Abstract: An adjustment tool enables manipulation of a prosthetic anatomical device such as an annuloplasty ring. The tool includes a compression member which is operative for retarding rotation of the adjustment shaft to preclude inadvertent rotation thereof during use of the tool by the surgeon. A locking device is associated with the adjustment tool to enable the releasable attachment of the tool to the anatomical device during its adjustment by manipulation of the tool. The locking device is oriented into operative and inoperative positions by the engagement and disengagement of locking elements. A scale may be provided on the adjustment tool to assist a surgeon in determining the size or amount of adjustment to the size of the anatomical device during its adjustment.

Abstract: A roller skate having enhanced durability and stability is disclosed. The skate includes a platform for supporting a skater's foot. The platform includes a toe plate and heel plate connected by an adjustable connecting assembly. A front truck is affixed to the underside of the toe plate, while a rear truck is affixed to the underside of the heel plate. The front truck includes simple bracket arms for affixing a single front wheel which is capable of rotating, but not capable of tilting about the platform's longitudinal axis. Meanwhile, the rear wheel truck is mounted to the underside of the heel plate so as to permit both tilting movement about an inclined longitudinal axis, and also rotation about a transverse axis relative to the roller skate's platform. Preferably, the roller skate includes three wheels rotatably mounted to the rear wheel truck.

Abstract: A skate sole assembly has a boot bracket, a frame, two cushioning bearings and two axles. The frame is mounted under the boot bracket and has an arcuate plate and two outer supporting arms. The arcuate plate has two inner supporting arms corresponding to the outer supporting arms. The cushioning bearings are embedded respectively in connecting ends of the outer supporting arms and respectively receive connecting ends of the inner supporting arms. Each axle is rotatably mounted through the connecting end of one inner supporting arm, the connecting end of one outer supporting arm and one cushioning bearing. The frame is made of rigid material to stabilize the motion of a user wearing skates which are assembled from the skate sole assemblies. The cushioning bearings provide a cushioning effect.

Abstract: A wearable device configured to selectively provide roller transportation, the wearable device including a shoe, a plurality of wheel assemblies, each wheel assembly being configured to selectively roll relative to a ground surface about an associated axis of rotation, and a frame connected between the wheel assemblies, the frame comprising a trunk and a plurality of branches extending from the trunk, each of the branches being configured for connection to at least one of the plurality of wheel assemblies, wherein at least a portion of the shoe is located vertically higher than at least a portion of the frame when at least one of the wheel assemblies is in contact with the ground surface and the at least one of the wheel assemblies is positioned to selectively roll relative to the ground surface.

Abstract: A safe roller shoe structure contains a body and a base, the base includes four rollers, characterized in that a pedal is lower than an upper periphery of each roller to lower a gravity center of legs in exercise; the pedal includes the four seats four integrally formed and extending from two sides thereof to correspond to the four rollers.

Abstract: Provided is a rear wheel toe angle control system that can prevent the impairment of the tracking performance of the electric actuator and enable the rear wheel toe angle control system to ensure the stability of the vehicle even when the electric actuator for steering the rear wheel according to the operating condition of the vehicle is subjected to an axial force. An ECU (12) serving as a rear wheel toe angle control unit for variably controlling the rear wheel toe angle (?r) of the motor vehicle (V) by using an electric actuator (11) is provided with a duty ratio correcting unit (25) that corrects the target duty ratio (Dtgt) for achieving the target rear wheel toe angle (?rtgt) according to the load condition of the electric actuator (11) that depends on the lateral acceleration (Gy) of the motor vehicle (V).

Abstract: In-line roller skate (1), in particular racing skate, comprising a pair of side frame elements (5a, 5b), joined to each other by at least a transversal frame element (5c), between which a front wheel (7a), a rear wheel (7d) and at least two intermediate wheels (7b, 7c) are pivotally mounted, and a skate boot (3) provided with a sole (3a), said boot being fastened to said frame through a fastening portion (9), wherein said fastening portion (9) is located between said sole and said frame in a substantially central region (F) in the longitudinal direction between said front and rear wheels.

