baber/WOPTO huggingface dataset:
Patent NL-1030604-C1 (NL)
Title: Support foot for orthopaedic aid, e.g. crutch, has its support body pivotally connected via coupling part to fastener used to mount foot on end of aid
Inventor: WIJCKELSMA CORNELIS
IPC: A61H3/02
Filed: 2005-12-06
Granted: 2007-06-07
Abstract: The support body (3) for transmitting pressure forces to the ground is pivotally connected via a coupling part (4) to the fastener (2) used to secure the foot (1) to the bottom of the aid (102). The coupling part is a ball joint.
Patent NL-1032789-C1 (NL)
Title: Device is to prevent petrol being filled into diesel tank, thus avoiding considerable damage
Inventor: MEULENDIJKS PETRUS JOZEF
IPC: B60K15/04
Filed: 2006-11-01
Granted: 2008-05-06
Abstract: The device is to prevent petrol being filled into a diesel tank, thus avoiding considerable damage. This error is caused by a vehicle driver using the wrong filling pistol. With the invention the petrol pistol is blocked whilst the diesel pistol is used to fill the tank of a diesel-driven vehicle. In the feed conduit (1) to the diesel tank a cylindrical body (2) is fitted, of which an outer end is axially divided into at least two segments (4), which with a secure counter pressure are hingeable in the direction of the inner wall of the feed conduit. In the unloaded state they have a tendency to return to their starting position, either through the elastic properties of the vehicle, or through mechanical devices, such as a torsion spring (8). Each segment is provided with at least one ridge (6) and at the outer end is provided with an upstanding edge (7), which is so positioned that when a diesel pistol (10) is applied the ridges are so pressed that the outer end of the diesel pistol with no single upstanding edge comes into contact whilst a petrol pistol (9) is at all times blocked by the upstanding edge of at least one segment.
Patent NL-1034627-C1 (NL)
Title: Firework, has curly fuse to provide increased strength and longer burning time compared with flocked knitted fuse
Inventor: KLAVER JOCHEM
IPC: F42B4/00
Filed: 2007-11-02
Granted: 2007-11-20
Abstract: The fuse is a curly one instead of having a conventional flocked, knitted design.
Patent RU-2039988-C1 (RU)
Title: Rotational speed electro-mechanical sensor
Inventor: MARTYNOV ALEKSANDR YU
IPC: G01P3/48
Filed: 1986-10-16
Granted: 1995-07-20
Abstract: FIELD: measurement technology. SUBSTANCE: electron switch are comparator are brought into the device. The units mentioned realize positive feedback between output of generator and electro-mechanical sensor. As a result, generator operation threshold is created which corresponds to hysteresis for angular displacement of modulating disk. EFFECT: improved precision of measurements. 2 dwg
Patent RU-2045264-C1 (RU)
Title: Antiaggregation agent
Inventor: SIDORENKO GEORGIJ IVANOVICH
IPC: A61K31/718
Filed: 1983-12-15
Granted: 1995-10-10
Abstract: FIELD: medicine, namely antiaggregation agents. SUBSTANCE: a matter, being a sodium salt of oxidized starch, containing 1-25 mass of carboxyls, is supposed as an antiaggregation agent. EFFECT: enhanced antiaggregation action. 1 cl, 1 tbl
Patent RU-2014189-C1 (RU)
Title: Method for estimating welding arc ignition stability
Inventor: KUKUSHKIN ANATOLIJ A
IPC: B23K9/167
Filed: 1987-11-30
Granted: 1994-06-15
Abstract: FIELD: estimation technology. SUBSTANCE: electrode is moved towards a weldable part by striking an electrode holder by falling weight 16 or by a percussion mechanism. The strike energy may be regulated by moving brackets 3 and 4 along post 5. After the welding circuit is closed electrode holder 12 with electrode 13 is returned to the initial position by spring 8. The electrical arc burns until the electrode is melted and the gap between the electrode and the part increases. The number of successful ignitions and the number of attempts to ignite the arc are counted. Their ratio is determined by which the arc ignition stability is estimated. EFFECT: improved reliability. 1 dwg
Patent RU-2059405-C1 (RU)
Title: Material for osteosynthesis
Inventor: PERTTI TERMYALYA
IPC: A61B17/00
Filed: 1988-07-05
Granted: 1996-05-10
