baber/WOPTO huggingface dataset:
Patent NL-1007757-C1 (NL)
Title: Method for hoisting, raising and moving extremely heavy and long prefabricated modules
Inventor: STOOF PIETER MARIA IR
IPC: B66C23/60
Filed: 1997-12-10
Granted: 1999-06-11
Abstract: The under edge of the prefabricated module (1) is guided by means of adjustable and extendable bars, supported on or beneath the crane installation. The hoisting, raising and movement can occur in all possible directions. In the raised state the load can also be rotated.  A hoisting crane (2) is employed in conjunction with a bundle of hoisting cables (3) together with pulleys and hooks, which hang downwards and are coupled to a specific hoist frame (4). The hoist frame is placed above the centre of gravity (5) of the load so that a one point engagement is achieved at the coupling position (6).
Patent NL-1018599-C1 (NL)
Title: Electrical connection boxes with simple means for linking two together for double sockets, etc.
Inventor: KUIPERS MR JOHANNES DOEDE HEND
IPC: H02G3/08
Filed: 2001-07-20
Granted: 2003-01-21
Abstract: The plastic rectangular cable boxes (10, 20) have conventional break-out panels, collars for fixing screws and means for attaching covers. The boxes are placed alongside each other and the slotted U-shaped coupling piece is slid into place over the edges of the gaps left by breakout panels (12, 22). The cables are then laid in place and the closure (31) is hinged over to lock the coupling.
Patent NL-1022545-C1 (NL)
Title: Construction element, e.g. glass door, has transparent panels separated by transparent spacer elements
Inventor: DUIN WALDEMAR GERARDUS
IPC: E06B3/02
Filed: 2003-01-31
Granted: 2004-08-03
Abstract: The transparent panels (5, 6) are separated by at least one transparent spacer element (7) secured to the panels by a transparent fastener means. A double-wall construction element (1) comprises two opposing transparent panels separated by one or more spacer elements extending along or close to the panel edges. The spacer elements are transparent and the means used to secure the spacer elements to the panels is at least substantially transparent too.
Patent NL-1026182-C1 (NL)
Title: Electromechanical rocker operated switches have LED to illuminated panel with light passing through an optical conductor
Inventor: HAHN CHRISTA
IPC: H01H23/02
Filed: 2004-05-12
Granted: 2005-02-01
Abstract: A number of microswitches are mounted on a panel and each have a rocker input panel [4]. Set into the center of each rocker is an optical conductor [6] that transmits light externally from a light emitting diode, LED. When the rocker tilts the actuator surface [8] operates the switch [9] and light is also interrupted.
Patent RU-2041501-C1 (RU)
Title: Sealing device for slot hole of system for data gathering
Inventor: NORBERT KHELMSHROTT
IPC: G11B33/02
Filed: 1990-01-24
Granted: 1995-08-09
Abstract: FIELD: automation and instrument making. SUBSTANCE: device has slot hole 7 (8) in front wall of housing 4. Sealing rod 34 (32) which is mounted in corresponding recess 31 (30) has cylindrical operating surface and is oriented along upper longer side of slot hole 4. Rod 34 (32) can be spring-loaded in the direction of slot hole 7 (8). Otherwise it can be made from material that has enough weight in order to engage with opposite side. In addition cylindrical rod 35 (33) can be mounted for free rotation in corresponding recess. Sealing rod 34 (32) as well as side opposite to it can be covered with elastomeric cover. EFFECT: increased reliability, decreased size, facilitated manufacturing and ease of use in stock production. 6 cl, 5 dwg
Patent RU-2022818-C1 (RU)
Inventor: GRIGOREV KIM I
IPC: B60K1/00
Filed: 1989-08-22
Granted: 1994-11-15
Abstract: Изобретение относится к наземным безрельсовым транспортным средствам, в частности к электромобилям. Сущность изобретения: электромобиль содержит раму 2, соединенную упругими элементами с ведущим мостом 1 и электродвигатель двойного вращения. Ведущее колесо 12 электромобиля приводится в действие от ротора 8 электродвигателя и расположено со стороны сиденья водителя. 2 ил.
