Resistance exercise device

Abstract

A bidirectional rotational resistance assembly is provided. The assembly includes a lever coupled to one or more discs so that a first torque imparted in a first rotational direction on the lever determines a rate of change of an angular momentum of each of the one or more discs in the first rotational direction in such a way as to oppose a second torque imparted in a second rotational direction on the lever, and a central axis operatively associated with lever, wherein the central axis is spaced apart from the one or more discs. For each disc of the one or more discs, a central gear interconnects the disc, and the central axle and/or disc gear operatively associates the disc and the respective central gear, wherein each disc is powered. The bidirectional rotational resistance assembly may include two opposing inertial discs.

What is claimed is: 
     
         1 . A method of providing bidirectional rotational resistance to a lever through a rotational force reaction of one or more discs, the method comprising:
 coupling the one or more discs to the lever so that a first torque imparted in a first rotational direction on the lever determines a rate of change of an angular momentum of each of the one or more discs in the first rotational direction in such a way as to oppose a second torque imparted in a second rotational direction of the lever; and   operatively associating a central axle to the lever.   
     
     
         2 . The method of  claim 1 , the method further comprising: interconnecting a bearing between the central axle and the lever. 
     
     
         3 . The method of  claim 1 , the method further comprising: interconnecting
 for each disc of the one or more discs, interconnecting the disc and the central axle by way of a central gear.   
     
     
         4 . The method of  claim 1 , wherein the first and second rotational directions are opposites. 
     
     
         5 . The method of  claim 1 , the method further comprising: for each disc of the one or more discs, operatively associating a disc gear between the disc and the respective central gear. 
     
     
         6 . The method of  claim 5 , wherein each disc gear is powered. 
     
     
         7 . The method of  claim 1 , wherein the one or more discs comprise two opposing inertial discs. 
     
     
         8 . A bidirectional rotational resistance assembly, comprising:
 a lever coupled to one or more discs so that a first torque imparted in a first rotational direction on the lever determines a rate of change of an angular momentum of each of the one or more discs in the first rotational direction in such a way as to oppose a second torque imparted in a second rotational direction on the lever; and   a central axis operatively associated with lever, wherein the central axis is spaced apart from the one or more discs.   
     
     
         9 . The assembly of  claim 8 , wherein the first and second rotational directions are opposites. 
     
     
         10 . The assembly of  claim 8 , further comprising: a bearing between the central axis and the lever. 
     
     
         11 . The assembly of  claim 8 , further comprising: for each disc of the one or more discs, a central gear interconnecting the disc and the central axle. 
     
     
         12 . The assembly of  claim 8 , further comprising: for each disc of the one or more discs, a disc gear operatively associating the disc and the respective central gear. 
     
     
         13 . The assembly of  claim 12 , wherein each disc is powered. 
     
     
         14 . The assembly of  claim 8 , wherein the one or more discs comprise two opposing inertial discs.