Classifications

• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C17/00—Roller skates; Skate-boards
  • A63C17/0033—Roller skates; Skate-boards with a castor wheel, i.e. a swiveling follow-up wheel
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C17/00—Roller skates; Skate-boards
  • A63C17/01—Skateboards
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C17/00—Roller skates; Skate-boards
  • A63C17/01—Skateboards
  • A63C17/011—Skateboards with steering mechanisms
  • A63C17/012—Skateboards with steering mechanisms with a truck, i.e. with steering mechanism comprising an inclined geometrical axis to convert lateral tilting of the board in steering of the wheel axis
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C17/00—Roller skates; Skate-boards
  • A63C17/01—Skateboards
  • A63C17/014—Wheel arrangements
  • A63C17/016—Wheel arrangements with wheels arranged in one track
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C17/00—Roller skates; Skate-boards
  • A63C17/12—Roller skates; Skate-boards with driving mechanisms
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C2203/00—Special features of skates, skis, roller-skates, snowboards and courts
  • A63C2203/02—Special features of skates, skis, roller-skates, snowboards and courts enabling transverse riding, i.e. with one runner or skate per foot and direction transverse to the foot
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C2203/00—Special features of skates, skis, roller-skates, snowboards and courts
  • A63C2203/40—Runner or deck of boards articulated between both feet

