A weight system may include a concentric weight plate, a weight body, a locking mechanism, and a handle. The weight body may define a cavity. The locking mechanism may be disposed within the cavity. The locking mechanism may be configured to selectively attach the concentric weight plate to the weight body. The handle may be coupled to the weight body and configured to permit a user to move the weight system as a single unit.

A weight system may include a concentric weight plate, a weight body, a locking mechanism, and a handle. The weight body may define a cavity. The locking mechanism may be disposed within the cavity. The locking mechanism may be configured to selectively attach the concentric weight plate to the weight body. The handle may be coupled to the weight body and configured to permit a user to move the weight system as a single unit.

Exercise devices useful for weightlifting exercises and training are provided. More specifically, a weightlifting exercise device and system is provided for improving the grip and support of a weightlifting bar or barbell when in use. The present exercise device provides the user with a better grip on the weightlifting bar, while enabling the user to change hand positions along the weightlifting bar to vary the exercise routine or accommodate the physical requirements of the user. The weightlifting exercise device is designed to fit easily around the circumference of weightlifting bar or barbell. The present exercise device is also portable and easy to store.

Exercise devices useful for weightlifting exercises and training are provided. More specifically, a weightlifting exercise device and system is provided for improving the grip and support of a weightlifting bar or barbell when in use. The present exercise device provides the user with a better grip on the weightlifting bar, while enabling the user to change hand positions along the weightlifting bar to vary the exercise routine or accommodate the physical requirements of the user. The weightlifting exercise device is designed to fit easily around the circumference of weightlifting bar or barbell. The present exercise device is also portable and easy to store.

An adjustable dumbbell includes weight plates that are selectively connectable to a handle. Unselected weight plates are secured to a cradle. To secure the unselected weight plates to the cradle, a latch in the cradle is inserted into an engagement surface notch in the weight plate. The unselected weight plates are individually actuated based on which weight plates are selected and connected to the handle.

The present invention describes an electromechanical exercise machine that simulates the inertia and weight of a mass in Earth's gravity field and allows a user to move said simulated mass in the primary degrees of freedom of a traditional barbell free-weight system, with or without the use of various accessories.

The present invention relates to a fast-load weight plate system, wherein a weight plate, a linkage assembly and a stop block are provided. The weight plate is provided with a radially arranged straight slot that runs from the middle of the weight plate to its outer edge, The stop block is attached to the weight plate and blocks the straight slot; one end of the linkage assembly is movably connected to the handle of the weight plate and the other end is rotatably connected to the stop block. The linkage assembly is used to rotate the stop block to unblock the straight slot; such arrangement promises an easy loading and unloading process that takes up less space.

A dumbbell apparatus which is adapted with a series of weight plates, the number of which can be safely and reliably adjusted with a single simple motion. The apparatus comprises a cradle for storing and deploying the apparatus, weight plates, and a handle apparatus which has two spline bolts which support the weight plates and are used to simultaneously be adjusted by means of an adjusting pin which moves the spline members together through a motion transmitting gear. The apparatus may be further enhance with permanent weights and gripping options.

A dumbbell may include a handle, a first weighted portion and a second weighted portion, wherein the first weighted portion has a first cap and a first receiving space to receive one or more weighted units therein, and the second weighted portion has a second cap and a second receiving space to receive one or more weighted units therein. In one embodiment, the handle has a first threaded portion and a second threaded portion located at two opposite ends of the handle, and the first threaded portion is configured to threadedly engage with a first cap to secure the weighted units in the first receiving space, while the second threaded portion is configured is configured to threadedly engage with the second cap to secure the weighted units in the second receiving space.

A weight attachment device for attaching dumbbells to a weightlifting belt includes a pair of clamping units, each of which is mountable to respective opposed side of a weightlifting belt so that the clamping units are positioned singly proximate to hips of a user upon donning of the weightlifting belt by the user. Each clamping unit is selectively engageable to a respective dumbbell of a pair of dumbbells so that the respective dumbbell is removably engaged to the clamping unit. The pair of clamping units engages a pair of dumbbells so that the dumbbells are positioned singly proximate to the hips of the user. The user thus is positioned to perform exercises without using their hands to grasp the dumbbells.