baber/WOPTO huggingface dataset:
Patent CN-113595394-B (CN)
IPC: H02M3/158
Filed: 2021-10-08
Granted: 2021-12-21
Abstract: 本发明公开了一种基于飞跨电容三电平升压电路的母线控制方法及相关组件，在判断出母线上的电压将由第一电压减小至第二电压时，控制逆变器中的各个开关管动作，以使其由第一电压以预设速率逐步减小至第二电压，也即是由大电压逐步减小至小电压，从而可以避免母线上的电压突然减小，从而给飞跨电容三电平升压电路一定的反应时间，避免飞跨电容三电平升压电路产生过流的现象，提高飞跨电容三电平升压电路的可靠性。
Patent CN-113654848-B (CN)
Title: 一种石化污水取样采集器
IPC: G01N1/14
Filed: 2021-10-20
Granted: 2022-02-08
Abstract: 本发明涉及一种石油废液取样领域，尤其涉及一种石化污水取样采集器。技术问题：提供一种便于独自操作、一次性完成不同区段废液取样的石化污水取样采集器。技术方案如下：一种石化污水取样采集器，包括有检测组件、动力组件、抽气组件、储存容器组件、分段取样开关组件和沉淀物收集组件；检测组件设置在第一壳体内下部，动力组件设置在检测组件上方，抽气组件位于动力组件上，储存容器组件位于动力组件上方，分段取样开关组件设置在第一壳体内上部，沉淀物收集组件固接在第一壳体底部。本发明实现一次性完成多区段废液取样的效果，检测组件使本装置在下降过程中始终保持竖直，沉淀物收集组件实现对废液池底部沉淀物的抽取的效果。
Patent CN-113821019-B (CN)
Title: 一种fpga高速收发器及其动态控制方法
IPC: G05B23/02
Filed: 2021-11-22
Granted: 2022-03-04
Abstract: 本发明公开了一种FPGA高速收发器动态控制方法，包括如下步骤：对FPGA高速收发器进行故障测试，设置限制温度，采集测试过程中FPGA高速收发器温度到达限制温度的第一时长；散热器控制装置控制散热装置以峰值功率运行，采集测试过程中FPGA高速收发器温度到达限制温度的第二时长；根据第一时长和第二时长的比值，得到散热装置散热级数，根据第一时长和第二时长的差值，得到FPGA高速收发器的峰值速率极限运行时长，根据的峰值速率极限运行时长对FPGA高速收发器进行传输速率调整，通过本发明，可以实现让FPGA收发器适应不同的环境，并能够在不同环境中稳定正常的运行的作用。
Patent CN-114014941-B (CN)
IPC: A61P35/00
Filed: 2022-01-10
Granted: 2022-04-12
Abstract: 本发明涉及靶向IL13Rα2的嵌合抗原受体、编码所述嵌合抗原受体的核酸分子、包含所述核酸分子的载体、以及经工程化以表达所述嵌合抗原受体的免疫效应细胞(例如，T细胞、NK细胞)。本发明还涉及所述经工程化的免疫效应细胞的用途，用于治疗与表达IL13Rα2相关的疾病，例如，胶质瘤。
Patent CN-114092570-B (CN)
IPC: G05D23/20
Filed: 2022-01-21
Granted: 2022-05-10
Abstract: 本发明公开了一种深度相机温度标定方法及装置、电子设备、存储介质，该方法包括：获取深度相机依次从第一温度稳定状态、第二温度稳定状态到恒温状态的温升数据；在深度相机处于恒温状态下，采集深度相机不同延时的深度信息；通过所述不同延时的深度信息计算奇次谐波补偿值；利用所述奇次谐波补偿值对所述温升数据中的原始深度信息进行匹配补偿；根据补偿后的温升数据，计算温度系数；对正常运行的深度相机采集的深度信息，利用所述奇次谐波补偿值及温度系数进行温度补偿。本发明综合考虑影响温度标定的因素，使得温度补偿更加有效，提高了温度标定方法的可靠性，降低了温度对深度的影响。
Patent CN-114200090-B (CN)
Title: 一种实验室空气有害物质监测警报装置
IPC: G01N33/00
Filed: 2022-02-18
Granted: 2022-05-20
Abstract: 本发明属于监测警报领域，具体的说是一种实验室空气有害物质监测警报装置，包括移动装置，所述移动装置的顶部设置有安装柱，且移动装置的顶部与安装柱的底部固定连接，所述安装柱的顶部设置有连接装置，且安装柱的顶部与连接装置的底部活动连接，所述连接装置的顶部设置有固定柱，且连接装置的顶部与固定柱的底部固定连接，所述固定柱的外表面与固定装置的内壁活动连接，所述固定装置的正面设置有监测装置，且固定装置的正面与监测装置的背面固定连接，针对现有技术的不足，本发明提供了一种实验室空气有害物质监测警报装置，解决了传统监测报警装置在长时间使用后容易出现监测灵敏度下降的问题。
Patent CN-114266030-B (CN)
Title: 基于二维图形的访问认证方法、装置、设备及存储介质
IPC: G06F21/34
Filed: 2022-03-01
Granted: 2022-06-17
Abstract: 本申请公开了一种基于二维图形的访问认证方法、装置、设备及存储介质，该方法包括：根据预先设置的认证规则形成随机的第一二维图形，所述第一二维图形中的每个标志点对应服务器中的若干认证端口；开启第一二维图形中各所述标志点映射的认证端口；获取客户端的端口访问请求，根据所述认证规则将客户端请求访问的认证端口转换为第二二维图形，将所述第二二维图形与第一二维图形进行比对，若图形一致则认证通过；本发明将一维的服务器端口进行二维图形化，通过比较图形来对发出访问请求的客户端进行认证和过滤，该访问认证方式具有顺序无关性，可提高服务器运行的安全性和稳定性。
Patent CN-114388250-B (CN)
IPC: H01F41/00
Filed: 2022-03-25
Granted: 2022-06-03
Abstract: 本发明提供了一种基于3D光固化打印的电力电子变压器的封装工艺，涉及变压器封装技术领域。所述工艺包括如下步骤：打印骨架网络、浇注、施加电压、施加超声波、通电流、热固化、打磨；在封装最初采用环氧树脂打印骨架网络对铁芯和绕组进行定位固定，有效防止绕组在封装过程中松动或变形，采用含有填料的环氧树脂作为浇注体能够显著降低热阻和膨胀系数，提高散热性能，降低开裂风险；环氧树脂在高压电场中容易对固体发生电润湿；超声波具有提高浸润能力的特性，进一步提高含填料树脂与骨架网络的浸润效果；向绕组中通电，使绕组先发热，浇注体由内往外固化，允许外部树脂对缩孔进行自动补缩，从而显著降低封装内部缺陷，提高封装的可靠性。
