Multi-grip dumbbell

Abstract

The current application is directed to a multi-grip dumbbell. One example multi-grip dumbbell includes a central dumbbell handle, a first weighted head interconnected to the central dumbbell handle in proximity to a first end of the central dumbbell handle, and a second weighted head interconnected to the central dumbbell handle in proximity to a second end of the central dumbbell handle. The first weighted head has approximately the same weight as the second weighted head. The first weighted head includes a first end dumbbell handle and two side dumbbell handles. Similarly, the second weighted head includes a second end dumbbell handle and two side dumbbell handles.

1 . A multi-grip dumbbell comprising:
 a central dumbbell handle having a first end and a second end;   a first weighted head interconnected to the central dumbbell handle in proximity to the first end of the central dumbbell handle, the first weighted head including at least one additional dumbbell handle; and   a second weighted head interconnected to the central dumbbell handle in proximity to the second end of the central dumbbell handle, the second weighted head including at least one additional dumbbell handle.   
     
     
         2 . The multi-grip dumbbell of  claim 1   wherein the first weighted head includes a first side dumbbell handle and a second side dumbbell handle; and   wherein the second weighted head includes a third side dumbbell handle and a fourth side dumbbell handle.   
     
     
         3 . The multi-grip dumbbell of  claim 1   wherein the first weighted head includes a first end dumbbell handle; and   wherein the second weighted head includes a second end dumbbell handle.   
     
     
         4 . The multi-grip dumbbell of  claim 1   wherein the first weighted head includes a first side dumbbell handle, a second side dumbbell handle, and a first end dumbbell handle; and   wherein the second weighted head includes a third side dumbbell handle, a fourth side dumbbell handle, and a second end dumbbell handle.   
     
     
         5 . The multi-grip dumbbell of  claim 4  wherein the central dumbbell handle is contoured, having a continuously varying cross-section diameter. 
     
     
         6 . The multi-grip dumbbell of  claim 5  wherein the central dumbbell handle includes annular grip features. 
     
     
         7 . The multi-grip dumbbell of  claim 5  wherein the central dumbbell handle includes lateral grip features. 
     
     
         8 . The multi-grip dumbbell of  claim 4  wherein the cylindrical ring in each weighted head is one of:
 circularly shaped; 
 elliptically shaped; 
 triangularly shaped, 
 hexagonally shaped, and 
 rectangularly shaped. 
 
     
     
         9 . The multi-grip dumbbell of  claim 4  wherein the first weighted head and the second weighted head each includes a cylindrical ring and a crossing member. 
     
     
         10 . The multi-grip dumbbell of  claim 9  wherein each crossing member includes a mounting aperture into which a complementary feature at the end of the central dumbbell handle is mounted. 
     
     
         11 . The multi-grip dumbbell of  claim 10  wherein an end dumbbell handle is mounted about each crossing member. 
     
     
         12 . The multi-grip dumbbell of  claim 11  wherein a weight-plate bracket is included in each end dumbbell handle, the weight-plate bracket having an aperture through which a bolt passes to securely mount the end dumbbell handle and weighted head including the end dumbbell handle to the central dumbbell handle. 
     
     
         13 . The multi-grip dumbbell of  claim 4  wherein each weighted head is fabricated as a single-piece casting. 
     
     
         14 . The multi-grip dumbbell of  claim 4  wherein the weighted-heads, end dumbbell handles, and/or central dumbbell handle are over molded with a rubber, plastic, or other polymeric material. 
     
     
         15 . The multi-grip dumbbell of  claim 4  wherein the weighted-heads, end dumbbell handles, and/or central dumbbell handle are fabricated from one or more of:
 a metal or metal alloy, including iron, steel, and stainless steel; 
 a plastic or polymeric material; and 
 a structured material, including fiberglass, with embedded reinforcing fibers. 
 
     
     
         16 . The multi-grip dumbbell of  claim 4  wherein the central dumbbell handle includes an outer, hollow central-dumbbell handle member that is selectably rotatably mounted to the multi-grip dumbbell. 
     
     
         17 . The multi-grip dumbbell of  claim 16  wherein, when a selection feature is configured in a first position, the position of the outer, hollow central-dumbbell handle member is fixed with respect to an inner central-dumbbell handle member to which the weighted heads are fixedly mounted, and when the selection feature is configured in a second position, the position of the outer, hollow central-dumbbell handle member is not fixed with respect to the inner central-dumbbell handle member, allowing the outer, hollow central-dumbbell handle member to rotate with respect to the weighted heads and inner central-dumbbell handle member. 
     
     
         18 . The multi-grip dumbbell of  claim 17  wherein the selection feature is one of:
 one or more locking pins; and 
 one or more locking balls and corresponding twistable collars with inner locking-ball tracks.