Adjustable dumbbell system

A dumbbell and base system comprising:

• a variable weight dumbbell having at least one weight plate, and having means for selecting the at least one weight plate on the dumbbell to provide the desired weight load, and means for disabling said means for selecting;
• a base for receiving said dumbbell;
• means for selectively securing said dumbbell in said base when said means for selecting is not fully engaged;
• and
• wherein said means for selecting is operable only when said dumbbell is positioned in said base and said means for disabling is actuated only when said dumbbell is removed from said base.

A dumbbell comprising:

• a handle having a grip and at least one end;
• an inner plate mounted on said handle adjacent said grip;
• a support plate rotationally mounted on said handle;
• at least one collar rotationally mounted on said handle and coupled with said support plate;
• a selector knob rotationally mounted on said handle and coupled with said collar;
• a weight plate removably mounted on said handle in relation with said at least one collar;
• a means for selectively securing said support plate to said inner plate to resist the rotation of said support plate, collar and selector knob with respect to the inner plate and handle.

A dumbbell and base system comprising:

• a variable weight dumbbell comprising:
• at least one weight plate;
• a selection device operably associated with the at least one weight plate to provide a desired weight load;
• and
• a locking device operably associated with the selection device to disable the selection device;
• a base for receiving said dumbbell comprising:
• at least one protrusion selectively operable with the selection device to secure the variable weight dumbbell to the base when the selection device is not fully engaged;
• wherein the selection device is operable only when the dumbbell is positioned in the base, and the locking device is actuated only when the dumbbell is removed from the base.