Abstract: FIELD: medicine; materials for osteosynthesis for instance, plates, bars, rods pins, screws, nails, clamps, etc. SUBSTANCE: material for osteosynthesis consists of resolution polymer matrix reinforced with fibers of threads of the same polymer, and coating is also of the same polymer. Polymer for manufacture of products applicable in osteosynthesis used in form of polyglycolide, polyactide, copolymer of glycolide with lactide, poly-beta-hydroxybutyric acid, polyesteramide, polydioxanone, etc. Presence of coating on matrix allows increase of initial strength of product for osteosynthesis and terms of their strength preservation in biodegradation. EFFECT: increased strength and terms of strength preservation in biodegradation of products for osteosynthesis from resolution polymers. 1 dwg, 1 tbl
Patent RU-2033165-C1 (RU)
Title: Process for manufacture of plastic material from collagen
Inventor: FEDOROV SVYATOSLAV N
IPC: A61L27/16
Filed: 1989-10-13
Granted: 1995-04-20
Abstract: FIELD: medicine, particularly, ophthalmology. SUBSTANCE: object of this invention is stepping up gas permeability and biological compatibility of material. For this purpose, claimed process prescribes carrying out depigmentation of collagen, introducing it into solution of silicic acid alkaline metals to obtain pH value of 4.5 to 6.0, standing thus prepared gel with stirring, isolating gel from liquid, washing it in deionized water to remove cations, saturating thus produced diafiltrated gel by water-soluble acrylate or vinyl monomers, exposing it to radiation at doses of 5 to 15 kG, and drying it. Further steps are mechanical treatment, immersing resultant stock into solution of chemically pure hydrofluoric acid, and then electrochemical purification of end product to remove anions and cations. EFFECT: higher gas permeability and biological compatibility of desired product.
Patent RU-2011258-C1 (RU)
Inventor: LEVINZON VLADIMIR S
IPC: H02H7/12
Filed: 1990-01-08
Granted: 1994-04-15
Abstract: Сущность изобретения: если напряжения, коммутируемые на устройство контроля уровня 9, в пределах допуска, то на его выходах присутствует сигнал лог "0", на выходе схемы 8 - сигнал лог "0" и выходы триггера 7 не изменяют своего состояния. Если одно из напряжений /не приоритетное/ выходит из допуска, то на выходе схемы ИЛИ 8 присутствует сигнал лог "1", который синхронизирует триггер 7; на его выходах присутствует код от счетчика 6, определяющий номер неисправного канала, он дешифрируется дешифраторами 17 (для индикации десятичной цифры на индикаторе 14) и 18 (для отключения соответствующего выпрямителя и фильтра 2) и проверяется компаратором 13 на соответствие коду приоритета, задаваемым узлом 16 /который может быть фиксированным для данного типа изделия или изменяться во времени/. При выходе другого напряжения приоритетного из допуска на выходе элемента ИЛИ 8 образуется сигнал логической "1" на выходах триггера 7 - код с выходов счетчика 6 соответствующий номеру неисправного канала, который поступает на дешифратор 17 - на индикаторе 14 индицируется десятичная цифра, соответствующая номеру неисправного канала, на выходе дешифратора 13 - сигнал логической "1", который блокирует работу счетчика 6 /запрещает счет/ на индикаторе 14 загорается сегмент "H" /указание на приоритетный канал/ и блокируется схемы управления 15 усилителем мощности. 1 ил.
Patent RU-2048281-C1 (RU)
Title: Сварочная головка
Inventor: KISELEV LEONID ALEKSANDROVICH
IPC: B23K37/02
Filed: 1990-04-16
Granted: 1995-11-20
Abstract: Использование: при электродуговой сварке фланцев с обечайками. Сущность: сварочная головка для автоматической сварки фланце с обечайками содержит корпус 1, в котором на подшипниках 2, 3 установлен полый вал 4, связанный со сварочной горелкой 7. Токоподвод к горелке выполнен в виде цилиндрического изолятора 31, жестко закрепленного на полом валу 4. В изоляторе, неравномерно по его окружности, выполнены гнезда 32, в которые при помощи пружины 33 установлены плавающие щетки 34. Верхний торец щеток 34 сопряжен с неподвижным и жестко закрепленным на нижнем торце корпуса медным диском 35, а нижний торец щеток с помощью электропривода сопряжен с медным диском 36, установленным на нижнем торце изолятора 31. Механизм вращения полого вала включает электропривод 20, ведущую шестерню 21, паразитную и ведомую 23 шестерни. Корпус закреплен на стойке 28 с помощью шарового шарнира и имеет возможность вертикального перемещения. Головка имеет механизм подачи присадочной проволоки, систему слежения за длиной дуги и центратор, выполненный в виде двух подпружиненных относительно друг друга частей. На корпусе сварочной горелки установлено зеркало. Конструкция сварочной горелки позволяет повысить эффективность настройки электрода относительно стыка. Повышена надежность головки в работе, стабильность горения дуги, улучшены условия для наблюдения за движением сварочной горелки. 2 з.п. ф-лы, 5 ил.
