Abstract: A wheel assembly for a roller skate includes a pivotal seat having a first end secured to a base of the roller skate, a wheel seat having a first end pivotally connected to a second end of the pivotal seat by a pin, and a wheel rotatably mounted to a second end of the wheel seat. A first elastic member has a first end attached to the pivotal seat and a second end attached to a mounting member on the wheel seat for biasing the wheel seat to a storage position in the base. A stopping member includes a first end mounted to the pin and a second end through which the mounting member is extended. A second elastic member is mounted around the pin for biasing a stop of the stopping member to a position for releasably engaging with the wheel seat to prevent the wheel seat from moving into the storage position in the base when the wheel seat and the wheel are extended beyond the base for 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: A roller skate has a base, a plurality of tandem frames, a like plurality of axles, and a like plurality of wheels. Each frame is affixed to the base and has bilateral, spaced apart, opposing side walls that define a wheel well. Adjacent side walls of the frames are interconnected to form unitary opposing structures. The side walls of one of the frames is angularly related to the side walls of at least one of the other frames. Each axle is carried in a wheel well by the side walls of one of the frames. Each wheel is disposed within one of the wheel wells and mounted for rotation on the axle in the wheel well. The wheel wells are either equally or unequally spaced. The roller skate may further include an article of footwear, such as a shoe or a boot, to which the base is either affixed or integral. Additionally, at least one brace may interconnect the opposing walls of at least one frame.

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: A roller skate has a base, a plurality of tandem frames, a like plurality of axles, and a like plurality of wheels. Each frame is affixed to the base and has bilateral, spaced apart, opposing side walls that define a wheel well. Adjacent side walls of the frames are interconnected to form unitary opposing structures. The side walls of one of the frames is angularly related to the side walls of at least one of the other frames. Each axle is carried in a wheel well by the side walls of one of the frames. Each wheel is disposed within one of the wheel wells and mounted for rotation on the axle in the wheel well. The wheel wells are either equally or unequally spaced. The roller skate may further include an article of footwear, such as a shoe or a boot, to which the base is either affixed or integral. Additionally, at least one brace may interconnect the opposing walls of at least one frame.

Abstract: A dual-purpose includes an outsole having increased thickness for forming two open-bottomed cavities. In each of the cavities, there is mounted a wheel assembly that includes a fixing bracket screwed to a top of the cavity, a wheel holder movably mounted in the fixing bracket, a wheel rotatably supported on the wheel holder, and a pair of control plates fixed at two sides of the fixing bracket to connect at an end to the wheel holder. The control plates of each of the wheel assemblies mounted in the cavity are connected to an external knob. Turning the knob clockwise or counterclockwise causes the control plates to pivotally turn and thereby bring the wheel holder to move upward or downward in the fixing bracket. When all the wheel holders are moved upward, the wheels retract into the cavities and the shoe functions like an ordinary shoe, and when the wheel holders are moved downward, the wheels expose from the cavities and the shoe functions like a roller skate.

Abstract: A structure for supporting a wheel of a roller skate which enables a wheel coupled to an outsole of a roller skate to be supported and retracted simply and reliably is disclosed. The structure includes a frame attached to an outsole of the roller skate, which has at its bottom wall recesses and protrusions; a swing plate pivotally coupled to the frame, which has a central hole; and a bracket for rotatably supporting a wheel, which has a throughhole and a top portion to be releasably fitted in the pair of fitting recesses of the frame, and which is rotatably coupled to the swing plate by a bolt threaded in the hole of the swing plate through the throughhole of the bracket. The bracket has a pair of arms extending downward which rotatably support the wheel therebetween, and a protrusion formed at the top portion thereof which is releasably fitted in the fitting recesses of the frame. The throughhole of the bracket is formed with a concentric counterbored portion receiving a coil spring therein.

Abstract: A roller skate has a sole plate having a front oblong hole, a rear oblong hole, and a middle block. The sole plate has a round aperture, a threaded hole, and a circular aperture. The middle block has a round hole and a through hole. The hollow bottom casing has a front slot, a rear slot, and a bore. The first wheel support seat has a first U-shaped frame, and a first insertion plate having a first circular hole. The second wheel support seat has a second U-shaped frame, and a second insertion plate having a second circular hole. The through hole, of the middle block receives the first insertion plate and the second insertion plate. The first shaft is inserted through the round aperture and the first circular hole. The second shaft is inserted through the circular aperture and the second circular hole. The positioning tube engages with the threaded hole. The blocking device is inserted through the round hole.

