baber/WOPTO huggingface dataset:
Patent RU-2042596-C1 (RU)
Title: Belt conveyor fire protection device
Inventor: GUREVICH MOISEJ M
IPC: B65G43/02
Filed: 1992-11-16
Granted: 1995-08-27
Abstract: FIELD: mining industry. SUBSTANCE: belt conveyor fire protection device has easily fusible cord made of special material (for instance, savylene) whose melting temperature is in range of 80 and 120 C. Cord is stretched along conveyor flight for constant contact with axles of roller supports. One end of cord is fixed through tensioning device on conveyor housing, and other end is connected with spring-loaded light- sound alarm switch holding the switch in initial position at no fire. Green pilot lamp indicates that signalling system is in good repair. Device of simple design provides high reliability of protection owing to the fact that temperature of each roller support over entire length of conveyor is constantly monitored. EFFECT: enhanced operation reliability. 2 cl, 1 dwg
Patent RU-2074249-C1 (RU)
Title: Method of preparing enzyme hydrolyzate from the web-footed muscle tissue and nutrient medium "celat" for eucaryotic cell cultivation
Inventor: ERMISHINA INNA G
IPC: C12N1/20
Filed: 1992-11-18
Granted: 1997-02-27
Abstract: FIELD: medicinal biotechnology, veterinary science. SUBSTANCE: method involves milling web-footed muscle tissue, mixing with distilled water at mass ratio = 1:2, hydrolysis in the presence of enzyme-containing web-footed organs at 40-42 C, at pH = 7.6-7.8 for 4-5 days in the presence of chloroform followed by heating biomass at 80-90 C for 5-10 min, precipitation of high-molecular compounds firstly in the presence of 20-22% calcium chloride solution and then - at protein isoelectric point, filtration and drying preparation. Nutrient medium "Celat" for eucaryotic cell cultivation has enzyme hydrolyzate of web-footed muscle tissue, cattle serum blood and Henx solution at the following ratio of components, vol.%: enzyme hydrolyzate of web-footed muscle tissue 0.15-0.20; cattle serum blood 5-10, and Henx solution - the rest. EFFECT: improved method of preparing. 2 cl, 4 tbl
Patent RU-2065368-C1 (RU)
Title: Vehicle door
Inventor: BARBASH YURIJ L
IPC: B61D19/00
Filed: 1992-11-27
Granted: 1996-08-20
Abstract: FIELD: transport engineering; underground car doors. SUBSTANCE: vehicle door has door panel with locking arrangements fitted in body wall aperture. Each locking arrangement is made in form of turnable handle hinge-coupled with locking bar by means of intermediate link. Each locking arrangement has nut rigidly secured on door panel and bolt engaging with nut. Turnable handle is secured on body panel. Made on body panel is hole for bolt head, diameter of hole exceeding diameter of bolt head. Locking bar engages with bolt head. Locking bar is made in form of fork. EFFECT: enhanced reliability of locking. 3 cl, 2 dwg
Patent RU-2033779-C1 (RU)
Inventor: SEMENOV ALEKSANDR G
IPC: A61G5/04
Filed: 1992-12-09
Granted: 1995-04-30
Abstract: FIELD: transport. SUBSTANCE: chair has seat with backrest and armrests, chassis with electric drive and control member arranged in armrest. Hinge-mounted on rear wall of backrest is collapsible member which forms, when hinged down, an additional seat or load platform. Collapsible member arranged at one level with seat can be furnished with side boards whose height, with member hinged down, is equal to difference in levels of arrangement of upper part of armrest and additional seat. Armrests have upper movable part and lower fixed part connected near backrest by joint with vertical axle and lock to provide turning of armrest through 180 degrees and fixing it in initial and opposite positions. EFFECT: enlarged operating capabilities. 3 cl, 6 dwg
Patent RU-2043845-C1 (RU)
Title: Plant for the metal semicontinuous casting
Inventor: UGODNIKOV ALEKSANDR L
IPC: B22D11/14
Filed: 1993-02-08
Granted: 1995-09-20
Abstract: FIELD: metallurgy. SUBSTANCE: plant for the metal semicontinuous casting includes a mould, a housing, a stool, the mechanism for withdrawing the stool together with the ingot, the guideways for the stool as well as a drive for the guideway canting. In order to enhance the quality of the continuously cast ingots made of high-alloy steel and complexly-alloyed steel which are inclined to cracking, pipes connected with the water-inlet and water-outlet branch pipes are mounted according to the perimeter of the inside surface of the housing along the guideways. The distance from the facets of the working reservoir of the mould to the pipe surface makes up 0.1-0.5 of the width of the working reservoir of the mould. EFFECT: enhanced quality of the continuously cast ingots. 2 dwg, 1 tbl
Patent RU-2073990-C1 (RU)
Inventor: DZHARULLAEV DZHARULLA S
IPC: A23N1/00
Filed: 1993-05-24
Granted: 1997-02-27
Abstract: Использование: в пищевой промышленности для получения соков из семечковых плодов, в частности яблочного сока. Сущность изобретения: устройство содержит моечную машину, инспекционный транспортер, пресс, фильтрующий элемент и наполнитель. Устройство снабжено СВЧ-установкой, установленной между инспекционным транспортером и прессом. 1 з.п. ф-лы.
