Adjustable Dumbbell

Abstract

Improvements in an adjustable dumbbell to adjust the weight by insertion and removal of weights to one or both sides of the dumbbell. The weights are loaded into a carousel around the outside of the dumbbell handgrip. The weights can be place in opposing axial arrangement or can be placed in an uneven loading. A locking mechanism allows for a single rotation of the locking mechanism to secure and unlock all weights with a single rotation. The locking mechanism prevents the weights from falling or dislodging from the dumbbell axle when the dumbbell is being used. A rotating central axil allows for the heavy side of the dumbbell to rotate to a lower position. The rotating axil creates an eccentric weight placement for dynamic inertia exercises where a user can rotate or spin the eccentric weight around the handle of the dumbbell.

1 . An adjustable dumbbell comprising:
 a handle with carousals on each side of said handle;   each carousal having a plurality of recesses for temporally retaining a removable weight in each of said plurality of recesses, and   wherein said carousal retains said removable weights in a radial arrangement with a locking mechanism, and   said locking mechanism controls a plurality of plunger cogs that are configured to engage and disengage into at least a portion of each of said removable weights.   
     
     
         2 . The adjustable dumbbell according to  claim 1 , wherein said locking mechanism includes separate slots for each of said plurality of recesses. 
     
     
         3 . The adjustable dumbbell according to  claim 2 , wherein said locking mechanism is a button having at least a major outside diameter and a minor outside diameter. 
     
     
         4 . The adjustable dumbbell according to  claim 3 , wherein each said plunger cog has a tracking feature that follows said major outside diameter and said minor outside diameter to extend and retrack each said plunger cog. 
     
     
         5 . The adjustable dumbbell according to  claim 4 , wherein each said plunger cog includes a spring that biases each said plunger cog. 
     
     
         6 . The adjustable dumbbell according to  claim 3 , wherein said button is biases in an extended position whereby said plurality of plunger cogs are biased to be engaged into said at least a portion of each of said removable weights. 
     
     
         7 . The adjustable dumbbell according to  claim 2 , wherein each of said plurality of plunger cogs is controlled by a knob that moves each of said plurality of plunger cogs within a curved slot. 
     
     
         8 . The adjustable dumbbell according to  claim 7 , wherein said rotation of said locking knob moves each of said plurality of plunger cogs radially outward or radially inward. 
     
     
         9 . The adjustable dumbbell according to  claim 8 , further includes a spring that is configured to provides tension to said locking knob to retain said weights. 
     
     
         10 . The adjustable dumbbell according to  claim 1 , wherein said removable weights have a first rounded end and a second flattened end that is configured to prevent improper insertion of said removable weight into said recesses. 
     
     
         11 . The adjustable dumbbell according to  claim 10 , wherein said locking knob is configured to be recessed below said second flattened end when said removable weight is inserted into said adjustable dumbbell. 
     
     
         12 . The adjustable dumbbell according to  claim 11 , wherein said plurality of recesses are rounded pockets that are configured to conform around said first rounded end of said removable weight. 
     
     
         13 . The adjustable dumbbell according to  claim 12 , wherein said first rounded end has a recess that is configured to mate onto a boss in each od said plurality of recesses. 
     
     
         14 . The adjustable dumbbell according to  claim 1 , wherein each said removable weight has a recess that extends around a circumference of said removable weight. 
     
     
         15 . The adjustable dumbbell according to  claim 1 , wherein said handle is connected to each carousal with a bearing whereby said carousal is configured to rotate independent from said handle. 
     
     
         16 . The adjustable dumbbell according to  claim 15 , further includes a locking mechanism on each carousal that prevents rotation of at least one of said carousals. 
     
     
         17 . The adjustable dumbbell according to  claim 1 , wherein said locking mechanism is configured to collectively lock or unlock said removable weights. 
     
     
         18 . The adjustable dumbbell according to  claim 1 , wherein carousal is configured to retain a radially imbalanced eccentric amount of said removable weights in a radial arrangement whereby said radially imbalanced eccentric amount of said removable weights rotates said carousals on said handle. 
     
     
         19 . The adjustable dumbbell according to  claim 18 , wherein said radially imbalanced eccentric amount of weights is configured to enable eccentric exercise by imparting centripetal motion to said handle. 
     
     
         20 . The adjustable dumbbell according to  claim 1 , wherein said weights are 0.5 Kg to 2 Kg each.