Abstract: A device for guiding a main air flow (F1) for an aircraft turbine engine, the device including a first air flowing pipe of a main air flow, the first pipe having a main axis, a plurality of ejectors of a secondary air flow located within the first pipe and configured to eject a secondary air flow and force the flow of the main air flow into the first pipe, the ejectors being distributed around the main axis, and a second air flowing pipe located at the outlet of the ejectors and including one end which is connected to one end of the first pipe, wherein the second pipe includes a narrow end.

Abstract: The system has a plurality of dishes (1) for receiving at least one sample, each dish having a perforated base (2) enabling liquid reagents or solutions to pass continuously therethrough, the dishes being superposed in a confining tube (5); a circuit (50) for the continuous outflow of the solutions originating from distinct reservoirs (17); a multipath electrovalve (15); an electric pump (13); and a member for controlling and commanding the pump (13) and the multipath electrovalve (15) in a sequential and coordinated manner.

Abstract: A cork extractor includes a fulcrum element having two parallel side walls forming a channel therebetween with an open side and a closed side, the fulcrum element extending longitudinally at one end thereof to form a rim constructed and arranged to rest against a bottle neck. Each of the walls has a longitudinal slot formed therein between a first slot wall closer to the open side and substantially parallel to the side walls, and a second slot wall closer to the closed side, with a plurality of no more than three notches formed in the second slot wall distributed over the slot from a top end of the slot to a bottom end. These slots include a first notch at the slot end closer to the rim which includes a rounded bottom, and a second slot wall portion extended toward a mid-to upper-point of the first slot wall and a second notch having a rounded bottom. A lever having a pin at one end is freely slidable within the slot and which may be received in the notches to engage a selected one of the notches.

Abstract: A cork extractor includes a fulcrum element having two parallel side walls forming a channel therebetween with an open side and a closed side, the fulcrum element extending longitudinally at one end thereof to form a rim constructed and arranged to rest against a bottle neck. Each of the walls has a longitudinal slot formed therein between a first slot wall closer to the open side and substantially parallel to the side walls, and a second slot wall closer to the closed side, with a plurality of no more than three notches formed in the second slot wall distributed over the slot from a top end of the slot to a bottom end. These slots include a first notch at the slot end closer to the rim which includes a rounded bottom, and a second slot wall portion extended toward a mid- to upper-point of the first slot wall and a second notch having a rounded bottom. A lever having a pin at one end is freely slidable within the slot and which may be received in the notches to engage a selected one of the notches.

Abstract: A sealed electrical terminal for a high-power machine, wherein the terminal includes cylindrical central rod (10) made of metal. The rod is provided at opposite ends with threaded portions (14, 16), to which there may be fastened, respectively, and end of a cable (55) extending from a power supply and an end of the coil (59) of the motor. The terminal includes at last one tubular insulating body (20, 30) fitted around the central rod, and a metal tubular cap (32) which is arranged around the at least one body and which are crimped onto the at least one body. A seal (28) is provided in order to effect a sealing between the at least one insulating body and the cap.

Abstract: Process for upgrading a sulphur-containing feedstock consisting of a hydrocarbon mixture substantially boiling in the gasoline range which process consists of subjecting the feedstock to a reforming step and subsequently to a hydrotreating step, and recovering from the hydrotreating step a product substantially boiling in the gasoline range and having increased aromaticity and decreased sulphur content.

Abstract: Process for the hydrogenation of hydrocarbon oils by contacting a hydrocarbon oil containing hydrogenatable components and having a boiling range between 130.degree. C. and 520.degree. C. with hydrogen under conditions causing substantial hydrogenation using a catalyst comprising one or more Group VIII noble metal(s) on a support wherein the support comprises a modified Y-type zeolite having a unit cell size between 24.20 and 2430 .ANG. and a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of at least 25 and recovering a product containing at least a fraction having a boiling point range between the 90%w boiling point of the feedstock and the final boiling point of the feedstock and which fraction contains on a weight basis at least 50% of the material present in the boiling point range between the 90%w boiling point of the feedstock and the final boiling point of the feedstock.

Abstract: A process is disclosed for the preparation of a lubricating base oil with a high viscosity index and a low pour point by catalytic dewaxing, which process comprises contacting at dewaxing conditions a feedstock containing at least part of the hydrocrackate of a wax-containing mineral oil fraction, which feedstock has a kinematic viscosity at 100.degree. C. of, at most, 10 mm.sup.2 /s, with a dewaxing catalyst. The invention further provides a lubricating mineral base oil comprising hydrocarbons with a boiling point of at least 250.degree. C., and having a viscosity index of at least 125 and a pour point of at most -25.degree. C.