Patent RU-2063708-C1 (RU)
Title: Method for surgically treating double-sided injuries of respiration organs
Inventor: IVANOV ALEKSEJ V
IPC: A61B17/00
Filed: 1993-02-07
Granted: 1996-07-20
Abstract: FIELD: medicine. SUBSTANCE: method involves performing single-sided anterior intercostal thoracotomy along the fourth and fifth intercostal space. Mediastinal pleurae are sequentially dissected along the diaphragmal nerves and in front of them. To expose the opposite pleura, anterior intercostal space fat is separated. EFFECT: enhanced effectiveness in treating double-sided injuries.
Patent RU-2072065-C1 (RU)
Inventor: ZAK LEV M
IPC: F26B3/347
Filed: 1993-09-17
Granted: 1997-01-20
Abstract: Использование: в области сушки и может найти применение в пищевой промышленности. Сущность изобретения: сушилка дополнительно содержит устройство 8, 9 подачи и удаления соответственно теплоносителя и наборы запредельных волноводов 10, 11, причем устройство 8 подачи подключено к камере 1 через первый набор запредельных волноводов 10, а устройство 9 удаления теплоносителя выполнено в виде блока вентиляторов, подключенных к камере 1 через второй набор запредельных волноводов 11, при этом камера 1 имеет форму прямоугольного параллелепипеда и выполнена в виде резонатора. 1 з.п. ф-лы, 1 ил.
Patent RU-2071780-C1 (RU)
Title: Method of treatment of medicinal esophago-gingivo-stomatitis
Inventor: ASAFOV ALEKSANDR V
IPC: A61K38/16
Filed: 1993-10-11
Granted: 1997-01-20
Abstract: FIELD: medicine, stomatology. SUBSTANCE: method involves application of polydane solution on the damaged mucous sites according to the proposed scheme. EFFECT: high effectiveness of method, combination with the basic treatment course. 2 tbl
Patent RU-2048111-C1 (RU)
Inventor: KOPYLENKO LILIYA R
IPC: A23B4/14
Filed: 1993-12-29
Granted: 1995-11-20
Abstract: FIELD: fish industry; tinning of fish and fish products, mostly caviar. SUBSTANCE: claimed composition comprises cooking salt, potassium bicarbonate and, additionally, organic acid or its salt in the amount from 1.0% to 3.0% and from 1.5% to 4.0% respectively. In addition, 1-2% of an antiseptic is introduced. EFFECT: wider range of fish products and rational utilization of raw materials. 2 cl
Patent RU-2054804-C1 (RU)
Inventor: CHEREVKOV KONSTANTIN V
IPC: H04B7/185
Filed: 1993-12-27
Granted: 1996-02-20
Abstract: FIELD: radio engineering. SUBSTANCE: ground part of satellite communication system has information input/output unit 1, controlled oscillator 2, phase modulator 3, upper frequency bound clipper 4, clipper 5, power amplifier 6, antenna 7, preliminary filtration and amplification unit 8, phase demodulator 9, switches 10 and 21, unit 11 for switching operation modes of ground station when control signals and information from users are transmitted. In addition device has connection request packet generator 19, connection frequency converter 20. Relay station has N circuits, each of them has antenna 12, preliminary filtration and amplification unit 13, N pole filters 14, N attenuators 15, adder 16, stepping-up frequency converter 17, power amplifier 18, stepping-down frequency converter 23, oscillator 22. EFFECT: increased functional capabilities. 2 dwg
Patent RU-2053991-C1 (RU)
Title: Способ получения винилхлорида каталитическим пиролизом дихлорэтана
Inventor: VASILEVA NELLI A
IPC: C07C21/06
Filed: 1994-01-31
Granted: 1996-02-10
