Patent ID: 7192390

Claim:
An exercise device of the class of expander type exercisers and strand pulling exercisers in which an elastic member that is capable of expansion and contraction is disposed between a pair of handgrips that are configured to expand the elastic member for physical workout exercises by a user, said exercise device comprising: (a) a first handgrip and a second handgrip; each handgrip comprising a handle portion being configured to be held by a user; each handle portion comprising a first plane; said first plane comprising a substantial vertical plane when a corresponding handgrip is held by a band of a user; each handle portion comprising a base portion being configured with a groove to mount a plurality of roller elements; each grooved base portion disposing a corresponding groove opening in the direction remote from a corresponding handle portion; (b) a group of at least four roller elements being configured to be mounted in the grooved base portion of said first handgrip; a group of at least four roller elements being configured to be mounted in the grooved base portion of said second handgrip; each roller element having a longitudinal axis of rotation being disposed to extend transversely in reference to a corresponding first plane of a corresponding handgrip; each roller element comprising a circumferential groove disposed transversely in reference to a corresponding longitudinal axis of a corresponding roller element; (c) for each roller element a shaft structure being configured to be disposed in a corresponding grooved base portion and also being configured to mount a corresponding roller element in a corresponding grooved base portion; and (d) a single elastic strand element being configured to expand upon being pulled by a force of pull and being configured to contract upon release of a force of pull; said single elastic strand element being configured to be selectively disposed about said group of at least four roller elements of said first handgrip and said group of at least four roller elements of said second handgrip and between said first handgrip and said second handgrip in a first formation and in at least one other formation; said first formation comprising eight portions of said single elastic strand element being disposed about said group of at least four roller elements of said first handgrip and also about said group of at least four roller elements of said second handgrip, and between said first handgrip and said second handgrip; said at least one other formation comprising four portions of said single elastic strand element being disposed about at least two roller elements of said group of at least four grooved roller elements of said first handgrip and about at least two grooved roller elements of said group of at least four roller elements of said second handgrip, and between said first handgrip and said second handgrip.