Definitions

• the present invention relates to a caster skate apparatus which can achieve easy propulsion and change in the direction of travel as a rider twists his/her ankles or turns his/her body to the right and left, thereby increasing the enjoyment of the rider.
• skateboards As a representative example of sporting goods wherein a rider places both feet on the board deck while coasting and maneuvering, skateboards are well known.
• Disadvantages associated with the conventional skateboard include the fact that the skateboard rider has to push the ground with one foot to achieve additional speed or propulsion when the propulsion of the skateboard is achieved by the rolling of the rollers on the ground. Also, the skateboard inevitably requires a large turning radius when changing the direction of travel or making a U-turn. This results in the need of a large riding space and the rider derives no pleasure from being able to perform delicate movements while riding.
• Korean Patent Registration No. 10-0394848 discloses a skateboard with direction-casters.
• the disclosed skateboard comprises a pair of front and rear boards and a connecting element for holding one board at each end and maintaining a predetermined distance between both the boards. At least one of the two boards includes one or more direction-casters attached to the underside thereof.
• the connecting element is made of an elastic material, so that the connecting element can restore its original shape as soon as any twisting or bending force, applied thereto, is removed.
• the skateboard rider obtains a propulsive force by alternately leaning both feet to one side or the other side based on a twisting motion of the elastic connecting element.
• the direction-casters rotate back and forth about their respective axes by a predetermined rotating angle. In this case, the components of force of the direction- casters generate a propulsive force which propels the skateboard.
• the two boards, bound with each other via the elastic element require a large turning radius to change the direction of travel to the left and right or to make a U-turn. Accordingly, changing the direction of travel of the boards has the need of a large space and cannot be rapidly performed. This may be a factor of making the skateboard less safe to use.
• the prior art skateboard has a fixed length.
• the skateboard may often be unsuitable for the rider's body size.
• the skateboard may be too big for small-sized people or too small for large-sized people to conveniently maneuver the skateboard. Disclosure of Invention Technical Problem
• the present invention has been made in view of the above problems, and it is an object of the present invention to provide a caster skate apparatus in which two boards, for supporting both feet of a rider thereon, can move independently while maintaining a predetermined distance therebetween, whereby the boards can achieve a high propulsive force from independent movements of rollers and can easily make turns with a small turning radius.
• 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
• 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
• 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
• the connector may be a flexible wire rope.
• the connector may be a chain formed by interconnecting a plurality of rings.
• the connector may be a steel wire.
• the connector may be provided with length-adjustment members to adjust the distance between the two boards.
• the caster skate apparatus of the present invention has the following effects.
• the caster skate apparatus comprises a pair of boards interconnected by means of a flexible connector.
• both the boards can move independently by virtue of the flexible connector, to be repeatedly turned to the right and left. Accordingly, as the rider twists his/her ankles or turns his/her body to the right and left, the boards can be propelled with the ability to easily change direction by use of a propulsive force obtained in accordance with the rotating and rolling motions of rollers mounted on the undersides of the boards.
• the overall length of the connector is adjustable within a predetermined maximum value. This allows the rider to maneuver the caster skate apparatus more delicately, and to make a turn within a small turning radius. Therefore, the rider can ride the caster skate apparatus even in a narrow space and providing more exercise.
• the length adjustable connector enables the distance between the two boards to be adjusted within a predetermined range, the overall size of the caster skate apparatus can be adjusted to suit the body size of the rider.
• the caster skate apparatus of the present invention can achieve a reduction in the turning radius of the boards, enabling delicate cornering maneuvers. Further, since the rider has to repeatedly change the relative positions of both feet placed on the two boards while maneuvering, the caster skate apparatus of the present invention can provide serious exercise.
• FIG. 1 is a bottom perspective view illustrating a caster skate apparatus in accordance with a first embodiment of the present invention
• FTG. 2 is a front view of HG. IA;
• FlG. 3 is a view illustrating the use of the caster skate apparatus in accordance with the first embodiment of the present invention
• FlG. 4 is a partial enlarged view illustrating a roller mounted to the caster skate apparatus in accordance with the present invention
• FIGS. 5 A to 5C are views illustrating the layout of rollers of the caster skate apparatus in accordance with the first embodiment of the present invention, FlG. 5 A illustrating the orientation of boards in an initial riding state, and FIGS. 5B and 5C illustrating different orientations of boards when making a right-turn and a left-turn, respectively;
