FIELD: mining, more specifically, equipment for protection of instruments from blowouts in well. SUBSTANCE: device has pressing mechanism which under action of excessive pressure in well thrusts well walls. Pressing mechanism is made in form of bulky cylinder or instrument body with inclined recesses made on side surfaces in form of mirror image relative to their axis. Made along side surface equi...

FIELD: well drilling technology. SUBSTANCE: prior to beginning of normal process of drilling, secured to drill string, directly after bit, or as close to it as possible, is adapter. Prior to beginning of lifting process measuring device is secured in adapter. At the moment of securing of measuring device, window is opened in adapter to allow measuring device sensors to interact with well. During l...

A method for determining the direction of a borehole during drilling comprises determination of inclination angle theta and highside angle phi from gravity acceleration ( &upbar& g) measurements and determination of azimuth angle psi from magnetic field ( &upbar& B) measurements along with the calculated inclination angle theta and highside angle phi , the determinations being carried out...

A method of treating a rubber expandable tire cure bladder by forming a base release coat thereon followed by application of a lubricant topcoat. The base release coat is derived by applying a composite of an hydroxyl terminated polyorganosiloxane and an aminoorganosilane to an expanded bladder and thereafter applying a lubricant topcoat derived from selected polyorganosiloxane components. The inv...

The present invention is related to an abrasive tool comprising a core and abrasive segments attached to said core wherein said abrasive segments comprise a bond material and superabrasive grains and wherein said segments comprise at least two circumferentially spaced regions and wherein said superabrasive grains are alternately dispersed in said regions in high and low concentrations of superabra...

PURPOSE:To provide an electrical traveling vehicle which can control the speed change operation, power transmission faculty, etc., of a CVT to each proper value according to the traveling condition, etc., with the little consumed electric power and obtains the superior power faculty, as for an electrical traveling vehicle which transmits the driving power of an electric motor for traveling to driv...

PURPOSE:To improve the storage characteristic of a sealed lead-acid battery by using a positive electrode plate containing minium in active material paste, a negative electrode plate and a separator, and using a skeleton grid thinner than the thickness of the positive electrode plate. CONSTITUTION:When a positive electrode plate containing minium is used for a sealed lead-acid battery, a skeleton ...

PURPOSE:To make smooth follow-up travel by providing a travel control means which makes travel control on the basis of an amount of control operation quantity calculated by a control operation quantity calculation means for calculating the control operation quantity of a following vehicle, so as to travel in a manner to follow up with an immediately preceding vehicle. CONSTITUTION:An information t...

PURPOSE:To expedite the convergence of an acceleration slip by detecting the rotating speed of driving wheels and driven wheels to compute a slip factor and the speed and acceleration of each wheel, and controlling a brake by the slip factor and the acceleration of the driving wheels, and engine output by the speed and acceleration of the driven wheels. CONSTITUTION:A controller 30 receives the ro...

PURPOSE:To obtain the phase difference plate which lessens the change in phase difference by a change in visual point and incident angle by making the calculated value determined from the refractive indices in the phase lag axis direction, the phase advance axis direction and the thickness direction of the single layered film or laminate of double refractive films and the thickness thereof in such...

PURPOSE:To obtain the subject fluorescent material having high electroluminescence, low CIEy value of the luminescence and long life by using zinc sulfide as a matrix and compounding Cu as an activator and Cl, Au, etc., as the 1st and the 2nd co-activators. CONSTITUTION:The objective fluorescent material can be produced by using zinc sulfide as a matrix and compounding the matrix with (A) Cu as an...

A method of dressing a threaded grinding wheel for grinding crown gears. The method comprises providing a dressing tool in the form of a pinion member with the dressing tool having the same pitch as a mating pinion member of the crown gear. Rotating the dressing tool and the grinding wheel at respective velocities whereby the dressing tool and grinding wheel may run in mesh with one another. Movin...

PURPOSE:To obtain a thin liquid crystal display device. CONSTITUTION:An LSI loading flexible substrate 2 for driving signal electrode is tucked into a backlight provided with a side surface irradiating type light source, and a signal electrode side input circuit board 4 is arranged on the back of the backlight. A power source circuit board 6 is arranged on the back of the backlight, while an input...

The prodn. of recycled polyols (I) from rigid polyurethane (PU) foam comprises glycolysis of the foam with short-chain cpds. contg. PH gps. (II), followed by the addn. of epoxidised natural oil(s) (III) to the reaction mixt. at a temp. which is 10-80 deg. C. below the glycolysis temp. Also claimed is recycled polyol obtd. by this process.

There is described a method of producing a cam for a jointed camshaft by sintering a compact made from a sintering powder, which is calibrated after sintering and then subjected to quenching and tempering. To avoid extensive rework, it is suggested that the compact be pressed, sintered and calibrated corresponding to a desired contour (4), which differs from the desired contour (1) of the cam cont...

The present invention relates to a fixture and a grinding machine for grinding buttons of a rock drill bit. The fixture (18) comprises means (20, 25, 26) for holding the drill bit in a horizontal plane in a correct position relative to a grinding cup (51). The fixture comprises a linkage (24) consisting of at least two arms (25, 26). The arms (25, 26) are mutually joined by a first vertical hinge ...

The present invention relates to a fixture and a grinding machine for grinding buttons of a rock drill bit. The fixture (18) comprises means (20, 25, 26) for holding the drill bit in a horizontal plane in a correct position relative to a grinding cup (51). The fixture comprises a linkage (24) consisting of at least two arms (25, 26). The arms (25, 26) are mutually joined by a first vertical hinge ...

FIELD: polymer materials. SUBSTANCE: composition with particle size 800 mcm or less contains 100 wt parts of block copolymer with 10-60 wt % of at least one poly(monovinylaromatic hydrocarbon) block, at least one block of hydrogenated or non-hydrogenated poly(conjugated diene); 30-200 wt parts of plasticizing oil; 5-20 wt parts of resin compatible with poly(monovinylaromatic hydrocarbon) block; an...

A system, and method, for collecting and distributing information using an electronic medium, such as the Internet, and, in particular, a system and method for providing a customer care servie (CCS) to system users, in which information on a company offering products and/or services for sale, using the Internet, is distributed to system users (consumers), on request, and in which the distributed i...

PURPOSE:To easily obtain an Al stabilized superconducting wire of high quality by extrusively coating aluminium on a superconducting core material, rolling it, binding some wires into several groups, coating aluminium thereon, and by applying rolling processes in turn. CONSTITUTION:After a Nb-Ti billet 1 is forged and face-cut, it is hot-extruded into a Nb-Ti pin material 2. Al is extrusively coat...