Russian patents diapazon from 2537700 to 2537899

2537700 - 2537749
2537750 - 2537799
2537800 - 2537849
2537850 - 2537899

	Lighting unit with display background Invention relates to lighting engineering. The first group of light sources has light-harvesting facilities placed so that they collect and convert light from the light sources to light beams of the light sources. The second group of light sources is placed in the pixel matrix, and each of them contains at least one light source controllable independently from other light sources. At least one of the above pixels is designed to emit light in the area between two of the above light beams. The light sources and light-harvesting facilities are placed in a body with coating that contains dissipating and non-dissipating areas. Light from each pixel is dissipated at the output by passing through the dissipating areas while light beams pass through the non-dissipating areas. At that at least one of the dissipating areas is placed at least two non-dissipating areas.
	Method of configuring aperiodic probing reference signal First part of parameters can be configured by radio resource control signalling, and the second part can be configured dynamically through indication in format 4 downlink control information. The second part of parameters includes not more than three parameters from the next set of parameters: cyclic shift, number of antenna ports, carrier aggregation, probing reference signal bandwidth, position in frequency range, probing reference signal hopping bandwidth, multi-session probing reference signal duration and transmission comb. The first part of parameters includes a probing reference signal configuration index and the remaining part of said set of parameters.
	Methods and apparatus for facilitating interference coordination in heterogeneous networks Method includes a step of, in case of an initiating condition, determining at a first low-power node that the first low-power node is approaching a second low-power node. The method also includes a step of sending, from the first low-power node, an entrance message to an evolved Node B (eNB) which serves the first low-power node. The method further includes a step of receiving, at the first low-power node, configuration information from the eNB in order to perform at least one measurement with respect to the second low-power node.
	Method and device, which support numerous designation of frequencies in wireless communication system Invention relates to communication equipment and can be used in mobile communication systems. A method and device for supporting numerous designations of frequencies in a wireless communication system are proposed. The method involves stages, at which functioning with several carriers is coordinated with Basic Station (BS) during the network logon procedure; at BS-compatible support of a functioning mode with several carriers the first control message is sent to BS, which contains information on each supported MS configuration with several carriers, the second control message is received from BS, which contains information on index of one or more carriers designated for functioning with several carriers; and search for information on configuration of carriers is performed, which correspond to indexes of one or more carriers appointed by BS for functioning with several carriers.
	Protecting device with electric interlock to protect upon power disconnection for used underground explosion-proof frequency converter Device contains part that controls switching and part that controls interlock. Part that controls switching contains switching lever (1), sector plate (2) to switch over the breaker and isolated change-over switch (3). Part that controls interlock contains lock button (4), lock installation plate (5) and secondary control point (6). Switching lever (1) is rigidly connected with the sector plate (2) and with isolated change-over switch (3). The lock button (4) is rigidly connected with the lock installation plate (5) and secondary control point (6). Installation pin is secured to the outside surface of the cabinet door. The lock button (4) is electrically connected with the electronic block of the programmable controller and power source. Isolated change-over switch (3) is connected with discharge resistor.
	Composite design of symmetrical and optical communications cable Design includes optical fibre in polymer ribbons, a water-repelling filler, e-shaped module with the median dividing the module into two chambers with two extreme vertices connected to the median, the main reinforcing element in this module, the first auxiliary power element in external polymer coating, a water-blocking ribbon placed along inner surface of the external shell with edges overlapping, two cords tearing the external shell, which are placed symmetrically to each other closer to the module vertices and designated as protrusions at external surface of the external shell. The invention introduces a symmetric copper pair at a polymer ribbon placed over the median of the e-shaped module and junction of its two extreme vertices at the median, at that the polymer ribbon of the symmetric pair is applied with edges overlapping.
	Submission of alarm information and performing handover using alarm information Invention relates to communication equipment. Technical results is achieved owing to receiving a digital broadcast signal containing Level 2 (L2) alarm information; detecting a physical level channel (PLP) transmitting the information on local multiplex in alarm information L2, and channel PLP transmitting the information on other multiplexes in alarm information L2, removing information on local multiplex and other multiplexes from the corresponding channels PLP, performing handover using the extracted information on other multiplexes and continuing reception of services after handover is performed using the information contained in information on other multiplexes.