Abstract: A skate with shoe feature comprises two springs, two pairs of wheels each having a bore, two axles each having a length conformed to the distance between the pair of wheels, an axially groove, and an elongate pivot member hinged to the axially groove at one end, and a shoe body having two transverse tubes in the front and rear of the sole, and at least two curved fastening members on two sides in the axial direction of the pair of wheels. Whereby the compressed spring sleeved on the axle, one wheel sleeved on the axle, the axle through the bore, and the other wheel sleeved on the axle are secured together by pulling pivot member upwardly to make it perpendicular to axle.

Abstract: A convertible shoe that can be used for walking or for in-line skating having an extendable and retractable wheel mechanism. The convertible shoe has cavities in the sole of the shoe capable of storing and enclosing the retracted wheel mechanism. The wheel mechanism allows the wheels to be held perpendicular to the walking surface of the sole when the wheel mechanism is extended, and parallel to the walking surface of the sole when the wheel mechanism is retracted. With the wheel mechanism extended, the convertible shoe can be used for in-line skating. With the wheel mechanism retracted and stored in the sole, the convertible shoe can be used for walking.

Abstract: A frame for skates and the like with a structure comprising at least one bearing surface (3, 4) engageable by a boot or the like, and a side flange (2) comprising means for attaching one or more ground-engaging members. The components (3, 4-2, 8) of the structure are made of at least two at least partially mutually assembled materials having different mechanical properties.

Abstract: A dual-purpose roller skate comprises a boot, a sole plate provided with a plurality of receiving compartments, and a plurality of wheel sets equal in number to the receiving compartments. The wheel sets are pivoted to the receiving compartments of the sole plate such that the wheels of the wheel sets can be extracted from or retracted into the receiving compartments of the sole plate by an adjustment device.

Abstract: A suspension assembly for a skateboard is disclosed having a base plate with a truck plate pivotally attached at one end. A shock absorber is located between the base plate and the truck plate. A projection on the base plate protects the shock absorber and aids the rider in performing tricks. In use, a wheel truck is attached to the truck plate opposite the shock absorber. The suspension assembly provides a suspension for a skateboard which helps to protect the rider from bumps, while retaining good steering control. In another embodiment of the invention, the suspension assembly includes a base plate with a projection at each end. Each projection has a groove and a top out stop. A truck plate is biased away from the base plate by a shock absorber, with the ends of the truck plate sliding in the grooves. Also part of the invention is a skateboard incorporating a pair of suspension assemblies.

Abstract: An adjustable in-line skate structure includes a frame and a boot including a toe section, a heel section and a cuff section. Adjustable means are provided for adjusting the toe portion with respect to the heel section and the cuff section. The adjustable means includes cooperating transverse teeth portions belonging to the toe section and the heel section, an insertion cavity and an insertion block, and an adjustment fastener assembly. The adjustment fastener assembly is provided for urging the insertion block to move upward along walls of the insertion cavity so as to loosen the transverse teeth portion of the toe section from the transverse teeth of the heel portion. A latch assembly is also provided to permit adjustment at a connection point of the toe section, heel section and cuff section.

Abstract: A roller skate includes a chassis having a first frame and a second frame extending longitudinally parallel to each other, first through fourth wheels rotatably mounted in spaced apart manner between the first and second frames, and first through fourth slots provided in spaced apart manner in each frame. The first slot is positioned adjacent a front end of the frame and the fourth slot is positioned adjacent a rear end of the frame. The first through fourth wheels are mounted adjacent the first through fourth slots, respectively, of both frames. The center of the fourth slot is positioned at a vertical level higher than the center of the first slot.

Abstract: A two-wheeled roller skate with canted wheels has an axle for the forward wheel located well forward of the ball of the foot. The axle for the rear wheel is located at the rear of the skater's heel. The wheels are canted so that the front and rear wheels contact the ground on the opposite sides of the center line of the skater's foot. In plan projection, the axles are preferably non-parallel in order to provide steering correction. The amount of steering correction desirable will depend on the skater's skill and the nature of the skating activity. In alternative embodiments, the present invention incorporates novel braking mechanisms.