Abstract: Использование: как полупродукт в промышленности основного органического синтеза. Сущность изобретения: дегидрохлорирование 1, 2-дихлорэтана в присутствии гетерогенного катализатора. Условия процесса: температура 350 - 490 o С, пропускание с временем контакта 0,1 - 5,0 с смеси паров ДХЭ с инертным газом (аргон или азот) в объемном соотношении N 2  : ДХЭ = (0,0 - 2,0): 1,0 через реактор, заполненный катализатором в соотношении - объем катализатора: объем реактора (0,15 - 1,0): 1,0. Периодически вместо подачи ДХЭ реактор продувают водородом и отношение продолжительности подачи ДХЭ к продолжительности подачи водорода (0,5 - 10): 1,0. В качестве катализатора используют пористый углеграфитовый материал, в котором слои углерода ориентированы в пространстве в виде граней многогранника с выходом на поверхность базальных плоскостей, имеющий следующие структурные характеристики: межплоскостное расстояние d002 - 0,34 - 0,349 нм, размер микрокристаллитов по направлению "a" La = 3,0 - 12 нм, по направлению "c" Lc = 3,0 - 8 нм, удельная поверхность 12 - 650 м 2 /г. При этом увеличивается производительность процесса и выход ВХ. 5 з. п. ф-лы, 5 табл.
Patent RU-2055778-C1 (RU)
Inventor: ZHIDOVETSKIJ KAZIMIR M
IPC: B64C5/02
Filed: 1994-03-22
Granted: 1996-03-10
Abstract: Сущность изобретения: корпус самолета выполнен из носового функционального модуля 7, фюзеляжа 1 и несущего модуля, содержащего крыло 2, двигатели 6, хвостовую часть фюзеляжа и хвостовое оперение 3. Двигатели 6 размещены на фюзеляже сверху, расположены за носовым модулем 7 и объединены в единый конструктивный модуль, расположенный от носа фюзеляжа в диапазоне 0,417 - 0,741 ± 0,02 от общей длины фюзеляжа. Носовой модуль от носа фюзеляжа расположен в пределах до 0,417 - 0,484 длины фюзеляжа и без изменения внешних обводов и размеров фюзеляжа и всего самолета в целом выполнен или в виде пассажирской кабины 8 самолета бизнес-класса, или в виде кабины двухместного учебного самолета, или в виде кабины легкого боевого самолета. 8 з. п. ф-лы, 9 ил.
Patent RU-2064629-C1 (RU)
Title: Illuminated fountain
Inventor: SOLODOVNIKOV VLADIMIR ILICH
IPC: F21S10/00
Filed: 1994-04-26
Granted: 1996-07-27
Abstract: FIELD: lighting engineering. SUBSTANCE: illuminated fountain is related to equipment for creation of decorative effects. It has reservoir to form jets with smooth internal surface provided with nozzles, light device presenting source of light built into reflector which is joined to reservoir and forms with it joint closed space. Insulation between light device and reservoir is manufactured from color light filters and transparent glass. EFFECT: simplified design, reduced manufacturing cost. 1 dwg
Patent RU-2056556-C1 (RU)
Title: Blade wheel of hydrodynamic transmission
Inventor: VYBORNOV EDUARD P
IPC: F16H41/28
Filed: 1994-04-27
Granted: 1996-03-20
Abstract: FIELD: transport facilities. SUBSTANCE: vane wheel has a cast-in cup and circular baffle, with sheet blades placed between them. The blades have bosses on the edges, located inside the cup. Volumetric blades made integral with the cup and baffle are positioned in the gaps between the cast blades. Provision of volumetric blades ensures a tight coupling of the cup with the baffle, which provides a stable position of the sheet blades between them. EFFECT: enhanced reliability. 3 cl, 8 dwg
Patent RU-2068445-C1 (RU)
Title: Lubricant coating for rail
Inventor: EVDOKIMOV YURIJ A
IPC: C10N30/06
Filed: 1994-06-07
Granted: 1996-10-27
Abstract: FIELD: lubricant materials. SUBSTANCE: coating has, wt.-%: graphite 20; sodium chloride aqueous solution 10-14, and water glass - the rest. EFFECT: enhanced quality of coating. 1 tbl
Patent RU-2106068-C1 (RU)
Inventor: BELJAEV VLADIMIR SERGEEVICH
IPC: H04L27/22
Filed: 1994-07-08
Granted: 1998-02-27
Abstract: FIELD: radio communication, wire lines which provide phase modulation of carrier frequency. SUBSTANCE: method involves generation of two phase-spaced channels so that detected output voltage in channel phase detectors are in opposite polarity and total output voltage of demodulator is generated by means of their relative subtraction in subtraction unit. This results in addition of absolute values of relatively inverse channel signals after subtraction unit at output of demodulator and signal voltage is increased, while channel signals of same polarity are added in their absolute value after subtraction unit at output of demodulator and signal voltage is increased, while noise level is decreased. This increases signal- noise ratio and provides possibility to detect noise receiving errors caused by alternation in polarity of arbitrary detected voltage of channel phase detector. Said errors are related to single-polarity output voltage levels of channel phase detectors. In addition method provides possibility to test quality of communication channel. EFFECT: increased stability to noise. 1 dwg
