摘要:
An electric motor running system consists of a photovoltaic array, an inverter for inverting output voltage of the photovoltaic array to AC voltage and automatically controlled so that the frequency is changed in accordance with the output voltage of the photovoltaic array, maintaining the ratio of the voltage to the frequency at a constant value, an induction motor operated by application of the AC voltage from the inverter, and a frequency increasing circuit for increasing the output frequency of the inverter instantaneously so that the motor produces the torque larger than the load starting torque when the motor is started and further decreasing the increased output frequency of the inverter to the normal running frequency after the increased output frequency is maintained for a predetermined period of time. This construction allows the motor to be smoothly started even where a load connected to the motor is a positive displacement pump which has a large static friction torque.
摘要:
A high-octane gasoline is produced by the conversion of a light hydrocarbon containing C.sub.2 -C.sub.7 paraffins and/or C.sub.2 -C.sub.7 olefins using a crystalline aluminogallosilicate catalyst of the formula:aM.sub.2/n O bAl.sub.2 O.sub.3 Ga.sub.2 O.sub.3 cSiO.sub.2 dH.sub.2 Owherein M is a metal selected from an alkali metal, an alkaline earth metal and a mixture thereof, n is the valence of said metal, a is a positive number of (b+1).+-.3.0, b is between 1 and 6, c is between 80 and 490, d is between 1 and 200, c/(b+1) is between 40 and 70, and c/b is between 46.7-140.
摘要:
A high-octane gasoline is produced by the conversion of a light hydrocarbon containing C.sub.2 -C.sub.7 paraffins and/or C.sub.2 -C.sub.7 olefins using a crystalline aluminogallosilicate catalyst of the formula:aM.sub.2/n O bAl.sub.2 O.sub.3 Ga.sub.2 O.sub.3 cSiO.sub.2 dH.sub.2 Owherein M is a metal selected from an alkali metal, an alkaline earth metal and a mixture thereof, n is the valence of said metal, a is a positive number of (b+1).+-.3.0, b is between 1 and 6, c is between 80 and 490, d is between 1 and 200, c/(b+1) is between 40 and 70, and c/b is between 46.7-140.
摘要:
A process for the production of a water-resistant nacreous pigment, comprising hydrolyzing a zirconium or zirconyl compound, in the presence of a hypophosphite and in the presence of a metal oxide-coated mica flake pigment, whereby a hydrated zirconium oxide is deposited onto the surface of the metal oxide-coated mica flake, and a nacreous pigment comprising metal oxide-coated mica flakes coated with hydrated zirconium oxide.
摘要:
A method of adding a low-melting point metal (e.g. Pb or Bi) to liquid steel for producing a free-cutting steel in a consistent manner and in high yield of addition is disclosed. In accordance with the method, at least one member selected from said low-melting point metal and an oxide thereof, and at least one member selected from the group consisting of quick lime and a carbonaceous material are mixed in specified optimum proportions and the mixture is blown into the liquid steel through an injection lance. The liquid steel may be agitated while the mixture is added, and the appropriate conditions for the agitation of the steel are also specified.
摘要:
Method and apparatus for eliminating noise in a digitally recorded visual image wherein the proportion of picture elements in an area surrounding an objective area having a first visual level or component is determined and the objective area concluded as having the same visual level or component when the proportion is above a predetermined value. In one embodiment, both picture elements in the surrounding and objective areas are counted to determine the proportion while in another only those picture elements in the surrounding area are counted.
摘要:
In a programmable sequence controller, a memory stores an auxiliary function decoding program comprising command information and address information. A comparator circuit capable of a simultaneous comparison of a plurality of bits is operatively connected to an external numerical control device to receive auxiliary function data therefrom and connected to receive address information of the decoding program for comparing the auxiliary function data with the address information of the decoding program. A logic operation circuit included in the programmable sequence contoller is operatively connected to the comparator circuit to examine the comparison result of the comparator circuit based upon command information of the decoding program, whereby the auxiliary function data is decoded.
摘要:
A fluid-pressure regulating valve for adjusting a supply pressure from either of two air reservoirs according to the payload of a vehicle and supplying the adjusted pressure to a control pressure chamber in a pressure-proportioning relay valve, the regulating valve comprising: a valve assembly for controlling the supply pressure, said assembly including a pressure piston reciprocably disposed in the valve body and formed with an air passage through the wall on one side, a supply valve accommodated in a supply pressure chamber inside the pressure piston and seated on a valve seat provided at the lower end of the supply pressure chamber, and an exhaust valve having an exhaust valve seat engageable with the supply valve and also having an upward protrusion extended through an exhaust bore formed in the axial center of the supply valve; an output pressure chamber defined between the underside of the pressure piston and the inner wall of the valve body; a balance spring disposed above the pressure piston in communication with the atmosphere to offset the upward force developed by the output pressure to raise the pressure piston; and a loading spring disposed under the exhaust valve to bias the supply valve into the open position via the exhaust valve; said upward protrusion of the exhaust valve being linked at its end with a linkwork movable in response to the vehicle payload.
摘要:
The plug shell of the electrical connector includes the accommodation portion for accommodating the contact pin and the housing that holds the contact pin, the insertion port for inserting the contact pin and the housing into the accommodation portion, the lid member for closing the insertion port, and the hold mechanism for holding the lid member. The hold mechanism includes the pedestal, on which the lid member is placed, and the pair of hold pieces, which hold the lid member on the pedestal by pressing. The pair of hold pieces press the end portions of the lid member toward the pedestal, so that thereby a stress that urges the end portions to become distant from the pedestal is generated in the lid member.
摘要:
A battery includes current collectors for electrically connecting a power generating element contained inside of a battery case to external terminals, respectively. A caulking head of a rivet for fixing the negative current collector to a cover is contained in a engagement recess which is a space inside of a engagement receiving portion in the cover. The positive current collector is caulked to the cover via a shaft of the positive external terminal. A caulking head at a tip end of the shaft is contained in the engagement recess which is a space defined inside of the engagement receiving portion. The caulking heads do not project from a lower surface of the cover, and therefore, a clearance space defined between the power generating element and the cover is set to the minimum.