Abdominal rocking exercise apparatus

Abstract

An apparatus comprises a frame assembly comprising two frame members extending longitudinally above a surface and at least two crossbars joining the two frame members. A backrest platform comprises a generally convex shape configured for supporting a user's back. The backrest platform comprises a plurality of rollers configured for rolling on the user's back during exercising. The backrest platform is joined to a first of the crossbars for rotation about the first crossbar. A seat platform comprises a generally concave shape configured for supporting the user's seat. The seat platform comprises a plurality of rollers configured for rolling on the user's seat during exercising. The seat platform is joined to a second of the crossbars for rotation about the second crossbar. Two handle grips are joined to the frame assembly for grasping during the user's exercising.

What is claimed is: 
     
         1 . An apparatus comprising:
 a frame assembly comprising two frame members being configured to extend longitudinally above a surface and at least two crossbars joining said two frame members;   a backrest platform comprising a generally convex shape configured for supporting a user's back, said backrest platform further comprising a plurality of rollers being configured for rolling on the user's back during exercising, said backrest platform being joined to a first of said crossbars for rotation about said first crossbar;   a seat platform comprising a generally concave shape configured for supporting the user's seat, said seat platform further comprising a plurality of rollers being configured for rolling on the user's seat during exercising, said seat platform being joined to a second of said crossbars for rotation about said second crossbar; and   two handle grips being joined to said frame assembly for grasping during the user's exercising.   
     
     
         2 . The apparatus as recited in  claim 1 , further comprising a headrest being configured for engaging a head and neck of the user during the exercising. 
     
     
         3 . The apparatus as recited in  claim 1 , in which said frame assembly further comprises at least two hinges for folding the frame for storage. 
     
     
         4 . The apparatus as recited in  claim 1 , in which said frame assembly further comprises a plurality of leg bases for supporting said frame assembly on the surface. 
     
     
         5 . The apparatus as recited in  claim 1 , further comprising a plurality of resistance bands being configured for supplying resistance during the exercising. 
     
     
         6 . The apparatus as recited in  claim 2 , in which said headrest further comprises a roller being configured for supporting the user's head and neck and rolling during the exercising. 
     
     
         7 . The apparatus as recited in  claim 2 , in which said frame assembly further comprises a third crossbar and said headrest is joined to said third crossbar for rotating about said crossbar. 
     
     
         8 . The apparatus as recited in  claim 7 , further comprising means for applying a resistance to said rotation of said headrest. 
     
     
         9 . The apparatus as recited in  claim 8 , in which said means for applying a resistance is joined to said third crossbar. 
     
     
         10 . The apparatus as recited in  claim 2 , in which said headrest is joined to said backrest platform. 
     
     
         11 . The apparatus as recited in  claim 1 , in which said backrest platform further comprises a convex center bar and a plurality of arms extending from said center bar for supporting said rollers. 
     
     
         12 . The apparatus as recited in  claim 11 , in which said seat platform further comprises a concave center bar and a plurality of arms extending from said concave center bar for supporting said rollers. 
     
     
         13 . The apparatus as recited in  claim 1 , in which said backrest platform further comprises two convex attachment plates for supporting said rollers. 
     
     
         14 . The apparatus as recited in  claim 13 , in which said seat platform further comprises two concave attachment plates for supporting said rollers. 
     
     
         15 . An apparatus comprising:
 a frame assembly comprising two frame members being configured to extend longitudinally above a surface and at least two crossbars joining said two frame members;   means for supporting a user's back;   means for supporting the user's seat; and   means for grasping during the user's exercising.   
     
     
         16 . The apparatus as recited in  claim 15 , further comprising means for engaging a head and neck of the user during the exercising. 
     
     
         17 . The apparatus as recited in  claim 16 , further comprising means for applying a resistance to a rotation of said means for engaging a head and neck of the user during the exercising. 
     
     
         18 . The apparatus as recited in  claim 15 , further comprising means for supplying resistance during the exercising. 
     
     
         19 . The apparatus as recited in  claim 15 , further comprising means for supporting said frame assembly on the surface. 
     
     
         20 . An apparatus comprising:
 a frame assembly comprising two frame members being configured to extend longitudinally above a surface, at least three crossbars joining said two frame members, a plurality of leg bases for supporting said frame assembly on the surface, and at least two hinges for folding the frame for storage;   a backrest platform comprising a generally convex shape configured for supporting a user's back, said backrest platform further comprising a plurality of rollers being configured for rolling on the user's back during exercising, said backrest platform being joined to a first of said crossbars for rotation about said first crossbar;   a seat platform comprising a generally concave shape configured for supporting the user's seat, said seat platform further comprising a plurality of rollers being configured for rolling on the user's seat during exercising, said seat platform being joined to a second of said crossbars for rotation about said second crossbar;   a headrest being configured for engaging a head and neck of the user during the exercising, said headrest comprising a roller being configured for supporting the user's head and neck and rolling during the exercising;   means for applying a resistance to said rotation of said headrest; and   two handle grips being joined to said frame assembly for grasping during the user's exercising.