Patent RU-2139181-C1 (RU)
Inventor: DEHVID A SHELDON
IPC: B24D3/14
Filed: 1994-07-28
Granted: 1999-10-10
Abstract: FIELD: manufacture of abrasive grinding wheels with vitreous binder. SUBSTANCE: part of abrasive dust includes aluminium oxide sol-gel. The grinding wheel possesses improved characteristics at an unchanged shape. Use is made of a binder compound, which enhances the safety of the apex or shape and improves the tool mechanical characteristics at use of aluminium oxide sol-gel as abrasive material. EFFECT: enhanced reliability. 7 cl, 2 dwg, 6 tbl, 4 ex
Patent RU-2100327-C1 (RU)
Title: Method and installation for removing inorganic inclusions from household waste
Inventor: LOSYAKOV VLADIMIR P
IPC: C05F9/02
Filed: 1994-08-24
Granted: 1997-12-27
Abstract: FIELD: waste disposal. SUBSTANCE: method includes separation stage, wherein crushed waste is supplied into upper part of separation column, through lower part of which, air flow is formed entraining organic part of waste into cyclones to be wetted, settled down, and discharged. Installation consists of receiving hopper, conveyor, containers, cylindrical separation column, air blower, and cyclones with sprinklers disposed in its upper part and connected with water pump. EFFECT: facilitated separation procedure. 2 cl, 1 dwg
Patent RU-2096426-C1 (RU)
Title: Method of preparing vulcanizing agent for rubber
Inventor: SHCHERBAN GEORGIJ TROFIMOVICH
IPC: C08G75/14
Filed: 1994-12-19
Granted: 1997-11-20
Abstract: FIELD: vulcanization of rubber mixes. SUBSTANCE: vulcanizing agent is prepared by reacting sulfur with styrene or α- limonenone at 125-140 C at sulfur to unsaturated hydrocarbon molar ratio of 25:1 to 10:1 in the presence of maleic anhydride and subsequently reacting intermediate product with dicyclopentadiene or 5- ethyliden-2-norbornene in amount of 2.5-10.0 % based on weight of intermediate product. EFFECT: more efficient preparation method. 2 cl, 1 dwg , 6 tbl
Patent RU-2098905-C1 (RU)
Title: Cable end sealing arrangement
Inventor: RASSELL P SMIT
IPC: H02G15/013
Filed: 1992-12-28
Granted: 1997-12-10
Abstract: FIELD: power engineering. SUBSTANCE: sealing arrangement has flexible-material skeleton with external periphery and arched through holes as well as tail part built integral with skeleton and stretch in from skeleton periphery to be wrapped around skeleton and cables placed in holes which fills space between skeleton and sealing surface. EFFECT: improved tightness of cable sealing arrangement. 9 cl, 11 dwg, 1 tbl
Patent RU-2087786-C1 (RU)
Title: Раструбное безраспорное облегченное соединение
Inventor: GORELIK BORIS A
IPC: F16L23/02
Filed: 1995-03-15
Granted: 1997-08-20
Abstract: Использование: в судостроении, машиностроении, нефтехимической и других отраслях промышленности, где изготовляют и монтируют трубопроводы, в процессе эксплуатации которых на них действует транспортные, противоположно направленные усилия, пытающиеся его разъединить и разгерметизировать. Сущности изобретения: за счет создания специальной конструкции концевых частей соединяемых труб, их взаимному расположению и уплотнению, которые обеспечивают его безраспорность. В результате обеспечивается герметичность и нормальная работа трубопровода при действии на него распорных усилий, повышается надежность его работы и снижаются затраты трудоемкости, энергоносителей и материалов. 1 ил.