Abstract: A roller skate having enhanced steerability and stability is disclosed. The skate includes a platform for supporting a skater's foot and front and rear wheel trucks secured to the underside of the platform. A pair of front wheels is rotatably mounted in transverse axial alignment on the front wheel truck and a pair of rear wheels is rotatably mounted in transverse axial alignment on said rear wheel truck. The pairs of front and rear wheels are also in parallel axial alignment with each other and mounted on their respective wheel trucks for resiliently controlled, tilting movement about downwardly inclined longitudinal axis. In addition, a fifth wheel is rotatably mounted on the front wheel truck between the pairs of front and rear wheels and in parallel axial alignment with the wheel pairs. An additional preferred roller skate includes a single wheel rotatably mounted to the front toe plate. The front wheel is not tiltable about the skate's longitudinal axis.

Abstract: To reliably prevent re-lifting of a rear wheel immediately after landing of the rear wheel. When it is determined that output of a detection signal corresponding to detection of lifting of a rear wheel has ended (S102), brake pressure—and specifically a pressure increase gradient of a wheel cylinder pressure of a front wheel—is reduced, and the pressure increase gradient that has been reduced is maintained until it is determined that vehicle body deceleration has fallen below a predetermined value K1 (S108, S110), whereby re-lifting of the rear wheel caused by an increase in brake pressure at a high pressure increase gradient after landing of the rear wheel can be reliably prevented.

Abstract: Skate, either an in-line roller skate or an ice skate, comprising a frame carrying on or more sliding elements, and a skate boot provided with a sole, said boot being fastened to said frame through a fastening portion, wherein said fastening portion is located between said sole and said frame in a substantially central region in the longitudinal direction of said frame.

Abstract: An apparatus for operating a roller up and down is provided, which includes a main body fixed to a bottom of a shoe, an operating body to which the roller is imbedded, which is slidably mounted within the main body, and an operating assembly to move the operating body within the main body between an operating position and a non-operating position, wherein the roller protrudes out from the main body in the operating position while the roller is retracted into the main body in the non-operating position. A wearer of a shoe is capable of shifting the shoe between an operating position in which the roller protrudes out from the bottom of the shoe and a non-operating position in which the roller is retracted into the bottom of the shoe, by a simple operation. Accordingly, the shoe can be used as a roller shoe when the roller is in the operating position, and used as a general walking shoe for everyday use when the roller is in the non-operating position.

Abstract: The present invention provides a kind of skate, including a boot and a skating device connected to the boot, wherein the skating device is arranged along the width direction of the boot. The skate further includes a skating device mount for mounting the skating device to the boot, wherein the skating device can rotate 360 degree under the boot. The transverse skating device under the boot enables the sideward sliding direction, which bring more fun to the skaters. When the skating device is rotated to an angle and locked, the skate can slide inclinedly, which bring more challenges to the skaters. The skating device can rotate 360 degree freely or rotate different angle from two boots under the boot, which can cancel the shift of the knock-knee. The skating device can also be adjusted to be in line on the longitudinal direction as a traditional roller skate or ice skate.

Abstract: The present invention relates to a roller skate frame. The roller skate frame includes a plate being pressing molded into a main frame of the roller skate comprising two wheel-mounting plates corresponding to each other, and a front bottom connecting face and a shoe-mounting plate connecting thereto. The front bottom connecting face and the shoe-mounting plate are spaced apart with a suitable distance. Further, the front bottom connecting plate is formed by an upper and a lower bridging plate corresponding to each other, and both of which are positioned with a fastener hole respectively.

Abstract: The present invention refers to a skate with in-line rollers or ice-skating blades, comprising: a boot provided with a sole comprising a heel portion, a central portion and a toe portion; a chassis acting as a support for said sole to rest thereupon, and including a first carriage and a second carriage that are capable of moving relative to each other and adapted to support at least a front roller or blade and at least a rear roller or blade respectively; the first carriage comprises a first plate for said heel portion to rest thereupon, from which there extends towards the front portion of the skate a first arm that is adapted to support at least said front roller or blade, and the second carriage comprises a second plate for the toe portion to rest thereupon, from which there extends towards the rear portion of the skate a second arm that is adapted to support at least said rear roller or blade; the first and second carriages overlap each other approximately at the central portion of the sole.