Abstract: The invention concerns a new process for the production of primary and secondary mercaptans.The invention is based on the fact that it is possible to cause an hydrogen exchange between a thioaldehyde or a thioketone and a mercaptan with very good selectivity and conversion yields.

Abstract: Preparation of a thiophene by the action of H.sub.2 S on an organic substance containing oxygen or sulphur.The substance which is used is an unsaturated carbonyl or thiocarbonyl compound, particularly an aldehyde, thioaldehyde, ketone or thioketone. The reaction preferably takes place between 250.degree. and 500.degree. C. on a catalyst of the alumina type containing an alkali or alkaline earth oxide.The process permits the unsubstituted or substituted thiophene to be obtained with high yields and high degrees of selectivity, exceeding 70%.

Abstract: A method of manufacturing semiconductor devices comprising a layer of semiconductor material, comprising the steps of providing a strip-shaped solid substrate having a main surface and providing a solid support having a substantially horizontal surface and comprising a substantially floating liquid mass of such semiconductor material on the substantially horizontal surface, the main surface being wettable by the liquid semiconductor material. The liquid mass is contacted with the main surface of said substrate, onto which substrate the layer of semiconductor material is to be provided, the substrate is moved in its longitudinal direction along and in contact with said liquid mass so that a liquid layer of said semiconductor material is formed on said strip and taken along with it, and the liquid layer is substantially progressively solidified.

Abstract: Parallel data transmission system in which the data signals are converted to multilevel digital signals and transmitted through the channels of a frequency division multiplex system. To compensate for the delays between the data signals received in the various channels of the multiplex, a pilot signal is transmitted in each channel in the form of a signal which only has a real component. At the receiver side a filter circuit is used which comprises a first fixed coefficient part at whose input the data signal is multiplied by a component of the received pilot signal and a second part having two variable coefficients which are derived from the two components of the received pilot signal.

Abstract: A double contact, crossed roller or ball bearing assembly with roller paths inserted in supports made from another material in which each support has a single groove per row for balls or roller members and has mounted by deformation therein a single open ring formed from a bearing steel section having two enlarged portions joined by a thinner axial rib. The two bearing surfaces of each foller path are machined in the two enlarged portions of each ring.

Abstract: An arrangement for digitally processing a given number of analog channel signals, more particularly a digital multiplexer and demultiplexer provided with a number of signal paths each comprising a recursive digital filter and delay circuits arranged in cascade therewith, said filter circuits having an amplitude-frequency characteristic of a lowpass filter having a cut-off frequency which is equal to half the bandwidth of a channel signal and a phase-frequency characteristic which is such that the difference between such a phase-frequency characteristic and the phase-frequency characteristic of a reference digital filter has a sawtooth-shaped variation, the slope of the sawtooth being opposite to the slope of the cooperating delay circuit. The arrangement furthermore comprises in cascade a discrete Fourier transformer connected to the signal paths.

Abstract: Snappable separators adapted to be connected together by means of a ring in order to form a cage for rolling bearing elements.Cylindrical nesting surfaces -- one convex 9 and one concave 10 -- are intended to produce the contacts between adjacent separators on the side on which the axis of the cage of the bearing is located.An assembling ring 8 surrounds all of the separators at the periphery of the cage which is thus formed.

Abstract: A bearing having two rows of cylindrical oblique contact rollers, each row being located in an annular space defined between two annular monobloc race members, the annular spaces containing surfaces which are loaded by and form tracks for the rollers and other surfaces which are non-loaded, one of the race members having a filling orifice which extends into one of the annular spaces through one of the non-loaded surfaces and through which the rollers with or without a cage can be inserted into the space.

Abstract: A roller cage for a roller bearing assembly is made from first and second apertured separators alternately interlocked in one another. Each apertured separator has a housing provided with two apertures and a roller adapted to be received in the housing through one of the apertures where it is resiliently encased. Each housing is symmetrical about the axis of revolution of the roller and has a symmetrical center at the mid height of the axis of symmetry. The first and second separators each have two part spherical surfaces symmetrical about a plane of symmetry containing the axis of the housing and the axis of the cage with the part spherical surfaces on the first separator being convex and those of the second separator being concave. The radius of curvature of the convex surfaces is equal to the radius of the concave surface so that the two separators can interlock with each other.