Patent RU-2061930-C1 (RU)
Title: System for heating room with compressed heated gas
Inventor: PODGORNYJ VIKTOR I
IPC: F24D5/00
Filed: 1990-03-27
Granted: 1996-06-10
Abstract: FIELD: heat engineering. SUBSTANCE: closed loop of air ducts has power plant and heaters arranged inside a room. The power plant is air compressing units connected in series. The air ducts are incorporated in the closed loop. The first power plant in the direction of the flow can operate from an independent power source and due to supplying to it a portion of exhaust compressed air. Each subsequent plant is energized from previous one and is operated by compressed air that rotates the hollow shaft of the plant through levers with jet nozzles. The levers are different in length and diameter. Each plant has a compressor kinematically connected with the hollow shaft and receiver. The hollow shaft is connected with an electric generator coupled with an electric heater positioned inside an air duct. The air heater is in communication with the air duct downstream of the power plants. EFFECT: enhanced efficiency. 3 cl, 1 dwg
Patent RU-2023539-C1 (RU)
Inventor: KUZNETSOV SERGEJ V
IPC: B23B25/06
Filed: 1990-04-04
Granted: 1994-11-30
Abstract: Использование: обработка металлов резанием, контроль инструмента в металлообрабатывающих станках. Сущность: устройство содержит контактный элемент, закрепленный на выходном валу двигателя, пружину, контакт, установленный на выходном валу. На последнем одним концом закреплена пружина. На фланце закреплен другой конец пружины. 1 ил.
Patent RU-2044320-C1 (RU)
Inventor: MATVEEV ALEKSANDR G
IPC: G01N33/53
Filed: 1990-04-10
Granted: 1995-09-20
Abstract: FIELD: medicine; immunology. SUBSTANCE: method involves sensibilizing iron oxide particles by using immunologic reagents, their incubating with a sample under test thinned with phosphate buffer solution at pH 6.8-7.6. The contents of substances of interest in the sample is determined from observed particle agglutination in final diluted state. EFFECT: higher sensitivity of method.
Patent RU-2051014-C1 (RU)
Inventor: STAUBWASSER WOLFGANG
IPC: B05C1/08
Filed: 1989-02-10
Granted: 1995-12-27
Abstract: Использование: изготовление подвергающихся высоким термическим нагрузкам носителей катализатора. Сущность изобретения: для создания выдерживающих высокие нагрузки паяных соединений припаиваемые участки листов покрывают клеем или связкой, преимущественно клеем. Затем листы наматывают или укладывают листы в ячеистый элемент и лишь после этого на элемент наносят порошок припоя. Возможны выборочные паяные соединения в середине ячеистого элемента или по торцам. Так могут быть выполнены высококачественные паяные соединения, необходимые для используемых на автомобилях катализаторов системы нейтрализации отработанных газов в режиме пуска и прогрева двигателя. 8 з. п. ф-лы, 2 ил.
Patent RU-2006906-C1 (RU)
Inventor: OPARIN ALEKSANDR N
IPC: G06E3/00
Filed: 1990-06-07
Granted: 1994-01-30
Abstract: FIELD: optical computer engineering. SUBSTANCE: processed image is shown on screen of monochrome cathode-ray tube 1. Screen is placed in input front of correlation meter. Image is received by photodetector 6 through channel of color filter 2, stop aperture 3, holographic filter 4 and projecting lens 5. Holographic filter is made as matrix of Fourier-type holograms of reference image. Number of images processed by correlation meter is increased due to invented implementation of holographic filter. This results in increased precision of correlation meter. EFFECT: increased quality of image processing. 1 dwg
Patent RU-2021485-C1 (RU)
Title: Bottom-hole assembly of drill string
Inventor: KHASAEV RAUF M
IPC: E21B31/00
Filed: 1990-07-20
Granted: 1994-10-15
Abstract: FIELD: well drilling. SUBSTANCE: bottom- hole assembly of drill string includes drill bit, bottom-hole motor and drill collars connected with it. Pins of pipe joints are installed relative to boxes with gap between their end stops and locked with shear stop members. When certain torque is applied to drill string stop member is sheared and pipes are unscrewed alternately. EFFECT: higher efficiency. 1 dwg
Patent RU-2022695-C1 (RU)
Inventor: LEBEDEV VLADIMIR I
IPC: B22D11/06
Filed: 1990-08-22
Granted: 1994-11-15
Abstract: Изобретение относится к металлургии, конкретнее к непрерывной разливке плоских слитков с обжатием в твердожидком состоянии. Целью изобретения является повышение стойкости оборудования, производительности и стабильности процесса. В процессе непрерывной разливки подают мметалл в зазор между приводными барабаном, ребордами и лентой, вытягивают слиток с переменной скоростью, устанавливаемой по зависимости V≥ (40 - 50) (r ·α)/h 2  , где V - скорость вытягивания слитка, м/мин; r - радиус кривизны верхней широкой грани плоского слитка, м; α - угол сектора барабана, на длине окружности которого кристаллизуется слиток, градус; h - толщина слитка после обжатия, мм; (40 - 50) - эмпирический коэффициент, учитывающий теплофизические свойства кристаллизующегося металла, мм 2 /мин . 2 ил., 1 табл.