Patent GE-P19981309-B (GE)
Title: Pipe Laying Machine
Inventor: GEELHOED JACK
IPC: F16L1/036
Filed: 1993-08-25
Abstract: This invention refers to laying pipes into the ground, in particular to pipelaying machines.    Technical result of the invention is to increase productivity and reliability of the work that is expressed in laying pipes into a trench without any damage.    A pipe laying machine comprises a means 2 for trench excavation, followed by a pipe laying box 3 made for receiving pipes 5 and a conveyer 1 for its transportation. A pipelaying box with sections on the bottom 20 comprises a pipe pusher 6 for connection of the successive pipe with the inserted into the trench pipe. The pipe laying machine, its pipelaying box and pipe container of the machine comprise the device for releasing pipes one above another from the magazine consisting of pipe holder and pipe release mechanism which is equipped by the means of release 44 of the lower pipe from the magazine into the “ready to release” position for holding and laying it into the bottom during release of the lower pipe from the magazine into the “ready to release” position 40 by the means of start up and stop 46 for the next pipe. The pipe holder and the pipe release mechanisms are made moveable from the first position in which the lower pipe in the magazine is in the “ready to release” position 40 for its release to the second position wherein the lower pipe from the “ready to release” position for the release is passed into the “ready to release” position for laying, after which the subsequent pipe from the magazine is ready to be passed into the “ready to release” position. The pipe laying and the pipe releasing mechanism comprises on one or on each wall of the lowermost pipe length 36 of said box a pair of support elements 48 and 50. The lower 50 or each pair of said support elements is made with the possibility of movement between the first position when it emerges in the pipe passing way for relase-holding of the lower pipe in the “ready to release” position and the second position when it is pushed in respect to the transient way, whereas the upper 48 from the pairs of support elements together with the lower 50 support element have the possibility of synchronous movement between the first position when it is pushed in respect to the transient way and the second position when it emerges in the transient way.    Each pair of the support elements 48 and 50 has the axle for rotation.    The support elements 48 or 50 are disposed on the end of the corresponding levers 44 or 46 which are disposed between the support element and its rotation axle.     3 ind. cl. 12 dep. cl.     4 fig.
