Adjustable dumbbell system

A dumbbell base for a plurality of weights and for a dumbbell including a selector for associating at least one of the plurality of weights with the dumbbell and a locking mechanism for restricting movement of the selector, the dumbbell base comprising:

• a first end portion to receive at least one first weight of the plurality of weights;
• a second end portion to receive at least one second weight of the plurality of weights;
• a center portion positioned between the first and second end portions;
• a first member for deactivating the locking member and positioned within the center portion;
• a second member for selectively coupling the dumbbell to the dumbbell base;
• and
• the first and second members are integrally formed, wherein:
• when the dumbbell is coupled to the dumbbell base by the second member, a user is unable to readily remove the dumbbell from the dumbbell base;
• and
• when the dumbbell is not coupled to the dumbbell base by the second member, the user may readily remove the dumbbell from the dumbbell base.

An adjustable dumbbell apparatus, comprising:

• a dumbbell comprising:
• a bar;
• a selector for operably engaging and disengaging at least one weight with the bar by moving the selector relative to the bar;
• and
• a locking mechanism operatively associated with the selector;
• and
• a base to receive the dumbbell and the at least one weight and including an actuator positioned within a portion of the base not receiving the at least one weight;
• the locking mechanism preventing movement of the selector relative to the bar when the dumbbell is not received in the base;
• the actuator releasing the locking mechanism when the dumbbell is received in the base, thus allowing the selector to move relative to the bar;
• and
• the locking mechanism comprising:
• a first member mounted on the bar in a fixed rotational position relative to the bar;
• a second member rotatably mounted on the bar and operatively associated with the selector;
• a coupling device moveable between at least first and second positions for coupling and decoupling the first and second members and biased to the first position, wherein:
• the first member is coupled to the second member when the coupling device is in the first position;
• the first member is decoupled from the second member when the coupling device is in the second position;
• movement of the selector relative to the bar is restricted when the first member is coupled to the second member;
• movement of the selector relative to the bar is allowed when the first member is decoupled from the second member;
• the actuator deactivates the locking mechanism by moving the coupling device from the first position to the second position when the dumbbell is received in the base;
• and
• the second member is selectively rotatable around the bar to a plurality of rotational positions.