baber/WOPTO huggingface dataset:
Patent EP-1091869-B1 (EP)
Inventor: HEMPHILL DOUGLAS
IPC: B63B7/08
Filed: 1999-06-23
Granted: 2003-12-10
Abstract: An automatically inflatable boat including at least two separate compartments which are connected to one another by an intercommunicating valve which can be opened to connect adjacent compartments or closed to isolate adjacent compartments. The inflatable boat is provided with a gas pump permanently mounted on the boat and in fluid communication with a connection for receiving pressurized gas of at least one of the inflatable compartments. The pump can be actuated in order to automatically inflate the inflatable compartments of the boat to a preset pressure. Also shown is an inflatable enclosure which can be deflated and inflated and to house an adult and a commode to provide privacy.
Patent EP-1114500-B1 (EP)
Inventor: PAWELLEK JUERGEN
IPC: H02K15/12
Filed: 1999-09-13
Granted: 2003-05-02
Abstract: L'invention concerne un procédé de production d'un noyau feuilleté de stator de moteur électrique comprenant au moins un noyau feuilleté de stator formé de lamelles de tôle empilées par couche et de lamelles de tôle consistant en pôles mécaniques individuels et en pôles interconnectés dans le sens périphérique du stator, au moins une tige polaire et au moins une pièce polaire faisant face au rotor. Les lamelles de tôle présentent des empreintes se présentant de manière que les faces opposées desdites lamelles de tôle comportent des parties saillantes. Lesdites lamelles de tôle forment le noyau feuilleté, par engagement mutuel de ses empreintes et de ses parties saillantes. Ce moteur comprend également des enroulements des pôles mécaniques du noyau feuilleté du stator, des entretoises entre les pôles qui relient les pôles mécaniques interconnectés dans le sens périphérique. La configuration axiale des lamelles de tôle du noyau feuilleté présente une alternance prédéterminable des pôles à entretoise de jonction et des pôles sans entretoise de jonction.
Patent IE-83646-B1 (IE)
Title: Intermediates for the preparation of oxime ethers
Inventor: ISENRING HANS PETER DR
IPC: C07C251/32
Filed: 1991-06-04
Abstract: The invention relates to novel compounds of the formula <IMAGE> in which R1 is C1-4-alkyl and (Y-X) is CH2, C1-2-althio-CH= or C1-2-alkyl-ON=, and Z is an aldimino or ketimino group, and their preparation, and fungicidal agents containing such active compounds as active ingredients. The compounds can be used for controlling fungi in agriculture, horticulture and in the protection of wood.
[EP0460575A1]
Patent IT-1286808-B1 (IT)
Title: Product aligner device esp. for wrapping of sweets and chocolate - has rotating disc with top surface profiled so as to generate forces counteracting centrifugal force acting on advancing products supported by disc
Inventor: SPATAFORA MARIO
IPC: B65B/
Filed: 1996-12-05
Granted: 1998-07-17
Abstract: The product aligner includes a drum (25), and inside the drum, a disc (3) rotatable about a vertical axis (5) and with a top surface (4) on which products are taken up from an infeed belt and through the agency of centrifugal force aligned and oriented and directed onto a conveyor belt extending toward a manufacturing machine. At least one portion (4a) of the top surface presented by the disc exhibits an upwardly directed concave profile establishing a path (8) along which the effects of centrifugal force on the products in movement over the top surface are counteracted and controlled. Preferably, the products are diverted and guided by means of a wall operating in conjunction with the disc which extends along a spiral course departing from a discharge point and terminating at the outfeed station.
