Emergency arrest device for zip line
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United States of America Patent
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-
Aug 4, 2020
Grant Date -
Aug 1, 2019
app pub date -
Jan 31, 2019
filing date -
Feb 1, 2018
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An emergency arrest device for a zip line is disclosed. The emergency arrest device is designed to tension and control a slide-and-grip knot, such as a Prusik knot, that is tied on the zip line. The device includes a mirror-image set of sidewalls, a front endwall connected between the pair of sidewalls at a front end of the device, and a rear endwall connected at a rear end of the device. The front and rear endwalls have openings sized to permit passage of the zip line therethrough. A tail fixation assembly including a clamp is mounted in the rear of the device. A knot-body control assembly is mounted in the front of the device. The knot-body control assembly includes arms that are resiliently biased to push the body of the slide-and-grip knot rearwardly when the device is impacted.
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