Patent RU-2101913-C1 (RU)
Inventor: KUZNETSOV O JU
IPC: A01G1/04
Filed: 1995-04-19
Granted: 1998-01-20
Abstract: FIELD: agriculture. SUBSTANCE: method involves preparing and compacting substrate, laying it into forming container, into which flexible layer is preliminarily placed; connecting ends of flexible layer positioned adjacent to open part of container; arranging container in growth forcing room so that joined portion of flexible layer is positioned at lower level; removing container. EFFECT: increased efficiency, simplified method and improved quality of mushrooms. 1 tbl
Patent RU-2120156-C1 (RU)
Title: Disordered alloy for electrochemical hydrogen accumulation and electrochemical cell built around it
Inventor: STEHNFORD R OVSHINSKI
IPC: C01B3/00
Filed: 1993-08-25
Granted: 1998-10-10
Abstract: FIELD: alloys for electrochemical hydrogen accumulation and electrochemical cells built around them. SUBSTANCE: electrochemical cell has positive plate, spacer, and negative plate containing disordered alloy of composition  a Co b Mn e Al d Fe e La f Mo g  (main alloy), where main alloy is disordered multicomponent alloy having at least one structure chosen out of group including amorphous, single-crystalline, and polycrystalline ones, with no remote order of ingredients relative to composition, with three or more phases of mentioned polycrystalline structure, and any combination of these structures; its composition is as follows, atom %: b, up to 7.5; c, 0.1 to 8.5; d, up to 2.5; e, 0.1 to 6.5; f, up to 4.5; g, up to 6.5; b+c+d+e+f+q > 0; a+b+c+d+e+f+g = 100 atom %. EFFECT: improved working characteristics. 53 cl, 4 dwg, 5 tbl
Patent RU-2107517-C1 (RU)
Title: Device for inhalation
Inventor: PITER EHRIK KOKS
IPC: A61M15/00
Filed: 1993-09-09
Granted: 1998-03-27
Abstract: FIELD: medicine. SUBSTANCE: device has a stopping element for at least one container with a hole for a powder to be placed and unit for inhalation. The latter has an output opening which is connected with an open container via a channel which has walls interacting with above mentioned hole to develop Venturi tube. EFFECT: higher efficiency at inhaling medicinal powder. 6 cl, 19 dwg
Patent RU-2091479-C1 (RU)
Title: Special vodka "biryusa"
Inventor: PAVLOV YURIJ G
IPC: C12G3/06
Filed: 1995-08-23
Granted: 1997-09-27
Abstract: FIELD: alcoholic beverage industry. SUBSTANCE: vodka contains the following ingredients, l/1000 dal: aromatic alcohol of fir coniferous needle, 1-2; aromatic alcohol of pink radiola, 2-3; 65.8-% sugar syrup, 11-12; aqueous-alcohol liquid, the balance. EFFECT: improved taste. 1 tbl
Patent RU-2117580-C1 (RU)
Inventor: VU PAJ-CHUAN
IPC: B32B27/02
Filed: 1994-03-09
Granted: 1998-08-20
Abstract: Изобретение относится к слоистым материалам, используемым для изготовления пеленок, хирургических халатов, простыней, предметов гигиены и т.п. Материал содержит предварительно формованное нетканое волокнистое полотно и термопластичную пленку, нанесенную посредством экструзии на одну из поверхностей полотна для соединения полотна с пленкой без образования сквозных отверстий в пленке. Полотно имеет множество выступающих наружу от обеих поверхностей полотна концов волокон, образованных при предварительном формовании полотна. Формование полотна осуществляют по существу равномерной по ширине и толщине полотна вытяжкой на высоскоростном оборудовании. Разработан высокоскоростной способ соединения нетканого волокнистого материала с термопластичной пленкой, обеспечивающий производство слоистого материала, имеющего мягкий абсорбирующий слой и достаточную связующую прочность, без образования в пленке сквозных отверстий. 2 с. и 17 з.п. ф-лы, 6 ил., 1 табл.
