Abstract:
A reinforcing structure designed for handling compression stress states when the structure is molded into a composite. The structure, specifically a wrapped cord (10, 20) with metallic filaments (12) contained therein, is suitable for both compression and tension load forces. The reinforcing structure has a core (14) comprising a plurality of essentially straight, nested filaments (12) arranged in parallel, the filaments (12) forming a line of contact with adjacent filaments (12) that extends along the length of the filaments (12). Wrapped about the core (14) is at least one helically wound wire (16).
Abstract:
A light weight, strong and flexible, braided electrical fence rope, for fences to contain livestock and keep unwanted animals out, combines in its outer braided jacket electrically conductive elements with high strength non-conductive elements in a double helix configuration. The outer braided jacket will preferably surround an inner core of non-conductive high strength elements. The high strength non-conductive elements and the physical properties of the braided rope construction provide inherent strength and flexibility properties to the fence rope. The conductive elements in the outer braided jacket are selected to provide an effective electric shock when contacted by an animal. This electric fence rope combines barrier strength and psychological deterrence to both domestic and wild animals.
Abstract:
A reinforcement strand (400) comprises a core (403) around which steel filaments (404) are twisted all with the same final lay length and direction. The steel filaments are arranged in an intermediate layer comprising N first steel filaments and an outer layer of 2N steel filaments circumferentially arranged around the intermediate layer. In the intermediate layer filaments will contact one another at a closing lay length that is determined by the number of steel filaments N in the intermediate layer, the diameter of the core and the diameter of the first steel filaments. By choosing the final lay length and direction equal to the between two and six times the closing lay length gaps will form between the intermediate layer filaments. The 2N outer layer filaments are further divided into a group of smaller (408) and a group of larger (406) diameter steel filaments.
Abstract:
A hybrid strand includes a core and outer wires arranged around the core, wherein at least a part of the outer wires is compressed, wherein the compressed outer wires include a flattened cross-sectional shape, the outer wires are composed of steel, and the core is a fiber core. A corresponding production method produces such a hybrid strand.
Abstract:
A mooring loop is provided for use with connecting a mooring line to a bollard. The mooring loop may stretch and function as a time delay fuse when excessive loads are applied to the mooring line. The mooring loop is comprised of a reactive fiber component in the shape of a continuous loop that includes a plurality of at least one of: an undrawn hydrophobic polymer fiber or a substantially undrawn hydrophobic polymer fiber. At least two jackets are in surrounding relation to portions of the reactive fiber component. The at least two jackets include respective end portions which overlap. As the mooring loop stretches, a visual indicator on an end portion of one of the jackets pulls out of and away from the end portion of the other one of the jackets. The visual indicator serves as a warning that excessive loads are being applied to the mooring line.
Abstract:
A system and method for actively damping tension members modulates the natural frequency of shape memory alloys incorporated into tension members, such as suspension ropes or cables. The frequency of the tension member can be modulated by heating the shape memory alloy, such modulation preventing potentially destructive resonance with natural exciting forces.
Abstract:
A rope structure comprising a plurality of fibers combined to form a plurality of yarns which are in turn combined to form a plurality of strands. The plurality of strands are combined using a single braid process to form the rope structure defining a void space. At least one of the fibers, the yarns, and the strands are configured substantially to reduce a volume of the void space and thereby maintain a shape of the rope structure when the rope structure is under load.
Abstract:
A securing device is provided comprised of a reactive fiber component and at least one of a terminating fiber component and an initiating fiber component. The reactive fiber component includes at least one of the following: an undrawn polymer fiber and a substantially undrawn polymer fiber, wherein the first reactive fiber component is operative to stretch responsive to a load. The terminating fiber component is in a compressed state and is operative to elongate to a length at which the terminating fiber component is operative to prevent further stretching of the first reactive fiber component responsive to the load. The initiating fiber component is operative to break responsive to a predetermined force and permit the first reactive fiber component to stretch responsive to the load.