apparatus which is propelled in a direction changeable manner by use of both feet of a rider for providing the rider with exercise effect, comprising: a front board to support one foot thereon; first and second rollers mounted to the underside of the front board by a predetermined distance while being aligned in series at front and rear locations along a center axis, to perform rolling motions on the ground; a rear board arranged at the rear side of the front board to support the other foot thereon; third and fourth rollers mounted to the underside of the rear board by a predetermined distance while being aligned in series at front and rear locations along a center axis, to perform rolling motions on the ground; and a flexible connector having a predetermined length, one end of the flexible connector being connected to a rear end of the front board, and the other end of the flexible connector being connected to a front end of the rear board, so that both the front and rear boards are able to independently move within a predetermined range, wherein a rotating center of each of the first to fourth rollers is spaced apart from an axis having a predetermined inclination angle with respect to undersides of the respective boards, by a predetermined distance. 4. The apparatus as set forth in claim 1, wherein the connector is a flexible wire rope. 5. The apparatus as set forth in claim 1, wherein the connector is a chain formed by interconnecting a plurality of rings. 6. The apparatus as set forth in claim 1, wherein the connector is a steel wire. 7. The apparatus as set forth in claim 1, wherein the connector is provided with length-adjustment members to adjust the distance between the two boards. 8. The apparatus as set forth in claim 2, wherein the connector is a flexible wire rope. 9. The apparatus as set forth in claim 2, wherein the connector is a chain formed by interconnecting a plurality of rings. 10. The apparatus as set forth in claim 2, wherein the connector is a steel wire. 11. The apparatus as set forth in claim 2, wherein the connector is provided with length-adjustment members to adjust the distance between the two boards. 12. The apparatus as set forth in claim 3, wherein the connector is a flexible wire rope. 13. The apparatus as set forth in claim 3, wherein the connector is a chain formed by interconnecting a plurality of rings. 14. The apparatus as set forth in claim 3, wherein the connector is a steel wire. 15. The apparatus as set forth in claim 3, wherein the connector is provided with length-adjustment members to adjust the distance between the two boards.
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