Patent RU-2086335-C1 (RU)
Inventor: ESIPOV VASILIJ D
IPC: B21D39/02
Filed: 1995-10-30
Granted: 1997-08-10
Abstract: FIELD: plastic metal working, possibly manufacture of tubular products with grooved seam. SUBSTANCE: apparatus includes pair of rollers for preliminarily folding edges one inside another, two pairs of rollers with vertical axis for finish bending with profiled working surfaces and with inclined beads, pair of rollers with horizontal axis for flattening folded edges. All rollers have round gages corresponding to tube diameter. Rollers for preliminarily folding are mounted on horizontal axles. Upper roller for preliminarily folding has wedge annular groove in bottom of said gage. Inclination angles of second and third pairs of rollers for finish bending are equal to 10-15 and 60-70 degrees respectively. EFFECT: improved design.
Patent RU-2126065-C1 (RU)
Inventor: KHORSI DUGLAS
IPC: D01F6/46
Filed: 1994-04-06
Granted: 1999-02-10
Abstract: FIELD: stabilization of polypropylene fibers not containing traditionally used phenol antioxidants. SUBSTANCE: fibers contain from 0.05 to 5.0 wt. % of stabilizing mixture of sterically hindered amine, phosphite or phosphonite and hydroxylamine taken in ratio from 1:1:1 to 100:2:1, respectively. Fibers are light and heat resistant under conditions of durable exposure, resistant to ultraviolet rays they are also stable to decolorization by gases and to locking color without losses of any other stabilizing properties. EFFECT: higher efficiency. 13 cl, 31 tbl
Patent RU-2096712-C1 (RU)
Title: Insulation-and-rider unit
Inventor: KONDRATEV VLADISLAV K
IPC: F27D3/02
Filed: 1995-12-01
Granted: 1997-11-20
Abstract: FIELD: metallurgy, particular, designs of insulation-and-rider units of bottom tubes of heating furnaces of rolling mills. SUBSTANCE: according to the invention, protective casing is made of high-temperature metal and has inserts for connection by welding with base of two-layer rider, and space between protective casing and bottom is filled with refractory material, for instance, kaoline wool. EFFECT: higher stability of insulation and prevention of refractory material, for instance, kaoline wool from burning out. 1 dwg
Patent RU-2143457-C1 (RU)
Title: Door unit of coke furnace with sealing diaphragm
Inventor: RAJNER SHLESSER
IPC: C10B25/16
Filed: 1995-12-15
Granted: 1999-12-27
Abstract: FIELD: sealing of door unit of coke furnaces. SUBSTANCE: door unit of coke furnace includes frame of chamber of coke furnace, door body, at least one connecting plate joined with door body, main cover plate joined with connecting plate, sealing diaphragm. Cut-off frame is joined with sealing diaphragm in zone of frame of coke furnace chamber. Connecting plate may be regulated relative to door body by means of actuating members. The last have clamping threaded sleeve and return screw moving in said sleeve. Clamping threaded sleeve is screwed-on into door body and it may perform helical motion. Return screw is mounted with possibility of motion along thread in connecting plate towards chamber of coke furnace and in backward direction and it is provided with outer land supported by means of inner shoulder of clamping threaded sleeve. Actuating members are mounted in such a way that sealing diaphragm (with the aid of connecting plate) may be regulated in plane of diaphragm at operational deformations. EFFECT: increased service life period of sealing diaphragm. 6 cl, 6 dwg
Patent RU-2089453-C1 (RU)
Inventor: SMOLNIKOV VITALIJ V
IPC: B64C25/54
Filed: 1995-12-27
Granted: 1997-09-10
Abstract: FIELD: lifesaving appliances. SUBSTANCE: system includes inflatable floats connected with autonomous pressure accumulators gas lines. Pressure accumulators with floats secured on them are mounted on helicopter case for rotation about their longitudinal axis. EFFECT: enhanced reliability. 3 dwg