Provided is a weight-adjustable dumbbell, including a grip bar assembly, a dumbbell seat, a plurality of dumbbell discs placed on the dumbbell seat; the grip bar assembly includes a plurality of hanging discs arranged adjacent to each other and are rotated synchronously, and the hanging discs are rotated relative to the dumbbell discs to setting positions to engage with or disengage from the dumbbell discs. The grip bar assembly also includes at least one stopping mechanism, each stopping mechanism includes at least one locking component, and the dumbbell seat is provided with a limiting hole for the locking component to be engaged with. When the hanging discs are rotated to a setting position, the locking component is disengaged from the limiting hole to maintain an unlocked state. When the hanging discs are rotated between two setting positions, the locking component is inserted into the limiting hole to maintain a locked state.

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.

An adjustable kettlebell system includes a base having a rod extending from the base. A selector is threaded onto the rod. The rod and selector extend through a plurality of weight supports. Each weight support is connected to an underlying weight support with a connector. As the selector is moved along the length of the rod by rotating the rod, the selector causes the connector to disengage with the underlying weight support. The adjustable kettlebell is then removed without the underlying weight support connected to the handle.

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.

The presently claimed invention contemplates a weight rack system comprising a weight rack having a flexible, resilient weight platform configured to receive a weight, a first side wall configured to elevate the weight platform above a surface, a second side wall configured to elevate the weight platform above a surface. The weight platform includes a bump that helps guide a weight being placed onto the platform.

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.

Presented is an exercising apparatus capable of capable of being used by a user for performing a variety of physical exercises. The exercising apparatus includes a handle, a mounting assembly, a clamp assembly and an arm extension assembly. The arm extension assembly includes multiple telescopically nestable arms. At least one telescopically nestable arm includes a weight attachment portion such that a user can lift weight attached to the weight attachment portion of the arm extension assembly by moving the handle. The mounting assembly is configured to allow rotation of the arm extension assembly in at least one direction. The exercising apparatus is collapsible and could be easily assembled and disassembled and installed at multiple locations depending on the user's requirements.