Universal variable resistance device

Abstract

A universal variable resistance device is disclosed. The device includes a flexible, resilient rod having a base end for mounting to a stable or immovable object, and a distal end against which a force is exerted to flex the rod. One or more outer rods are coaxially mounted around the rod. Each of the one or more outer rods is configured to extend toward the distal end of the center rod to provide an increased resistance to the force and retract toward the base end of the center rod to provide less resistance to the force. Alternatively, a holder is provided that holds the rod at a point along the rod. The holder is configured to slide toward the distal end of the rod to provide an increased resistance to the force, and slide toward the base end of the rod to provide less resistance to the force.

1 . A universal variable resistance device comprising: 
 a flexible, resilient center rod having a base end for mounting to a stable or immovable object, and a distal end against which a force is exerted to flex the center rod; and    one or more outer rods coaxially mounted around the center rod, and being configured to extend toward the distal end of the center rod to provide an increased resistance to the force, and to retract toward the base end of the center rod to provide less resistance to the force.    
     
     
         2 . A universal variable resistance device in accordance with  claim 1 , further comprising a connector attached proximate the distal end of the center rod, for connecting to an object that exerts the force.  
     
     
         3 . A universal variable resistance device in accordance with  claim 1 , wherein each rod is formed of fiberglass.  
     
     
         4 . A universal variable resistance device in accordance with  claim 1 , wherein each rod is formed of a composite fiber material.  
     
     
         5 . A universal variable resistance device in accordance with  claim 1 , further comprising a connector attached to the distal end of the center rod and to a distal end of each of the one or more outer rods, and wherein each connector includes an aperture.  
     
     
         6 . A universal variable resistance device, comprising: 
 a flexible, resilient rod having a base end for mounting to a stable or immovable object, and a distal end against which a force is exerted to flex the rod; and    a holder that holds the rod at a point along the rod, the holder being configured to slide toward the distal end of the rod to provide an increased resistance to the force, and to slide toward the base end of the rod to provide less resistance to the force.    
     
     
         7 . A universal variable resistance device in accordance with  claim 6 , further comprising a connector attached proximate the distal end of the rod, for connecting to an object that exerts the force.  
     
     
         8 . A universal variable resistance device in accordance with  claim 6 , wherein the rod is made of fiberglass.  
     
     
         9 . A universal variable resistance device in accordance with  claim 6 , wherein the rod is formed of a composite fiber material.  
     
     
         10 . A universal variable resistance device in accordance with  claim 6 , wherein the holder includes an aperture through which the rod extends and by which the rod is held.