Patent GE-P20074182-B (GE)
Title: Method for deformation of polymeric films
Inventor: PAVLENISHVILI INEZA
IPC: B29C53/00
Filed: 2005-10-20
Abstract: A method provides fastening a film in the clips established in the same plane and stretching. Thus, the film in clips is fixed in such a way that the length of one of the free sides of the film would be equal to the distance between the clips being between points of fastening of this side, and the length of the second free side would be greater than the distance between the points of fastening of this side.
Patent GE-P20146092-B (GE)
Title: Method of rifled arm fighting and exploiting characteristics complex improvement and abramyan rifled arm barrel
Inventor: ABRAMJAN RONALD
IPC: F41A21/18
Filed: 2009-01-30
Abstract: A method provides: bullet 7 forward mo¬ve¬ment at shooting by means of gunpowder gases; biting bullet into screw-shaped rifles 2 existed in a barrel channel 1; bringing bullet in rotation; air in¬jection existing in the barrel channel in front of bullet; and bullet movement in the back space 13 thereby means of executed on the barrel channel the wall on the fields 5 between rifles as continuous and/or longitudinal and/or inclined-longitudinal dis-continuous grooves of various lengths and/or ex¬ecuted with enlarged space of inclined-longitudinal grooves on some or all rifles adjacent and/or cro¬ssing thereof, and at bullet biting process in the rif¬les by means of executed therein inclined-lon¬gi¬tudinal slots 3, 4, 8 and 9. After reaching superso¬nic speed by bullet, compressed air movement is executed by means of discontinuous slots of small capacity, as well. At gunpowder gases pressure fa¬lling down, if before bullet flying throughout barrel the pressure in the space back of shell does not become less than compressed air pressure at bullet side 14 the air motion continues or is interrupted and gunpowder gases are discharged from the barrel channel by means of continuous or disconti¬nues grooves 6, which lengths are more than length of bullet lead part. Gunpowder gases are strike into separated from barrel cut 12 the wall decreasing arm recoil.
Patent GE-P201706739-B (GE)
Title: Compositions comprising vortioxetine and donepezil
Inventor: MORILLO CONNIE SANCHEZ
IPC: A61P25/28
Filed: 2013-12-12
Abstract: Composition contains vortioxetine, donepezil, and pharmaceutically acceptable filler.
Patent GE-P20237574-B (GE)
Title: Methods for treating conditions associated with masp-2 dependent complement activation
Inventor: DUDLER THOMAS
IPC: C07K16/40
Filed: 2016-11-09
Abstract: Present invention relates to a method of MASP-2 inhibiting monoclonal antibodies usage for the treating of thrombotic microangiopathies (TMA) related to hematopoietic stem cell transplant (HSCT-TMA).  	  s
Patent GE-P20074269-B (GE)
Title: Simulator-stabilizer for thick homogeneous structure of juices, soft drinks, non-alcoholic and alcoholic drinks
Inventor: MZHAVIA SHOTA
IPC: A23L2/00
Filed: 2004-11-29
Abstract: An extract of grape seeds is used for making thick homogeneous structure of juices, soft drinks, non-alcoholic and alcoholic drinks and stabilization thereof.
Patent DK-160217-C (DK)
Inventor: HANSEN LEO BLICHER
IPC: E04G23/02
Filed: 1986-02-05
Granted: 1991-07-15
Abstract: A method and a tool for increasing the width in the clear of a chimney, for instance for the cleaning of chimneys, combustion chambers, boilers and the like, which on internal surfaces are covered with coatings, e. g. tarry deposits, by means of strokes from chains. The tool is provided with a holder (4) located at the end of a rotatable shaft (6), to which holder are attached chains parts (5), e.g. consisting of simple, elongated chain links, so embodied that the chains (5) are located in several levels at right angles to the axis of rotation and are firmly fixed. In this manner several impacts at one single point are obtained, the chains being kept in their tracks by the neighbouring chains, thereby obtaining a much more effective and rapid chimney cleaning, just asto a large extent soot flakes are pulverized, whereupon they drop to the bottom in the chimney. The method and the tool may also be used for increasing the width in the clear in comparison with the original width in the clear, whereupon a chimney lining may be inserted.
