Sergey Anatolievich
Sergey Anatolievich Alkhimov, Moscow RU
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20160060510 | POLYMER PROPPANT WITH INCREASED THERMAL RESISTANCE AND METHOD FOR PRODUCING SAME - The increased thermal strength polymer proppant and method for producing the same relate to the oil and gas production technology using materials of high-molecular compounds, especially to proppants of polymer materials with high requirements for the physical and mechanical characteristics, utilized as propping granules in the oil and gas production by a method of hydraulic fracturing. The proppant is made of a metathesis-radically cross-linked mixture of oligocyclopentadienes and methylcarboxy norbornene esters. The proppant represents microspheres having a roundness and sphericity of at least 0.9 for no less than 80% by weight, whose average size being in the range 0.25-1.1 mm and a bulk density being in the range of 0.5-0.7 g/cm | 03-03-2016 |
20160075938 | POLYMER PROPPANT MATERIAL AND METHOD FOR PRODUCING SAME - A polymer material for proppant in the form of a metathesis-radically cross-linked mixture of oligocyclopentadienes and methylcarboxy norbornene esters is obtained by mixing dicyclopentadiene with methacrylic esters and polymer stabilizers, heating the mixture to a temperature of 150-220° C., holding at said temperature for 15-360 minutes, and then cooling down to 20-50° C. A radical initiator and a catalyst are added successively to the resultant mixture of oligocyclopentadienes and methylcarboxy norbornene esters. The polymer matrix is heated to a temperature of 50-340° C., is held at this temperature for 1-360 minutes and then is cooled to room temperature. A technical result achieved by implementation of the present invention is an increase in thermal strength of the proppant material, providing a compressive strength of at least 150 MPa at a temperature of not less than 100° C. | 03-17-2016 |
20160075939 | PROPPANT MATERIAL AND METHOD FOR PRODUCING SAME - The material for proppant and method for producing the same relate to the chemistry of high-molecular weight compounds, and more particularly, to polymer materials with high requirements for physical and mechanical properties, for instance, for the production of proppants, i.e., propping granules, used in the oil and gas production by a method of hydraulic fracturing of formation. The technical result achieved by implementation of the present invention is an increase in thermal strength of the proppant material providing for a compressive strength of at least 150 MPa at a temperature of not less than 100° C. The method consists in the following. A mixture of oligocyclopentadienes is obtained by heating dicyclopentadiene (DCPD) to a temperature of 150-220° C. and holding at this temperature for 15-360 minutes. The oligomerization of dicyclopentadiene occurs. The mixture of oligomers is cooled down to 20-50° C., and polymer stabilizers, radical initiators, methacrylates and a catalyst are sequentially added thereto. The resultant polymer matrix is heated up to a temperature of 50-340° C. and is held at this temperature for 1-360 minutes, and thereafter is cooled down to room temperature. A metathesis polymerization (MP) and radical polymerization (RP) cross-linkage of the mixture of oligocyclopentadienes with methacrylic esters occurs. | 03-17-2016 |
Sergey Anatolievich Gokovatyy, Moscow RU
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20110056467 | DOUBLE BOW SYSTEM - This invention belongs to the group of projectile throwing instruments working without an explosive or a combustible propelling charge in particular to the group of projectile throwing instruments using strained hard body energy and can be used for the design and construction of a missile throwing weapon using a string—namely a bow and crossbow. | 03-10-2011 |
Sergey Anatolievich Golovatyy, Moscow RU
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20100116259 | REVERSE CROSSBOW - The invention relates sports and hunting throwing weapon. Reverse crossbow contains limbs riser | 05-13-2010 |
20100132684 | UNIT FOR FASTENING OF THE BOWSTRING THROWING DEVICES (VARIANTS) - A unit for fastening a bowstring of a throwing device the containing a first pulley mounted with a possibility of rotation about the axis of rotation of the first pulley and having the first and the second peripheral surfaces, the second pulley mounted with a possibility of rotation about the axis of rotation of the second pulley, spaced apart from the axis of rotation of the first pulley and having the first and the second peripheral surfaces, a bowstring for throwing a projectile having one end fixed to the first pulley, and other end fixed to the second pulley so the bowstring for throwing a projectile is, at least, partly wrapping the first peripheral surfaces of the first and the second pulleys, the first tension bowstring having one end fixed to the axis of rotation of the first pulley, and other end fixed to the second pulley so the first tension bowstring is, at least, partly wrapping the second peripheral surface of the second pulley, the second tension bowstring having one end fixed to the axis of rotation of the second pulley, and the other end fixed to the first pulley, so the second tension bowstring is, at least, partly wrapping the second peripheral surface of the first pulley and intersects the first tension bowstring, thus when rendering the throwing device in the cocked position the bowstring for throwing a projectile intersects the first and the second tension bowstrings. | 06-03-2010 |
20100206284 | CAM WITH SEPARATED PERIPHERAL SURFACES - This invention belongs to projectile throwing instruments that use the energy of the strained hard body and can be used for the design and construction of a missile throwing weapon—namely for a bow and crossbow. | 08-19-2010 |
20150184970 | DOUBLE BOW SYSTEM - A bow includes a string; a frame for resting a projectile, with a first wing and a second wing and a middle portion in between; a first limb attached on an end of the first wing at a distance, the first limb having a first free end and a second free end with first and second placing means for positioning the string; a second limb attached on an end of the second wing, the second limb having a first free end and a second free end with first and second placing means for positioning the string; a first deflecting means for pulling the string from the first placing means and the second placing means of the first wing, and a second deflecting means on the first wing between the middle portion and the first limb; same for the second wing. The string crosses a path of the projectile only once. | 07-02-2015 |
Sergey Anatolievich Gorohets, Edinburgh GB
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20130042057 | Hybrid Non-Volatile Memory System - A hybrid non-volatile system uses non-volatile memories based on two or more different non-volatile memory technologies in order to exploit their relative advantages. In an exemplary embodiment, the memory system includes a controller and a flash memory, where the controller has a non-volatile RAM based on an alternate technology such as FeRAM. The flash memory is used for the storage of user data and the non-volatile RAM in the controller is used for system control data. The use of an alternate non-volatile memory technology in the controller allows for a non-volatile copy of the most recent control data to be accessed more quickly as it can be updated on a bit by bit basis. In another exemplary embodiment, the alternate non-volatile memory is used as a cache where data can safely be staged prior to its being written to the memory or read back to the host. | 02-14-2013 |
Sergey Anatolievich Murikov, Magnitogorsk RU
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20130153090 | METHOD FOR THERMAL TREATMENT OF ARTICLES FROM IRON-BASED ALLOYS (VARIANTS) - The invention relates to the field of thermal processing of articles consisting of steel and iron-based alloys with a carbon content of up to 4.3% by weight. In order to reduce the duration of the technological processes used for producing articles consisting of iron-based alloys with a set structural state, the first variant of the method comprises heating the articles so as to form austenite and then cooling, which is performed under conditions which ensure the formation, in the structure of the alloy, of regions of austenite with a chemical composition similar to eutectoid with the subsequent formation in said regions of marinite and a set structural state so as to produce perlite with a different degree of dispersion and/or hardened structures. The second variant of the method comprises heating the article, which is performed under conditions which ensure the formation, in the structure of the alloy, of marinite and then cooling with the formation a set structural state so as to produce perlite with a different degree of dispersion and/or hardened structures. When implementing the methods, pulsed cooling and plastic deformation are used. | 06-20-2013 |