Adjustable dumbbell and system

A weight lifting system, comprising:

• a first weight having an upstanding first end with an aperture extending therethrough, an upstanding second end with an aperture extending therethrough, and a cross member extending between the first end and the second end;
• a second weight having an upstanding first end with an aperture extending therethrough, an upstanding second end with an aperture extending therethrough, and a cross member extending between the first end and the second end, the second weight being configured to receive the first weight between the ends thereof such that the apertures in the upstanding first ends of the respective first and second weights and the apertures in the upstanding second ends of the respective first and second weights are in axial alignment;
• a handle comprising:
• a grip configured to be grasped by a user, the grip having a channel extending from a first end of the grip to an opposing second end of the grip;
• and
• first and second end plates coupled to the opposing first and second ends of the grip, respectively, the grip being coupled to a central portion of each of the first and second end plates such that the opposing first and second ends of the grips are located away from the peripheral edges of the respective end plates;
• a pair of rods movably disposed within the channel of the grip;
• and
• means for selectively, simultaneously advancing the rods out of opposing ends of the handle such that the rods selectively pass through the corresponding apertures of the weights.

A weight lifting system, comprising:

• a weight having an upstanding first end with an aperture extending therethrough, an upstanding second end with an aperture extending therethrough, and a cross member extending between the first end and the second end;
• a handle comprising a grip configured to be grasped by a user, the grip having a channel extending from a first end of the grip to an opposing second end of the grip;
• a pair of rods movably disposed within the channel of the grip, the rods being configured to selectively attach the weight to the handle, each rod having teeth formed along the length thereof;
• and
• a pinion gear pivotally coupled to the handle, the pinion gear disposed between the rods, the teeth of each rod engaging the pinion gear;
• and
• a knob slidably engaged on the grip and coupled to one of the rods movably disposed within the channel of the grip, the knob being selectively depressable by a digit on the hand with which the user grasps the grip, whereby the user is enabled to selectively slide the knob with the digit, thereby causing the pair of rods to selectively attach the weight to the handle.

A weight lifting system, comprising:

• a weight having an upstanding first end, an upstanding second end, and a cross member extending between the first end and the second end;
• a handle comprising a grip configured to be grasped by a user, the grip having a channel extending from a first end of the grip to an opposing second end of the grip;
• first and second rods movably disposed within the channel of the grip, the first and second rods being configured to selectively attach the weight to the handle;
• and
• means for selectively, simultaneously advancing the first and second rods out of opposing ends of the grip, the handle further comprising first and second plates coupled to the first and second ends of the grip respectively, the first and second ends of the grip being coupled to central portions of the first and second end plates, respectively, such that the opposing first and second ends of the grip are located away from the peripheral edges of the respective end plates.