Abstract: An articulating chassis for skates with accompanying boot comprises: a plurality of brackets, a first set of rollers and a second set of rollers, and at least one articulating member. The brackets have a first side and a second side. The first side affixes with the boot and the second side affixes with the rollers. The first set of rollers having a first side, a second side, and a rolling surface. The second set of rollers having a top side and a bottom side and a tread surface. The rolling surface of the first set of rollers has a width smaller than the tread surface of the second set of rollers.

Abstract: A quad roller skate for use on outdoor surfaces that has a unified structure that includes a quad boot permanently secured to a horizontal support plate and skate forward and rearward trucks permanently secured to the support plate. The front and rear left and right skates lie in left and right vertical planes spaced from the maximum side edges of the boot. The skate wheels have apexes that extend to a horizontal plane at least as high as the plane of the horizontal support plate and can extend higher. Each of the wheels preferably are thin width wheels and have semi-circular profiles.

Abstract: An inline skate wheel assembly includes a loop that has a centrally disposed opening extending therethrough. The loop has an inner perimeter surface having a ring integrally attached thereto. A hub assembly includes a cylinder that has a first end and a second end. The first and second ends are open. A first perimeter flange is attached to an outer surface of the cylinder and abuts the first end. A second perimeter flange is attached to the outer surface of the cylinder and abuts the second end. The cylinder has a break therein so that a first portion and a second portion of the cylinder are defined. An axle may be extended through the cylinder when the first and second portions are extended into the loop and abutted against the ring so that the cylinder is rotatably mounted on the axle. The axle is secured to an inline skate track.

Abstract: A shoe, boot and skate holder includes a handle, a stem extending from the handle, and a locking mechanism operatively connected to the stem. An eyelet rod is releasably lockable in the locking mechanism. The eyelet rod is insertable through eyelets of a shoe, boot or skate, and is lockable in the locking mechanism to retain the shoe, boot or skate in the holder.

Abstract: A skate includes a shoe body and a skating device, wherein the sole of the shoe body comprises a front part, a middle bow part and a rear part. The skating device is mounted only under the middle bow part. Therefore, the toe of the front part and the heel of the rear part can respectively contact with the ground easily. When the toe of the front part contacts with the ground, the angle A between the plane of the sole and the ground is less than 45°. When the heel of the rear part contacts with the ground, the angle B between the plane of the sole and the ground is less than 45°.

Abstract: An apparatus supporting “dry land” simulation of the diagonal stride cross-country skiing technique. The apparatus may include a roller ski comprising at least two wheel configured to roll on a surface and a stop connected to the roller ski. The stop may selectively engaging at least one of the surface and the at least two wheels in response to a force of at least a threshold magnitude urging the roller ski toward the surface to resist rearward roll of the roller ski on the surface. The resistance to rearward roll may vary with the force.

Abstract: The present invention discloses a roller assembly of an in-line roller skate, the roller assembly comprising a roller frame and a plurality of roller wheels, of at least two different sizes, which are fastened pivotally with the roller frame, such that the roller assembly may rock forwards and backwards upon a surface.

Abstract: There is disclosed an in-line skate with an adjustable length. The in-line skate includes a heel support, a toe support, a positioning element, a pushing element, and a switch. The heel support includes two parallel transverse grooves near a flank, a cavity near an opposite flank, a longitudinal groove between the transverse grooves and the cavity, and a slot therein. The toe support includes a slide put movably in the longitudinal groove and a series of pockets in the slide. The positioning element includes a button put movably in the cavity and two latches put movably in the transverse grooves of the heel support for entering a selective pair of the pockets of the toe support, thus keeping the toe support in selective one of several positions relative to the heel support. The pushing element is put movably in the cavity for pushing the button and hence the latches. The pushing element defines a tunnel.