	Rotor of segmental electric generator Invention relates to electrical engineering and wind energetics. Rotor of the segmental electric generator includes shaft, hub, rim and magnetic cores in form of two angle connections of straps, one is inside the other one. The straps have fixtures for securing on the rim. Technical result is improvement of the generator efficiency upon minimisation of its price as the rotor is magnetically interacts with the stator via two air gaps: outside and inside, thus reducing magnetic dispersion. Additional electromotive force increasing is due to additional rotor elements only, at that the magnetic field source is the same.
	Cable input of optical socket and method of using cable input Invention relates to construction and installation of cables of optical links and is intended for use in optical socket structures. The cable input of an optical socket comprises a housing with an elongated portion stretched outwards, having an oval cross-section with a through-hole for entry of a loop of a bent cable into the socket. A ferrule is placed in the through-hole, said ferrule having channels for the cable of said loop, each channel, at least at one end of the through-hole, having a variable cross-section on the length. In the working position, the cable input together with cables in the channels of the ferrule is tightened at all sides by a sealing element which is closed around the perimeter and made of heat shrinkable material.
	Procedure for elimination of behind-casing flows Invention relates to oil and gas production industry, namely to well-workover operations. The procedure for elimination of behind-the-casing flows includes, before running in of the casing string, performance of geophysical investigations with identification of intervals for potential behind-the-casing flows, equipment of the casing string with pipe expandable up to 24% by outside sealing components, which are placed opposite the intervals of potential flows upon running in of the casing string. When behind-the-casing flows occur and affect inner surface of the expandable pipes equipped with sealing components, they expand the above pipes within the whole range of flows thus sealing borehole annulus and preventing fluid cross-flow from one stratum to another. In order to improve quality expanded pipes are used with sealing components swellable under action of stratum fluids.
	Device for removal of icicles from building roof eaves Device comprises a vehicle with a lift and a sliding rod with a working element in the form of a striker fixed on it and connected to a magnetic core of a solenoid. The solenoid is made with the possibility to adjust its capacity. Frequency of the solenoid with the help of a feedback sensor installed on the working element after a series of strikes at eaves is automatically adjusted for its internal frequency of oscillations, which varies depending on the extent of damage and adhesion of ice formations on eaves. At the same time on the working element there is a microwave emitter, electromagnetic waves of which are directed to the area of the strike, and sufficient number of strikes in the series and their capacity are defined visually by variation of the ice damage extent.
	Erection of tunnels in structurally unstable soils with karst phenomena and/or boil processes Proposed method comprises erection of forepoling along shotwall contour. Wells of the first type are drilled along contour of shotwall with said soils, injectors are fitted in every said well to inject solidifying mortar to well bed so that first contour of forepoling is produced from at least one layer of solidifying elements and compacted soil there between. Said first-type wells are arranged so that, at injection, intersecting zones of compacted soil are formed between adjacent wells. Solidifying elements hardened, second-type wells are drilled around forepoling first contour. Solidifying mortar is injected to well walls to make, over the forepoling height, a protective massif of one or several lines of elements intersecting in horizontal. Then, third-type wells are made with their bottoms to be arranged in imaginary cylindrical or elliptic surface above forepoling zone and thereunder. Hear, solidifying mortar in injected into plies of soil located under third-type well bottoms to produce cylindrical or elliptic roof above forepoling zone and thereunder composed by one or more lies of flat-parallel elements intersecting in horizontal to make a geological massif. Soil above said roof plies is additionally compacted by drilling fourth-type wells to inject there through said solidifying mortar into natural cavities and fractures formed in geological massif formation. Mortar can be composed of stock mix containing siliceous component, gas-forming agent, liquid sodium glass and sodium oxide hydrate solution, or simple sand-cement mortar. Said mortar is injected in resilient shells prefilled in said first- and third-type wells in soils with boil processes and second-type wells in extreme lines from forepoling.
