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Dumbbell adjusting system

  • US 7,137,932 B2
  • Filed: 12/12/2005
  • Issued: 11/21/2006
  • Est. Priority Date: 12/13/2004
  • Status: Expired due to Fees
First Claim
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1. A dumbbell system providing user selected weight comprises:

  • a tube having an inner axial passage and an outer surface adapted for manual grasping;

    two externally threaded rods having external threads and being mounted to axially translate within the axial passage, wherein the rods are coupled to the tube so that rotation of the tube causes rotation of the rods; and

    a plurality of weights having threaded center holes and arranged successively on each end of the tube, wherein rotation causes the threads of the rods to engage the threaded center holes to advance the rods into the center holes of the weights.

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