Abstract: The present invention refers to an in-line roller-skate, in particular a roller-skate for racing, comprising a footwear (102) and a chassis (104) supporting a train of wheels (108); the footwear (102) is provided on the bottom with a sole (103), which is in turn provided with at least a first and a second binding point (105, 111) for attachment to the chassis (104). The first binding point (105) is positioned in the heel-piece zone of the sole (103), whereas the second binding point (111) is positioned in proximity of the foot toe, approximately in the area in which the juncture of the toes lies. The train of wheels (108) comprises solely wheels (108) having a diameter of 100 mm, while the chassis (104) is adapted to accommodate in its interior fastening means (107) for joining the footwear (102) to the chassis (104).

Abstract: An in-line roller skate is disclosed to include a frame with a curved lower portion, which supports a point stop at the front end followed by a ball support, a string of rotating rollers and a tail ball support. The point stop is preferably another roller fixed in position. The in-line skate allows performing all the maneuvers as the regular ice skate without significant additional training and therefore can be used advantageously during off-season training by ice skaters as well as for a broad range of recreational activities.

Abstract: The present invention provides a suspension system for in-line skates. The in-line skate includes a boot and a tracking system attached to the sole of the boot. Opposing rocking arms that hold the wheels are connected to the tracking system using a truncated axle. In addition, an adjustable spring can be configured between the opposing rocker arms.

Abstract: A frame for an article of sports equipment, such as a frame for a skate, such as a roller skate, including a front upper portion provided to receive the front portion of a boot, and a rear upper portion provided to receive the rear portion of a boot. The front upper portion and the rear upper portion are part of the same planar upper surface. The frame further includes two cylindrical holes provided to receive two fixing elements, the holes extending in the longitudinal plane of the frame and their respective axes being spaced from one another by a value E of between about 164 mm and 170 mm, more particularly equal to about 167 mm. Moreover, a substantially cylindrical cavity centered on the axis of the cylindrical hole is provided in the upper surface. The invention is also directed to a line of boots for a roller skate and to a line of frames therefor.

Abstract: An in-line skate having at least a front roller, a rear roller and an intermediate roller carried by a beam. The beam is canted outwardly at the top so that the beam will flex outwardly and at an angle to downward/outward pressure exerted by the skater's foot, creating an arc and resulting in a turn. All of the rollers are mounted to the outer side of the beam. In a preferred embodiment, there are two intermediate rollers that are offset outwardly from the front and rear rollers so that when the skater leans into a turn the intermediate rollers of the outer skate move out of contact with the ground, allowing the beam to flex outwardly at an angle to the force applied to it producing the arc that results in a curved turn. The inner skate rides on the intermediate rollers only, for improved maneuverability.

Abstract: An adjustable frame assembly for skates to allow for attachment of the frame in a number of positions along the length of the boot portion of the skate. The assembly comprises a skate foot bed containing two recessed portions each containing an opening flanked by ribs corresponding to ribs on a T-nut allowing the T-nut to rest in a variety of positions in the recessed portion. The T-nut further comprises a threaded opening for coupling to a fastener which attaches the frame to the base of the boot portion of the skate.

Abstract: A flexing base skate (100) includes an upper shoe portion (12) mounted on a base (14). The base includes a forefoot region (20) secured to a forward frame segment (26) carrying forward wheels (18a, 18b). A heel region of the base is secured to a rearward frame segment (28) that carries rearward wheels (18c, 18d). A second embodiment (100) provides a rigid full length frame (112) and a base (104) mounted at the forefoot region (106) to the frame. The base flexes at a metatarsal portion (108), and forms an integral spring biasing the base against the frame. The base includes a guide (118) for lateral alignment of the heel region with the frame. Another embodiment (210) provides a forward frame segment (226) carrying forward wheels (218) and a rearward frame segment (228) carrying rearward wheel (218).

Abstract: A size-adjustable in-line skate having a base carrying a plurality of wheels thereon. An upper is secured to a top surface of the base and defines a heel portion, a toe portion, and diametrically opposed side wall portions. The upper is supported by a support structure that includes a heel cup and a toe cup. The toe cup is secured to the toe portion of the upper and slideably coupled to the base so that the toe cup can slide longitudinally with respect to the base. An actuator is coupled to the toe cup and travels therewith. When the actuator is translated, engagement members on the actuator disengage with detents on the base to allow the toe cup to freely slide between longitudinal positions to adjust the shoe size of the skate.

