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US 6,712,181 B2Granted
Safety rope grab device
OwnerSteve Nicholsinventor
Life of this patent
Estimating the term…
Abstract
A Prusik knot has several helical wraps around a tether line or a lifeline, a longitudinal loop extending over the wraps, and free end portions tucked or threaded under the loop. A special cover encases the free end portions of the knot.
Claims14
A rope grab system comprising:
- a tether line;
- an associated Prusik knot on the tether line, the Prusik knot having a series of wraps around the tether line, a loop extending longitudinally of the tether line-over the wraps and free end portions extending from the wraps and beneath the longitudinal loop;
- and
- a cover including an eye and encasing the free end portions of the knot beyond the longitudinal loop, the cover having an internal cavity offset from the eye, and the free ends of the knot having adjacent portions extending alongside each other and secured together within in the cavity.
1 more element
A rope grab system comprising:
- a tether line;
- an associated Prusik knot on the tether line, the Prusik knot having a series of wraps around the tether line, a loop extending longitudinally of the tether line over the wraps and first and second free end portions extending side by side from the wraps and beneath the longitudinal loop;
- and a cover encasing the free end portions of the knot beyond the longitudinal loop, the cover having a near end portion including at least one opening through which the first and second free end portions of the knots pass, a far end portion having an eye and a rope receiving internal channel surrounding the eye, the first free end portion of the knot entering the cover through the opening of the near end portion of the cover and extending through the channel to form a bight around the eye, the first free end portion terminating adjacent to the near end portion of the cover and extending alongside a section entering the cover, the second free end portion of the knot entering through the near end portion of the cover, extending alongside the first free end portion and being secured therein to the first free end portion.
Dependencies are inferred from the claim text.