• FlG. 6 is a front view illustrating a caster skate apparatus in accordance with a second embodiment of the present invention.
• FlG. 7 is a front view illustrating a caster skate apparatus in accordance with a third embodiment of the present invention.
• FIGS. 8, 9, and 10 are partial front views illustrating alternative examples of a connector for use in the caster skate apparatus in accordance with the present invention.
• FIGS. 1 and 2 illustrate a caster skate apparatus 1OA in accordance with a first embodiment of the present invention.
• FlG. 3 is a view illustrating the use of the caster skate apparatus in accordance with the present invention.
• the caster skate apparatus 1OA is designed to be propelled as a rider turns his/her body to the right and left. In this case, both legs of the rider serve as rotating axes Zl and Z2.
• the caster skate apparatus 1OA is also able to change the direction of travel easily.
• the caster skate apparatus 1OA of the present invention effectively increases the enjoyment of the rider.
• the caster skate apparatus 1OA comprises: a front board 20 to support one foot thereon; a rear board 30 arranged at the rear side of the front board 20 to support the other foot thereon; and a flexible connector having a predetermined length. One end of the flexible connector is connected to a rear end of the front board 20, and the other end is connected to a front end of the rear board 30, so that both the front and rear boards 20 and 30 can move independently while maintaining a predetermined distance therebetween.
• the caster skate apparatus 1OA of the present invention further comprises: first and second rollers 22 and 23 mounted to the underside of the front board 20 by a predetermined distance; and third and fourth rollers 32 and 33 mounted to the underside of the rear board 30 by a predetermined distance. The first and second rollers 22 and 23 and the third and fourth rollers 32 and
• each of the first roller 22 and the third roller 32 has a rotating center O, which is spaced apart from an axis C having a predetermined inclination angle ⁇ with respect to the undersides of the respective boards 20 and 30, by a predetermined distance r.
• each of the first and third rollers 22 and 32 is adapted to rotate about the inclined axis C while simultaneously rotating about the rotating center O thereof.
• the predetermined inclination angle ⁇ of the axis C of the rollers 22 and 32 provides the rollers 22 and 32 with a braking force when the rollers 22 and 32 reach their rotation limits.
• the inclination angle ⁇ may be determined in a range of 25° to 45°. If the predetermined inclination angle ⁇ is more than 45°, it makes the rollers 22 and 32 difficult to generate a propulsive force. Conversely, if the predetermined inclination angle ⁇ is less than 25°, the rollers 22 and 32 are impossible to obtain a required braking force.
• the first and third rollers 22 and 32 are connected to lower ends of oblique arms 24 and 34, respectively. Upper ends of the arms 24 and 34 are connected to brackets 25 and 35 to rotate about the axis C, respectively. Ball bearings 26 and 36 are interposed between the arm 24 and the bracket 25 and between the arm
• the arms 24 and 34 are rotatably mounted by the use of the ball bearings 26 and 36.
• the axes Al and A2 are aligned based on ground points where the second and fourth rollers 23 and 33 come into contact with the ground.
• the second and fourth rollers 23 and 33 may be modified in shape, as shown in FIGS. 6 and 7.
• FlG. 6 illustrates a caster skate apparatus 1OB in accordance with a second embodiment of the present invention.
• the second and fourth rollers 23 and 33 are fixedly mounted to the respective boards 20 and 30 by interposing linear arms 24B and 34B, respectively, to perform rolling motions on the ground.
• FlG. 7 illustrates a caster skate apparatus 1OC in accordance with a third embodiment of the present invention.
• the second and fourth rollers 23 and 33 are spaced apart from rear rotating axes Cl of the respective boards 20 and 30 by a predetermined distance rl through the use of bent arms 24C and 34C, to perform rolling motions on the ground.
• the ball bearings are also mounted around the rotating axes Cl in the same manner as FlG. 4.
• the connector for interconnecting the front board 20 and the rear board
• the connector is selected from among members having a desired flexibility.
• the connector may be a wire rope 52 having an appropriate diameter as shown in FlG. 8, or may be a chain 53 consisting of a plurality of rings as shown in FlG. 9.
• the connector may be another steel wire.
• the desired flexibility of the connector is determined so that the connector is difficult to extend in a longitudinal extension, but is easy to be twisted or flexibly contracted in a longitudinal direction.
• the connector employed in the present invention allows the two boards 20 and 30 to independently move while maintaining a predetermined distance therebetween. Also, the connector serves to limit the maximum straddle angle ⁇ between both feet of the rider placed on the boards 20 and 30.
• the connector may be provided with length-adjustment members, to adjust the distance between the two boards 20 and 30.
• FlG. 10 illustrates an example of the length-adjustment members.
• the steel wire 54 is provided with a plurality of knot-shaped lockers 55.
• two connection loops 5 are provided at a rear end of the front board 20 and a front end of the rear board 30, respectively.