Patent RU-2048792-C1 (RU)
Inventor: LITASOVA ELENA E
IPC: A61B17/12
Filed: 1990-11-20
Granted: 1995-11-27
Abstract: Изобретение относится к способам хирургического лечения пороков сердца. Цель предупреждение остаточного шунта при закрытии дефекта межжелудочковой перегородки заплатой, прикрытого створкой трикуспидального клапана. Способ осуществляется рассечением перегородкой створки трикуспидального клапана от свободного края в направлении фиброзного кольца, причем направление, угол и форма разреза определяются, исходя из локализации дефекта межжелудочковой перегородки. Максимально раскрывают края дефекта разделением рассеченных фрагментов створки в стороны. Имплантируют заплату, пришивая отдельными П-образными швами по всему периметру. Пластика створки двухрядным непрерывным атравматическим швом.
Patent RU-2010652-C1 (RU)
Inventor: BARINOV ALEKSEJ P
IPC: B21F3/04
Filed: 1990-11-28
Granted: 1994-04-15
Abstract: FIELD: mechanical engineering. SUBSTANCE: device has bed with guides carrying carriage with pitch-setting mechanism provided with actuating cylinder. The pitch-setting mechanism is in the form of housing carrying inside the drive with controlling member and is provided with drive with piston and two screws for adjusting the spring pitch. The piston is mounted between the said screws for periodic engagement with them and is provided with groove for locating the controlling member. The device has also the rotary axle around which the wire being coiled forms the loop containing at least of one turn. EFFECT: extending operating capabilities. 1 cl, 2 dwg
Patent RU-2010794-C1 (RU)
Inventor: KHATIRO SUGIMOTO
IPC: A61K31/517
Filed: 1991-06-14
Granted: 1994-04-15
Abstract: Использование: в медицине, в частности в качестве веществ с антиацетилхолинэстеразной активностью. Сущность изобретения: продукт - производные циклического амида ф-лы 1 R 1 -(CH 2 ) n -Z, где R 1  - одна из групп - 2Н-3,4-дигидро-1,3-бензоксазин-2-он, 2Н-3,4-дигидро-1,3-бензоксазин-2,4-дион, 1,2,3,4-тетрагидрохиназолин-2,4-дион, 1,2,3,4-тетрагидрохиназолин-2-он, 1,2,3,4-тетрагидропиридо[3,2-d] пиримидин-2,4-дион, 1,2,3,4-тетрагидропиридо[3,2-d] пиримидин-2-он, 1,2,3,4-тетрагидроптеридин-2,4-дион, пирролидин-2-он, 1,2,3,4-тетрагидроптеридин-2-он, 5Н-6,7,8,9-тетрагидропиридо[3,2-b] азепин-6-он, 9Н-5,6,7,8-тетрагидропиридо[3,2-b] азепин-8-он, 2Н-3,4-дигидропиридо[3,2-е] -1,3-азепин-2-тион или -2-он, пирролидино[3,4-b] пиразин-5-он, 1Н-2,3,4,5-тетрагидроазепино[3,2-b] индол-2-он, 8Н-4,5,6,7-тетрагидроазепино[3,2-b] тиофен-7-он, 4Н-пиразоло[5,4-е] бензазепин-9-он, изоиндолин-1,3-дион, бензаксазолин-2-он, возможно замещенный низшим алкилои, алкокси, галоидом, нитро, карбокси, бензолом или бензоилом; n = 0, 1 - 6; Z - группа ф-лы 2 или 3   (2) или   (3), где R 2  - фенил, возможно галоидфенил, C 5 -C 6 -циклоалкил или радикал пиридина, диоксолана, фурана, тетрагидрофурана, метилфурана или тиофена; m-1 - 3; R 3  - низший алкил; R 4  - фенил или радикал диоксолана, фурана или тиофена; p = 1, при условии, что при R 1  - 1,2,3,4-тетрагидрохиназол-2-он или -2,4-дион, R 2  и R 4  не являются ни фенилом, ни галогенфинилом, или их фармакологически приемлемых солей. 1 табл.
