Barbell Having Decreased Destabilizing Forces And Method For Making Same

Abstract

A adjustable barbell producing decreased destabilizing forces during the lifting movement, and a method for making same, includes a bar having a pair of longitudinally-separated inner collars weighing no less than approximately 30 lbs, a pair of sleeves mounted for rotation about the longitudinal axis of the bar and sized to accommodate the through-holes of removable weight plates mounted on said sleeves, each sleeve being positioned longitudinally outward of a respective one of said collars, the collars thereby decreasing the stress on the bar and the moment of inertia of the weight being lifted.

1 . A method for decreasing the destabilizing forces acting on an adjustable barbell during a weightlifting movement comprising the steps of:
 affixing a pair of longitudinally separated collars weighing at least approximately 40 pounds each to a generally longitudinally-extending bar, the collars being positioned to permit the removable mounting of weight plates longitudinally outward of the collars by a user of the barbell.   
     
     
         2 . A method for assembling an adjustable barbell generating decreased destabilizing forces during a weightlifting movement comprising the steps of:
 affixing a pair of longitudinally separated collars weighing of at least approximately 40 pounds each to a generally longitudinally-extending bar to reduce the momentum of inertia resulting from weight being lifted;   mounting a pair of sleeves for rotation about the generally longitudinal axis of said bar, said sleeves being sized to accommodate generally central through-holes of removable weight plates mounted on said sleeves, each sleeve being positioned longitudinally outward of a respective collar.   
     
     
         3 . An adjustable barbell for lifting a desired amount of weight and comprising:
 a generally longitudinally-extending bar extending along a first generally longitudinal axis between a pair of end regions;   a pair of longitudinally separated collars weighing at least approximately 40 pounds each and affixed to the bar;   a pair of sleeves mounted at respective end regions of the bar for rotation about a second generally longitudinal axis, said sleeves being sized to accommodate generally central through-holes of removable weight plates mounted on said sleeves, each sleeve being positioned longitudinally outward of a respective one collar.   
     
     
         4 . The barbell of  claim 3  wherein the first and second axes are generally coaxial.