Patent IT-1278392-B1 (IT)
Title: Milking trolley for sheep and goats with lateral translation complete with self-capturing cages
Inventor: CAVALLI ROBERTO
IPC: A01K/
Filed: 1994-04-21
Granted: 1997-11-20
Abstract: Milking trolley complete with cages which permits the lateral translation of the sheep captured, for the purposes of permitting fast, rational, safe and ecological milking with the aid of mechanical milkers. <IMAGE>
Patent IT-1304188-B1 (IT)
Title: Beverage machine using liquid heating and pressurization prior to trickling through a substance in a filter with a back pressure device to produce high and thick creaminess
Inventor: BOIDO VALENTINO
IPC: A47J/
Filed: 1998-12-18
Granted: 2001-03-08
Abstract: Liquid is heated and pressurized to pre-set temperature and pressure and is then trickled through a pre-set amount of a solid substance (20) in a filter (4). The filter is coupled to a seat (3) so that the infusion formed in the filter is prevented from coming out of the seat (22). A back pressure means (6) is coupled to a second seat (5), downstream of the first seat. The back pressure means includes a valve and is designed such that infusion can only take place when a pre-set pressure is exceeded. The back pressure means includes a fast coupling to the filter holder.
Patent IT-1280122-B1 (IT)
Title: Crystalliser with increased heat for continuous casting
Inventor: PAVLICEVIC MILORAD
IPC: B22D/
Filed: 1995-02-06
Granted: 1998-01-05
Abstract: Crystalliser for continuous casting of billets or blooms 24 associated with an ingot mould 10, said crystalliser 11 comprising a box structure the walls of which co- operate externally with cooling chambers 14 in which coolant fluid circulates, and internally with the skin of the billets or blooms 24 being formed, there being intermediate walls 20 in the cooling chamber 14 creating circulation channels 21 with the external faces 12 of the crystalliser 11, there being at least one top zone co- operating at least with the part below the meniscus of liquid metal and a bottom zone initiating around the zone of detachment of the skin being formed by the internal face of the crystalliser 11, and extending towards the exit of the crystalliser 11 itself, with the walls having a thickness between 4 and 10 mm, the width of the circulating channel 21 being less than the width of the associated part of the crystalliser 11 and at least one wall of the circulating channel 21 having coolant fluid glow perturbator elements 18. <IMAGE>
Patent IT-1280296-B1 (IT)
Title: Automatic machine for rewinding with adjacent turns
Inventor: MARANGONI GIANLUIGI
IPC: B65H54/58
Filed: 1995-03-28
Granted: 1998-01-08
Abstract: This relates to an automatic machine for rewinding with adjacent turns which has a wire winding unit 1 comprising a stacker 2 on which are loaded empty spools 3 and a mandrel supporting structure 4 provided with a moving flange 5 and a fixed counterflange 6. One of the fundamental features of the invention lies in the fact that the said stacker is of the "revolver" type and has a plurality of pairs 7 of stacking blades. <IMAGE>
Patent JP-2864013-B1 (JP)
Title: 弦楽器の力木による棹振動と駒振動との同調構造
IPC: G10C3/06
Filed: 1998-03-14
Granted: 1999-03-03
Abstract: 【要約】
【課題】  弦振動伝達において、駒側の振動は表板の上 面から、また、棹側の振動は表板の裏面から、直接、胴 表板の全体へ伝達する構造により、弦楽器の発音特性を 大幅に向上させる。
【解決手段】  棹振動伝達部材１そのものは、その先端 の切断面が、棹を接続する前の胴外二箇所へ露出し、こ の露出面を胴外ヘッド部Ａとし、棹を胴へ接続後は、棹 末端の棹切断面Ａと胴外ヘッド部Ａとは直結し、小胴側 から胴の中央部にかけての表板裏面では、該当弦楽器の 音響孔を避け、大胴側の任意位置の既存力木まで連続す る長さを有し、左右対称に配置して、棹振動伝達部材１ の先部分と、棹末端の胴への接続部との接触面積を可能 な限り広くするために、棹切断面Ａと胴外ヘッド部Ａと の直結の他に、棹振動伝達部材１の先部分の側面と胴接 続用突起部側面との接触、及び、胴内ヘッド部ａ・側板 接合部材５等との接触を含む、最低二箇所以上の接触箇 所を必要とする。
Patent JP-2964081-B1 (JP)
Title: 電子・磁気媒体収納ケース用仕切り板、仕切り板付き電子・磁気媒体収納ケース
IPC: B65D85/57
Filed: 1998-06-18
Granted: 1999-10-18
Abstract: 【要約】
【課題】  従来の仕切り板は、その表面或は表裏に突設 した隣接する突起の間に複数種の厚みの電子・磁気媒体 を略垂直に係止することができなかった。本発明が解決 しようとする課題は、以上のような欠点に鑑み、仕切り 板の隣接する突起の間に複数種の寸法が異なる電子・磁 気媒体を係止可能とした電子・磁気媒体収納ケース用仕 切り板、仕切り板付き電子・磁気媒体収納ケースを提供 することを目的としている。
