Abstract: A helmet for ball sports has a main body and two strengthening elements. The two strengthening elements are mounted on two inner walls of the main body. A first surface of each strengthening element abuts and is connected to the main body. Second surfaces of the strengthening elements face to each other. Through holes of each strengthening element are formed through the first surface and the second surface so that the strengthening elements are latticed. With the helmet mounted with the strengthening elements on two sides, the strengthening elements enhance an anti-impact capacity on the two sides of the helmet. Besides, with the latticed strengthening elements, the weights of the strengthening elements are lightened and do not cause weighted burden on the neck of the user.

Abstract: An adjustable headband device for a helmet has a base, a headband, a driven wheel, a resilient element, a cover plate and an adjusting knob. The headband is mounted on the base and has two toothed racks. The driven wheel has a gear engaging the toothed racks, multiple engaging tabs and multiple ratchet pawls. The cover plate is mounted on the base and has multiple ratchet teeth selectively engaging the ratchet pawls. The adjusting knob of the adjustable headband device rotates to control increase and decrease of an inner diameter defined by the looped headband without being depressed.

Abstract: An adjustable headband device for a helmet has a base, a headband, a driven wheel, a resilient element, a cover plate and an adjusting knob. The headband is mounted on the base and has two toothed racks. The driven wheel has a gear engaging the toothed racks, multiple engaging tabs and multiple ratchet pawls. The cover plate is mounted on the base and has multiple ratchet teeth selectively engaging the ratchet pawls. The adjusting knob of the adjustable headband device rotates to control increase and decrease of an inner diameter defined by the looped headband without being depressed.

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: An adjustable head band for a helmet has a base, a band, an adjusting wheel, a dial and a cover. The base has at least one pawl. The band is annular and is movably mounted through the base and has two toothed ends. The toothed ends correspond to each other. The adjusting wheel has a gear and a ratchet wheel. The gear engages the toothed ends of the band. The ratchet wheel engages the at least one pawl of the base. The dial is mounted on the adjusting wheel. The cover is mounted on the base. The adjustable head band is attached to a helmet and is convenient and easy to operate to allow customization of the helmet on a head.

Abstract: A catcher's leg guard includes an upper knee cover, a lower knee cover and a shin cover. The upper knee cover has a kneepad attached securely to an inner surface of the upper knee cover. The lower knee cover is connected rotatably to the upper knee cover. The shin cover is mounted below the lower knee cover and has an inner surface and a shin pad. The shin pad is attached securely to the inner surface of the shin cover. When a catcher is in a standing position, the upper knee cover retracts relative to the lower knee cover. When the catcher is in a squatting position, the upper knee cover and the lower knee cover are open to fully cover a knee of the catcher. Therefore, the leg guard can be securely and comfortably worn on the catcher's leg.

Abstract: An adjustable head band for a helmet has a base, a band, an adjusting wheel, a dial and a cover. The base has at least one pawl. The band is annular and is movably mounted through the base and has two toothed ends. The toothed ends correspond to each other. The adjusting wheel has a gear and a ratchet wheel. The gear engages the toothed ends of the band. The ratchet wheel engages the at least one pawl of the base. The dial is mounted on the adjusting wheel. The cover is mounted on the base. The adjustable head band is attached to a helmet and is convenient and easy to operate to allow customization of the helmet a head.

Abstract: A skate includes a holder frame, a boot, and a locking mechanism. The boot comprises a toe box and a heel portion, wherein the toe box is fixedly attached to the holder frame and wherein the heel portion engages the holder frame such that the heel portion is capable of moving relative to the toe box for adjusting the size of the boot. The skate also comprises a locking mechanism that is operable to selectively position and retain the heel portion in more than one position with respect to the toe box by engagement with the holder frame, wherein the locking mechanism is activatable through a push button.

Abstract: A skateboard comprising an articulated structure having a foot platform, at least one forward and one rearward ground engaging wheel. The articulated structure is foldable between a skating position and a folded position. With the skateboard in the skating position, the axis of the forward wheel, the axis of the rearward wheel and the foot platform lie substantially within the same plane.

Abstract: A skate comprises a chassis with a variable length boot disposed thereon. The variable length boot includes a heel portion fixedly disposed upon the chassis and a toe box slidably disposed upon the chassis. The toe box is slidable in relation to the heel along the longitudinal axis of the skate to increase or decrease the size of the boot. A locking mechanism attached to the toe box locks the toe box to the chassis at a selected position. The selected position is chosen from a plurality of spaced-apart slots disposed within the chassis. The locking mechanism includes a positionable clasp insertable into a selected slot to lock the toe box to the chassis at the selected position.