Patent RU-2047888-C1 (RU)
Title: Device for coordinated regulation of angular lateral movement of flying vehicle
Inventor: BELOVA LYUBOV E
IPC: G05B13/02
Filed: 1990-11-29
Granted: 1995-11-10
Abstract: FIELD: instrumentation engineering. SUBSTANCE: device has roll channel and lateral g-load channel. Each channel is provided with subtraction element and summing amplifier. These members form control signals for roll and lateral g-load. Device is provided with sine function forming unit, cosine function forming unit, inverting amplifier, maneuvering jet engine control signal shaper, integrator, non-linear element with dead zone, two limiters, tangent function signal former, two correction function generators, three amplifiers, three multipliers, roll channel output summer, scaler and divider. EFFECT: extended functional capabilities at deficit of aerodynamic control. 5 dwg
Patent RU-2040077-C1 (RU)
Title: Pressurized cylindrical nickel-cadmium storage cell
Inventor: GALKIN VALERIJ V
IPC: H01M10/36
Filed: 1991-02-12
Granted: 1995-07-20
Abstract: FIELD: storage cells. SUBSTANCE: device has housing, unit of electrodes which are positioned in horizontal plane, and additional gas electrode which is shaped as two intersecting ribbons which length is equal to sum of two sizes and diameter of electrode unit. Each ribbon is made from nickel grid. One surface of ribbon is covered by water-proof active carbon layer, another surface of ribbon is covered by fluoroplastic layer. Point of intersection of two ribbons provides direct electric contact between them. Longitudinal ridges which have mechanical contact with carbon electrode are provided in wall of storage cell housing opposite to carbon electrode. EFFECT: increased functional capabilities. 2 dwg
Patent RU-2054300-C1 (RU)
Inventor: NUDEL ARKADIJ M
IPC: B01D37/00
Filed: 1990-02-26
Granted: 1996-02-20
Abstract: FIELD: cleaning of liquids. SUBSTANCE: method involves delivery of polluted liquid under upper layer of charge while filtering from top down and subsequent washing of the upper part of the layer with washing liquid is stopped when said liquid appears at the filter casing outlet. The filter comprises a layer of granular filtering charge disposed on lower drain device, middle distributing device and upper distributing device located in the charge layer at a distance of 0.3-0.8 m from the middle distributing device. The upper distributing device has the form of pipes with holes whose size is larger than that of the layer particles by at least 3 times. EFFECT: higher efficiency. 2 cl, 1 dwg
Patent RU-2009485-C1 (RU)
Title: Method for determining cloud temperature of diesel fuel
Inventor: AVZALOV AUFAT F
IPC: F02B3/06
Filed: 1991-04-08
Granted: 1994-03-15
Abstract: FIELD: measurement technology. SUBSTANCE: method involves steps of sampling a specific volume of fuel, measuring its optical density, passing through a layer of silica gel, remeasuring the optical density. The cloud temperature is calculated from the formula: X=K(D 1 -D 2 )-54,4, where X is the cloud temperature of diesel fuel, K is the coefficient equal to the tangent of the angle between the line and the abscissa axis, D 1  and D 2  are the values of optical density before and after passing through the silica gel layer, 54.4 is the experimental coefficient corresponding to zero value of the difference between the optical densities. EFFECT: increased measurement accuracy. 2 cl, 4 tbl
Patent RU-2010675-C1 (RU)
Title: Apparatus for processing oil-containing metal grinding scrap
Inventor: TAMBOVTSEV YURIJ I
IPC: B22F1/00
Filed: 1991-04-08
Granted: 1994-04-15
Abstract: FIELD: mechanics. SUBSTANCE: apparatus has capsules with scrap which open base is turned down. The base is overlapped by a layer of balls and is positioned on a grid. Moreover, the apparatus has a heater and a cooler in the form of a tank with a water jacket. The capsules are positioned in a carried out sealed chamber with a powder valve and flue gas bleed branch pipe. The cooler is positioned in the lower part of this chamber. EFFECT: improved structure. 1 dwg
