Patent ID: 8439807

Claim:
An exercise apparatus comprising: a right treadle assembly having a deck and an endless tread belt that runs over the deck to provide a right moving tread surface, the right treadle assembly being pivotable about a pivot axis; a left treadle assembly having a deck and an endless tread belt that runs over the deck to provide a left moving tread surface, the left treadle assembly being pivotable about the pivot axis; an interconnection assembly positioned primarily below and operably connecting the right and left treadle assemblies so that pivotal movement of either of the right and left treadle assemblies in a first direction causes pivotal movement of the other of the right and left treadle assemblies in a second direction that is opposite the first direction; and a resistance element positioned primarily below the right and left treadle assemblies and coupled to the interconnection assembly to resist pivotal motion of the first and second treadle assemblies, and the resistance element including a torsion spring element coupled to the interconnection assembly to provide torsion resistance to movement of the interconnection assembly.