Abstract: An in-line skate includes a sole plate having wheels rotatably connected to the underside of the sole plate and two elongated first slots are longitudinally defined through the sole plate. A rear portion of vamp is connected to a connection wall on the sole plate. A toe part has two elongated second slots longitudinally defined therethrough and a front portion of vamp is connected to the toe part. The toe part is connected to a top of a front end of the sole plate. Two adjusting members extend through the second slots in the top part and the first slots in the sole plate and are cooperated with two quick-release levers located at the underside of the sole plate such that the toe part can be moved relative to the sole plate by operation of the adjusting members.

Abstract: An in-line skate includes a sole plate having wheels rotatably connected to the underside of the sole plate and two elongated first slots are longitudinally defined through the sole plate. A rear portion of vamp is connected to a connection wall on the sole plate. A toe part has two elongated second slots longitudinally defined therethrough and a front portion of vamp is connected to the toe part. The toe part is connected to a top of a front end of the sole plate. Two adjusting members extend through the second slots in the top part and the first slots in the sole plate and are cooperated with two quick-release levers located at the underside of the sole plate such that the toe part can be moved relative to the sole plate by operation of the adjusting members.

Abstract: A modular roller skating apparatus includes a frame having a pair of interchangeable frame portions. A plurality of wheel assemblies is axially mounted to the frame in an in-line configuration, each assembly having a pair of releasably coupled hub portions. When coupled, the hub defines a female receptacle for detachably coupling to a corresponding male structure of a tire such that worn tires may be conveniently replaced without replacing an entire wheel assembly. A boot having a lower portion for receiving a skater's foot is releasably mounted atop the frame and includes conventional lacing. An upper boot portion is provided for surrounding a skater's ankle. Laterally spaced eyelets along respective edges of upper and lower portions enable another lace to adjustably connect the boot portions and, more particularly, to provide enhanced support to a skater's ankle and leg.

Abstract: An in-line skate composed of an inner boot connected to an outer boot at a pivot point near the toe. Mounted between the inner and outer boots springs under the heel area, used to limit and dampen the shock and vibration transmitted to the skater. The inner and outer boots contain mating holes in the upper heel area, for the engagement of a locking pin. Freeing the boot sections decompresses the springs and allows them to function as shock absorbers. The locking pin has an enlarged end that is sized to move freely in the inner boot portion of the hole yet be retained by the smaller stop portion defined by the outer boot mating hole. The wheel frame has a section for the retention of the majority of the wheels, and a section for the retention of a pivoting wheel. The pivoting wheel frame contains internally lubricated ball bearings for ease of movement while pivoting.

Abstract: An in-line roller skate with adjustable dimension for adjusting the dimension of the shoe cap of the roller skate includes an adjusting mechanism which adopts a thread design. It has a first adjusting member located on the truck and a second adjusting member located on the bottom section of a two-piece shoe cap to couple with a turning knob at the rear end. By rotating the turning knob, the matching worms on the adjusting mechanism may be moved forwards or rearwards to drive the shoe cap to move forwards or rearwards. When rotation of the turning knob is stopped, the screw threads on the adjusting mechanism are latched to anchor the shoe cap, therefore the dimension of the roller skate may be adjusted.

Abstract: An backslide plate is designed for mating engagement in an opening in the outer side face of an in-line skate boot. The backslide plate has an arcuate outer slide guiding surface for contacting a sliding surface during sliding maneuvers. The plate is releasably secured in the boot opening by a releasable fastener device. In this way, the skater's foot will be in direct engagement with the backslide plate during maneuvers, providing improved control.

Abstract: An in-line skate having a sports shoe connected to a frame supporting a plurality of in-line wheels. The sports shoe has a sole, and an upper made of soft material, and rigid protection strips. The protections strips are arranged above the lateral edge of the sole: at the lateral metatarsus region of the foot of the user; at the lateral heel region of the user's foot; and at the anklebone region of the user's foot.

