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US 11,597,476 B2Granted
Controlled failure point for a rope or mooring loop and method of use thereof
OwnerThomas W. Fieldsinventor
Life of this patent
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Abstract
A mooring loop is operative to secure a movable device such as a ship in connection with a bollard or other fixed structure. The exemplary mooring loop includes a continuous rope segment that includes at least one coil or a plurality of coils. The rope segment defining the mooring loop includes an inner core surrounded by an outer jacket. A plurality of controlled failure points are included in the rope segment. The failure points enable the rope segment to permanently elongate in response to an applied tension force at a level above a working range, which elongation is visibly observable. The controlled failure point is defined between segmented ends of a severed inner core such that only the outer jacket is located at the controlled failure point.
Claims18
A mooring loop comprising:
- an outer jacket and an inner core defining a rope;
- a first controlled failure point in the rope defined by segmented ends that sever the inner core within the outer jacket, wherein there is only the outer jacket and there is no inner core in the rope at the first controlled failure point;
- and
- a yield strength of the first controlled failure point that is in a range of 50% to 90% of a yield strength of the rope along a portion of the rope where the outer jacket surrounds the inner core.
1 more element
A mooring loop comprising:
- an outer jacket and an inner core defining a rope;
- a first controlled failure point in the rope defined by segmented ends that sever the inner core within the outer jacket, wherein there is only the outer jacket and there is no inner core in the rope at the first controlled failure point;
- and wherein the inner core is composed of 150% elongation polyester fiber.
A mooring loop comprising:
- an outer jacket and an inner core defining a rope;
- a first controlled failure point in the rope defined by segmented ends that sever the inner core within the outer jacket, wherein there is only the outer jacket and there is no inner core in the rope at the first controlled failure point;
- and wherein the inner core is composed of twenty-four ends of 700 denier yarn.
A mooring loop comprising:
- an outer jacket and an inner core defining a rope;
- a first controlled failure point in the rope defined by segmented ends that sever the inner core within the outer jacket, wherein there is only the outer jacket and there is no inner core in the rope at the first controlled failure point;
- and wherein the inner core includes yarns that are each twisted in the S-direction in a range of 0.25 turns per inch to 1.25 turns per inch and are at a braid angle in a range from 30° to 60° relative to a central axis.
A mooring loop comprising:
- an outer jacket and an inner core defining a rope;
- a first controlled failure point in the rope defined by segmented ends that sever the inner core within the outer jacket, wherein there is only the outer jacket and there is no inner core in the rope at the first controlled failure point;
- a plurality of twisted yarns forming the inner core;
- a plurality of twisted yarns forming the outer jacket;
- and
- wherein the plurality of twisted yarns forming the inner core and the plurality of yarns forming the outer jacket are twisted in the same twist direction.
3 more elements
A mooring loop comprising:
- an outer jacket and an inner core defining a rope;
- a first controlled failure point in the rope defined by segmented ends that sever the inner core within the outer jacket, wherein there is only the outer jacket and there is no inner core in the rope at the first controlled failure point;
- a plurality of twisted yarns forming the inner core;
- a plurality of twisted yarns forming the outer jacket;
- and
- wherein some yarns of the plurality of twisted yarns forming the inner core and the plurality of yarns forming the outer jacket are configured to elongate and break at an earlier time than other yarns of the plurality of twisted yarns forming the inner core and the plurality of yarns forming the outer jacket.
3 more elements
A mooring loop comprising:
- an outer jacket and an inner core defining a rope;
- a first controlled failure point in the rope defined by segmented ends that sever the inner core within the outer jacket, wherein there is only the outer jacket and there is no inner core in the rope at the first controlled failure point;
- a plurality of twisted yarns forming the inner core;
- a plurality of twisted yarns forming the outer jacket;
- and
- wherein some yarns of the plurality of twisted yarns forming the inner core and the plurality of yarns forming the outer jacket reach maximum elongation and break at different times under loads above a yield force.
3 more elements
A mooring loop comprising:
- an outer jacket and an inner core defining a rope;
- a first controlled failure point in the rope defined by segmented ends that sever the inner core within the outer jacket, wherein there is only the outer jacket and there is no inner core in the rope at the first controlled failure point;
- a plurality of twisted yarns forming the inner core at a first braid angle in a range from 30° to 60° relative to a central axis;
- and
- a plurality of twisted yarns forming the outer jacket at a second braid angle less than that of the first braid angle.
2 more elements
Dependencies are inferred from the claim text.