摘要:
A water-based chipping-resistant paint which comprises 30 to 65 weight percent of solid matter and 0.1 to 10 weight percent of low-temperature volatility solvent as a water-based dispersion substance and wherein the solid matter contains 15 to 75 weight percent of film-formable resin, 0.2 to 25 weight percent of thermoexpandable microspheres, and 20 to 80 weight percent of chipping-resistant material, facilitates vaporization of water at the time of film formation owing to mixing of the low-temperature volatility solvent, can prevent cracking and blistering of a film due to water remaining in the film and vaporization of water remaining after the film formation, and readily form a thick film owing to an expansion effect of the thermoexpandable microspheres at the stage of baking after coating, and therefore is suitable for a chipping resistant underbody coating for automobiles.
摘要:
A gas generator for air bags for use in an air bag system for safely protecting a driver and riders in a vehicle from shock from collisions. The system includes a housing (3) formed by a side cylinder (1b) with a plurality of gas exhaust openings (8) the housing being closed at its ends by an upper cap (1a) and a lower cap (2a); an igniting device (16), provided in the housing (3) at a center portion thereof; gas generating agents (6), provided in the housing (3) at a location radially outside of the igniting device (16), to be burnt to generate gas; a cooling/filtering member (7) provided in the housing (3) at a location radially outside of the gas generating agents (6) to enclose the gas generating agents and extending from the side of the upper cap (1a) to the side of the lower cap (2a); and an annular projection (50) for preventing the gas generated by the burning of the gas generating agents (6) from flowing toward an end portion of the cooling/filtering member (7). The annular projection (50) is integrally formed on at least one of the upper cap (1a) and the lower cap (2a) so as to abut with an inner peripheral surface of the cooling/filtering member (7).
摘要:
A spontaneous firing explosive composition for use in a gas generator for an airbag containing a fuel, an oxidizer, a combustion modifier, and a binder.
摘要:
A light-weight sound absorbing and insulating plastic sheet material which exhibits an excellent sound absorbing and insulating effect even in the low- and medium-pitched sound range for use in building materials and sound-proof walls and a sound absorbing and insulating plastic panel using the plastic sheet material are provided. The sound absorbing and insulating plastic sheet material of the present invention comprises a plastic sheet-formed substance and magnetic fluid-enclosing capsules contained in the sheet-formed substance. The sound absorbing and insulating plastic panel of the present invention comprises the above-mentioned sound absorbing and insulating plastic sheet material and a fiber-reinforced plastic sheet bound to at least one side of the sheet material. The sound absorbing and insulating plastic sheet material and the sound absorbing and insulating plastic panel of the present invention are excellent also in electromagnetic wave shielding effect.
摘要:
A roller chain (10) for reducing noise and vibration generated during engagement of the roller chain with a sprocket. The roller chain (10) has a plurality of inner link assemblies, each including a bushing (12) and inner plates (14) connected together and a plurality of outer link assemblies, each including a pin (16) and outer plates (18) connected together with the pins (16) extending through the bushings (12). The roller chain (10) further has rollers (20) respectively fitted on the bushings (12). The rollers (20) are each shorter than the spacing between the opposed inner plates (14). An elastic member (22) is fixed to the inner or outer peripheral surface of each roller (20). The elastic member (22) has projecting portions (24) projecting from both end faces of the roller and facing inside surfaces of the associated inner plates (14) to prevent collision of the roller (20) with the inner plates. In one embodiment, the projecting portions (24) have a shape whose thickness gradually decreases toward the inside surfaces of the inner plates (14). Each projecting portion (24) is formed so as to leave a slight clearance between it and the inside surface of the inner plate (14) opposed thereto. The roller (20) is rotatable on the bushing (12).
摘要:
A high-frequency switch in which insertion losses can be reduced and a wiring pattern for supplying control voltages can be simplified. The high-frequency switch has first through fourth ports. A transmission line is connected between each pair of the ports, thereby connecting the pairs of ports to each other. A respective capacitor is coupled between each of the ports and a corresponding one of the nodes between the respective transmission lines. A diode is connected between each of said nodes and a reference potential. A capacitor is coupled between the reference potential and each of the diodes. First through fourth control voltage terminals are connected to respective nodes between each of the diodes and the corresponding capacitors.
摘要:
A sealed chain is provided that traps lubricant and dust electrostatically. The chain includes an inner plate which is penetrated by a bushing and an outer plate which is penetrated by a pin. The inner and outer plates are connected alternatingly. Between the inner plate and the outer plate, a seal which is coaxial with the bushing and the pin, is provided in contact with the inner and outer plates. The contact area between the seal and the inner plate is smaller than the contact area between the seal and the outer plate. An annular dust hole, which is around the end of the bushing for sliding on the pin is formed on the inner part of the surface of the seal facing the inner plate. When chain bends due to, for example, winding by a sprocket, the seal slides on the inner plate thus, generating electrostatic charge. The end of the bushing 12, which slides on the pin, is encircled by the dust hole, which entraps lubricant electrostatically on sliding surfaces and dust formed by the wear of sliding surfaces.
摘要:
A composite high frequency apparatus includes a high frequency filter and a high frequency switch which have a substantially reduced size and do not require an impedance matching circuit. The apparatus includes a multilayered base having an outer surface with a plurality of diodes, an external ground electrode, an external electrode for a transmission circuit, an external electrode for a receiving circuit, an external electrode for an antenna circuit and external electrodes for control terminals located thereon. A plurality of strip lines, capacitor electrodes and an external grounding electrode are located within the multilayered base.
摘要:
Disclosed herein is a fiber capable of basic gas absorption and easy regeneration. Disclosed also herein is a process for producing said fiber. The basic gas absorptive fiber is an acrylic fiber characterized by a specific amount of nitrogen which is increased by crosslinking with hydrazine, a specific amount of carboxyl groups and amido groups resulting from modification of nitrile groups, and a specific value of tensile strength. It is prepared from acrylic fiber by crosslinking with hydrazine and subsequent hydrolysis and conversion of hydroxyl groups into carboxylic acid. It has good processability and can be used repeatedly.
摘要:
A method of testing a semiconductor device operating according to predetermined testing information. An output signal of the semiconductor device is received through a signal transmission line and a reference voltage is generated in accordance with an expected logical level of the output signal. The reference voltage is compared with a voltage of the output signal thus received and a current flow is supplied to the signal transmission line in accordance with the result. A logical level of the output signal thus received is determined and a decision is made whether the semiconductor device operates correctly.