【解決手段】  請求項１の電子・磁気媒体収納ケース用 仕切り板は、複数の電子・磁気媒体を収納可能な収納部 を備えた電子・磁気媒体収納ケース内に挿脱可能な仕切 り板であって、その仕切り板本体に形成され、電子・磁 気媒体の一端或は一側を挿入可能な孔を備えていること を特徴とする。
Patent NO-332836-B1 (NO)
Inventor: HOFMANN THOMAS
IPC: C04B40/00
Filed: 2001-02-15
Abstract: An accelerating admixture for sprayed concrete comprises: (a) the reaction product of aluminium hydroxide with an organic acid; (b) aluminium sulphate; and (c) at least one alkanolamine. Concrete to which accelerator has been added sets rapidly.
Patent NO-319544-B1 (NO)
Inventor: FILSNOEL YANN
IPC: H02B1/20
Filed: 2001-05-30
Abstract: Connection pins (22A,22B) are located inside slots (30A,30B) formed in a face (16) of the plug in modules housing (14). The pins are insulated from the exterior by a protection bridge which extends along the pin alignment and allows insertion of distributor grip contacts (24A,24B). The phase contact (22A) and/or neutral contact (22B) is mounted in an insulating support. The insulating support includes a first tongue receiving the phase connector and a second tongue for the neutral connector. The disconnector includes an insulated housing (14) having a lateral connection face (51) and a back face designed to be fitted to a fixing rail (18), terminals (46) accessible from the face (51), and; at least a conducting pin (22A,22B) extending perpendicularly from the face (16) which engage into grip contacts (24A,24B) on the distributor (12).
Patent NO-321521-B1 (NO)
Inventor: HERDER PETER
IPC: F16B11/00
Filed: 2001-06-05
Abstract: Load-bearing structure comprising at least two layers (10, 20, 155, 160, 300, 310) joined by a bond line having a thickness of t mm, a shear strength of T N/mm2, and comprising a sheet (30, 130, 320) made of an elastic material having a shear modulus of G N/mm2, whereby tT2/G is at least 5 N/mm. A method for producing such a load-bearing structure in which a sheet (30, 130, 320) of rubber is treated with an oxidant, excess oxidant is removed, whereafter the sheet is glued between the two layers (10, 20, 155, 160, 300, 310).
Patent NO-322498-B1 (NO)
Inventor: THORSO HOLGER
IPC: B65D43/06
Filed: 2002-02-05
Abstract: The invention relates to a package of a plastics material and consisting of a container and a lid adapted to be engaged with each other by snap engagement, there being provided complementary engagement faces which engage each other for establishing said snap engagement. An annular resilient sealing member is arranged between the engagement portion (40) and the bottom wall (19). The invention is characterized in that an axial compression of the sealing member (23) is provided during application of the lid (10), said compression being partially relieved when said engagement faces (29, 42) engage each other.
Patent NO-336452-B1 (NO)
Title: Rørformet setteverktøy
Inventor: BOULIGNY VERNON JOSEPH
IPC: E21B19/07
Filed: 2002-08-09
Abstract: Et forbedret rør/kjøringsverktøy (14) er beskrevet for bruk på en rotasjons- eller toppdriv borerigg av den type for innsetting og selektiv, intern griping av en rørdel som kan være benyttet til å løfte, senke, rotere, og dreie rør, og som kan brukes til å fylle og/eller sirkulere fluidum inn i og ut av rør inne i brønnhullet. Det interne rør/kjøringsverktøy kan brukes som eller i forbindelse med oppfylling og sirkuleringsverktøy, og med sementeringshode/- skrapepluggenheter, blant andre verktøy. Rør/- kjøringsverktøyet omfatter en forbedret bevegelsesmekanisme (100) som bar et sylindrisk pneumatisk kammer (106), plassert i ringform i forhold til et rørelement (54) som danner en aksiell fluidumbane gjennom den. Et sylindrisk stempel (104) er bevegelig inne i det sylindriske kammer for dermed å bevege en sylindrisk stempelstang (102) forbundet med gripende stoppkiler (62) slik at stoppkilene selektivt engasjerer et indre område av rørdelen.