	Heating of underground hydrocarbon formations by circulating heat-transfer fluid Inventions group refers to methods and systems for hydrocarbons, hydrogen and/or other products production from various underground formations. Method of underground formation heating is means that melted salt is injected in first channel of pipe-in-pipe heater at first place. At that the melted salt injection to the first channel includes the melted salt injection in the internal pipe of the pipe-in-pipe heater, and melted salt passes through the flow switch to re-direct the flow from the internal pipe to the ring are between the internal and external pipes. The melted salt passes through the pipe-in-pipe heater in the formation to the second place at distance from the first place, at that during the melted salt passage through the pipe-in-pipe heater the heat is transferred from the melted salt to the treated area. The melted salt is removed from the pipe-in-pipe heart at specified second place.
	Plug packer and insertion tool for packer setting in well (versions) Plug packer comprises a mandrel with a collar and cup-type seal, a blind plug, O-ring with the upper and lower thrusts, slips and cones, a retainer of compressed O-ring, a buffer bushing with a springy ring placed in its bore and interacting with circular notches at the mandrel. The cones are fixed at the mandrel by shear pins and dowels. The upper dowel is connected to the cone by a stop screw so that is may be moved to the length of O-ring compression. The upper slips are joined to the sleeve connected to the buffer bushing. At the sleeve but end there is an inner cone interacting with an outer cone at the springy ring retainer. The lower slips are joined to the shoulder of a spacer sleeve matched by its inner diameter to the collar. Under skirt of the blind plug in the collar there are openings with shear pins installed in them in order to connect the mandrel with the fixing unit at the insert tool rod. The insert tools comprise a cylindrical body with a sealed cover. In five versions the body is divided by a partition wherein there is a rod of the actuating piston. At the rod placed above the partition there is a fixing unit. According to the first version the actuating piston and a dash-pot piston mounted over it at the rod divide the over-piston cavity into an air chamber and a chamber with liquid, which are interconnected by channels with plate valves. There are openings in the body wall above the partition. The actuating piston is fixed in the body by shear pins and the body cover is connected to a rope. According to other versions inside the body there is a cylinder placed concentrically with an inner collar at the butt end. The cylinder is matched to the cover so that they form a circular cavity interconnected with a pipe string or borehole space through channels. In channels there is a slide valve or a membrane with an explosive cartridge or gas generator and equipped with an igniting fuse. The actuating piston and damping piston are placed in the cylinder. A logging cable is connected to the cover. According to the sixth version there is an electric drive placed in the body head and connected to a logging cable; the drive interacts by an actuator screw with the fixing unit.
	Flare device Flare device comprises a branch pipe for gas supply with a branch pipe for liquid supply set coaxially inside and fitted by a nozzle. A cup and a cylindrical casing are attached to the gas supply branch pipe by a flange joint. Gas withdrawal branch pipes are installed radially inside the cylindrical casing in one plane, and their inner ends project above the internal surface of the cylindrical casing. A flare device is fitted by an atomiser made as a Venturi nozzle. The atomiser is attached to the cylindrical casing by a thread connection. A fairing in the form of Coanda body is installed at the atomiser and fixed by a nut. Therewith a slot for gas escape is formed between the fairing and the cup. A swirler is set between the gas supply branch pipe and the cylindrical casing in the flange joint point. The flare device output is equipped by a recirculation unit made from two coaxial pipes with inner pipe being shorter than the outer one. A tapering branch pipe is mounted at the input of the recirculation unit and an expanding branch pipe is mounted at the outlet of the recirculation unit so that annular space is provided between the ends of the inner pipe and internal surfaces of the tapering branch pipe and expanding branch pipe as well as between the inner pipe and the outer pipe. An igniter is installed between the output end of the atomiser and the input of the recirculation unit.
	Method to dehydrate landslide body Engineering-geological and hydrogeological survey is carried out to detect available landslide bodies. Then biolocation survey is performed, using the results of which they detect underground watercourses and discover their characteristics for detection of quantity and location of through filters. Afterwards on the surface of a ledge or a slope or a hillside outside the landslide body a header is arranged for collection of surface waters and some shallow watercourses. Afterwards from the foot of the ledge or the slope or the hillside they arrange a drainage mine deep into the ledge or the slope or the hillside outside the landslide body, from the surface of the ledge or the slope or the hillside they drill vertical wells until coupling with the drainage mine for through filers, couplings are arranged with connection chambers, through filters are lowered into vertical wells from the surface, and through filters are made in the form of pipes with perforated sections of holes and filtering elements made at the coupling level with underground watercourses. The header and the drainage mine are arranged with an inclination of i=0.005 towards the drain for self-flow of captured water.