Patent RU-2065825-C1 (RU)
Inventor: SOROKIN BORIS V
IPC: B64C13/30
Filed: 1991-04-29
Granted: 1996-08-27
Abstract: FIELD: aeronautical engineering; flying vehicle control systems. SUBSTANCE: device is provided with guide 4 whose one end is articulated on arm of input bell crank 1 and other end is secured on arm of output bell crank 3 coaxially with output rod 6. Length of guide 4 is equal to length of arm of input bell crank 1 to be connected to guide 4. EFFECT: enhanced efficiency. 2 cl, 2 dwg
Patent RU-2035608-C1 (RU)
Title: Carburetor for internal combustion engine
Inventor: GNATOVSKIJ PAVEL DEMENTEVICH
IPC: F02M7/18
Filed: 1991-05-20
Granted: 1995-05-20
Abstract: FIELD: engine engineering. SUBSTANCE: carburetor has housing 1, fuel nozzle 3 with passage 6 provided with conical inlet 7 and outlet 8 sections. The grate diameters of the sections face the inlet and outlet ports of passage 6. Needle 5 with entering conical surface 14 is mounted coaxially to passage 6 for permitting axial movement and to define gap 20. Screw grooves are provided on rod 10 of needle 5. The grooves abut on surface 14. Conical surface 14 of needle 5 and conical surface of section 7 has the same inclination. The angles of inclinations of conical surfaces 7 and 8 and surface 14 is in the range of 55-65 deg. When fuel is sucked in the carburetor chamber the fuel stream is swirled with grooves 18 and form thin film which is projected into the stream. In so doing, a fine dispersive fuel-air mixture is formed. EFFECT: improved design. 2 cl, 1 dwg
Patent RU-2019264-C1 (RU)
Title: Filter
Inventor: KULEMIN VLADIMIR V
IPC: B01D29/00
Filed: 1991-06-03
Granted: 1994-09-15
Abstract: FIELD: production of filters. SUBSTANCE: filter uses a cylindrical perforated framework with a filter spiral made of wire located on it and vibrators connected to the framework end face at an angle of 3 to 87° to its longitudinal axis. EFFECT: improved design. 2 cl, 3 dwg
Patent RU-2043914-C1 (RU)
Inventor: PLYUGACHEV KUZMA VITALEVICH
IPC: B25J11/00
Filed: 1991-06-27
Granted: 1995-09-20
Abstract: FIELD: mechanical engineering. SUBSTANCE: manipulator is put into the state in which grip 6 is found as fixed relative to fixing member 7. Grip 6 captures the fixing member and thus it is fixed relative to the latter. Then the values of the generalized coordinates of the manipulator are measured and stored at the given state of the grip and the configuration of reconfigured link 5. After that not changing the parameters of the reconfigured link, working body 6 is put into the programmable position and the values of the generalized coordinates are measured and stored. In this way each programmable position is presented at two sets of the generalized coordinates. EFFECT: enhanced accuracy of the position of the manipulator working body. 2 dwg
Patent RU-2021470-C1 (RU)
Title: Roller-cutter core drill bit
Inventor: EDELMAN YAKOV A
IPC: E21B10/06
Filed: 1991-06-28
Granted: 1994-10-15
Abstract: FIELD: drilling equipment. SUBSTANCE: axis of one end of spindle 4 is displaced relative to place of fitting of roller cutters 5 and 6. Both ends may be displaced to one side and through same distance from axis of place of fitting for roller cutters 5 and 6. Diameter of one end of spindle 4 is smaller, and diameter of the other end of spindle 4 is larger than the diameter of place of fitting for roller cutters. EFFECT: higher efficiency due to uniform action of core- forming roller cutters on core. 2 cl, 2 dwg
Patent RU-2010174-C1 (RU)
Title: Method for determining fuel quantity in tank
Inventor: LYSIKOV YURIJ M
IPC: G01F17/00
Filed: 1991-07-11
Granted: 1994-03-30