Patent NO-330161-B1 (NO)
Inventor: BEGGS KEVIN WILLIAM
IPC: B23Q9/02
Filed: 2003-01-20
Abstract: Apparatus for positioning and holding a tool ( 3 ) relative to a workpiece ( 35 ) comprising a carriage ( 1 ) for conveying the tool over the surface of the workpiece ( 35 ) and means ( 7, 9, 11, 13 ) for holding the carriage ( 1 ) onto the surface of the workpiece ( 35 ), the holding means being selectively switchable between a low grip state in which the carriage ( 1 ) is held against the workpiece surface whilst remaining capable of movement relative thereto and a high grip state in which the carriage ( 1 ) is held substantially fixedly to the workpiece surface for the tool ( 3 ) in use to operate thereon. Such an arrangement provides a robot capable of "crawling" over a workpiece ( 35 ) and carrying out precise manufacturing operations thereon.
Patent NO-326490-B1 (NO)
Inventor: BARONI MARCO
IPC: A61P/
Filed: 2004-04-16
Abstract: The present invention relates to compounds of formula (IIIo): in which n is an integer from 1 to 5; Ao represents a partially saturated carbonaceous bi- or tricycle; it also relates to their salts, solvates, N-oxides, the pharmaceutical compositions containing them, a method for their preparation and synthesis intermediates in this method.
Patent NO-329832-B1 (NO)
Title: Veivlagermontasje
Inventor: WAAGE-RASMUSSEN EINAR
IPC: F02F7/00
Filed: 2009-04-29
Abstract: Veivlagermontasje (1) for en resiprokerende fluidmaskin hvor veivlagermontasjen (1) omfatter en aksel (2) med et samroterende første eksenter (4) som omkranses av et andre eksenter (8) hvor det andre eksenter (8) er forstillbar om det første eksenter (4), og hvor det andre eksenter (8) omkranses av et lager (10) og et veivlagerhus (14), idet det andre eksenter (8) ved hjelp av en kopling er koplet til en akselhylse (28) som er konsentrisk dreibar om akselen (2), og hvor koplingen omfatter en medbringer (32) som samroterer med akselhylsen (28) og hvor medbringeren (32) på en radiell avstand fra akselens (2) senterakse (12) er forsynt med en sleidebolt (36) som rager inn i et spor (44) i et sleidehus (40) hvor sleidehuset (40) er fast forbundet til det andre eksenter (8).
Patent NO-336861-B1 (NO)
Title: Oppsamlingsbeholder for spisse gjenstander
Inventor: FJELLAKER FRITZ
IPC: A61M5/32
Filed: 2013-07-10
Abstract: Fremgangsmåte og oppsamlingsbeholder (1) for spisse gjenstander (2) hvor oppsamlingsbeholderen (1) omfatter en beholderdel (4) og et lokk (6) som lukkbart dekker en åpning (16) i beholderdelen (4), og hvor åpningen (16) er forsynt med en kniv (24) 5 som er innrettet til kunne kutte en sprøytes (30) koplingsrør (36).