	Quakeproof bridge Bridge includes intermediate and coastal supports, spans, which rest against supports via movable support parts, besides, in support parts of the span, intermediate and coastal supports there are coaxial grooves with moulding edges and a horizontal square bottom in the form of high-strength metal cells, inside of which there are metal support balls with the capability of their free movement in individual coaxial cells of the span and supports of the bridge. Between the top of supports and the bottom of the span there is a slot, and between the end of the span and the coastal support there is a gap equal to the value of the seismic horizontal movement of earth surface, which is covered with a shaped metal board, one end of which is fixed to the coastal support, and the other one freely rests onto the upper surface of the span by means of metal support balls placed inside coaxial cells of the board and the bridge span.
	Method for data transfer from well via electromagnetic communication line and device to this end Group of inventions is related to the area of well drilling and intended for transfer of well data to the surface through an electromagnetic communication line. The method for transfer of well data through an electromagnetic communication line is suggested by means of current excitation in the formation surrounding the lower part of the drill string. At that current is excited in the formation by EMF of a free-running generator connected to the string and a coaxial ring isolated from the string. Besides, an additional coaxial ring isolated from the string is introduced to the upper assembly of the pipe string and collection of alternating voltage is done from this ring as induced in the formation close to the string surface by flowing current generated by the radiating ring. At that value of the above voltage is modulated by EMF of the free-running generator controlled in compliance with coded bottomhole data. The device for implementation of the above method is also claimed.
	Concrete mixer of continuous action Concrete mixer of continuous action includes a drum made of sections assembled of two similar subsections made from an even number of at least four similar isosceles triangles alternatively connected along the perimeter of a subsection with four similar equilateral triangles so that small and large end openings are formed in the form of polygons. Two subsections are connected to a section with sides of large end openings. Sections are connected to each other throughout the length of the drum with their sides of small end openings with formation of a multiturn screw drum with mutually directed broken screw lines. Throughout the drum length there mounted is a cylindrical spring with a flat section of turns, which is equipped with a device for changing a pitch of turns by its tension or compression.
$Method of multiple hydrofracturing of formation in open hole of horizontal well$	Method of multiple hydrofracturing of formation in open hole of horizontal well Method comprises the drilling of a horizontal well bore in oil saturated part of the productive formation of the well, tripping of the pipe string into the well, the forming of perforations and fractures using the a hydrofracturing of formation in the hole of horizontal well, successively, starting from the end of far from the vertical borehole axis. During the next hydrofracturing the section, through which hydrofracturing is performed, is insulated from another part of the string with a packer. During drilling of the horizontal well bore the permeability and porosity of rocks are determined and the intervals of the productive formation with low permeability and porosity of rocks are identified, and on completing of drilling the rock hydrofracturing pressure is determined in each interval of the horizontal borehole. Then the volumes of fracturing fluid and acid for each interval of the oil saturated part of the formation with low permeability and porosity are determined, then the pipe string is moved to the interval of the productive formation nearest to the borehole bottom, with low permeability and porosity, the mechanical packer is seated, from hole mouth using the pumping unit the gelled fracturing fluid is injected into the pipe string through nozzles of the water jet tool and reshape perforations, then, not stopping injection gelled of fracturing fluid on a pipe string, construct fracture pressure applicable to the given interval of the oil saturated part of the productive formation. After 30% drop of pressure of injection of gelled fracturing fluid in the pipe string the hydrofracturing fractures are formed, for this purpose into the annular space of the well an acid is injected at the variable flow rate ensuring maintaining of pressure of injection of gelled fracturing fluid in the pipe string 10% less than the fracture pressure for the given interval of the oil saturated part of the productive formation. The packer releasing is performed and the pipe string is removed from bottomhole to the mouth into the following interval of the oil saturated part of the formation with low permeability and porosity of rocks for forming perforations and conducting of a hydrofracturing of the formation with forming and progressing of fractures.
	Device for sealing of submersible pump cable and capillary tubing at wellhead Device for sealing of submersible pump cable and capillary tubing at the wellhead comprises a hollow cylindrical case, a support washer, sealing washers, a compression element, a packing nut and a tube with a capillary tube passing through it. The tube is fixed rigidly to annular space of the well and equipped with a thrust, a sealing element, a packing washer, a cup nut and a support washer. The branch equipped with a valve is fixed rigidly to the tube.
