A clamp device for being secured to a bar includes an outer sleeve having an inner surface defining an annular recess and an inner sleeve received by the outer sleeve having a channel that extends between an inner and outer surface of the inner sleeve. A resilient ring and a rigid ring are disposed within the channel of the inner sleeve. The outer sleeve is axially movable relative to the inner sleeve between a first position and a second position. In the first position, the annular recess is axially aligned with the channel and the rigid member is disposed in the annular recess. In the second position, the annular recess is axially displaced from the channel such that the outer sleeve displaces the rigid member and the resilient ring axially away from the outer sleeve thereby compressing the clamp device to the bar received by the inner sleeve.

A quick releasing device includes a housing, a first detent structure, a second detent structure, a first elastic member and a second elastic member. The housing has a through hole and two openings located on two sides of the housing, respectively. The first detent structure includes a first engaging portion and a first abutting portion. The first abutting portion is connected to the first engaging portion. The second detent structure includes a second engaging portion and a second abutting portion. The second engaging portion forms an engaging space with the first engaging portion. The engaging space is corresponding to the through hole. The second abutting portion is connected to the second engaging portion. The first elastic member is telescopically connected between the first engaging portion and the second abutting portion. The second elastic member is telescopically connected between the second engaging portion and the first abutting portion.

A weight plate may be provided with an inner face configured for mounting on the outer surface of a bar and a securing mechanism arranged adjacent the inner face for selectively securing and unsecuring the weight plate relative to the bar. The securing mechanism may be capable of being locked in a secured condition with the weight plate secured to the bar and capable of being locked in an unsecured condition with the weight plate unsecured from the bar. A control apparatus for the securing mechanism may be operable to switch the securing mechanism between the secured and unsecured conditions, and may include a trigger operable, with the securing mechanism in the unsecured condition, to switch the securing mechanism to be locked in the secured condition, and a handle operable, with the securing mechanism in the secured condition to switch the securing mechanism to be locked in the unsecured condition.

A dumbbell and barbell supporting system includes two tables movable toward and away from each other and each having a plate, a casing and a bracket disposed on each of the plates and the bracket being movable and rotatable relative to the casing, two dumbbells disposed on the tables and each including two weight members and two weight elements disposed on the bracket and the casing, and two handlebars engageable with the weight members and the weight elements, the weigh members are movable toward each other, and the weight elements also movable toward each other, and a longitudinal bar is engageable with the weight members and the weight elements for acting as a barbell device.

A barbell includes a rotational body including a bar, a sleeve assembly having a sleeve with a bore, where a portion of the bar is received through the axial bore, a proximal bushing received in the bore and having a passage receiving the bar, a distal bushing received in the bore and having a cavity receiving a portion of the body. The proximal bushing has a first outer surface engaging the sleeve and a first inner surface engaging the bar within the passage. The distal bushing has a second outer surface engaging the sleeve and a second inner surface engaging the portion of the body within the cavity. The proximal bushing and the distal bushing permit the sleeve assembly to rotate around the body, and at least one of the first inner and outer surfaces and at least one of the second inner and outer surfaces are polymer surfaces.

A clamp for exercise equipment. The clamp includes a body. The body is configured to receive a portion of a piece of exercise equipment. The body includes a first portion, a second portion and a hinge connecting the first portion and the second portion. The clamp also includes a neck. The neck is cylindrical in shape. The neck includes a first portion attached to the first portion of the body and a second portion attached to the second portion of the body. The clamp further includes a securing mechanism, the securing mechanism configured to secure the first portion of the neck to the second portion of the neck. The neck is configured to secure to an external handle when secured by the securing mechanism.

A sporting weight system couplable to a sporting device. The sporting weight system including a plurality of shaped weight portions and at least one fastener. The at least one fastener is configured to couple the plurality of shaped weight portions together about a shaft portion of the sporting device.

The present application relates to the field of sports equipment, in particular to a weight-adjustable dumbbell and a dumbbell assembly. The weight-adjustable dumbbell comprises a dumbbell grip bar assembly and dumbbell plate groups connected to two ends of the dumbbell grip bar assembly; each dumbbell plate group comprises at least two dumbbell plates; the dumbbell grip bar assembly comprises a rotary plate selecting mechanism used for loosening or selecting at least one dumbbell plate. The present application has the effect of conveniently adjusting the weight of the dumbbell.

An adjustable kettlebell device comprising a solid right circular frustum as a base, a post, a sleeve, one or more weight plates, one or more quick release clamps, and a removable handle. The post has an outer diameter compatible with standard weights, and a sleeve that slides over the post has an outer diameter compatible with Olympic weights. The handle is configured to facilitate an addition/removal of the weight plates, and may be swapped with different sized handles for use with different sized hands.

A clamping device for securely engaging one or more objects through an application of pressure. The clamping device includes a primary member having opposed interior and exterior surfaces. The primary member has a generally cylindrical shape such that the interior surface defines a generally circular space about a center point of the primary member. The clamping device can receive an elongated member through the generally circular space circumscribed by the primary member. The primary member is adapted for clamping and releasing such that the clamping device may releasably engage the elongated member. The elongated member is securely retained by the clamping device through the application of pressure.