3-ring release system

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3-ring release system on a single riser of a packed main parachute
The 3-ring release system is a parachute component that is universally used to attach each of the two risers of a main parachute to the harness that bears the load under the parachute. Invented by Bill Booth the three ring system's advantage over other approaches is that it allows a skydiver to quickly cut away from a malfunctioning main parachute with a single motion in preparation for deploying a reserve parachute. The three ring system accomplishes this so effectively by employing a series of 3 interlocking rings to successively increase the mechanical advantage of a final loop of chord that is held in place by a semi-rigid cable (a Lolon-F or Teflon coated steel cable depending on manufacturer). Despite holding the load of a skydiver the cable may be easily withdrawn from the retaining loop with a small pull force and that triggers the three ring system to cascade free and quickly disconnect the riser attachment.

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See also: 3-ring release system, Parachute, Teflon