	Method for development of oil deposits with gas cap and low formation temperature Invention is related to the development of oil deposits with a gas cap, preferably at the initial stage of an oil deposit development. The invention is applied at oil deposits with low formation temperature. The concept of the invention is as follows: wells are drilled in the areas of a gas cap location, cold water is injected to the formation within the gas cap interval in a volume sufficient to reach or maintain the required pressure and temperature conditions in result of cold water injection for the purpose of gas hydrates formation and isolation of the gas cap by these hydrates from the oil part in the deposit. At the next stage the deposit is drilled and oil is produced from the oil area at that maintaining the formation pressure and temperature at a level required for the presence of stable gas hydrates. Upon recovery of reserves from the deposit the oil part formation pressure is decreased or the formation temperature is increased in order to decompose hydrates and to produce associated gas from the gas cap.
	Hydraulic-mechanical jar Device comprises a tubular housing and a hollow shaft connected by the spline pair. The housing is made of parts, it comprises a first seal and splines at the side of the first edge, and in the middle part - the inner protrusions-anvils. The shaft is made of parts, it comprises a first piston with the first seal, the splines at the side of the first edge of the housing, the strikers between the protrusions-anvils. At the side of the second edge of the housing there is a second piston with the second seal, forming a chamber filled with pressure fluid - oil. The limiting mechanism of the fluid communication with the fluid chamber is made in the form of a belt of greater diameter of the shaft and the annular valve, in which at least one valve device is mounted, restricting fluid flow inside the chamber in one direction. The annular valve is made with a longitudinal stroke equal at least to the longitudinal stroke of the shaft relative to the spring loaded latch mechanism from the start of application of force pushing the shaft into the housing prior to installation of the latch mechanism in the operation position. The latch mechanism is located inside the spline cavity formed by the first piston with the first seal, the splines of the housing, the splines of the shaft and the first seal of the housing at the side of its spline edge. The thrust bush on the edge of the shaft shank is made with a reduced diameter and forms an annular channel between the inner surface of the tubular sleeve and the outer surface of the thrust bush.
$Flat round-sieve device for separation of tuberous roots to fractions$	Flat round-sieve device for separation of tuberous roots to fractions Flat round-sieve device for separation of tuberous roots to fractions comprises two flat round sieves, the device for removal of sorted fractions from the surface of the sieves, the boundary casing, the drive mechanism. The calibrating surfaces are made in the form of exchangeable flat sieves consisting of rings concentrically arranged with the desired spacing and wheels attached to the spokes, the hubs of which are mounted on a common vertical shaft with the possibility of changing their position in height. The round sieves are shielded by cylindrical cup-shaped casing fixed to the racks of the frame with the ability to change its position in height. On the surface of the casing and on the bottom the windows are cut for removal of the sorted fractions. On the inner side of the casing in the area of removal of coarse and medium fractions over the sieves there are freely rotating wheel shutoff devices, in front of which under the sieves the pushers of the stuck tubers (root crops) are located, made in the form of bent plates in contact with the sieve with a spring. Over each sieve at an angle smaller than the angle of friction to the path of movement of tubers the lamellar reflectors are mounted, attached with one end to the casing.
	Ceramic mixture for making facing tile Ceramic mixture for making facing tile contains the following components, wt %: kaolin 58.0-59.4; bentonite 6.0-8.0; scrap tile 0.1-1.0; phosphorite 3.0-4.0; quartz sand 14.0-16.0; bone ash 14.0-16.0.