Abstract: FIELD: air-space technology. SUBSTANCE: equal portions of gas are fed to a tank by proportioner 2 during the pressurization cycle and the number of gas portions during the cycle is determined. Pressure at the beginning and the end of the gas portion series delivery is simultaneously measured by transducer 4, the gas temperature at the tank inlet is measured by transducer 5. The quantity of fluid in tank 1 is computed using the measured data. EFFECT: improved accuracy. 2 dwg
Patent RU-2007624-C1 (RU)
Inventor: ARSIRIJ VASILIJ A
IPC: F04F5/16
Filed: 1991-10-18
Granted: 1994-02-15
Abstract: FIELD: fluidic. SUBSTANCE: case with face plates is provided with delivery chamber, active nozzle, and mixing chamber and diffuser conjugated with each other to form flowing section. The face plates are provided with passages for supply of active and passive fluid and passage for discharging fluid mixture. The delivery chamber has a convergent part which is smoothly conjugated with the diffuser. Cross-sections of the active nozzle and diffuser are square. The passage for supply of the passive fluid is inclined to axis of the active nozzle. Sides, which form flowing part of diffuser, is made by conjugating parts with increasing aperture angle. The last of the parts is smoothly conjugated with the passage for supply of fluid. EFFECT: improved design. 2 cl, 2 dwg
Patent RU-2063658-C1 (RU)
Title: Gray code pulse counter
Inventor: DIKAREV IGOR I
IPC: H03K23/00
Filed: 1991-11-18
Granted: 1996-07-10
Abstract: FIELD: pulse devices. SUBSTANCE: device has (3N+2) NOR gates (1, 2, 16-1 ... 16-N; 17-1 ... 17-N; 18-1 ... 18-N) -- three gates in each counting flip-flop and two in check flip-flop. In addition device has (2N+3) XOR gates (4, 14, 20-1 ... 20-N, 24-1 ... 24-(N-1)) -- two in each counting flip-flop except last one, and one in check and last counting flip-flops and one check flip-flop. In addition device has (N+1) double-way gate (3, 19-1 ... 19-N) -- one in each counting flip-flop and one in check flip-flop. In addition device has two inverters 9, 10, (N-2) AND gates 25-1 -- in each counting flip-flop except two last ones, (2N+2) resistors (6, 8, 21-1 ... 21-N, 23-1 . . . 23-N) -- two in each counting flip-flop and two in check flip-flop. In addition device has (N+1) capacitors (7, 22-1 ... 22-N) -- in each counting flip-flop and in check flip-flop. Device may be used in digital computing and control systems which operate under condition of electromagnetic influence, discharges of static electricity and pulse ionizing radiation. EFFECT: increased reliability. 1 dwg
Patent RU-2099338-C1 (RU)
Inventor: DZHONATAN ALAN VIKTOR KOUTS
IPC: A61K31/7072
Filed: 1991-05-02
Granted: 1997-12-20
Abstract: Использование: в качестве препарата при лечении вирусных инфекций. (-) энантиомер цис-4-амино-1-(2-гидроксиметил-1,3-оксатиолан -5-ил)-(1H)-пиримидин-2-он получают, подвергая смесь (-)-энантиомера и (+)-энантиомера хиральной высокоэффективной жидкостной хроматографии или энантио-селективному катаболизму, проводимому при посредстве фермента. 6 с. и 12 з.п. ф-лы, 4 табл.
Patent RU-2039435-C1 (RU)
Title: Device for making confectionery
Inventor: GOLDENBERG BORIS SEMENOVICH
IPC: A21B5/00
Filed: 1991-12-02
Granted: 1995-07-20
Abstract: FIELD: food industry. SUBSTANCE: device has continuous oven with electric heaters and regulators to adjust heaters in height, loading container with meter and conveyor with cellular moulds. Conveyor is made of all-metal closed flexible tape, 0.2-0.5 mm thick. Cells of moulds are arranged in rows, and contours and patterns on cell surface correspond to contours and patterns of surfaces of baked products. Conveyor belt is arranged for passing between pressure plate with slots for passage of moulds, and loading container. Pressure plate is secured on support frame in front of oven entrance. Slot made in bottom of loading container is oriented along conveyor belt width and it embraces row of moulds. Installed at slot outlet along the slot is knife whose length is not less than length of slot. Pressure roll is installed in front of knife for rotation and engagement with conveyor belt. EFFECT: enlarged operating capabilities. 4 dwg