Patent CA-1288547-C (CA)
Title: 1-(3-mercapto-2-methylpropanoyl) prolyl amino acid derivatives and salts thereof, processes for their preparation and pharmaceutical compositions containing such compounds
Inventor: NISHIMURA HARUKI
IPC: A61K31/40
Filed: 1979-07-06
Granted: 1991-09-03
Abstract: Abstract of the Disclosure 1-(3-Mercapto-2-methylpropanoyl)prolyl amino acid derivatives of the formula   wherein R represents a hydrogen atom, a lower alkyl group, a phenyl-lower alkyl group or a substituted phenyl-lower alkyl group, R1 represents a hydrogen atom, R4CO-, R5S-, or     , R2 represents a hydrogen atom or a lower alkyl group, R3 represents a hydrogen atom, a phenyl group, a lower alkyl group, or a substituted lower alkyl group, or R2 and R3 form a heterocyclic ring together with the nitrogen and carbon atoms to which they are respectively bonded; salts of these compounds; compositions comprising these compounds or salts; and processes for preparing these com-pounds or salts.  These compounds and salts have excellent antihypertensive activity.
Patent CA-1281329-C (CA)
Title: Lipoxygenase inhibitors
Inventor: ATKINSON JOSEPH G
IPC: C07D493/04
Filed: 1984-10-31
Granted: 1991-03-12
Abstract: TITLE OF THE INVENTION          LIPOXYGENASE INHIBITORS         ABSTRACT OF THE DISCLOSURE       Compounds of the Formula I:                   I     and pharmaceutically acceptable salts thereof are inhibitors of leukotriene biosynthesis.  These compounds inhibit the mammalian 5-lipoxygenase enzyme, thus preventing the metabolism of arachidonic acid to the leukotrienes.  These compounds are thus useful in the treatment of asthma, allergic disorders, inflammation, skin diseases and certain cardiovascular disorders.
Patent CA-1277984-C (CA)
Title: Optically active nitrodihydropyridines, a process for their preparation and their use in medicaments
Inventor: FRANCKOWIAK GERHARD
IPC: A61K31/445
Filed: 1985-12-20
Granted: 1990-12-18
Abstract: ABSTRACT           Pure (+)- and (-)- enantiomers of the formula   and salts thereof.  Surprisingly the individual enantiomers have more or less opposite effects from one another with regard to vasodilation and inotropy on heart muscle.
Patent CA-1292167-C (CA)
Title: Composition aseptisante pour lentilles de contact
Inventor: LE ROUZIC DANIEL
IPC: A61L12/12
Filed: 1986-01-28
Granted: 1991-11-19
Abstract: La présente invention a une composition aseptisante. Cette composition est constitués par une solution aqueuse stable à base de peroxyde d'hydrogène contenant de l'acide peracétique à faible concentration. Prête à l'emploi, cette composition est particulièrement adaptée au traitement quotidien d'aseptisation des lentilles de contact, notamment des lentilles de contact souples.
Patent CA-1339606-C (CA)
Title: Polypeptides complementary to peptides or proteins having an amino acid sequence or necleotide coding sequence at least partially known
Inventor: BLALOCK J EDWIN
IPC: C12Q1/68
Filed: 1986-02-26
Granted: 1997-12-30
Abstract: A method for determining the amino acid sequence of a polypeptide complementary to at least a portion of an original peptide or protein.  In one aspect the method involves:  (a) determining a first nucleotide sequence of a first nucleic acid coding for the biosynthesis of at least a portion of the original peptide or protein; (b) ascertaining a second nucleotide sequence of a second nucleic acid which base-pairs with the first nucleotide sequence of the first nucleic acid, the first and second nucleic acids pairing in antiparallel directions; and (c) determining the amino acid sequence of the complementary polypeptide by the second nucleotide sequence when read in the same reading frame as the first nucleotide sequence.                      The complementary polypeptide whose amino acid sequence is thus determined may be obtained by diverse means such as, for example, chemical synthesis, derivation from a protein or larger polypeptide containing said amino acid sequence, or, when the second nucleic acid is DNA, inserting the second nucleotide sequence into a plasmid to form a recombinant DNA plasmid vector and transforming a unicellular organism therewith to produce a transformant unicellular organism biosynthesizing said complementary polypeptide.     The ascertainment of particular nucleotide sequences may be circumvented, in one aspect, by utilizing the relationships of amino acids having complementary hydropathies for substitutions as generally dictated by base-pairing nucleotide complementarity.
