Abstract:
PROBLEM TO BE SOLVED: To provide a steel cord for reinforcing a rubber product, useful as a reinforcing material for rubber products such as vehicle tires, industrial belts, or the like with extreme flatness and excellent fatigue resistance. SOLUTION: The steel cord of 3+7 structure has three core wires 2a-2c are arranged mutually approximately in parallel and approximately linearly in one direction in a cord cross section. Side wires 4a, 4d and 4g positioned at both end sides in a longitudinal direction in a cord cross section of a core wire group 3 have gaps between them and the core wires 2a and 2c at both end sides of the core wire group 3, side wires 4b, 4c, 4e and 4f positioned off from both end sides of the core wire group 3 are contacted with any one of the core wires 2a-2c and a side wire filling factor defined by a product of the wire diameter and the number of the side wires to length L of a closed curve obtained by sequentially connecting the centers of the adjacent side wires 4a-4g in the circumferential direction by straight lines is 70-90% to provide the steel cord with flatness and excellent fatigue resistance. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a steel cord obtained by stranding one layer of a sheath filament consisting of steel while unevenly distributing, around a plurality of core filaments as non-stranded state, doubled in parallel and improving the rubber penetrating property so as to secure the gaps among the filaments on vulcanization (so as to attach the rubber on the core filaments sufficiently). SOLUTION: Since the cross sectional longer diameter of the steel cord 10 is set as larger than the minimum cross sectional longer diameter, on covering the steel cord with rubber 16 for vulcanizing, the gap A among the sheath filaments 14 is secured even on affecting a tensional force and a pressure p from the surrounding rubber against the steel cord, and the rubber 16 can penetrate through the gaps, and the core filaments 12 are sufficiently attached with the rubber 16 and exhibit a high rubber penetration. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
A jacket for a load-bearing, lengthy body, wherein the jacket is comprised of a plurality of braid elements which, when braided, enclose at least a portion of the lengthy body, and wherein the braid element is comprised of a braided ribbon. A method of forming the jacket is also described.
Abstract:
A cable contains filaments containing carbon, surrounded by a sizing. The filaments surrounded by the sizing are covered by a matrix which is composed of a material containing at least one elastomer and/or at least one thermoplastic elastomer. The cable can be used, in particular for pulling a load, for example in a goods lift.
Abstract:
A method of manufacturing an elevator includes installing a movable supporting platform and an elevator car in the elevator hoistway; taking the elevator car into use to serve passengers and/or to transport goods; removing the elevator car from use; changing the service range of the elevator car to reach higher up in the elevator hoistway by lifting the supporting platform higher up in the elevator hoistway; and taking the elevator car back into use. The elevator is reeved to include construction-time hoisting roping, which includes one or more ropes, the longitudinal power transmission capacity of which is based at least essentially on non-metallic fibers in the longitudinal direction of the rope. In the method, guide rails to be fixed with guide rail brackets can additionally be installed by the aid of an installation device. An elevator arrangement can be used to perform the method.
Abstract:
Elevator, which comprises at least an elevator car and means for moving the elevator car, preferably along guide rails, and an overspeed governor arrangement, which comprises an overspeed governor rope, which moves according to the movement of the elevator car, and which overspeed governor rope is connected to a brake arrangement that is in connection with the elevator car such that with the overspeed governor rope force can be transmitted to the brake arrangement for shifting the brake comprised in the brake arrangement into a braking position. The rope comprises a power transmission part or a plurality of power transmission parts, for transmitting force in the longitudinal direction of the rope, which power transmission part is essentially fully of non-metallic material.
Abstract:
Steel cord is manufactured by: forming a plurality of bends, per filament length equivalent to one twist pitch, on each of filaments which constitute an outer layer sheath, with the filament length equivalent to one twist pitch being a cycle; twisting these filaments while the bends belonging to the same phase are aligned in a cord axial direction; and subjecting cord side surfaces to compression processing. As a result, flat side surface portions are formed, in which a plurality of filaments forming the outer layer sheath are positioned substantially in the same plane. The steel cord thus formed is used in reinforcement plies for pneumatic radial tires such that the reinforcement plies are laminated in a manner in which the flat side surface portions are mutually parallel.
Abstract:
A steel cord according to this invention comprises two core wires and five outer wires each having a diameter larger than that of each core wire and integrally twisted on the core wires, wherein a strand constituted by the five outer wires and the two core wires has an oblong cross-section.
Abstract:
A method for producing a steel cord from 3 to 6 steel filaments on which a coating is applied to retain the adhesion to a rubber, the steel cord being destined for use to reinforce a rubber product having a flat section, comprising the following steps of preforming steel filaments at a ratio of more than 120% by twisting them together to form an open-structure steel cord; and passing the steel cord through a flattening apparatus provided at each of outlet and inlet thereof with a roller having a groove formed in the center of the circumference thereof, and between the inlet and outlet rollers with at least a roller of which the circumferential surface is flat, to repeatedly bend the steel cord vertically or horizontally.