A pneumatic tire 22 includes a pair of beads 30 and a carcass 32 extending on and between both beads 30. Each bead 30 includes a core 48. The core 48 includes: a main body 56 including a cord 60 extending in a circumferential direction; and a stretchable portion 58 formed from a crosslinked rubber. The stretchable portion 58 is located inward of the main body 56 in an axial direction. The stretchable portion 58 has a size with which at least one cross-section of the cord 60 can be included therein in a cross-section of the bead 30. Preferably, in the tire 22, the main body 56 includes a hard unit and a soft unit. The soft unit is located outward of the hard unit in a radial direction. A hard cord of the hard unit stretches more easily than a soft cord of the soft unit.

A wave power generation device of the present invention includes: a buoy floating on the sea; a power generator generating electrical energy or hydraulic energy; a power transmitter connecting the buoy and the power generator to each other; and a wire having a first end and a second end connected to the buoy or the power transmitter and changing in tension by motions of the buoy.

Assembly for energy absorption, comprising m number of substantially straight steel wires and n number of curved steel cords, at least one of the m number of substantially straight steel wires having a tensile strength of at least 1000 MPa and an elongation at fracture of at least 5%, at least one of the n number of curved steel cords having a tensile strength of at least 2000 MPa and an elongation at fracture of at least 2%, wherein m and n are integers m>1, n>1, and at least one of the m number of substantially straight steel wires and at least one of the n number of curved steel cords are fixed together along their longitudinal direction, and the elongation at fracture of at least one of the m number of substantially straight steel wires is at least 2% larger than the elongation at fracture of at least one of the n number of curved steel cords such that the elongation curve of the assembly comprises three zones (11, 11, 12, 12, 13, 13), wherein a first zone (11,11) is characterized by an elastic deformation of the substantially straight steel wires, a second zone (12,12) is characterized by the plastic deformation of the substantially straight steel wires and a third zone (13,13) is composed of the continued plastic deformation of the substantially straight steel wires and the elastic deformation of the curved steel cords.

A linear member for medical use having stretchability and flexibility while maintaining sufficient strength includes: an inner helical body including a plurality of helically wound wires, the inner helical body including a space portion inside, gap portions being provided in an axial direction between each wire; and an outer helical body provided outside of the inner helical body including a plurality of wires helically wound in such a manner as to form a layer along an axis of the helical body and a helical direction of the outer helical body is opposite to that of the inner helical body with gap portions being provided between each of the wires, the outer helical body being disposed to provide a multilayer structure.

A pneumatic vehicle tire having a carcass with textile carcass strength elements, a belt arranged radially outside the carcass, and a belt bandage ply of a belt bandage arranged radially outside the belt, wherein the belt bandage ply has textile cords as strength elements, which are arranged substantially parallel to one another and are embedded in elastomeric material, wherein the cords each have precisely two yarns, wherein the two yarns are yarns of polyamide 6.6 (PA 6.6), which have the same linear density and are end-twisted together to form the cord.

A multi-strand cord (50) comprises an internal layer (CI) made up of K=1 internal strand (TI) having two layers (C1, C3), with the internal layer (C1) being made up of Q internal metallic threads (F1) and the external layer (C3) being made up of N external metallic threads (F3), and an external layer (CE) made up of L>1 external strands (TE) having two layers (C1, C3) wound around the internal layer (CI), with the internal layer (C1) being made up of Q internal metallic threads (F1) and the external layer (C3) being made up of N external metallic threads (F3). The cord (50) has an energy-to-break per unit area ES145 N.Math.mm.sup.1 with $ES={.Math.}_{i=1}^{Nc}{F}_{mi}{.Math.}_{i=1}^{Nc}{A}_{ti}/\mathrm{Nc}\mathrm{Cfrag}/D$
where ${.Math.}_{i=1}^{Nc}{F}_{mi}$
is the sum of the forces at break, ${.Math.}_{i=1}^{Nc}{A}_{ti}$
is the sum of the total elongation, Cfrag is the coefficient of weakening, and D is the diameter.

A multi-strand cord (50) having a 1N structure comprises a single layer (52) of N strands (54) wound in a helix about a main axis (A), each strand (54) having one layer (56) of metal filaments (F1) and comprising M>1 metal filaments wound in a helix about an axis (B). The cord (50) has a total elongation At>8.10% and the energy-at-break indicator Er of the cord (50), defined by Er=.sub.0.sup.At(Ai)dAi where (Ai) is the tensile stress in MPa measured at the elongation Ai and dAi is the elongation such that Er is strictly greater than 52 MJ/m.sup.3.

The present invention relates to a rope assembly (1) consisting of at least one rope (2) that is made of textile fibre material and is folded back to form two substantially parallel rope portions (2, 2), wherein load distribution between the two rope portions is enabled and the rope portions are surrounded by a common sleeve (4). The rope assembly according to the invention is particularly suitable as a winch rope or as a rope for drive pulley drives, e.g., as a lift cable, in Koepe hoists and in capstans.

The invention relates to a metallic reinforcing cord (10) for tyres for vehicle wheels, comprising a plurality of metallic wires (11) twisted to one another with a single twisting pitch (P), or a single metallic wire twisted with at least one second metallic wire with a single twisting pitch, or a plurality of first metallic wires twisted to one another with a first twisting pitch to define a first strand of metallic wires and at least one second metallic wire twisted with said first strand of metallic wires with a second twisting pitch equal to or different from the first twisting pitch. The metallic reinforcing cord (10) has a part load elongation greater than or equal to 1%.

An adjustable tether for providing a connection between two points includes a flexible sheath with at least one sidewall and a plurality of openings formed through the sidewall. A conduit portion is at least partially circumscribed by the at least one sidewall. An elastic member extends from a first portion of the sheath through the conduit portion of the sheath, and out of a first opening in the sidewall. The elastic member and the flexible sheath are each elastically extendible from a retracted configuration having a retracted length to a taut configuration having a taut length. The elastic member carries at least one hook having a gape, a bend and a throat defined between the gape and the bend, the hook operable to engage a material of the sidewall adjacent the first opening to prevent or limit the hook from moving relative to the sidewall.