	Method of determining physical parameters of strength of deformed structure of material medium Invention relates to the physics of material (contact) interaction and specifically to a method of determining the angle φ_d of internal friction and specific cohesion c_d of a material contact medium with a deformed structure, which receives pressure higher than gravitational pressure. The method of determining physical parameters of strength of a deformed structure of a material medium comprises determining, during laboratory shearing of samples of a medium of a non-deformed structure in compression conditions, the angle φ=φ_str of internal friction and specific cohesion c=c_str of the medium with a non-deformed structure while plotting a Coulomb-Mohr curve τ_i=p_i·tgφ_str+c_str of the limiting state of the medium under pressure p_i, where τ_i is shearing stress of the medium under compression pressure p_i. To determine the angle of internal friction of a medium with a deformed structure, formed upon achieving under a die a pressure equal to natural pressure p_str.n=p_n=(γ·h-c_str)ctgφ_str at a mark h of a solid of the natural composition thereof, the angle θ=φ_str+φ_d=arcsin[2sinφ_str/(1+sin²φ_str)] is determined. The angle of internal friction of the medium with a deformed structure is determined from the expression φ_d=θ-φ_str, and specific cohesion of the material medium with a deformed structure is determined from the relationship $с_{d} = с_{s t r} [2 - \frac{t g φ_{d}}{t g φ_{s t r}}] .$
	Method of receptor layer formation for hydrogen sulphide determination Method of formation of receptor layer on the surface of glass-like substrate of the following composition: bismuth (III) oxide 70%, molybdenum oxide (VI) 3%, germanium oxide (IV) 17-24%, boron (III) oxide 3-10% , is performed by its further successive processing with orthophospharic acid with further annealing at temperature 90°C for twenty-four hours, modification by means of solutions of phosphoromolybdenic acid and ammonium heptamolybate with ultrasonic dispersion and drying for 24 hours. After that, thermal processing is carried out at temperature 300°C for two hours.
	Concrete mixture Concrete mixture contains, wt %: portland cement 26.0-28.0; ash-slag filler 56.55-60.9; sodium ethyl silicate 1.0-1.4; polyethylene fibre cut into 5-10 mm pieces 0.05-0.1; water 12.0-14.0.
	Weight registration system for load suspended on lifting crane cable Invention refers to weight registration system for loads suspended on lifting crane cable. Weight registration system for loads suspended on lifting crane cable includes measurement system for stress metering in cable, and computer device for load weight calculation by stress in the cable. Computer device features compensation unit which models and compensates, at least partially, the effect of indirect load weight calculation by stress in cable. Compensation unit includes cable weight compensation which takes lifting cable weight into account in calculation of load weight, particularly cable length change during load lifting or lowering.
	Raw material mixture for concrete manufacturing Raw material mixture for concrete manufacturing contains, wt %: Portland cement 27.0-31.0; TPS fly ash 44.9-46.2; superplasticiser C-3 0.6-0.8, fibrous cermet 0.5-5.0; water 21.0-23.0.
	Mixture for making enamel coating Mixture for making enamel coating contains, wt %: frit 72.0-74.0; mullite 7.0-9.0; bone ash 17.0-21.0. The coating has heat resistance of 25 thermal cycles. A suspension is deposited on the surface of articles and fixed by firing at 1200°C.
	Concrete mixture Concrete mixture includes, pts.wt: white cement 1, crushed marble with particle size of 2-8 mm 1-1.5, glass fibre with length of 3-7 mm 0.1-0.15, sodium ethyl siliconate 0.1-0.15, with water to cement ratio of 0.5-0.55.
	Hard-alloy insert Hard-alloy insert includes a cylindrical liner and a working head with an end face in the form of a semi-toroid. A peculiar feature of the proposed insert is provision on the inner surface of the working head of wedge-shaped projections, the longitudinal symmetry axes of which intersect on the longitudinal axis of the liner. Apexes of wedge-shaped projections in a cross section have a rounded shape.
	Concrete mixture Concrete mixture, which includes portland cement, expanded clay, haydite sand, water, further contains asbestos of 6-7 types, which is fluffed up in advance, gypsum binder, sodium methyl siliconate or sodium ethyl siliconate, with the following ratio of components, wt %: portland cement 26.0-30.0; expanded clay with particle size of 20-40 mm 46.0-48.0; haydite sand 5.0-8.5; asbestos of 6-7 types, which is fluffed up in advance, 0.5-1.0; gypsum binder 0.5-1.0; sodium methyl siliconate or sodium ethyl siliconate1.0-1.5; water 15.0-17.0.
	Mixture for making enamel coating Mixture for making enamel coating contains, wt %: frit 63.0-67.0; mullite 11.0-15.0; feldspar 16.0-20.0.
