Twistable gripable exercise device

Abstract

A wrist-grip exercise device is disclosed comprising two partial spheroids interconnected by an elastic central bridge, which partial spheroids may be rotatable axially 90 degrees in opposite directions around a longitudinal axis under the force, with each partial spheroid acting as a graspable handle. In some embodiments the partial spheroids are in the shape of hemispheres. The elastic bridge provides resistance to facilitate exercise and power to return the device to its original shape after being twisted and contorted during use. The elastic central bridge may be an elastomeric polymer material interconnecting the two partial spheroids. In other embodiments the central bridge is a coil spring. In some embodiments the handles are inflatable to facilitate compression grip exercises. In some embodiments the handles are attached to the coil spring by male-female connection system. Another embodiment of the present invention substitutes polyhedrons for the two partial spheroids.

What is claimed is: 
     
         1 . A handheld exercise device comprising:
 two hemispheres affixed to a cylindrical central bridge; each of the two hemispheres having a diameter exceeding a diameter of the central bridge;   wherein the central bridge is fabricated from a torque-resistant a twistable wrist-grip exercise device comprising polymeric material;   wherein resistance from a user's attempts to torque the hemispheres in opposing axial directions generates strength.   
     
     
         2 . The handheld exercise device of  claim 1 , wherein each of the hemispheres comprises an exterior surface defining a plurality of recesses for engaging the hands of a user. 
     
     
         3 . A handheld exercise device comprising:
 two interconnected partial spheroids, with the two partial spheroids being interconnected by an elastic central bridge of 0.25 to 11 inches length comprising a twistable resilient material; and   wherein the two interconnected partial spheroids are grasped as handles, palms facing each other, and temporarily rotated in opposite directions at least 90 degrees along their longitudinal axis by the muscular force of the hands, wrists and forearms; and   wherein each partial spheroid handle returns to its original position when the device is not under the force of muscular twisting or contortion.   
     
     
         4 . The device of  claim 3 , wherein the two partial spheroids and the twistable resilient material of the central bridge interconnecting the partial spheroids consist of a single piece of molded polymer; and wherein and wherein the device has the appearance of one bisected spheroid. 
     
     
         5 . The device of  claim 3 , wherein the central bridge interconnecting the two partial spheroids forms one or more channels in the surface between the interconnected partial spheroids, which channels appear as the joint between the two interconnected partial spheroids, each channel circumscribing the central bridge axially. 
     
     
         6 . The device of  claim 3 , wherein the twistable resilient material of the central bridge interconnecting the partial spheroids is in the shape of an internal third partial spheroid. 
     
     
         7 . The device of  claim 3 , wherein the two interconnected partial spheroids is formed of compressible foam contained within a shell of non-porous elastic polymer. 
     
     
         8 . The device of  claim 3 , wherein internal air is slowly released through an air release hole under compression and under decompression re-inflated through that same or similar hole. 
     
     
         9 . The device of  claim 3 , wherein the twistable resilient material of the central bridge interconnecting the partial spheroids comprises a coil spring. 
     
     
         10 . The device of  claim 3 , wherein the central bridge embodied by a coil spring connect to the partial spheroids by inserting the ends of the coil spring into a hole on the stems of the partial spheroids. 
     
     
         11 . The device of  claim 3 , wherein the partial spheroids are inflatable. 
     
     
         12 . The spheroid of  claim 3 , wherein the handles of the device are twisted and moved in relation to one another by a user to strengthen muscles and tendons in the wrist, hand, forearms, and shoulders. 
     
     
         13 . The spheroid of  claim 3 , wherein the device is compressed by a user to strengthen muscles and tendons in the wrist, hand, forearms, and shoulders. 
     
     
         14 . A handheld exercise device comprising:
 two interconnected polyhedrons, with the two polyhedrons being interconnected by an elastic central bridge of 0.25 to 11 inches length comprising a twistable resilient material; and   wherein the two polyhedrons are grasped as handles, palms facing each other, and temporarily rotated at least 90 degrees in opposite axial directions around their longitudinal axis by the muscular force of the hands, wrists and forearms; and   wherein each polyhedron handle returns to its original position when the device is not under the force of muscular twisting or contortion.   
     
     
         15 . The device of  claim 14 , wherein the two polyhedrons and the twistable resilient material of the central bridge interconnecting the two polyhedrons comprise a single piece molded polymer device. 
     
     
         16 . The device of  claim 14 , wherein the central bridge interconnecting two polyhedrons forms one or more channels in the surface of the connected polyhedrons, which channels appears as the joint between the two interconnected polyhedrons. 
     
     
         17 . The device of  claim 14 , wherein the two polyhedrons are formed of molded compressible foam. 
     
     
         18 . The device of  claim 14 , wherein the twistable resilient material of the central bridge interconnecting the two polyhedrons comprises a coil spring. 
     
     
         19 . The device of  claim 14 , wherein the central bridge embodied by a coil spring connect to the polyhedrons by inserting the ends of the coil spring into a hole on the stem of the polyhedrons. 
     
     
         20 . The device of  claim 14 , wherein the polyhedrons are twisted and moved in relation to one another by a user to strengthen muscles and tendons in the wrist, hand, forearms, and shoulders.