Abstract: A drive-wheel suspension mechanism for a smart movable device and a smart movable device, include a drive wheel bracket, a gearbox and a resilient reset member. The drive wheel bracket is provided with at least one set of sliding slot assembly arranged oppositely. The sliding slot assembly includes two first sliding slots arranged opposite to each other, and the first sliding slot extends rearward and an included angle between the first sliding slot and a horizontal plane is greater than or equal to 0 degree.

Abstract: A specially formed ball shaped disc 40 to 50 mm in diameter to be utilized on the PIC® inline skate, U.S. Pat. No. 5,738,360, to allow for extreme jumps, spins, and footwork moves in the sport of inline figure skating. The ball pick disc is made of molded rubber or synthetic material. The purpose of the ball pick is to provide extreme deep edges for enhanced spins, jumps, and footwork common in the sport of inline figure skating while protecting the skate frame from scraping. The ball shape is slotted to fit around the frame thus protecting the frame from scraping and allows the skater to achieve extremely deep edges. The ball shape provides 180 degrees of surface allowing the skater unlimited toe-in angles. The configuration of the disc allows the ball pick to be reversed to extend wear.

Abstract: The present invention relates to a roller ski or board, said ski or board providing in-line central rollers, centrally provided on the ski or board body, and two pairs of additional rollers, respectively a front pair and a rear pair, said pair of rollers being raised with respect to the ground on which ski or board rests when the same ski or board is substantially parallel with respect to the ground, and contacting the same ground when ski or board is inclined, each one of the additional rollers is coupled with the ski or board by a support system comprising a fork, having one end coupled with the roller and the other one faced toward the ski or board, between the end of the fork faced toward the ski or board and the same ski or board being provided with a resilient element.

Abstract: A specially formed cylindrical disc, set in a fixed position, to be utilized on the PIC® inline skate to allow for jumps and spins in the sport of inline figure skating. The performance pick disc is made of molded rubber or synthetic material. The purpose of the performance pick is to provide enhanced spins, jumps, and footwork common in the sport of inline figure skating. The continuous curved shape of the performance pick discs outer edges provides a toe-in angle of between 0 and 22 degrees, the optimal angle being between 5 and 12 degrees for jumps and 0 to 5 degrees for spins. In a variation, the outer edges are slanted at an angle between 20 and 45 degrees on both sides continuously around the cylindrically formed disc to provide an optimal surface for push offs common in inline figure skating maneuvers.

Abstract: The present invention relates to a roller ski or board, said ski or board providing in-line central rollers, centrally provided on the ski or board body, and two pairs of additional rollers, respectively a front pair and a rear pair, said pair of rollers being raised with respect to the ground on which ski or board rests when the same ski or board is substantially parallel with respect to the ground, and contacting the same ground when ski or board is inclined, each one of the additional rollers is coupled with the ski or board by a support system comprising a fork, having one end coupled with the roller and the other one faced toward the ski or board, between the end of the fork faced toward the ski or board and the same ski or board being provided with a resilient element.

Abstract: The roller skate according to the invention is equipped with smaller inline rollers (40) arranged below the boot (10) and with outer, larger rollers (30), the upper parts of which protrude above the boot sole (11). This roller skate can be moved on four rollers (30) and (40) in the manner of a four-wheel roller skate, or, in certain phases, just on two inline rollers (40) in a similar manner to an inline skate.

Abstract: The present invention teaches an apparatus and method for removably securing an article of footwear suitable for walking, running, or bicycling to a wheeled skate. Further, the present invention also teaches a brake device for use with a wheeled skate. In addition, the present invention teaches a wheeled skate including a suspension system that can be propelled with the use of linear or side stroke skating techniques. Moreover, the present invention teaches a quad wheeled skate having advantageous structure and function for recreational skating and aerobic exercise.

Abstract: The present invention teaches an apparatus and method for removably securing an article of footwear suitable for walking, running, or bicycling to a wheeled skate. Further, the present invention also teaches a brake device for use with a wheeled skate. In addition, the present invention teaches a wheeled skate that can be propelled with the use of linear or side stroke skating techniques. Moreover, the present invention teaches a quad wheeled skate having advantageous structure and function for recreational skating and aerobic exercise.

