Exercise device

Abstract

An exercise device has a seat pivotally coupled to at least one rocker. A forward support member extends from the seat and has a roller mounted proximate to a forward end thereof. The user sits on the seat and rocks forward and/or backward to exercise muscles of the torso and lower body.

What is claimed is:  
     
         1 . An exercise device comprising: 
 a forward support member;    a roller mounted proximate to a forward end of the forward support member;    a seat coupled to the forward support member;    at least one rocker pivotally coupled to one of the forward support member and the seat;    a back support coupled to the rocker; and    a handgrip coupled to the rocker.    
     
     
         2 . The exercise device of  claim 1  wherein the at least one rocker is one of a pair of rockers disposed laterally outboard of the seat.  
     
     
         3 . The exercise device of  claim 1  further comprising a rocker extension coupled to the rocker.  
     
     
         4 . The exercise device of  claim 3  wherein the rocker extension is one of a plurality of rocker extensions, each having a length different from all other rocker extensions.  
     
     
         5 . The exercise device of  claim 3  wherein the rocker extension is coupled to a forward end of the rocker.  
     
     
         6 . The exercise device of  claim 3  wherein the rocker extension is coupled to a rearward end of the rocker.  
     
     
         7 . The exercise device of  claim 3  wherein the rocker extension is a first rocker extension coupled to a forward end of the rocker and further comprising a second rocker extension coupled to a rearward end of the rocker.  
     
     
         8 . The exercise device of  claim 1  further comprising a footrest coupled to the forward end of the forward support member.  
     
     
         9 . The exercise device of  claim 2  wherein the handgrip is one of a pair of handgrips.  
     
     
         10 . The exercise device of  claim 9  wherein each of the pairs of handgrips is coupled to a respective one of the pair of rockers.  
     
     
         11 . The exercise device of  claim 10  wherein each of the pair of handgrips comprises a length of round tubing.  
     
     
         12 . The exercise device of  claim 11  wherein each of the pair of rockers includes a section of square tubing to receive the length of round tubing of the respective handgrip.  
     
     
         13 . The exercise device of  claim 12  wherein each of the pair of handgrips comprises a stop means disposed on the length of round tubing to limit rotational movement of the round tubing within the respective section of square tubing.  
     
     
         14 . The exercise device of  claim 1  wherein the forward support member is adjustable for length.  
     
     
         15 . The exercise device of  claim 14  wherein the forward support member comprises first and second telescoping sections.  
     
     
         16 . The exercise device of  claim 1  further comprising an upright member supporting the back support.  
     
     
         17 . The exercise device of  claim 16  wherein the upright member is adjustable for length.  
     
     
         18 . The exercise device of  claim 17  wherein the upright member comprises first and second telescoping sections.  
     
     
         19 . An exercise device comprising: 
 a pair of longitudinally parallel rockers;    a seat support member transverse to the pair of rockers and pivotally coupled thereto;    a seat coupled to the seat support member;    a forward support member coupled to the seat support member and extending longitudinally forward thereof;    a roller mounted proximate to a forward end of the forward support member.    
     
     
         20 . The exercise device of  claim 19  further comprising a back support coupled to the pair of rockers.  
     
     
         21 . The exercise device of  claim 20  further comprising a cross-member joining the pair of runners and an upright member coupled to the cross-member supporting the back support.  
     
     
         22 . The exercise device of  claim 19  further comprising a pair of handgrips, each coupled to a respective one of the pair of rockers.  
     
     
         23 . The exercise device of  claim 19  further comprising a footrest coupled to the forward end of the forward support member.  
     
     
         24 . A coupling arrangement between a first member and a second member comprising: 
 a generally round-sectioned plug attached to the first member;    a polygonal socket attached to the second member adapted to receive the plug;    a stop means disposed on the plug to contact a wall of the polygonal socket upon rotation of the plug within the socket;    whereby the plug may be inserted into the socket in a plurality of rotational orientations but is prevented from rotating freely therein by the stop means.