• the lockers 55 of the wire rope 52 are adapted to be caught by the connection loops 5 of the front and rear boards 20 and 30.
• each of the respective rollers 22, 23, 32, and 33 is mounted to rotate about the axis C having the predetermined inclination angle ⁇ at a position spaced apart from the axis C by the predetermined distance r.
• the rider slightly shifts the center of his/her body rearward, and twists his/her ankles in directions indicated by arrows 101 and 102.
• the distance between both the boards 20 and 30 is limited in accordance with the operation of the connector 52 or 53.
• the connector is the flexible wire rope 52, it ensures the free movement of both feet on the boards 20 and 30 to some extent.
• the first, second, third, and fourth rollers 22, 23, 32, and 33 perform rotating motions by a predetermined rotating angle while simultaneously performing rolling motions, as shown in FIGS. 5B and 5C.
• the rollers 22 and 23 face the pulled direction. Conversely, when the rider pushes the front board 20, the rollers 22 and 23 face the pushed direction. As the pulling and pushing operations are repeated, the boards 20 and 30 are moved leftward and rightward to thereby be propelled in directions indicated by arrows 11, 12, 13, and 14 of FIG. 4. In this case, the rotating angles of the first and third rollers 22 and 32 are larger than the rotating angles of the second and fourth rollers 23 and 33.
• the propulsion of the caster skate apparatus is achieved as the first, second, third, and fourth rollers 22, 23, 32, and 33 continuously perform rotating and rolling motions and by the use of the height variation of the boards 20 and 30. Accordingly, the speed of traveling and the strength of the propulsive force are determined by how fast the rider twists his/her ankles or turns his/her body to the right and left.
• the second and fourth rollers 23 and 33 operate in the same manner as the first and third rollers 22 and 32 although they exhibit a smaller rotating angle than the first and third rollers 22 and 32.
• the second and fourth rollers 23 and 33 also act to lead the independent parallel movements of both the boards 20 and 30.
• the caster skate apparatus since both the separate boards 20 and 30 are connected by use of the flexible connector, the caster skate apparatus is able to easily pass through a narrow space. That is, the flexible connector allows for the independent movements of both the boards 20 and 30. Accordingly, the rider can turn the boards 20 and 30 to the right and left or make a U-turn within a small turning radius while achieving his/her delicate maneuvering operation.
• the boards 20 and 30 are propelled by use of the twisting motions of the rider's ankles rather than the pushing motions of both feet. This is a factor in improving the ability to easily change the direction of travel of the caster skate apparatus.
• the distance between the boards 20 and 30 can be easily adjusted by adjusting the length of the connector. Accordingly, the overall size of the caster skate apparatus can be adjusted to suit the body size of the rider.
• the rider may utilize the boards 20 and 30 as another type of sledding tool along with poles.
• the caster skate apparatus of the present invention has the following effects.
• the caster skate apparatus comprises a pair of boards interconnected by means of a flexible connector.
• both the boards can move independently by virtue of the flexible connector, to be repeatedly turned to the right and left. Accordingly, as the rider twists his/her ankles or turns his/ her body to the right and left, the boards can be propelled with the ability to easily change direction by use of a propulsive force obtained in accordance with the rotating and rolling motions of rollers mounted on the undersides of the boards.
• the overall length of the connector is adjustable within a predetermined maximum value. This allows the rider to maneuver the caster skate apparatus more delicately, and to make a turn within a small turning radius. Therefore, the rider can ride the caster skate apparatus even in a narrow space and providing more exercise.
• the length adjustable connector enables the distance between the two boards to be adjusted within a predetermined range, the overall size of the caster skate apparatus can be adjusted to suit the body size of the rider.
• the caster skate apparatus of the present invention can achieve a reduction in the turning radius of the boards, enabling delicate cornering maneuvers. Further, since the rider has to repeatedly change the relative positions of both feet placed on the two boards while maneuvering, the caster skate apparatus of the present invention can provide serious exercise.

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• Motorcycle And Bicycle Frame (AREA)
• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36565297

Family Applications (1)

Country Status (6)

Cited By (6)

Families Citing this family (27)

Citations (5)

Family Cites Families (11)

• 2004
  • 2004-12-03 KR KR20-2004-0034401U patent/KR200378760Y1/ko not_active Ceased
• 2005
  • 2005-12-02 EP EP05821420A patent/EP1827624A4/en not_active Withdrawn
  • 2005-12-02 WO PCT/KR2005/004091 patent/WO2006059883A1/en not_active Ceased
  • 2005-12-02 US US11/572,557 patent/US7484742B2/en not_active Expired - Fee Related
  • 2005-12-02 EP EP08012623A patent/EP2000183A1/en not_active Withdrawn
  • 2005-12-02 CN CN2005800262323A patent/CN101001675B/zh not_active Expired - Fee Related
  • 2005-12-02 JP JP2007544268A patent/JP4872115B2/ja not_active Expired - Fee Related

Patent Citations (5)

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