Patent CA-1277871-C (CA)
Title: Air cooled combustion chamber wall
Inventor: SCHWALB MAX
IPC: F27D1/00
Filed: 1986-09-15
Granted: 1990-12-18
Abstract: ABSTRACT            The invention relates to an air cooled combustion chamber wall for combustion furnaces, consisting of at least one wall with interstices for guiding cooling air along the side of the wall remote from the combustion chamber side.  In order to obtain a simple, stable and effective design, it is proposed that the said wall be built of bricks, the walls of which enclose at least one air passage.
Patent CA-1290846-C (CA)
Title: Means for electrically connecting electrodes on different surfaces of piezoelectric polymeric films
Inventor: RADICE PETER F
IPC: H01L41/04
Filed: 1986-09-29
Granted: 1991-10-15
Abstract: - i -Abstract of Disclosure Electrodes with leads deposited on different surfaces of a piezoelectric polymeric film or films are easily and quickly electrically connected by forming a continuous channel through the film and lead  to form a pierced lead, and then applying an electrically conductive material, by any one of several known processes, onto the film over the channel to thereby form a connecting lead, the conductive material being permitted to penetrate the channel to effect a continuity of conductive material between the pierced lead and connecting lead.
Patent CA-1280542-C (CA)
Title: Chlorinated rubber
Inventor: TOJO TETSUO
IPC: C08F8/20
Filed: 1986-10-30
Granted: 1991-02-19
Abstract: Abstract of the Disclosure A chlorinated rubber having a chlorine content of 10 to 45% by weight based on the weight of the chlorinated rubber and a Mooney viscosity, ML1+4 (121°C), of 10 to 190 is obtained by chlorinating an ethylene/alpha-olefin/non-conjugated diene copolymer rubber containing 5-vinyl-2-norbornene as the non-conjugated diene.  The chlorinated rubber has excellent processability in roll milling, extrusion, etc.
Patent CA-1326977-C (CA)
Inventor: WITTNEBEL BRUCE W
IPC: B32B7/02
Filed: 1987-01-27
Granted: 1994-02-15
Abstract: ABSTRACT           This invention relates to transparent sheet material suitable for making transparencies in plain paper electrostatic copiers.          When transparent, polymeric sheets are imaged in a conventional electrostatic copying machine, static charge on the surfaces of the sheets causes them to jam the machine or to pass through the machine without having an image formed thereon.  Jamming can be caused by multiple feedings of sheets, i.e. more than one sheet entering the imaging zone of the copier at the same time.  Multiple feeding can result from two or more sheets clinging together on account of static charge or excessively high coefficient of friction.  While excessively high coefficient of friction can be reduced by proper selection and/or treatment of the surface material of the transparency sheet, it is desired to provide treatment to the transparent sheet material to reduce static charge, thus resulting in fewer jams and fewer unimaged sheets.          This invention provides transparent sheet material for use in plain paper electrostatic copiers comprising (a) a flexible, transparent, heat resistant, polymeric film base, (b) an imaging receiving layer carried upon a first major surface of the film base, and (c) a layer of electrically conductive prime coat interposed between the image receiving layer and the film base.  This sheet material can be used in either powder-toned or liquid-toned plain paper copiers for making transparencies.
Patent CA-1278034-C (CA)
Title: Cathodic electrode
Inventor: ANDERMAN MENAHEM
IPC: H01M50/489
Filed: 1987-03-23
Granted: 1990-12-18
Abstract: CATHODIC ELECTRODE                         ABSTRACT    A polymer bonded sheet product suitable for use as a cathodic electrode in a non-aqueous battery system wherein the cathodic electrode is a microporous sheet composed of from 6 - 10 weight percent polyethylene having a molecular weight of 200,000 to 500,000, 90 - 94 weight percent of titanium disulfide particulate material and from 0 to 2 weight percent of a plasticizer for the polyethylene; the sheet having a void volume of from 15 to 25 percent.
Patent CA-1293847-C (CA)
Title: Fluid purification system
Inventor: NOLL JOHN R
IPC: A61L2/24
Filed: 1987-04-27
Granted: 1992-01-07
Abstract: ABSTRACT OF THE DISCLOSURE       A fluid purification system includes an elongated ul-traviolet radiation emitting tube and independent fluid flow-controlling conduits.   Each conduit is transparent to allow ultraviolet light emitted by the tube to enter the conduit, and defines a continuous, and is helically wound closely about the tube to insure that fluid flow through the conduits is exposed to the ultraviolet light.  The system includes a filter having inlet and outlet ports.  An end of each conduit is connected to one of the inlet and outlet ports of the filter.   The system thus exposes the fluid to ultraviolet radiation both before and after the fluid is filtered.