Abstract: An in-line skate with a main skate frame, a skate boot coupled to the skate frame, a carriage frame pivotally coupled adjacent to an anterior end of the main skate frame, a plurality of wheels rotatably coupled to the carriage frame to form a pivoting wheel group, and at least one wheel rotatably coupled adjacent to the posterior end of the main skate frame to form a fixed wheel group. A pivot axis of the carriage frame can be horizontally located anterior to a reference point that is three-tenths of the length of the open inner volume of the skate boot from the anterior end of the open inner volume, and the pivot axis could be aligned with or anterior to the anterior end of the skate boot. The pivot axis can be vertically located immediately adjacent to the sole of the skate boot, or it can be coincident with or distal to the sole of the skate boot relative to the wheels of the in-line skate.

Abstract: A skateboard comprising a rigid elongated board having front and rear portions, and front and rear wheel trucks mounted to the underside of the board. The wheel trucks each have multiple wheels mounted in-line. A steering platform is at the front of the board for use by the rider to steer the board. The steering platform is rotatable and is connected by a linkage system to the wheel trucks wherein, by rotating the steering platform, each wheel within their respective truck is equally angularly displaced to effect a turning movement of the board.

Abstract: An adjustment device, particularly for adjusting the size of an in-line roller skate composed of a frame provided with means for connection to the wheels and to the heel unit of a shell to which a cuff is articulated. A toe unit for containing an innerboot is slidingly associated with the frame, can be positioned selectively, and can be actuated directly by the user.

Abstract: An article of footwear is designed for use as a walking shoe and a roller skate and is composed of a main body, a sole disposed in the bottom of the main body and provided with a plurality of cells, a plurality of wheel sets disposed in the cells and formed of a wheel seat, two swivel arms, a wheel, an adjustment member, and a locating member. The wheel seat is fastened with the top of the corresponding cell. The two swivel arms are fastened pivotally with two sides of the wheel seat by a pivot. The wheel is pivoted between the two swivel arms by an axle. The adjustment member is connected with one swivel arm. The locating member is connected with other swivel arm for locating the swivel arm at a predetermined angular position. The wheel is thus located at its extraction position by the locating member.

Abstract: A wheel frame for use with in-line roller skates, and in particular, in-line roller skates with eccentrically mounted, single pivot wheel frames. The eccentrically mounted frame is configured such that the moment arm of the front wheel about the pivot point of the frame is greater than the moment arm of the rear wheel about the pivot point.

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.

Abstract: A suspension system for use with inline skates. The suspension system employs a mounting bracket that supports a flex beam on a left side and a flex beam on a right side of the mounting bracket. Downwardly extending tabs formed at the ends of the flex beams are each connected to an axle on which one of a plurality of wheels is supported. In a preferred embodiment, four inline wheels are connected to the flex beams, such that the first and third wheels are attached to one flex beam and the second and fourth wheels are attached to the other flex beam. This configuration allows the end of each flex beam and the wheel mounted thereon to deflect vertically as well as laterally and about a longitudinal axis of the flex beam. An independent suspension system is thus provided for each wheel. The ends of the flex beams are tapered (in thickness) to control the resiliency of the flex beams.

Abstract: An in-line skate frame that has a main body with a transverse base equipped with at least one support surface at the toe of the boot, one support surface at the heel of the boot, two projecting lateral portions that extend the transverse base downward, and two flange portions which are adapted to receive a series of wheels. The flange portions are independent attached elements connected to the projecting lateral portions of the main body. The two projecting lateral portions each have at least one fitting formed by a groove serving as the housing of at least one zone of each flange portion, each groove being bordered by an outer wall of the projecting lateral portion and by a bracing portion common to both grooves, laterally spaced apart from one another. A frame of this type has improved properties of strength and flexural and torsional rigidity, while being simple and economical to assemble.

Abstract: An assembly for wheels which are mountable on objects, such as in-line skates and wheel chairs, which have a frame for receiving the wheel.