Patent PL-160048-B1 (PL)
Title: The method of measurement of the velocity of gas flow as well as the installation for measurement of the velocity of gas flow
IPC: G01P/
Filed: 1988-05-05
Abstract: 1. A device for measuring gas flow speed, containing a heated probe located in the flowing gas with temperature-sensitive elements located at the external surface of the probe and on its holding part, characterised in that the probe has a heat radiator (2) and a screen (1) located opposite it, and the space (5) between these elements is open.<IMAGE>
Patent PL-158400-B1 (PL)
Title: Method of planting seedlings with soil lumps and apparatus therefor
IPC: A01C11/00
Filed: 1988-07-25
Abstract: This invention relates to an automatic method for planting balled seedlings grown in container trays. According to this invention, the balled seedling (7) is removed from the container by taking hold of it from the top with a fork-like gripping element (16) and transferring it into the ground. For this, a gripping prong (16) which remains in position at the gripping stage and into which the seedling is pushed is used. The seedlings can be planted without breakage or problems and in the correct position.
Patent PL-161349-B1 (PL)
IPC: F16L59/06
Filed: 1989-02-13
Abstract: 1. Urzadzenie do utwardzania cylindry- cznych izolacyjnych rynien zawierajace dwu- czesciowa forme oraz srodki do przeprowa- dzania utwardzajacego powietrza poprzez forme i przedkówke izolacyjnej rynny nawinie- tej na rdzeniu umieszczonym w tej formie, znamienne tym, ze dwuczesciowa forma (1, 2) zawiera wewnetrzna czesc (1) majaca zasadni- czo pólcylindryczna powierzchnie wewnetrzna zakonczona po obu wzdluznych bokach pro- wadzaca krawedzia (5) i zewnetrzna czesc (2) posiadajaca wewnetrzna powierzchnie zawie- rajaca zasadniczo pólcylindryczna czesc, która po obu wzdluznych bokach pozostaje w pro- wadzacej wewnetrznej powierzchni (6) zacho- wujac blizsza stycznosc z prowadzacymi kra- wedziami (5) zewnetrznej czesci (2) zanim nastapi zamkniecie. FIG 1 PL
Patent PL-160252-B1 (PL)
Title: Method for fuel production
IPC: C10L1/04
Filed: 1989-03-28
Abstract: 1. A method of producing fuel by mixing known fuels of petrochemical origin, heater oil, diesel oil, mazout with coal tars non-mixing with them or fractions produced from them as a result of distillation characterised in that a mixture of large-particle aromatic hydrocarbons received as the residue after the distillation of coke benzoyl or its fraction is used as a homogenisation factor producing steady mixtures of both types of liquids.
Patent PL-162020-B1 (PL)
Title: Supply unit for air bombs igniters
Inventor: KURKIEWICZ JAN
IPC: F42C11/00
Filed: 1990-03-21
Abstract: Power supply circuit for an aerial bomb detonator made in the form of a block of electronic circuits performing the individual functions of the detonator, characterized in that it consists of at least one capacitor (C1...C4) with high capacitance connected through the contacts of the circuit (4, 5) to contacts (1, 2) situated on a segment of the release beam (3) of a known electrical release mechanism for an aerial bomb, these contacts (1, 2) being connected to the current generator of a device supplying power to the aircraft's on-board electronic circuits.<IMAGE>
Patent PL-170616-B1 (PL)
Title: Method of expressing ahas enzyme of specific immunity to imidazolinone in cells of host's tissue, method generating a vector for giving such specific immunity, method making plant cells immune to imidazolinone, method of growing plants exhibiting such specific immunity and method of selecting effectively transformes cells of host's tissue
Inventor: DIETRICH GABRIELE E
IPC: C12N15/87
Filed: 1992-07-30
Abstract: The present invention relates to monocot genes encoding a mutant AHAS enzyme that is specifically resistant to imidazolinone herbicides. Exemplary of these genes are corn DNA sequences which encode an amino acid substitution at position 621 of the wild-type AHAS enzyme. The mutant gene can be used to transform other plants to herbicide resistance; in this regard, the invention also provides host cells and vectors containing the gene, which cells and vectors are useful in the transformation process.