Patent RU-2020148-C1 (RU)
Inventor: TARASOV VASILIJ E
IPC: C11B3/06
Filed: 1990-08-20
Granted: 1994-09-30
Abstract: FIELD: oil-and-fat industry. SUBSTANCE: method involves mixing oil with hot electrically-activated liquid agent, and drying. Agent is a liquid with pH = 2-4 produced by electrolysis of aqueous salt solutions in the amount 0.1-0.4 of oil mass. Agent is a liquid obtained by electrolysis of aqueous solution of sodium chloride. EFFECT: higher efficiency. 2 cl, 2 tbl
Patent RU-2068310-C1 (RU)
Title: Roll working method and apparatus
Inventor: LEPEKIN VLADILEN SERGEEVICH
IPC: B21B28/02
Filed: 1990-07-09
Granted: 1996-10-27
Abstract: FIELD: roll surface working. SUBSTANCE: method involves exposing rolls to electrolytic heating and simultaneously to pulsed discharge, with dipping of rolls into electrolytic solution being effectuated at speed of 10-250 cm/min. Apparatus has casing, electrolytic bath, supports, rolls rotation drive, cathodic and anodic systems with current supplies and lifting frame with lifting mechanism fixed at one of its side. Opposite side of frame is pivotally fixed within casing. Electrolytic bath is mounted on lifting frame. EFFECT: increased efficiency, simplified method and enhanced reliability in operation. 3 cl, 3 dwg, 1 tbl
Patent RU-2018589-C1 (RU)
Title: Hydrant
Inventor: KOBOZEV ILYA V
IPC: E03B9/04
Filed: 1990-09-12
Granted: 1994-08-30
Abstract: FIELD: hydrants. SUBSTANCE: sealing collars are arranged over height of body with inlet and outlet. Installed in sealing collars for vertical displacement is tubular member plugged from atop. Hollow rod with holes over its height and horizontal partition may move vertically. Body has cover, its upper collar is located above outlet to form chamber in which collar of tubular member is installed on its upper end. Hollow rod has floating valve and stops. One stop is positioned on rod above cover, and the other stop, on lower end of rod installed in hollow of tubular member. Mounted between rod stop above cover and regulating member is spring. Regulating member is made in form of threaded bushing accommodating rod upper end. Plug of tubular member has stops and stuffing box seal. EFFECT: higher efficiency. 2 cl, 2 dwg
Patent RU-2019308-C1 (RU)
Title: Spacer metal tube made of particularly aluminum for frame and cross-casement lintels of insulation transparencies, metallic tape and method and apparatus for carrying out same
Inventor: KHORST LINGEMANN
IPC: E06B3/673
Filed: 1991-04-24
Granted: 1994-09-15
Abstract: The invention relates to a spacer tube (3) made of metal, in particular aluminium, for frame or glazing bars of an insulating glazing as spacers or desiccant containers between two continuous glass panes, a coloured strip (2) being printed on the inner wall (5) of the spacer tube (3) which is visible in the insulating glazing, and gas-exchange openings (8) preferably subsequently being incorporated in the inner wall (5). The invention also relates to a method for producing a spacer tube (3), in which a variety of coloured strips (2) are printed, preferably simultaneously, next to one another onto the surface of a metal band (1) using a rotary printing apparatus (17), the colouring material is dried and the metal band is divided longitudinally between the coloured strips and the resulting metal strips are profiled into spacer tubes (3) and cut to length. <IMAGE>
Patent RU-2094410-C1 (RU)
Title: Method of preparing organomineral fertilizers
Inventor: GUMBATOV MAGOMED ORUDZH
IPC: C05F3/00
Filed: 1991-02-20
Granted: 1997-10-27
Abstract: FIELD: agriculture. SUBSTANCE: method comprises mixing excrement, superphosphate and nitrogen fixing additive. The nitrogen fixing additive is clinoptilolite with particle size of less than 0.5 m at extrement to superphosphate to clinoptilolite weight ratio of 1:(0.03- 0.15):(0.05-0.17). EFFECT: deodorizing of mixture and lower nitrogen losses. 2 tbl
Patent RU-2025263-C1 (RU)
Inventor: KIZILSHTEJN LEONID YA
IPC: B24C11/00
Filed: 1991-05-08
Granted: 1994-12-30
Abstract: Использование: для струйной обработки поверхностей с целью придания им декоративных свойств и подготовки для нанесения гальванического или лакокрасочного покрытия. Сущность: с целью упрощения способа получения микрошариков используют микрошарики из золы-уноса пылеугольных ТЭС в качестве абразивного материала.
