Patent ID: 7857737

Claim:
An oscillating exercise device, comprising: a tube having an internal lumen with internally threaded ends; a weight mass of a size that fits within the internal lumen of the tube such that the weight mass can travel through the internal lumen; two threaded end caps that screw into the internally threaded ends of the tube; two springs coupled to the two threaded end caps such that each threaded end cap has a spring that is located within the internal lumen when each threaded end cap is threadably coupled with the internally threaded ends; one or more elastic resistance bands; and a hinged clamshell handle configured to receive the one or more elastic resistance bands between the tube and the hinged clamshell handle, the hinged clamshell handle including: a first handle portion having a first internal surface adapted to receive the tube and one or more elastic resistance bands; a second handle portion having a second internal surface adapted to receive the tube and one or more elastic resistance bands; and one or more hinges coupled to the first and second handle portions such that the first and second handle portions are capable of being in an open orientation to release the tube and one or more elastic resistance bands and being in a closed orientation to grip the tube and one or more elastic resistance bands.