	Mixture for making enamel coating Mixture for making enamel coating contains, wt %: frit 63.0-67.0; mullite 7.0-10.0; zircon 16.0-20.0; spodumene 4.0-6.0. The coating has heat resistance of 25 thermal cycles. Firing is carried out at 1250°C.
	Ceramic mixture for making facing tile Ceramic mixture for making facing tile contains the following components, wt %: kaolin 70.5-74.0; phosphorite 5.0-6.0; quartz sand 14.0-16.0; wollastonite 1.5-2.0; talc 5.0-6.0.
	Method of determining photodetector response time To determine response time, the working surface of the analysed photodetector is illuminated with a series of separate light pulses. Spectral power density of the electrical signal at the output of the photodetector from each light pulse is determined. The first zero of the envelope function of the spectral powder density of each received electrical signal is calculated and the response time of the analysed photodetector is determined from said values.
	Flushing assembly of drilling bit (versions) Flushing assembly of a drilling bit includes a housing with a channel and a seat having an annular bore, a head piece with a sealing element installed in the seat and a limit stop arranged in the annular bore of the seat, and a fastening assembly. Difference consists in the fact that the fastening assembly comprises a plate, a latch and a protective casing. When in a working position, a free end of the latch is arranged in the slot of the plate to interact with the side wall of the plate and fixed relative to the plate by means of a screw. The protective casing is of a cylindrical three-stage type with an internal channel; a stage of larger diameter has a possibility of being borne against the housing surface; a stage of average diameter has an external thread mating the internal thread in the seat of the flushing assembly, and presses the plate and the latch to the limit stop and the head piece with its end face, and a stage of smaller diameter ends near the end face of the head piece. The internal channel of the protective casing has screw thread.
	Crude mixture for making wall blocks Crude mixture for making wall blocks contains the following, wt %: portland cement 26.0-30.0; quartz sand 66.8-70.9; spent car tyres crushed and sieved through sieve N2.5 1.0-1.5; asbestos 1.0-1.5; gypsum binder 0.4-0.6; dibutyl phthalate-plasticised polyvinyl acetate dispersion 0.1-0.2, with water to cement ratio of 0.5-0.55.
	Bridge measuring device of parameters of bipoles Invention refers to instrumentation, automation and industrial electronics. Particularly, the device enables parameter determination for four-element bipoles or sensors with four-element equivalent circuit. Bridge measuring device of parameters of bipoles includes a serial connection of generator of a complex electric feed signal, a bridge circuit and a null indicator. A bridge circuit consists of two branches. First branch is formed by serial connection of first and second resistors and first inductance coil. A serial connection of third resistor and second inductance coil is connected parallel to the first inductance coil. Fourth resistor is connected parallel to the second inductance coil. Second bridge branch is formed with serial connection of single resistor and two terminals for connection of measurement object bipoles. First bridge branch includes seven additional resistors, and element connection is modified. First and second additional resistors are connected in series with a common output of first and second primary resistors. Second additional resistor is connected to earth. A serial circuit of second resistor, first inductance coil and third additional resistor is connected in parallel to the first additional resistor. Fourth additional resistor is connected in parallel to inductance coil. A serial circuit of third resistor, second inductance coil and fifth additional resistor is connected in parallel to the fourth additional resistor. Fourth resistor and a serial connection of sixth and seventh additional resistors are connected in parallel to the second coil. Bridge circuit output forms a common output of single resistor of the second branch and first terminal of measurement object connection, and a common output of additional sixth and seventh resistors. Both outputs are connected with differential input of zero-indicator.
	Concrete mixture Concrete mixture contains, wt %: portland cement 24.0-26.0, expanded clay with particle size of 20-40 mm 10.0-15.0, haydite sand 41.4-47.1, superplasticiser S-3 1.0-1.5, sodium ethyl siliconate or sodium methyl siliconate 1.0-1.5, lavsan fibre cut into 10-20 mm pieces 0.1-0.15, water 15.0-17.0.
	Raw material mixture for concrete production Invention relates to raw material mixture for concrete production and can be applied in industry of building materials, in particular, in manufacturing products from concretes. Raw material mixture for concrete production contains, wt %: Portland cement 24-26; ash of coal burning 71.5-73.5; polyaminotriazole fibre cut into 5-15 mm long segments 1-1.5; sodium methylsiliconate 1-1.5, with water-cement ratio 0.45-0.5.
