摘要:
Flexible urethane foams having a low density and capable of preventing spontaneous combustion during production and storage are produced by compounding 5.0-12.0 parts by weight based on 100 parts by weight of polyhydroxylcompounds, of water and not less than 0.1 part by weight of aromatic amine antioxidant, further preferably not less than 0.01 part by weight of phosphorous acid triesters in the usual combination of polyhydroxyl compounds, polyisocyanates, water, catalysts, surfactants, foaming agent and other additives.
摘要:
In a portable exercise tracking system, a method and apparatus for measuring power output of exercise motion by a user. The system includes a wireless motion sensor and a wireless central mass unit. The wireless motion sensor detects, measures and transmits motion data associated with a first motion by the user. The central mass unit detects and measures motion data associated with a second motion by the user. The central mass unit also computes the power output of the first motion and the second motion as a function of the first motion data and the second motion data. The disclosed method and apparatus provides a more effective means of computing total power output of a user performing free body exercises.
摘要:
A resin sub-seal member (11) provided with a concave groove (16) is disposed at a region closer to a higher-pressure side region than a rubber main seal member (10) and pressure variation in a gas on a higher-pressure side is inhibited from being transmitted to the main seal member (10). Further, a variation reducing space (13) is formed between the seal members (10) and (11) to be able to reduce the pressure variation when gas leakage in the sub-seal member (11) occurs or the sub-seal member (11) responds with a delay with respect to the pressure variation. Thus, rapid change in the pressure of the gas surrounding the main seal member (10) is inhibited, occurrence of the blistering phenomenon is inhibited, and a high seal ability is achieved. The seal structure is formed by a simple structure including the seal members (10) and (11), and the variation reducing space (13).
摘要:
A pressure-reducing valve includes a housing, a pressure-reducing piston, a driving piston, and a spring mechanism. The housing is provided with a primary port and a secondary port. The pressure-reducing piston is displaceably retained in an interior of the housing. The pressure-reducing piston is displaced to control an opening degree of the primary port and configured to separate the interior of the housing into a primary-pressure space connected to the primary port and a secondary-pressure space connected to the secondary port. The driving piston is displaceably retained in the interior of the housing. The driving piston is displaced to cause the pressure-reducing piston to be displaced in association therewith and has a secondary-pressure receiving surface that receives a secondary pressure from a fluid in the secondary-pressure space. The spring mechanism is configured to exert a spring force against the secondary pressure to at least one of the pistons.
摘要:
A speed control method for a numerical control apparatus of a machine tool which includes a rotational axis or axes changing a tool angle relative to a workpiece. The method obtains a distributive shift amount of each rotational axis, at every predetermined period, on the basis of positional data of each rotational axis with respect to start and end points of a shift command and a commanded shift speed; obtains, at every predetermined period, a positional deviation of a tip of the machine tool in a direction of each linear shift axis with reference to the rotational axis, based on a difference between a rotational position of the rotational axis in a next cycle and a rotational position of the rotational axis in a present cycle; for each linear shift axis, adds the positional deviation to the corresponding distributive shift amount, and outputs a resultant value as a corrected distributive shift amount for each linear shift axis; and for each rotational axis, outputs the obtained distributive shift amount.
摘要:
A method of making a foam product including the steps of reacting an isocyanate component with a polyol component and foaming with a foaming agent to form a self-supporting intermediate foam material. The isocyanate component is present in excess of a stoichiometric quantity needed to react with the polyol component. The self-supporting intermediate foam material is then contacted with water and the self-supporting, intermediate foam material is heated to form a foam product, the water reacting with the remaining unreacted isocyanate component. The self-supporting, intermediate foam material formed by the first foaming step is rigid or semi-rigid at room temperature but it can be softened by heating to enable it to be used for deep draw molding in a successive cure molding process without cracking, splitting or being destroyed. Once the self-supporting, intermediate foam material is contacted with water or steam in the final cure molding process to react the remaining isocyanate component, the material becomes a finally cured, rigid or semi-rigid foam material which will not soften on heating. The self-supporting, intermediate foam material can be laminated with facing materials or reinforced with glass fiber--non-woven cloth or the like to give a composite panel which exhibits stiffness, heat insulation, acoustic insulation, moisture resistance and is light in weight so that it can be used for a molded ceiling or door panel in an automobile or a partition or screen for interior use.
摘要:
Polyester conjugate crimped yarns prepared by conjugate spinning(1) an A component substantially comprising polybutylene terephthalate and(2) a B component substantially comprising polyethylene terephthalateat a weight ratio of 30:70 to 70:30 in a side-by-side or eccentric sheath-core arrangement, rendered crimpable by false twisting to a degree of crimpability TC.sub.10 of 8% or more when subjected to a boiling water treatment under a load of 10 mg/de. The polyester conjugate crimped yarn can be obtained by subjecting the conjugate yarn to single-heater false twisting under the conditions which satisfy the following relations:TW.gtoreq.24380/.sqroot.De (i)185+50 [.eta.]B.gtoreq.T.gtoreq.150 (ii)whereTW is the number of false twists (T/m);De is the total denier of the yarn after false twisting;T is the temperature in 0.degree. C. of the false twister heater;[.eta.]B is the intrinsic viscosity of the B component.Stretch woven fabrics having a stretch percentage of 15% or more can be obtained by weaving the above-mentioned polyester conjugate crimped yarns.
摘要:
A thermally improved polyester weft yarn is provided by melt-spinning a blend of a polyethylene terephthalate polymer and a small amount of polymer having a glass transition temperature of at least 10.degree. C. higher than that of the polyethylene terephthalate polymer. The yarn has a break elongation of 70% to 200% and a dry heat shrinkage of +5% to -2%, and is capable of withstanding a severe heat-treatment, for example, at 245.degree. C. for 2 minutes during dipping and curing process of a tire cord fabric comprising the same. Even after such heat-treatment, the yarn shows a residual break elongation of more than 60%. Thus, the weft yarn extends uniformly, without breakage, to a toroidal shape during a tire building process, keeping warp cords at a equi-distance relation. A tire cord fabric comprising the weft yarn of the invention finds its use as the carcass in the form of single ply in a radial tire.
摘要:
Electric power is supplied to a coil (17) to drive a valve (16) for displacement by a magnetic action, thereby adjusting the opening of a valve path (43). The electric power for thus driving the valve (16) is supplied to the coil (17) through an electric conductor wire (18). The electric conductor wire (18) extends from a portion of a housing (15) that is exposed from a tank (11) to a portion of the housing (15) that accommodates the coil (17) therein. Thus, the housing (15) holds the electric conductor wire (18) as extending inside the housing (15). Since the electric conductor wire (18) is thus held as extending inside the housing (15), the electric conductor wire (18) is protected against vibration and impact given thereto from the outside. Thus, the electric conductor wire (18) has enhanced reliability in terms of resistance to vibration and impact. With the electric conductor wire (18) thus positioned within the housing (15), the housing (15) can house the electric conductor wire (18) neatly. Thus, the present invention can provide a highly reliable electromagnetic valve device which can be reduced in size and simplified in structure.
摘要:
Under emergency, a valve body displaced from a closed position to an open position in association with melting of a fuse member receives resultant of pressing forces of a primary pressure of gas guided through a primary port in an opening direction in a state where the valve body is disposed at the position closer to the open position including a fluid driving start position between the closed position and the open position. The valve body receives smaller resultant of the pressing forces of the primary pressure in the opening direction in a state where the valve body is disposed at the position closer to the closed position than to the fluid driving start position than the resultant of the pressing forces received by the valve body in the state where the valve body is disposed at the position closer to the open position including the fluid driving start position.