Abstract: A skate frame (20) for an in-line skate (18) having a shoe portion (22) and a plurality of longitudinally aligned wheels (24) capable of traversing a surface. The skate frame including an elongate carrier frame (70) having first and second sidewalls (52a and 52b) held in space parallel disposition by a first upper wall. The carrier frame having an open lower end spaced to receive the wheels therebetween. The skate frame also including an elongate outer shell (66) having first and second sidewalls and an open lower end. The sidewalls of the outer shell are spaced to receive the carrier frame therein, such that the sidewalls of the outer shell overlap at least a portion of the sidewalls of the carrier frame. A shear layer (68) is disposed between the carrier frame and the outer shell to absorb at least a portion of the vibrational energy transmitted from the surface to the shoe portion when the skate traverses the surface.

Abstract: A skate frame (20) for an in-line skate (18) having a shoe portion (22) and a plurality of wheels (24) capable of traversing a surface. The skate frame includes an elongate structural member comprised of a structural material having a first average density. The structural member having first and second sidewalls (62, 68). The structural member also includes a shoe mounting portion (50) spanning between at least a portion of the upper ends of the sidewalls. The skate frame also includes core material (64) disposed within at least one of the first and second sidewalls or within the shoe mounting portion. In an embodiment of the invention a threaded insert (602) is embedded in the core material of one sidewall, and an aligned tubular insert is installed in the opposite sidewall, such that the wheel axle (612) can be inserted through the tubular insert to engage the embedded threaded insert. In another embodiment, a protective cap (770) protects and/or enhances the appearance of the skate frame.

Abstract: A skate is disclosed comprising a skate boot including an outsole and an upper for enclosing and supporting a human foot. The outsole comprises a resilient component insert for reducing shocks and vibrations transferred from the skating surface to the human foot.

Abstract: Disclosed is a shoe with roller blade assembly. The shoe has a shoe body which has a cavity in an outsole thereof A housing is accommodated in the cavity of the shoe body. An underside of the housing is opened and assembling slots are horizontally formed in lower inner ends of both sidewalls of the housing. A roller assembly is movably accommodated in the housing. The roller assembly includes a frame and a plurality of rollers arranged in a lower end of the frame in an in-line pattern. A stopper is provided for restricting the roller assembly from being completely withdrawn from the housing. A locker is movably coupled to the assembling slots of the housing such that a part of the locker protrudes through a rear portion of the outsole of the shoe. The locker selectively makes contact with an upper end or a lower end of the roller assembly so as to support the roller assembly. A brake is mounted on a rear end of the outsole of the shoe.

Abstract: A skate structure, particularly a roller skate with in-line wheels, comprising a frame (10) for supporting the wheels (14), a rigid sole (16) for supporting a first shoe body (30), a rigid cradle (34) for lateral and rear support of said first shoe body (30), an oscillating collar (40) for supporting the user's leg, and a removable, soft second shoe body (50) inserted into the said first shoe body (30) and designed to hold the user's foot. The frame (10), the rigid sole (16) and the rigid support structure (34) constitute an integral structure made in a single piece. A rigid toe-piece (18) may also be part of the one-piece structure, or, alternatively, may be produced as a separate component to be attached to the first shoe body (30′) or to the one-piece structure before final assembly of the skate.

Abstract: A roller skating device combining advantages of conventional roller and in-line skates, and skateboards is presented. A “boot” (as defined herein) for snugly encasing a selected foot of a user has an undercarriage, i.e. a frame, connected to it in fixed relation. A rigid member having a planar top is affixed to the undercarriage, preferably behind the heel of the boot, for engaging the free foot of the user, i.e., the foot not wearing this invention. A plurality of rollers, connected to the undercarriage, rollingly support the undercarriage, and all connected to it, on a skatable surface. The free foot engages the planar top by resting on and, at selected times, pressing forcefully against the planar top to help control the device during operation. Two exemplary embodiments are described herein: an embodiment having a rectangular pattern of rollers and an embodiment having a single line of rollers.

