US Patent 7699761 Overspeed trainer system

A single-handed overspeed trainer system that detachably tethers an athlete to a trainer through a substantially quiet, non-hook and loop material, release structure is disclosed. In one embodiment, the athlete wears a belt with a substantially rigid loop extending therefrom. The trainer holds one end of a tether that contains a retractable pin toward its opposite end. The pin holds the rigid loop of the belt until the pin is retracted by the trainer, preferably when the tether's handle is released by the trainer.