Abstract: A skate comprises a chassis with a variable length boot disposed thereon. The variable length boot includes a toe portion fixedly disposed upon the chassis and a heel portion slidably disposed upon the chassis. The heel portion is slidable in relation to the toe portion along the longitudinal axis of the skate to increase or decrease the size of the boot. A locking mechanism attached to the heel portion locks the heel portion to the chassis at a selected position. The selected position is chosen from a plurality of spaced-apart slots disposed within the chassis. The locking mechanism includes a positionable clasp insertable into a selected slot to lock the heel portion to the chassis at the selected position.

Abstract: The present invention regards a skate comprising a holder frame, a boot, and a locking mechanism. The boot comprises a toe box and a heel portion, wherein the toe box is fixedly attached to the holder frame and wherein the heel portion engages the holder frame such that the heel portion is capable of moving relative to the toe box for adjusting the size of the boot. The skate also comprises a locking mechanism that is operable to selectively position and retain the heel portion in more than one position with respect to the toe box by engagement with the holder frame, wherein the locking mechanism is activatable through a push button.

Abstract: An ice skate comprising a boot modifiable in length disposed on a blade holder frame, and a locking mechanism. The blade holder frame includes a recessed surface disposed on a forward section of the blade holder frame longitudinally along a longitudinal axis of the skate. The boot includes a heel portion disposed on the blade holder frame and a toe box portion slidable on the blade holder frame. The toe box portion includes a first slot disposed longitudinally along the longitudinal axis of the skate, a perimeter wall extending downward from the first slot, and downwardly extending channel walls. The perimeter wall seats within the recessed forward surface of the blade holder frame to securably guide the toe box rearwardly or forwardly. The locking mechanism includes first and second detents disposed on the downwardly extending channel walls engaging a plurality of indentations disposed on the forward section of the blade holder frame.

Abstract: A skateboard comprising an articulated structure having a foot platform, at least one forward and one rearward ground engaging wheel. The articulated structure is foldable between a skating position and a folded position. With the skateboard in the skating position, the axis of the forward wheel, the axis of the rearward wheel and the foot platform lie substantially within the same plane.

Abstract: A skate of the present invention comprises a chassis with a variable length boot disposed thereon. The variable length boot includes a toe portion fixedly disposed upon the chassis and a heel portion slidably disposed upon the chassis. The heel portion is slidable in relation to the toe portion along the longitudinal axis of the skate to increase or decrease the size of the boot. A locking mechanism attached to the heel portion locks the heel portion to the chassis at a selected position. The selected position is chosen from a plurality of spaced-apart slots disposed within the chassis. The locking mechanism includes a positionable clasp insertable into a selected slot to lock the heel portion to the chassis at the selected position.

Abstract: A skate of the present invention comprises a chassis with a variable length boot disposed thereon. The variable length boot includes a heel portion fixedly disposed upon the chassis and a toe box slidably disposed upon the chassis. The toe box is slidable in relation to the heel along the longitudinal axis of the skate to increase or decrease the size of the boot. A locking mechanism attached to the toe box locks the toe box to the chassis at a selected position. The selected position is chosen from a plurality of spaced-apart slots disposed within the chassis. The locking mechanism includes a positionable clasp insertable into a selected slot to lock the toe box to the chassis at the selected position.

Abstract: An ice skate comprising a boot modifiable in length disposed on a blade holder frame, and a locking mechanism. The blade holder frame includes a recessed surface disposed on a forward section of the blade holder frame longitudinally along a longitudinal axis of the skate. The boot includes a heel portion disposed on the blade holder frame and a toe box portion slidable on the blade holder frame. The toe box portion includes a first slot disposed longitudinally along the longitudinal axis of the skate, a perimeter wall extending downward from the first slot, and downwardly extending channel walls. The perimeter wall seats within the recessed forward surface of the blade holder frame to securably guide the toe box rearwardly or forwardly. The locking mechanism includes first and second detents disposed on the downwardly extending channel walls engaging a plurality of indentations disposed on the forward section of the blade holder frame.

Abstract: A skate includes a boot that includes a heel portion and a toe box portion. The heel portion is disposed on a wheel holder frame that holds a plurality of ground-engaging wheels. The toe box portion is disposed slidably on the wheel holder frame and is slidable in relation to the heel portion. The heel portion includes left and right forwardly extending vamp sections that extend into the toe box portion. The toe box portion includes an inside surface that extends from a forward tip transversely and rearwardly toward the heel portion in a curved fashion. The vamp sections engage the inside surface of the toe box portion such that the vamp sections are flexed inwardly or outwardly as the toe box is slid on the wheel holder frame thereby varying the width and the length of the boot.