Abstract:
PURPOSE:To obtain the subject blend, excellent in physical strength and abrasion and friction characteristics, further adhesion and decorative properties and useful as sealing materials for various packings by kneading ultrahigh-molecular weight polyethylene with a rubber compound having solubility different from that of the ultrahigh-molecular weight polyethylene at the softening point or above of the ultrahigh-molecular weight polyethylene. CONSTITUTION:The objective composition obtained by kneading, e.g., (A) 100 pts.wt. ultrahigh-molecular weight polyethylene having 800000-5000000 molecular weight with (B) 1-100 pts.wt. rubber compound containing carbon black (e.g., styrene-based or butadiene-based rubber) in the presence of (C) a radical polymerization initiator (e.g., thiazole-based, guanidine-based, thiuram-based initiator or zinc flower) at >=130 deg.C.
Abstract:
PURPOSE:To improve the wear resistance of a tyre especially and obtain the same function as that of super hard alloy by forming a spike pin for a tyre constituted so as not to damage a road surface through resinification of its earthing part with the mixture of a styrene series rubber and super high molecular weight polyethylene. CONSTITUTION:A spike pin 1 for a tyre is constituted so as not to damage a road surface by resinifying the part in contact with the road surface. In this case, the spike pin 1 for the tyre is formed with the mixture of a styrene series rubber and super high molecular weight polyethylene. The styrene series rubber is set by the rate of 10-90%, desirably 25-75% and the super high molecular weight polyethylene by the rate of 90-10%, desirably 75-25%. The combined styrene amount of the styrene series rubber is set by the rate of 10-70%, desirably 15-50%. Further, the molecular weight of super high molecular weight polyethylene is set by the rate of about 500,000, or more desirably about 800,000-5,000,000.
Abstract:
PURPOSE:To improve the abrasion resistance and friction resistance of a styrene rubber, by kneading the rubber with an ultrahigh-MW polyethylene at a temperature >= the softening point of the polyethylene. CONSTITUTION:A styrene rubber and an ultrahigh-MW polyethylene of an MW of 500000-5000000 are used in a ratio of 1-99:99-1 (e.g., 64:40). The polyethylene is preheated to a temperature >= its softening point, e.g., 135 deg.C under agitation, and mixed with a styrene rubber of a combined styrene content of 10-70% and, optionally, additives such as carbon black. The obtained mixture is kneaded at 140-180 deg.C to effect the dispersion of the both and the crosslinking of the styrene rubber. The obtained composition can be molded into spike pins, rubber rolls, etc.
Abstract:
PURPOSE:The title sealing material having low compression set, low chlorine deterioration and suited for use in a heat-regenerative water tank, etc., obtained by using a thermoplastic styrene elastomer crosslinked with both an olefin and a specified silane compound as the principal component. CONSTITUTION:A thermoplastic styrene elastomer (e.g., styrene/ethylene/butylene/styrene block copolymer) is crosslinked with a low-MW olefin polymer (e.g., liquid polybutadiene) and a silane compound of the formula: RSiR'nYn (wherein R is ethylenically unsaturated hydrocarbyl or the like, R' is an aliphatic saturated hydrocarbyl, Y is a hydrolyzable organic group and n is 0, 1 or 2), e.g., CH=CHSi(OC2H5)2. The purpose heat-resistant thermoplastic sealing material having low chlorine deterioration and a compression set (50% compression X22hr)
Abstract:
PROBLEM TO BE SOLVED: To obtain a manufacturing method for a sealing/pumping-up device capable of enduring the change in environmental temperature, while maintaining the quality of a sealing agent. SOLUTION: Since the liquid temperature of the sealing agent 36 is in the range of 40-90°C, the sealing agent 36 is not deteriorated by heat. Additionally, since the liquid temperature at the time of the charge of the sealing agent is 40°C or higher, a volume change is small in comparison with the volume of the sealing agent 36 at the time of the charge of the agent even if the temperature of the atmosphere in the trunk of a vehicle is, for example, in the range of 80-90°C. This prevents the damage to a sealant. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To obtain a sealant pump-up apparatus of a tire for enabling a user to know an operation state. SOLUTION: A display part 30 constituted of six light emitting diodes 32A-32F is provided to a lid member 94 and respectively corresponds to the "start" (the start of the injection) of a sealant, "during the injection of the sealant", the "start" (the start of the supply) of compressed air, "during the supply of compressed air" and the "completion" (the completion of the supply of compressed air). A control circuit allows the corresponding light emitting diode 32 to light when the sealant pump-up apparatus 80 is set to either one of the above mentioned states. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce an amount of a sealant remaining in the inner side of a pneumatic tire without being consumed for repairing a punctured hole after it is injected into the inner side of the pneumatic tire. SOLUTION: In the sealing apparatus 10, an air compressor 14 and a liquid supply pump 20 supply compressed air and a sealant 16 to a foam generator 32, and the foam generator 32 mixes the sealant 16 and the compressed air in the mixing passage 46 to make the sealant 16 be in a foaming state and injects the foaming sealant 16 into the inner side of the pneumatic tire 70. As a result, it is possible to inject the foaming sealant 16 into the inner side of the pneumatic tire 70 while the sealant 16 becoming from the liquid state to the foaming state representing the mixture of many bubbles and expanding its apparent volume. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To operate a sealant injecting means and an air pressure-feeding means by a current having a value approximately equal to a rated current value which can be supplied from a battery of a vehicle, by including a circuit breaker operated with having priority over a circuit breaker on a vehicle side when an overcurrent passes. SOLUTION: The pumping-up device 30 uses the electromagnetic circuit breaker 76 as an overcurrent breaking means for breaking electric power supply to a power supply circuit 78 when the overcurrent passes through the power supply circuit 78 which is connected with the battery of the vehicle. In the circuit breaker 76, detection accuracy and responsiveness with respect to the the overcurrent can be set easily compared with a fuse type circuit breaker, so that dispersion of the detection accuracy and responsiveness among products is small. Therefore, even if the rated current value of the circuit breaker 76 is set to be a value approximately equal to or slightly lower than the rated current value of the circuit breaker on the vehicle side, the circuit breaker 76 can be operated surely and at timing earlier than the circuit breaker on the vehicle side. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain a support body and a pneumatic run-flat tire improving resistance property of a support part relative to the impact. SOLUTION: When large impact is applied at the time of run-flat traveling, a large load is acted on the end part side of the support part 26A from a projecting part 26A of the support part 26. However, since a reinforcing part 27 is extended from the outside end part in the tire axial direction of a flange part 26D toward the inside in the tire radial direction, the end part side of the support part 26 is reinforced and the generation of the crack from the end part side of the support part 26 is suppressed. In this way, the resistance of the support part 26 can be improved by enhancing the rigidity relative to the load at the time of impact by the reinforcing part 27. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To ensure that the interior of a tire valve is trouble-free by preventing a solidified matter of a latex from being extracted from a container. SOLUTION: This cylindrical container holds a fluid flat tire sealant and inside the container, are arranged a porous filter medium and a push bar for forcing the filter medium into the container. The solidified matter of the flat tire sealant is captured by the filter medium and the sealant passing through the filter medium is charged into the tire valve from an extraction aperture. COPYRIGHT: (C)2006,JPO&NCIPI