Patent RU-2034720-C1 (RU)
Title: Magnetically-levitated vehicle
Inventor: BOLYUKH VLADIMIR FEDOROVICH
IPC: B60L13/04
Filed: 1991-05-20
Granted: 1995-05-10
Abstract: FIELD: transport. SUBSTANCE: magnetically-levitated vehicle has undercarriage 1 arranged above roadbed 2. Found in upper part of undercarriage is saloon 3 and in the lower part of undercarriage, at its bottom, windings of linear motor 4 and power sources are arranged. Power sources are made in form of two closed tapes 5 whose outer straight-line sections are located opposite to roadbed circuits 7 building up lifting force; inner straight-line sections of tapes 5 being pointed to winding of linear motor 4. Fitted on end face parts of undercarriage 1, in its head and tail, are disks wrapped around by closed tape 5. Disk axles are connected with power generators 10. Reaction bus 11, for instance, aluminium strip, is placed on roadbed 2 opposite to linear motor 4 of undercarriage. Fitted at side is three-phase electric bus 12 on which current collecting unit 13 of winding of linear motor 4 is installed. EFFECT: enlarged operating capabilities. 7 cl, 4 dwg
Patent RU-2016905-C1 (RU)
Title: Fur skin smearing machine
Inventor: VAJTKYAVICHYUS ARVIDAS A
IPC: C14B15/00
Filed: 1991-05-24
Granted: 1994-07-30
Abstract: FIELD: fur industry. SUBSTANCE: machine has a receiving table, a pair of feed rollers; a smearing member is made in the form of two brush shafts; a belt conveyor; and a hydraulic network. The smearing member is provided with a feeding perforated tube disposed parallel over the smearing member. The tube is connected by its two ends to the working fluid network. A pair of squeeze press-in rollers is disposed between the second brush shaft and the belt conveyor. A squeeze press-in roller is covered with a porous envelop to absorb the excess fluid and to distribute it evenly across the skin. The second squeeze press-in roller is provided with a smooth rigid water-repellent surface to ensure fluid pressing-in in the skin and to facilitate transportation. EFFECT: enlarged operating capabilities. 1 dwg
Patent RU-2027391-C1 (RU)
Title: Walking stick-seat
Inventor: SHELMANOV VITALIJ G
IPC: A45B5/00
Filed: 1991-05-29
Granted: 1995-01-27
Abstract: FIELD: consumer's goods. SUBSTANCE: walking stick-seat has rod with anti-skid device fixed on one end and provided with retainer and with adapter member secured on opposite end. Flat handle mounted on adapter member shaft may be conformed into seat. Rod is made composite, with telescopic parts. Lower telescopic part has captive nut and discrete annular recesses arranged along its length and adapted for receiving retaining balls, with space between annular recesses being equal to space between captive nut base and threaded portion leading part, which is engageable with captive nut and disposed on lower part of upper telescopic part. Threaded portion is formed as helical sleeve with circular opening for receiving retaining balls. Handle-seat pivotally fixed on other end of upper telescopic part by means of bracket is engageable with profiled plate, which is positioned in bracket and provided with mutually perpendicular openings for receiving spring-biased retainer rod mounted in handle-seat side, which is disposed below, when handle is used as seat. EFFECT: increased convenience. 3 dwg
Patent RU-2061691-C1 (RU)
Title: Method for production of stabilizing agent for halide-containing polyolefins
Inventor: BIGLOVA RAISA Z
IPC: C08K5/1545
Filed: 1991-06-11
Granted: 1996-06-10
