Abstract:
A method of making a hoist cable capable of continuous resistance monitoring includes applying an electrically-insulating material to at least one strand of a wire rope such that a length of the strand is electrically insulated and an end of the strand is electrically conductive. The end of the at least one strand is joined to other strands of the wire rope such that at least two strands are electrically connected at a free end of the wire rope. A method of inspecting the hoist cable includes transmitting a first electrical signal through a first strand from a hoist drum to a free end of the wire rope and receiving the first electrical signal through a second strand at the hoist drum, the first and second strands being electrically connected at the free end. Using the first electrical signal, the resistance of the wire rope is calculated.
Abstract:
A single-strand cord rubberized in situ (C) comprising: an internal layer of the cord (CT1) comprising N1 internal thread(s), an external layer of the cord (CT3) comprising N3 external threads wound helically around the internal layer of the cord, a rubber composition (20) positioned between the internal layer of the cord and the external layer of the cord. The rubber composition (20) comprises a compound of formula (I) or (II) or a salt of this compound: in which each R1, R2, R3 and R4 group represents, independently of one another, an —OH, —O-Alkyl or —O(C)O-Alkyl group.
Abstract:
A method of making a hoist cable capable of continuous resistance monitoring includes applying an electrically-insulating material to at least one strand of a wire rope such that a length of the strand is electrically insulated and an end of the strand is electrically conductive. The end of the at least one strand is joined to other strands of the wire rope such that at least two strands are electrically connected at a free end of the wire rope. A method of inspecting the hoist cable includes transmitting a first electrical signal through a first strand from a hoist drum to a free end of the wire rope and receiving the first electrical signal through a second strand at the hoist drum, the first and second strands being electrically connected at the free end. Using the first electrical signal, the resistance of the wire rope is calculated.
Abstract:
A woven rope an inner portion comprising a plurality of multifilament fibers in the length direction of the woven rope and a jacket portion covering the inner portion. The jacket portion contains a plurality of monofilament fibers in the length direction of the woven rope and at least one multifilament fiber in the circumferential direction interwoven with the monofilament fibers in the length direction of the jacket portion. The monofilament fibers of the jacket portion form the majority of the outer surface of the woven rope.
Abstract:
A device is provided for depositing a treatment substance on the surface of a moving thread. The device comprises a tank configured to contain a liquid solution of the substance that is used to deposit the substance on the surface of the thread. The device also includes at least one nozzle having a nozzle inlet configured to receive said solution. The at least one nozzle is directed to spray the received solution towards the thread with a spray velocity in a form of jets, and the jets converge on the thread to adjust a thickness of the solution remaining on the thread by removing excess liquid entrained by the thread. The device further includes a pump that is coupled to the nozzle inlet and a treatment apparatus. The pump is configured to regulate the spray velocity according to a run speed of the thread.
Abstract:
A rope including polyethylene elongate elements oriented in the length direction of the rope, where for at least part of the elongate elements the distance of the element to a central longitudinal rope axis varies over the length of the rope. The polyethylene elongate elements including tapes of ultra-high molecular weight polyethylene, the tapes having a width to thickness ratio of at least 10 and a polymer solvent content below 0.05 wt. %. The distance of at least part of the elements to the central longitudinal rope axis varies over the length of the rope between a longitudinal line which is at most 30% from the outside of the rope and a longitudinal line which is at most 30% from the central longitudinal axis of the rope. Such a rope shows a high strength-strength ratio (the ratio between the strength under use conditions and the fresh strength of the rope).
Abstract:
Composite reinforcer (R-2) self-adhesive, by curing, to a diene rubber matrix, which can be used as reinforcing element for a tire, comprising: one or more reinforcing thread(s) (20), for example a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, for example, a polyamide 6,6, covering individually said thread or each thread or collectively several threads; a second layer (22) comprising a functionalized diene elastomer bearing functional groups selected from epoxide, carboxyl, acid anhydride and acid ester groups, for example, an epoxidized natural rubber, covering the first layer (21). Process for manufacturing such a composite reinforcer and rubber article or semi-finished product, especially a tire, incorporating such a composite reinforcer.
Abstract:
A composite wire or thread-based reinforcement is coated with rubber and may be used for reinforcing a finished rubber article, such as a tyre. The reinforcement includes one or more textile or metallic reinforcing wires or threads, and a coating rubber that coats each wire or thread. The coating rubber is formed of a rubber composition that includes at least one diene elastomer, a reinforcing filler, between 10 and 150 phr (parts by weight per hundred parts of elastomer or rubber) of a platy filler, and a crosslinking system. The coating rubber has improved water-barrier properties, thus giving the composite wire or thread-based reinforcement better protection against corrosion or ageing due to penetration of water, for example through tyre tread.
Abstract:
Composite reinforcer (R-2) capable of adhering directly to a diene rubber matrix, which can be used as reinforcing element for a tire, comprising: one or more reinforcing thread(s) (20), in particular a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, in particular a 6,6 polyimide, covering individually said thread or each thread or collectively several threads; a second layer (22) of a composition comprising a poly(p-phenylene ether) (“PPE”) and a functionalized unsaturated thermoplastic stirene (“TPS”) elastomer, the glass transition temperature of which is negative, said elastomer bearing functional groups selected from epoxide, carboxyl, acid anhydride and acid ester groups, in particular an epoxidized SBS elastomer, covering the first layer (21). Process for manufacturing a composite reinforcer and rubber article or semi-finished product, especially a tire, incorporating such a composite reinforcer.
Abstract:
Composite reinforcement (R-2) that is self-adhesive by curing to a diene rubber matrix, which can be used as reinforcing element for a tire, comprising: at least one reinforcing thread (20), for example a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, for example 6,6 polyamide, covering said thread; and a second layer (22) comprising an unsaturated thermoplastic stirene elastomer, the glass transition temperature of which is negative, for example an SBS (stirene-butadiene-stirene) copolymer, covering the first layer (21). Process for manufacturing such a composite reinforcement and rubber article or semi-finished product, especially a tire, incorporating such a composite reinforcement.