PURPOSE:To enhance charging efficiency and to furthermore enhance charging efficiency when a water absorbing polymer is dissolved with sulfuric acid by using plates coated with the water absorbing polymer as the plate of a lead-acid battery. CONSTITUTION:Paste prepared by kneading lead oxide, water, and dilute sulfuric acid is filled in a grid made of Pb-Ca-Sn alloy and its surface is coated with ...

PURPOSE:To enhance charging efficiency of positive and negative active materials by containing a surface active agent of perfluorosulfonate and an aromatic compound having a mercapto group in a lead-acid battery suitable for car engine starting, portable appliances, and disaster prevention. CONSTITUTION:A surface active agent of perfluorosulfonate represented by CaF2n+1SO3M (M shows an alkali meta...

PURPOSE:To enhance charging efficiency and to increase discharge time at low temperature of a lead-acid battery by containing a specified aromatic compound. CONSTITUTION:An aromatic compound having a mercapto group is contained in a lead-acid battery. By adding this compound, difference in atomic density of sulfur atoms is produced by resonance phenomenon and chemical attachment of compounds is ac...

PURPOSE: To easily splice any yarn by forming a roughened inner surface of a pipe for housing a yarn end and through which fluid flows, bringing the housed yarn into impact-contact with the inner surface, and making a state having no stranding. CONSTITUTION: A pipe 1 is attached in a yarn splicing device 20 by a screw 21 so as to be continuously moved in the axial direction, the length of a yarn 1...

PURPOSE:To obtain the compact constitution of a unit and improve the mounting performance onto a differential case and cut cost by allowing the synthesized thrust of two operating pistons due to two pressure generating means to act onto a clutch means. CONSTITUTION:If a differential revolution is generated between a differential case 2 and output shafts 5a, 5b in escape from a bad road or straight...

A yarn splicer employs aero-dynamic forces through air channels in an outer block serving sections in the inner yarn channel, which splay the yarn ends, then opposing tangential twist is applied above and below the splay, which joins the ends together. The inner block (4) has a yarn entry slot (3) into the tubular splicing channel (2). Connected to this channel are two slots with air entry at (12...

Installation utilisant l'effet laser, pour la coupe ou la vaporisation de matériaux et tissus divers, notamment pour le traitement de la carie dentaire et la découpe de la dentine, caractérisée en ce qu'elle comprend un laser spécifique de type YAG présentant notamment les caractéristiques ci-après : - une capacité d'émission d'une énergie pulsée comprise entre 0 et 250 millijoules; - cadence d...

La présente invention concerne une fixation de sécurité pour ski destinée à maintenir, de façon déclenchable, l'avant d'une chaussure 2 montée sur le ski 3.

Cette fixation est caractérisée en ce que le corps 4 de la fixation forme, avec une partie inférieure constituant une embase 5 assurant sa fixation sur le ski 2, un ensemble moulé d'une seule pièce et en ce que le corps supérieur 4 et...

A molded pharmaceutical primary closure including a thermoplastic elastomer molded into the shape of a closure and having a compression set less than about forty percent, an oxygen transmission rate of less than 500 cc/m2/day, a moisture vapor transmission rate of less than 2 gm/m2/day, and a needle penetration force of less than 2000 grams.

The invention concerns the cementaion of an oil bore hole or of similar bore holes. According to the invention, the theoretical acoustic impedance of cement is evaluated as a function of some theoretical cementaion parameters, this impedance is corrected as a function of the actual meeasured density of the cement slag during pumping, a correlation is established between with the depth as a functio...

In the rotary drilling of oil wells a drilling mud is used both to transport the cuttings up to the surface and to impose an hydrostatic pressure on the walls of the borehole. For these functions the mud must for example have an acceptable density and viscosity. It is therefore important to monitor the characteristics of the mud, and to keep them within certain limits. The technique proposed invol...

In the rotary drilling of oil wells a drilling mud is used both to transport the cuttings up to the surface and to impose an hydrostatic pressure on the walls of the borehole. For these functions the mud must for example have an acceptable density and viscosity. It is therefore important to monitor the characteristics of the mud, and to keep them within certain limits. Only recently, however, has ...

PURPOSE:To eliminate the insufficient diffusion of oxygen in heat treatment by applying an oxygen oversaturated solid solution process to a silver powder, rod or tube, and then inserting the aforesaid material in a superconducting wire material. CONSTITUTION:A superconducting powder 1 is mixed with a silver powder 2 subjected to an oxygen oversaturated solid solution process. The mixture so obtain...

PURPOSE:To stably coagulate a wire material having no internal gap by applying the constitution wherein after a sintered wire material having an oxide superconducting composition is preliminarily heated up to the predetermined temperature, the wire material is locally heated up to a temperature equal to or above a melting point and then so coagulated that a temperature gradient between a maximum t...

PURPOSE:To form a densified Bi superconducting oxide film by forming a complex oxide film composed of Bi, Sr, Ca and Cu on the surface of a substrate, doping lead in the film in lead vapor atmosphere for containing a high rate of a high Tc phase in the neighborhood of Tc at 100K, and orienting the phase along the C-axis. CONSTITUTION:First, a complex oxide film composed of bismuth, strontium, calc...

PURPOSE:To manufacture a bulky oxide superconductor of high Jc and current capacity by providing the desired number of grooves in a substrate, filling a raw material in the grooves and then subjecting the substrate to a heating and sintering process under pressure. CONSTITUTION:A substrate 1 is provided with a groove 2 for filling a raw material 3 and then the groove 2 is filled with the material ...

PURPOSE:To increase the mechanical strength of a complex wire material and prevent the damage of a reinforcing conductor in a drawing process by placing superconducting wires around the reinforcing conductor at a center in a skin pipe and subjecting the wire material to a drawing process. CONSTITUTION:As a primary complex, for example, an Al-Mg alloy rod 2 having a 5mm diameter is inserted in a Nb...

PURPOSE:To obtain a tunnel junction whose gap voltage is high and junction interface is prevented from deteriorating in superconductive property by a method wherein a precious metal layer, which is high in chemical stability and low in reactivity, is provided between a lower electrode and an insulating barrier layer, the insulating layer and an upper electrode, and onto the upside of the upper ele...

PURPOSE:To obtain a tunnel junction of high quality applicable to a superconductive device by a method wherein a lower electrode of an oxide superconductor is formed on a substrate, the surface of the lower electrode is irradiated with an ion beam with specified energy, then an insulating barrier layer is formed on the lower electrode, and a superconductor is formed on the insulating barrier layer...

Polyether ketones based on diphenols corresponding to the following general formula (I): (I) wherein R1 and R2, independently represent hydrogen, halogen, C1-C8 alkyl, C5 or C6 cycloalkyl, C6-C10 aryl or C7-C12 aralkyl; m represents an integer of from 4 to 7; R3 and R4, may be selected individually for each X and independently represent hydrogen or C1-C6 alkyl, and X represents carbon...