| US 7,377,885 B2 | ||
| Dumbbell adjusting system method | ||
| Adam T. Doudiet, San Francisco, Calif. (US) | ||
| Assigned to ATD Services, Inc., San Francisco, Calif. (US) | ||
| Filed on Oct. 19, 2006, as Appl. No. 11/584,684. | ||
| Application 11/584684 is a division of application No. 11/301812, filed on Dec. 12, 2005, granted, now 7,137,932. | ||
| Claims priority of provisional application 60/635876, filed on Dec. 13, 2004. | ||
| Prior Publication US 2007/0037675 A1, Feb. 15, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. A63B 21/075 (2006.01) | ||
| U.S. Cl. 482—107 [482/98; 482/108] | 8 Claims |
| 1. A method for adjusting the weight of each end of a dumbbell, said method comprising:
providing a dumbbell including a tube handle and a plurality of weights on each end; and
turning the tube handle to axially advance or retract rods into each of the plurality of weights, wherein the number of weights
engaged by the rods is always the same on each end; and
wherein the rods axially rotate to selectively engage the weights.
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