Exercise device

Abstract

An exercise device comprises left and right hand levers each including a rod and a pivot seat attached to one end of the rod; a pull member consisting of a stem and a block, the stem being vertically disposed in the center of the block; a torsion-adjusting mechanism sleeved onto the stem; and two arms, one of which has two ends pivotally connected to one end of the block and the pivot seat of the left hand lever, respectively, and the other of which has two ends pivotally connected to the other end of the block and the pivot seat of the right hand lever, whereby a user grips one end of the left and right hand levers with his two hands and apply a bending force thereon to achieve the object of exercise of the arm portion.

What is claimed is:  
     
         1 . An exercise device, comprising: 
 left and right hand levers each having a rod and a pivot seat fixedly attached to one end of said rod;    a pull member consisting of a stem and a block, said stem being vertically disposed in the center of said block;    a torsion-adjusting mechanism sleeved onto said stem and including a connecting member for pivotal connection to said pivot seat; and    two arms, one of which has two ends pivotally connected to one end of said block and said pivot seat of said left hand lever, respectively, and the other of which has two ends pivotally connected to the other end of said block and said pivot seat of said right hand lever.    
     
     
         2 . An exercise device as claimed in  claim 1 , wherein said pivot seat of each of said left and right hand levers defines a space, and the two ends of said block define a space, both spaces providing for pivotal rotation of the two ends of said two arms, respectively  
     
     
         3 . An exercise device as claimed in  claim 1 , wherein said torsion-adjusting mechanism further includes an adjustment nut, a spring and a support disk, said adjustment nut being provided with a threaded hole in the center of the top portion thereof, said stem being passed through the center of said adaptor, the through hole of said support disk and the center of said spring, in that order, and then being threadedly locked into said threaded hole of said adjustment nut.  
     
     
         4 . An exercise device as claimed in  claim 1 , wherein said connecting member extends a rod provided for pivotal connection of said pivot seat.