Abstract: A steerable inline skate which allows user to change direction more easily and reduce the abrasion of wheels to thus lengthen the life of the wheels by allowing front and rear wheels 30 and 50 among a plurality of wheels arranged in a line to be steered within a predetermined angle utilizing the structure of a trapezoidal linkage.

Abstract: A braking system preferably for an in-line skate includes a brake pad mounted to a forward end of a skate frame and an elevated front wheel attached to the skate frame by two pivot arms. The pivot arms are biased forward which is in a clockwise direction with respect to their pivot point. When skating normally, the pivot arms bias the wheel against the brake pad, but the wheel is elevated from the skating surface and thus the brake is not engaged. When skating in a rearward direction, or desiring a push start, the skater rotates the toe portion of the skate downward and raises the heel. The front wheel will engage the skating surface and the reaction force on the wheel due to friction between it and the skating surface will urge the wheel forward and increase the contact pressure between it and the brake pad.

Abstract: A combined structure of a sports shoe and an in-line skate mainly comprises an in-line wheel device buried in the shoe bottom of a sports shoe. The in-line wheel device comprises a base, whereon a linkage set, a position plate, a wheel position mechanism and a torsion spring are combined in order at both sides by position pins and shaft bars and arrangement at each side is homologous with the other side such that wheels are set among two sides and arranged in in-line state. Besides, a control mechanism is combined to the rear of the base and can control wheels to be unfolded and taken in automatically such that the shoe body combined with an in-line wheel device can take wheels in the sole ordinarily for walking and running, and unfold wheels automatically when the user wants to take skating sport.

Abstract: Four wheel in-line skate, having a half-boot type inner footwear portion and an outer rigid portion made up of a first tip front portion and a second rear portion surrounding ankle and heel. Within the first and second portions are housed the inner footwear portion. The first front portion and the second rear portion of the skate are fixedly coupled each other by a flexible coupling of the lamina or spring kind, provided in correspondence of the underlying portion of the same in such a way to allow their movement and the automatic return to an alignment position. The front and rear portions are provided with vertical elements, perpendicularly provided with respect to the plane of the skate, provided at least partially one within the other, and within each one of couples of vertical elements wheels are provided, connected with the same by pins.

Abstract: A braking system preferably for an in-line skate includes a brake pad mounted to a forward end of a skate frame and an elevated front wheel attached to the skate frame by two pivot arms. The pivot arms are biased forward which is in a clockwise direction with respect to their pivot point. When skating normally, the pivot arms bias the wheel against the brake pad, but the wheel is elevated from the skating surface and thus the brake is not engaged. When skating in a rearward direction, or desiring a push start, the skater rotates the toe portion of the skate downward and raises the heel. The front wheel will engage the skating surface and the reaction force on the wheel due to friction between it and the skating surface which will urge the wheel forward and increase the contact pressure between it and the brake pad.

Abstract: An in-line skate has an auxiliary wheel rotatably mounted in a raised position relative the primary wheels at the side of the longitudinal alignment of primary wheels. A conventional in-line skate can be retrofitted with an auxiliary-wheel assembly having an auxiliary wheel mounted for rotation on an axle journalled onto a mounting member, which assembly can be easily attached to a conventional in-line skate. Using such an in-line skate, a hockey stop can be readily performed in a method of in-line skating.

Abstract: A roller skate includes at least one mounting plate affixed or integral to an article of footwear, a bilateral frame, a plurality of axles, and a plurality of wheels. The bilateral frame is affixed to each mounting plate. The frame also includes a plurality of axle journals angularly disposed to one another. A plurality of axles are supported at each end by one of the axle journals. At least one of the axles is nonparallel to at least another one of the axles. A plurality of wheels are disposed upon the axles.

Abstract: Skates with in-line wheels, each comprising a supporting structure to which supports are connected for a plurality of wheels, wherein at least one of the central wheels is coupled to the supporting structure so that it can change the level of its rotation axis.