A separator of a sealed lead-acid battery consists chiefly of fine glass fiber, which contains 5-30% inorganic powder by weight and 3-20% natural pulp by weight and has a density of greater than 0.165 g/cm3. The separator prevents short circuit between the positive and negative plates.

A screw for a solid-bowl screw-type centrifuge, comprising: a screw body having a circumference, a cylindrical section and a conical section; at least one screw blade surrounding the screw body several times and forming several screw spirals; a delivery path for conveying material to be centrifuged formed between the screw spirals; blade segments arranged in the delivery path between adjacent scre...

RODILLOS QUE TIENEN ZONAS CONICAS (8,9) QUE SE EXTIENDEN DESDE LOS BORDES DE LA RANURA DE GUIA DEL HILO (3) Y ESTAN INCLINADAS CON EL FIN DE CONVERGER HACIA DICHA RANURA (3); UNA DE ESTAS SUPERFICIES CONICAS (9) SE EXTIENDE HASTA UN BORDE EXTREMO (10) DEL RODILLO Y LA OTRA (8) ESTA CONECTADA A LA BASE DE LA ZONA CON PROYECCION RADIAL (4), A FIN DE ESTABLECER CONTACTO CON LOS RODILLOS DEL TREN DE E...

Linterna de señalización, que consta de dos pilas eléctricas, primera (1) y segunda (2), ambas iguales entre sí y cada una con la capacidad necesaria para dar servicio durante un periodo estándar de funcionamiento, cuyas pilas eléctricas primera (1) y segunda (2) están conectadas eléctricamente de manera alternativa, estable y no alternada hasta su agotamiento, a un circuito electrónico de control...

Placa de construcción transparente. La placa comprende una base de politereftalato de polietilén glicol con un barniz aplicado uniformemente en la totalidad de la cara expuesta al medio ambiente, de protección contra las radiaciones ultravioletas, constituido por un copolímero que contiene un acrilato o metacrilato de metilo y un copolímero de cloruro de vinilo y alcohol vinílico con una mezcla de...

A substrate is chemical mechanical polished first with a single layer hard polishing pad and a high-selectivity slurry until a first endpoint is reached, and then with a soft polishing pad and a low-selectivity slurry until a second endpoint is reached. Dishing is reduced when low-selectivity slurry is used at the second polishing step. Low within-wafer-non-uniformity is achieved by using a single...

This invention relates to novel suspensions containing (a) 30 to 95 wt.% of water, (b) 70 to 5 wt.% of at least one silane or siloxane having at least two groups corresponding to formula (II) R4-pSi[Ot(CH2)mSiR1nX3-n]p, wherein t is 0 or 1, p is 4, 3, or 2, m is 1 to 6, n is 0 to 2, R denotes C1-C18alkyl and/or C6-C20 aryl, R1 denotes unsubstituted C1-C18 hydrocarbon or a C1-C18 hydrocarbon which ...

The organopolysiloxane particles consist of a single molecule, are crosslinked and have an average diameter of 5 to 200 nm. At least 80% of the particles have a diameter which deviates from the average diameter by not more than 30%. The particles are soluble in a solvent to the extent of at least 5% by weight.

The present invention provides a foamed styrol product and the method of producing the same. The foamed styrol product will prevent black smoking when burning, improve heat-resistance and inhibit the heat deformation. Styrene beads are mixed with an inorganic boric acid compound. The mixture is pre-expanded and then allowed to stand for aging. Thereafter, an inorganic boric acid compound and a the...

An open-cell polystyrene foam is provided which is formed from a blend of polystyrene and an ethylene-styrene interpolymer. The ethylene-styrene interpolymer functions as a cell opening agent, and is used to control the open cell content of the resulting foam, which may contain greater than 80 percent open cells. The foam is produced by an extrusion process in which carbon dioxide is used as the p...

A blank for a half tone phase shift mask comprises a transparent substrate and a half tone phase shift film provided on the transparent substrate. The half tone phase shift film has a multilayer construction in which at least a first layer capable of being etched with a chlorinated gas and a second layer capable of being etched with a fluorinated gas are disposed in this order from the side near t...

A downhole drilling machine (12) can be used for directional drilling for example for drilling through roadbeds. The drill bit (14) of the machine has an unsymmetrical face so that it drills a curved hole when it drills without being rotated. When it is rotated, it drills straight. The shank (16) of the drill bit has an unsymmetrical splined connection (18) with a sleeve (19) which in its turn has...

The invention relates to a system (1) for payment and information intended for the Internet or some other network, to which all the parties involved in the system are connected. A payment unit (2) functioning as a central unit is so arranged, in addition to functioning both as a recipient and as a payer of settlements in cash, as to function also as a recipient of information and a transmitter of ...

The invention relates to a system (1) for payment and information intended for the Internet or some other network, to which all the parties involved in the system are connected. A payment unit (2) functioning as a central unit is so arranged, in addition to functioning both as a recipient and as a payer of settlements in cash, as to function also as a recipient of information and a transmitter of ...

A downhole drilling machine (12) can be used for directional drilling for example for drilling through roadbeds. The drill bit (14) of the machine has an unsymmetrical face so that it drills a curved hole when it drills without being rotated. When it is rotated, it drills straight. The shank (16) of the drill bit has an unsymmetrical splined connection (18) with a sleeve (19) which in its turn has...

A downhole drilling machine (12) can be used for directional drilling for example for drilling through roadbeds. The drill bit (14) of the machine has an unsymmetrical face so that it drills a curved hole when it drills without being rotated. When it is rotated, it drills straight. The shank (16) of the drill bit has an unsymmetrical splined connection (18) with a sleeve (19) which in its turn has...

The present invention relates to an assembly for acquiring data during a drilling operation. The assembly comprises a drill string (3, 7, 9) including at least two measurement sensors (4, 10) located substantially at each end of a length of the said string. The assembly also comprises a processing plant (13) designed to receive, process, record and synchronise at least one signal coming from each ...

The present invention is a differential pressure fluid density production logging tool. The tool comprises an elongated housing adapted to traverse a wellbore. The housing has ports in hydraulic communication with the wellbore at spaced apart locations. The tool also comprises a differential pressure transducer having two inputs, a selective valve, and a reference tube filled with a liquid having ...

The present invention provides a method for efficiently packing proppant in an extended reach, horizontal, open hole annulus. For a given set of fixed parameters, such as the wellbore size, screen size and formation fracture pressure, the method provides a combination of critical parameter values, including the proppant density, the mixture ratio of proppant and liquid and the pump rate which will...

New bank/market organizational model whith rights reserved for future services relating to the deposit and/or withdrawal of cash between the operator or of a "mobile counter" and a customer holding a smart card and/or credit card, as well as for other services relating to the use of the "mobile counter".