	Method for pre-epitaxial treatment of surface of germanium substrate In a method for pre-epitaxial treatment of the surface of a germanium substrate, the process of removing the natural germanium oxide layer from the surface of the substrate and the process of removing inorganic impurities from the surface of the substrate are carried out in a single step on a hydromechanical washing apparatus using a solution of NH₄OH:H₂O₂:H₂O=1:1:40 for 2-5 minutes at 19-23°C. Passivation of the surface of the substrate is not carried out.
	Method of diagnostics of induction motor stator windings insulation Method means measurement of impedance of motor stator windings at rated speed of motor rotor rotation, and measurement of enclosure leakage currant of the induction motor together with voltage measurements on the motor body relatively to artificial zero point created by zero-sequence voltage filter connection to the power networks phases. Resistance measurements are performed by indirectly using the values of currents and voltages on the motor stator windings. The motor rotor speed is measured using the speed transmitter.
	Method of determining static and dynamic coefficient of external friction To determine the static and dynamic coefficients of external friction two samples are used: the basic and the movable. The basic sample is made with a concave spherical or cylindrical working surface which has a horizontal axis, and the ability of its rotation about this axis is provided. The movable sample is made with a flat or convex supporting surface with a radius not less than the radius of the working surface of the basic sample, it is mounted in the lower part of the working surface of the basic sample and the basic sample is rotated about the axis, measuring the angle between the line connecting the centre of the supporting surface of the movable sample with the axis of rotation of the working surface and the vertical passing through the axis of rotation, the angle φ₁ is measured, in which the movable sample slides, and the angle φ₂ in which sliding ends, the static coefficient of external friction m_st=tgφ₁ is determined, and the dynamic coefficient of external friction $m_{d y n} = k \frac{(\cos φ_{1} - \cos φ_{2})}{(\sin φ_{2} - \sin φ_{1})},$ where $k = \frac{(R - l)}{R},$ R is the radius of the working surface of the basic sample, l is the distance between the centre of gravity of the movable sample and the working surface of the basic sample.
	Method of calibrating hydrophones by comparison Single-period tonal-pulsed signals with a Gaussian envelope are used as a tonal-pulsed signal in a standard method of calibrating hydrophones by comparison.
	Acoustic-emission method to diagnose metal structures Use: for diagnostics and non-destructive check of metal structures. The substance of the invention consists in the fact that parameters of acoustic emission signals are received, recorded and assessed at the moment of structure loading, acoustic signals are digitised, they are preliminarily processed, noise is filtered, at the same time they first establish critical values of the load P_cr and regression coefficient k_rc, which characterises variation of the number of acoustic emission signals to variation of the load for a non-defect structure, then the structure is loaded to the value of the load exceeding the working load by (5…10)%, at the same time they record the number of signals and the load of the linear section of stationary acoustic emission, at the same time they record the regression coefficient k₀, afterwards the structure is loaded by cyclic load, the amplitude value of which is exceeded gradually by (2…5)%, and whenever exceeding reaches (15…20)% above the working load, loading is stopped, if in the process of control k₀<k_rc, then the structure is considered to be free of defects, and if the value k₀>k_rc the structure is rejected.
	Clock face module and clock equipped with clock face module Invention relates to a clock face module which is equipped with multiple pointers whose axles can be controlled by a clock mechanism, characterised by that the clock face module (1) consists of a housing (10), at least two separate pointers, according to which each pointer (2, 3) is equipped with its own separate concentric clock face (6, 7) and according to which at least the pointer (3), together with its axle 5 and the clock face (7), can move relative to the other first pointer (3) such that said two pointers (2, 3) never overlap with each other and the movable clock face(s) (7) always maintains a fixed orientation relative to the housing (10), according to which the upper visible part of the pointers (2, 3) and the clock faces (6, 7) is placed at one continuous surface.
	Hydrophone tract with dismantling-free inspection of its operability First at the inlet of the inspected hydrophone tract they connect an equivalent with a narrow-band spectrum of one value, and then they connect an electric equivalent with a narrow band spectrum of another value. At the outlet of the inspect tract they take the ratio of received response of supplied test signals. At the equality of this ratio with the ratio of test signals they diagnose good condition of the hydroacoustic tract.