Dumbbell having secured assembly

Abstract

An exercise device used to provide resistance to the contraction of a muscle during weight lifting. The exercise device consists of a handle with two weighted members connected on opposing ends of the handle. The weighted members are connected through a press fit manufacturing technique. Each opposing end of the handle has at least one channel about the periphery of the handle ends that is used to collect metal shavings generated during the press fit manufacturing process. By collecting the metal shavings, a connection that not only has a tight tolerance, but also has few imperfections at the interface between the flushed surfaces is created.

1 . An improved dumbbell exercise device having an integrally secure assembly, tight tolerance, and at least one non-rotating weight, comprising:
 a central handle with opposing ends, wherein each said end has a geometric shape;   said central handle further including groove means for securing one or more weights to said handle;   each said weight having an interior aperture for receiving said handle end, said interior aperture providing tight tolerance with said handle end, said aperture having a circumference and being of a complementary shape to said geometric shape of said opposing ends of said central handle;   said central handle being press fit within said one or more weights;   wherein undesired material shavings are created from said press fit process, said groove means receiving said material shavings and providing an extremely secure surface to surface assembly of said handle and said one or more weights.   
   
   
       2 . The exercise device of  claim 1 , wherein said handle ends further include a central bore at least part way through each said end;
 said central bore including thread means;   bolt means for further securing said one or more weights to said central handle;   said bolt means including threads which are complementary to said central bore threads;   said central bore receiving said bolt means in threaded engagement.   
   
   
       3 . The exercise device of  claim 1 , wherein said central handle further includes flange means for providing an abutting interface to said one or more weights, said flange means further limiting the placement of said central handle end within said one or more weights. 
   
   
       4 . The exercise device of  claim 2 , wherein said one or more weight means has an exterior aperture;
 said device further comprising a washer with a predetermined circumference, said exterior aperture receiving said washer and said bolt means;   said bolt means protruding through said one or more weights and engaging said central bore threads.   
   
   
       5 . The exercise device of  claim 1 , wherein said groove means further comprises a plurality of grooves, said grooves placed about the periphery of said ends of said central handle. 
   
   
       6 . The exercise device of  claim 5 , wherein said central handle opposing ends are generally cylindrical in geometric shape;
 said grooves further being generally parallel and equally spaced about said ends of said central handles;   said grooves further being generally continuous about said ends of said central handle.   
   
   
       7 . The exercise device of  claim 5 , wherein said central handle opposing ends are generally rectangular in geometric shape;
 said grooves further being generally parallel and equally spaced about said ends of said central handle;   said grooves further being generally continuous about said ends of said central handle.   
   
   
       8 . The exercise device of  claim 1 , wherein said central handle opposing ends and said weight interior apertures are metal. 
   
   
       9 . The exercise device of  claim 1 , further comprising an end cap including at least one nipple to be placed over an outer surface of said one or more weights, wherein said outer surface includes at least one void complementary to each said nipple. 
   
   
       10 . The exercise device of  claim 3  further comprising a bonding agent, said bonding agent being placed about said central handle opposing ends, said bonding agent further securing said one or more weights to said central handle. 
   
   
       11 . An improved dumbbell exercise device having an integrally secure assembly, tight tolerance, and a pair of non-rotating weights, comprising:
 a central handle with opposing ends, wherein each said end has a geometric shape;   said central handle further including a plurality of external grooves spaced about said opposing ends for securing said weights to said central handle;   each said weight having an interior aperture for receiving said handle end, said interior aperture providing tight tolerance with said handle end, said aperture having a circumference and being of a complementary shape to said geometric shape of said opposing ends of said central handle;   said central handle being press fit within said pair of weights;   said plurality of grooves securely fit entirely within said weight interior aperture;   wherein undesired material shavings are created from said press fit process, said plurality of grooves receiving said material shavings and providing an extremely secure surface to surface assembly of said handle and said pair of weights.   
   
   
       12 . The exercise device of  claim 11 , wherein said central handle opposing ends further include a central bore at least part way through each said end;
 said central bore including thread means;   bolt means for further securing said one or more weights to said central handle;   said bolt means including threads which are complementary to said central bore threads;   said central bore receiving said bolt means in threaded engagement.   
   
   
       13 . The exercise device of  claim 11 , wherein said central handle further includes a pair of peripheral flanges, said flanges providing an abutting interface to said pair of weights;
 said central handle opposing ends extending outwardly from said peripheral flanges;   said pair of peripheral flanges further limiting the placement of said central handle opposing ends within said pair of weights.   
   
   
       14 . The exercise device of  claim 13 , wherein said central handle opposing ends are generally cylindrical in geometric shape;
 said grooves further being generally parallel and equally spaced about said ends of said central handle;   said grooves further being generally continuous about said ends of said central handle.   
   
   
       15 . The exercise device of  claim 14 , wherein said central handle opposing ends and said weight interior apertures are metal.