Abstract: A first embodiment of a flexing base skate (100) includes an upper shoe portion (12) mounted on a base (14). The base includes a forefoot region (20) secured to a forward frame segment (26) carrying forward wheels (18a, 18b). A heel region of the base is secured to a rearward frame segment (28) that carries rearward wheels (18c, 18d). The base defines and flexes at a reduced thickness metatarsal head portion (22), with the skater's heel and the rearward frame segment elevating freely relative to the forward frame segment. A spring plate (72) incorporated into the base biases the skate to the unflexed configuration. The forward frame segment overlaps the rearward frame segment for lateral stability. An alternate embodiment (100) provides a rigid full length frame (112) and a flexible base (104) mounted only at the forefoot region (106) to the frame. The base flexes at a metatarsal head portion (108), and is constructed to form an integral spring biasing the base against the frame.

Abstract: A frame for a sports article, especially a frame for a roller skate, including a front upper portion provided to receive the front portion of a boot, and a rear upper portion provided to receive the rear portion of a boot. The front upper portion and the rear upper portion are part of the same planar upper surface. The frame further includes two cylindrical holes provided to receive two fixing elements, the holes extending in the longitudinal plane of the frame and their respective axes being spaced from one another by a value E of between about 164 mm and 170 mm, more particularly equal to about 167 mm. Moreover, a substantially cylindrical cavity centered on the axis of the cylindrical hole is provided in the upper surface. The invention is also directed to a line of boots for a roller skate and to a line of frames therefor.

Abstract: A skate frame (20) for an in-line skate (18) having a shoe portion (22) and a plurality of wheels (24) capable of traversing a surface. The skate frame includes an elongate structural member comprised of a structural material having a first average density. The structural member having first and second sidewalls (62 and 68), each having an upper end and a lower end. The structural member also includes a shoe mounting portion (50) spanning between at least a portion of the upper ends of the sidewalls. The first and second sidewalls having a wheel load introduction portion (58), wherein loads associated with the wheels are transferred to the structural member. The shoe mounting portion having a shoe load introduction portion, wherein loads associated with the shoe portion are transferred to the structural member.

Abstract: An in-line roller skate incorporating at least one counter-rotatable braking device and at least one raised braking wheel in the front of the skating wheels. The braking wheel has upward freedom of movement toward the braking device so that the braking wheel is in contact with the braking device when the skate is tilted forward onto the braking wheel. The counter-rotatable braking device resists rotation of the braking wheel in the backward skating direction to provide skid free braking effect against the skating surface in proportion to the weight applied to the braking wheel and allows free rotation of the braking wheel along the skating surface in the forward direction in the event the braking wheel unintentionally contacts the skating surface.

Abstract: A frame particularly usable for in-line or ice skates, comprising two mutually facing approximately vertical walls, transversely to which there are, along the same longitudinal axis, multiple holes for placing the hubs of respective wheels. The frame has, in a transverse cross-section, an oval shape which is closed in the interspace between at least two adjacent wheels.

Abstract: An in-line skating device of a roller skate has a base which is fastened to the sole of a boot of the roller skate is fastened pivotally with a wheel carrier. The wheel carrier is provided with a plurality of wheels pivoted thereto in sequence. The carrier is formed of at least two pairs of carrying plates. Two carrying plates of each pair are connected in a parallel manner and are pivoted in the longitudinal direction. The wheels are respectively pivoted between the two carrying plates. The pivoting point of two adjoining carrying plates is located on the axle of one of the wheels. When the base turns in relation to the carrier, the carrying plates of one pair displace in relation to the carrying plates of other pair, thereby enabling the wheels pivoted to the carrying plates of one of the pairs to remain in contact with the ground surface so as to enable the roller skate to be started swiftly at a fast pace.

Abstract: A skate body having a first body portion and a second body portion that are releasably secured together. A brake device includes a brake seat mounted to one of the first and second body portions and a brake block. The brake seat includes a resilient hook member and a rib formed on an inner wall thereof. The brake block includes an engaging groove releasably engaged with the rib of the brake seat and a retaining piece releasably engaged with the resilient hook member of the brake seat.