Patent CA-1279466-C (CA)
Title: Method for installing elevator doors
Inventor: PENICAUT ALAIN M R
IPC: E04F17/00
Filed: 1987-07-09
Granted: 1991-01-29
Abstract: Abstract Method For Installing Elevator Hall Doors A method is disclosed for installing a hall door on a floor when the elevator rails or car are not installed.  A template is placed at one terminal or end of the elevator shaft and is used to locate the position of a temporary bracket containing three holes which are spaced apart to correspond with three marks along the sill of the elevator door assembly.          The holes are on a common line and are at a preestablished distance from the wall of the shaft.     Once this bracket is installed in the shaft, a plumb line is extended from each of the holes to another bracket below.  The plumb lines hang next to the floor on which a hall door is to be installed.  This other bracket is positioned so that the plumb line passes through the center of a corresponding hole in the bracket.  A door alignment tool is positioned between the sill of the door and each of the plumb lines, and the thickness of the tool, which defines the setback distance between the door and the plumb lines, establishes the setback distance between the door and the edge of the shaft.  The tool is used in this manner with each plumb line and on each floor for each door thereon in an installation process that provides for correct orientation of the door sill relative to the lines and thereby also the correct orientation relative to the template, which is keyed to location of the elevator rails or car, which are subsequently installed.  After the door is plumbed to the floor, it is permanently attached to the floor and walls of the building.
Patent CA-1290640-C (CA)
Title: Antifoam ingredient
Inventor: GARRETT PETER R
IPC: C11D3/10
Filed: 1987-08-04
Granted: 1991-10-15
Abstract: C.3128 US     ABSTRACT            A particulate antifoam ingredient suitable for incorporation into a detergent powder comprises an antifoam active material, for example, a mixture of silicone oil, petroleum jelly, hydrophobic silica and alkyl phosphate, sorbed onto a porous absorbent water-soluble carbonate-based inorganic carrier of high pore volume and pore diameter, for example, light soda ash or crystal-growth-modified Burkeite.
Patent CA-1314817-C (CA)
Title: Filter for hot melt adhesive
Inventor: BURDETTE DAVID L JR
IPC: B01D29/62
Filed: 1987-08-19
Granted: 1993-03-23
Abstract: Abstract of the Disclosure A filter for hot melt adhesive is carried within a passageway in a manifold and is rotatable therein between a filtering position in which hot melt adhesive is directed to the inner core of the filter at one end thereof,  and a backflushing position in which hot melt adhesive is directed onto the outside surface of the filter at the opposite end thereof.  In the filtering position, the hot melt adhesive flows from the inner core outwardly through a filter screen into the main passageway for collection and discharge from one end of the manifold.   In the backflushing position  the  adhesive  flow  is  directed  from  the outside surface of the filter in the reverse direction through the filter screen to dislodge filtered impu-rities therefrom, and then the impurities are carried out a drain at the opposite end of the manifold.
Patent CA-1340479-C (CA)
Inventor: CLEMENCE FRANCOIS
IPC: C07C303/40
Filed: 1987-08-21
Granted: 1999-04-06
Abstract: 1/2 L'invention concerne des composés de formule (I) et leurs sels pharmaceutiquement acceptables: <IMG> dans laquelle R6 est H, halogène, alkyle (1 à 5 C), alkoxy (1 à 5 C), R1 et R2 sont H ou alkyle (1 à 5 C) ou forment un radical cycloalkyle (3 à 6 C) renfermant ou non un O, S ou N; A et B représentent: - soit <IMG> R = H ou alkyle (1 à 5 C), Z est -CH2-O- ou une chaîne alkylène linéaire -(CH2)n- (n = 0 à 5) ou ramifiée (2 à 8 C), X, X' et X" sont H, alkyle (1 à 4 C), alkoxy (1 à 4 C), halogène, OH, CF3 NO2, NHalc1, <IMG> - soit <IMG> 2/2 R3 et R4 sont H ou alkyle (1 à 5 C) ou forment avec l'azote auquel ils sont liés un hetérocycle à 5 ou 6 chaînons comportant ou non 0, N ou S; A et B ne peuvent être choisis à la fois dans l'un et l'autre de ces 2 groupes aminés. L'invention concerne également un procédé pour la préparation de ces composés qui sont notamment utiles comme médicament et en particulier comme analgésiques centraux. L'invention concerne en outre des intermédiaires utiles pour la préparation desdits composés de formule (I).