An acoustic method and apparatus for investigating an earth formation penetrated by a borehole are described. Acoustic transducers are mounted on a tool to accurately determine the distance between a segment of the tool and the wall of the borehole. The acoustic transducers are positioned in such manner that the stand-off distance between individual resistivity measuring electrodes in an array, wh...

PURPOSE:To largely decrease water content of sludge, by mounting a disc axially movably on a shaft portion of a screw conveyer housed rotatably in a casing including a tapered hollow portion, allowing the disc to open or close a delivery port. CONSTITUTION:In a cylindrical casing 1 including a tapered hollow portion 1a a screw conveyer 8 is housed concentrically and rotatably and a delivery port 1...

PURPOSE: To make faultless tube cop weaving possible by providing a cop end and an extension part held to the other cop end by winding so as to stop, and providing the extension part with a holding pivot having a snap fixing element coaxially with an extended cone with a ring stage. CONSTITUTION: A tube cop is provided with a cop end 1 for pulling out woof 17, and an extension part 3 wound around ...

L'invention concerne un dispositif de mammographie 1 permettant de prendre des clichés de seins de taille moyenne à forte et/ou densité moyenne à élevée, à l'aide d'un récepteur 86 du type couple film-écran renforçateur, sans augmentation de la dose absorbée par la patiente, ni dégradation de la qualité des clichés, par rapport aux clichés réalisés pour de tels seins à l'aide d'un rayonnement X...

The invention relates to a layer of polyurethane of high optical quality exhibiting the properties of an energy absorber and of resistance to scratching and abrasion, and it is characterised in that it additionally exhibits improved misting resistance properties, the polyol component employed to form the layer comprising a long polyol containing ethylene oxide blocks. The polyurethane layer i...

PURPOSE:To efficiently extract and separate objective high-concn. matter to be extracted by using two or more kinds of mixed supercritical fluids (solvent) different in critical pressure and performing extraction of substance to be extracted and gasifying the extracted fluid in order of the degree of critical pressure in the plurality of separation tanks. CONSTITUTION:In the case of using supercri...

PURPOSE:To improve stability of a catalyst and elongate its catalytic life, by forming a catalyst, wherein an L-type zeolite is used as a catalyst carrier, and halogen, alkaline earth metal and platinum are supported by this carrier. CONSTITUTION:Aromatic hydrocarbons are produced by bringing one species or not less than two species of hydrocarbons selected out of a group consisting of paraffinic,...

The invention relates to new aryloxy phenoxy acyl malonates of the general Formula I (I) a process for the preparation thereof and herbicidal compositions comprising the same. In the general Formula I R1 stands for hydrogen, halogen, trifluoromethyl, trifluoromethoxy or cyano; R2 represents hydrogen, halogen or methyl; R3 is C1-4 alkyl; and the R3 substituents may be the sa...

In a folding armchair in which the seat 3 is suspended by its rear part from the base of the tiltable backrest 2, the line which joins the pivoting pin 20 of the backrest to the suspension pin 31 on each side is oriented in a substantially horizontal fashion so that the changes in slope of the seat which occur as a result of changes in that of the backrest do not involve any horizontal displacemen...

The present invention relates to a pole consisting of a tubular element provided with a rack in order to define a series of positions for stopping one or more sliding sleeve. The tubular element 1 comprises, on its external face, a longitudinal guiding groove 2, defined by a recessed profile of the wall of the element. This groove has a flat bottom 3. A series of rectangular orifices 6 are cut in ...

Fabric covering designed to cover a baby's nappy-changing mat. This invention allows great stability on the baby's nappy-changing mat and is more comfortable for the child. It consists of a rectangular piece of fabric from which two squares 7 will be cut in order to sew together the two parts 3 to form the corners. To obtain the part which will allow the covering to be held, two triangles of fabri...

L'invention concerne une fixation de sécurité de ski qui comprend un corps 3 relié au ski, une mâchoire 5 énergisée par un dispositif de rappel élastique de la mâchoire, ainsi qu'un levier 17 qui permet à la fois l'ouverture volontaire de la mâchoire 5, et son entraînement en direction de sa position fermée.

Selon l'invention, les moyens qui permettent l'entraînement de la mâchoire vers s...

a) Printer having a printer screen with a printing head which is displaced along a printing path transversely to the direction of advance of the document. b) Printer, characterised in that it comprises a movable band 44 held so as to pass at a predetermined distance parallel to the printing-support surface 12, this band 44 being mounted so as to be displaced together with the printing head 54 when...

The invention relates to a layer of polyurethane of high optical quality exhibiting the properties of an energy absorber and of resistance to scratching and abrasion, and it is characterised in that it additionally exhibits improved misting resistance properties, the polyol component employed to form the layer comprising a long polyol containing ethylene oxide blocks. The polyurethane layer i...

A composite material of low dielectric constant, having minute hollow spheres of insulating material dispersed in a fibrous Polytetrafluoroethylene. The composite material has high mechanical strength.

PURPOSE: To enable depressurization without using a lock hopper or throttle valve by lowering the pressure of a mixture composed of the fine particles and gas discharged from a vessel operated under elevated temp. and pressure conditions by the friction in a conduit. CONSTITUTION: At the time of stripping and depressurizing the mixture composed of the fine particles and gas discharged from the ves...

PURPOSE: To obtain good dead-fold being well suited for packaging of foods in handling a bag for being boxed by using a high density polyethylene and forming a biaxially oriented film contg. a specified amt. of each a specified deformation ratio in the machine direction and in the transverse direction. CONSTITUTION: A biaxially oriented film is constituted of a single HDPE with a density of at lea...

Device for polishing an object. It comprises a disc 1 and means 2, 3 for obtaining a relative rotation movement between a face of the disc 1 and the object P; tufts of bristles 5, of substantially uniform length, are directly inserted into corresponding openings 4 provided in the face of the disc 1, while being substantially perpendicular to the latter, and the bristles are impregnated with or con...

The jet for dispensing metal and alloys uses high pressure gas to carry the metal. A container (1) holds the liquid alloy (2) passing through a calibrated nozzle (3) to produce a jet (4). The liquid is pre-heated to 140 degrees centigrade above its melting point - for example 1520 degrees centigrade. A tungsten electrode (8) is placed at a distance of 10 mm from the jet, while the second electrode...