Abstract: FIELD: production of polymers. SUBSTANCE: oligomer dihydric phenol being preliminary benzoylated is used as reagent 1. 3,4-dibromo-4-methyltetrahydro pyran is used as reagent 2. Reagent 2 and 4-methyl-5,6-dihydro-2H-pyran (said oligomer phenyloxy derivative being prepared during condensation) are treated by aqueous-alcohol solution of sodium hydroxide and affected by rearrangement at 170-190 C. Desired stabilizing agent improves thermal stability of chlorpolyethylene and chlorsulfopolyethylene. EFFECT: improves efficiency of method. 2 tbl
Patent RU-2068578-C1 (RU)
Inventor: ALAN FRIDERIK ARNOLD
IPC: G06F12/00
Filed: 1991-07-19
Granted: 1996-10-27
Abstract: Использование: в персональных системах. Целью изобретения является наделение персональной компьютерной системы способностью различать типы сменных сред, которые могут быть использованы устройствами прямого доступа к памяти со сменными средами, ассоциированными с такой системой. Цель достигается тем, что во вторую системную шину персональной компьютерной системы введены две магистрали для указания типа сред, введенных в запоминающее устройство прямого доступа со сменными средами. 5 ил.
Patent RU-2051903-C1 (RU)
Inventor: KOODZI KAGARA
IPC: C07C251/40
Filed: 1991-10-30
Granted: 1996-01-10
Abstract: FIELD: organic chemistry. SUBSTANCE: the product: (+)-(E)-4-ethyl-2-[(E)- hydroxyimino]-5-nitro-3-hexenamide. The yield is 82 %. Reagent 1: 2-ethylcrotonaldehyde. Reagent 2: diethyl phosphoneacetamide in the presence of potassium tret- butylate. Reagent 3: sodium nitrite and hydrochloric acid. EFFECT: more efficient preparation process.
Patent RU-2015123-C1 (RU)
Title: Glaze
Inventor: SHCHEPOCHKINA YULIYA A
IPC: C03C8/06
Filed: 1991-09-23
Granted: 1994-06-30
Abstract: FIELD: building materials. SUBSTANCE: glaze has, wt.-%: silicon oxide (45,0-50,0 БФ SiO 2 ) 45-55; aluminium oxide (6,0-7,0 БФ Al 2 O 3 ) 6-7; boron oxide (18,0-19,5 БФ B 2 O 3 ) 18.0-19.5; calcium oxide (CaO) 7.4-9.8; zinc oxide (ZnO) 7.5-8.0; cryolite (6,0-8,2 БФ Na 3 AlF 6 ) 6.0-8.2; barium oxide (BaO) 1-2, and sodium chloride (NaCL) 0.5-0.8. Fluorspar (БФ CaF 2 ) at concentration 0.3-0.5 wt.-% can be additionally added to the glaze composition. Glaze property: roasting temperature is 700-750 C. Glaze is used for coating building structures. EFFECT: enhanced quality of glaze. 2 cl, 1 tbl
Patent RU-2009787-C1 (RU)
Title: Device for machining difficult to work materials
Inventor: LIPATOV EVGENIJ K
IPC: B23C3/00
Filed: 1991-07-01
Granted: 1994-03-30
Abstract: FIELD: machining. SUBSTANCE: device has mandrel 1 with end mill 2, rotating current supply elements 3 and 4. The device has stationary current supply element 6 embracing the mandrel and current supply elements 3 and 4, liquid metal lead, for example, from a metal melt with melting temperature 333-420 K, which is in contact with rotating current supply elements 3 and 4 and heating elements 8 positioned in helical grooves on the inner surface of current supply element 6. Coils 11, 12 with cores 9, 10 form a seal device for lead 5. A power source and a cooling agent circulation device are connected to current supply element 6. EFFECT: improved structure. 2 cl, 4 dwg
Patent RU-2028132-C1 (RU)
Title: Method for prevention of ophthalmoherpes
Inventor: GRIPAS IRINA A
IPC: A61F9/00
Filed: 1991-07-01
Granted: 1995-02-09
Abstract: FIELD: medicine. SUBSTANCE: this method prescribes measuring amount of secretory immunoglobulin A both before and during vaccination in lacrimal fluid and circulating immune complexes in blood serum and determining capacity of human being's neutrophiles to restore nitroblue tetrazole. Disclosed method further prescribes determining number of vaccinations according to normalization of deficiency or hyperimmunoglobulinemia of secretory immunoglobulin A, excessive content of immune complexes and capacity of human being's neutrophiles to restore nitroblue tetrazole. EFFECT: lower rate of relapses during course of vaccinial prophylaxis; stabilization of patient's immune status.
Patent RU-2039872-C1 (RU)
Title: Labyrinth seal for radial gap of turbo-machine
Inventor: KUZNETSOV VALERIJ A
IPC: F01D11/08
Filed: 1991-07-05
Granted: 1995-07-20
Abstract: FIELD: mechanical engineering. SUBSTANCE: seal is constructed as a ring with combs which is mounted on the rotor and defines ring grooves, and honeycomb ring which encloses the grooves, is made up as Z-shaped ring ribs, and is secured to the stator. The width of each ring groove is equal to the height of the hollow of the Z-shaped rib. The profile of the cross-section of each ring groove is defined by the arc of the circumference whose center is located on the generatrix surface of the rotor ring. EFFECT: enhanced reliability. 2 cl, 6 dwg
Patent RU-2081874-C1 (RU)
Title: Cephem compounds and their pharmaceutically acceptable salts
Inventor: KAZUO SAKANE
IPC: C07D501/38
Filed: 1992-02-24
Granted: 1997-06-20
Abstract: FIELD: organic chemistry, antibiotics. SUBSTANCE: invention proposes new derivatives of cephem of the formula (I)   where: R 1  means amino- or protected amino-group; R 2  means lower alkyl that can be substituted with 1-3 halogen atoms; R 3  means COO ⊖ , carboxy- or substituted carboxy-group; R 4  means hydroxy(lower)alkyl or protected hydroxy(lower)alkyl; R 5  means amino- or protected amino-group; R 6  means hydrogen or lower alkyl; X ⊖  means trifluoroacetate; n = 0 when R 3  means COO ⊖  at condition that and n = 1 when R 3  means carboxy- or protected carboxy-group, and its pharmaceutically acceptable salt. Synthesized compounds show antibacterial activity. EFFECT: improved method of synthesis. 7 cl, 3 tbl
Patent RU-2008118-C1 (RU)
Inventor: LUTSET RUVIM M
IPC: B21D22/10
Filed: 1991-11-22
Granted: 1994-02-28
Abstract: Использование: изобретение относится к обработке металлов давлением и может быть использовано для различных видов деформирования концов труб (калибровка, развальцовка, зиговка и т. п. ). Сущность: устройство для деформирования концов труб содержит неподвижно установленный на станине матрицедержатель 1, инструментальный узел, состоящий из разъемной матрицы 2 и стержня 3 с эластичным пуансоном 4. Стержень 3 связан со штоком 5 силового цилиндра 6 посредством головки 7 и кулачков 8, размещенных в отверстиях головки 7 и подпружиненных пружинами 9. Кулачки 8 имеют возможность взаимодействия с профильными поверхностями 11 гильзы 12, охватывающей головку 7, и с канавкой 10 стержня 3. Устройство содержит узел фиксации матрицы. При рабочем ходе силового цилиндра 6 поршень последнего перемещает головку 7 вправо, кулачки 8 входят во взаимодействие с профильными поверхностями 11, сжимают пружины 9 и попадают в канавку 10. Далее стержень 3 движется вправо вместе с головкой 7, эластичный пуансон 4 сжимается концевой частью стержня 3 и осуществляет деформирование конца трубы. 1 з. п. ф-лы, 5 ил.
Patent RU-2051301-C1 (RU)
Title: Gear-belt transmission
Inventor: TURMENKO ANATOLIJ IVANOVICH
IPC: F16H7/02
Filed: 1991-07-04
Granted: 1995-12-27
Abstract: FIELD: mechanical engineering. SUBSTANCE: transmission has endless gear belt with centering members arranged on the inner side of the belt between teeth. The driving and driven pulleys have hollows on the outer surface. The hollows are answered to the centering members. The centering members are of various shapes. EFFECT: enhanced reliability. 15 dwg