Patent PL-172187-B1 (PL)
Title: Method of obtaining high quality fibre from cellulosic waste materials of mixed grades d
Inventor: HANKINS CHARLES W
IPC: D21C9/16
Filed: 1993-02-22
Abstract: This invention provides an integrated system for recovering fibers from mixed grades of waste paper and simultaneously cleaning (deinking) waste fibers. The system comprises a mild alkaline pulping process with oxygen and hydrogen peroxide followed by rapid decompression of fibers and then by hot washing. <IMAGE>
Patent PL-173858-B1 (PL)
Title: Method of using a fibrynic binder and fibrine containing aqueous composition
Inventor: EDWARDSON PETER A D
IPC: A61K38/39
Filed: 1993-10-08
Abstract: The subject invention relates to fibrin sealants. More specifically, the subject invention relates to the use of a fibrin sealant wherein a composition comprising fibrin monomer or a composition comprising noncrosslinked fibrin is utilized as a component of the fibrin sealant. <IMAGE>
Patent PL-172741-B1 (PL)
Inventor: UCIESZYNSKI RYSZARD
IPC: E21D11/22
Filed: 1994-02-03
Abstract: 1. Łącznik kątowy profili górniczych
krzyżujących się pod kątem prostym złożony
z jarzma z kołnierzami i śruby kabłąkowej
lub hakowej z nakrętkami, znamienny tym,
że kołnierze (1a, 1b)jarzma (1) są przesunięte
względem siebie tak, że linia łącząca środki
otworów (2) montażowych w kołnierzach
tworzy z osią (3) wzdłuzna jarzma kąt (a)
ostry mieszczący się w przedziale 45° ± 15°,
przy czym odległość (a) pomiędzy otworami
(2) mierzona równolegle do osi (3)jestrówna
co najmniej sumie szerokości (s2) kształtownika
(7) obudowy i średnicy (d) śruby (4)
kabłąkowej lub hakowej, natomiast odległość
(b) pomiędzy otworami (2) mierzona
prostopadle do osi (3)jest równa co najmniej
sumie szerokości (sf) kształtownika (6) podciągu
i średnicy (d) śruby.
Patent PL-174101-B1 (PL)
Inventor: NOWAK EMIL
IPC: E21F7/00
Filed: 1994-07-11
Abstract: Sposób lokalnego odmetanowania niskoprocentowego
w podziemnych wyrobiskach
górniczych poprzez zamknięty układ depresyjny,
znamienny tym, że do otworu (2)
odmetanowania przyłącza się szczelnie przerywacz
(3) płomienia składający się ze stalowej
rury zamkniętej na stałe sitowym dnem (5)
z otworami i skręconego z nim centralnie
umieszczoną śrubą (7) sitowego dna (6) z
otworami, a przestrzeń (8) pomiędzy nimi
wypełnia się materiałem porowatym najkorzystniej
sortowanym żwirem kwarcytowym,
do którego dołącza się zawór(10) z korkiem(11)
pomiarowym połączony szczelnie z zamkniętym
układem depresyjnym.
Patent PL-172366-B1 (PL)
Title: Method of dynamically switching radio station in a digital long-range radio communication system
Inventor: AAHL PETER
IPC: H04J3/00
Filed: 1993-02-03
Abstract: Method in a digital wide area system operating in time division and comprising two or several subsystems, each of which comprises at least one central station (CS) and one or several peripheral stations (PS) and covering an area/volume (space) where the area covered basically depends on the radio optical coverage of each central station and underlaying peripheral stations, the communication within and between subsystems that are geographically spread out is created at each central station. A central station is controlled to change mode of operation to operate either as a central station for transmitting and receiving information to and from underlaying peripheral stations, or receiving and transmitting information as a peripheral station (PS) from and to another central station.
Patent PL-175757-B1 (PL)
Title: Control device for and method of touch-free controlling appliances in particular sanitary ones
Inventor: MAUERHOFER ALEX
IPC: G01S17/04
Filed: 1995-02-01
Abstract: The electronic control device provides contact-free control of an installation, such as a urinal. It has at least one transmitter (6) to provide directed light signals. It also has a receiver (37) which receives signals (16,17,18) and feeds them to a switch (11) acting on the installation. The transmitter (6) and the receiver (37) form an optical triangulation arrangement. To fade out the background, reflections (21) from the background and from a given detection area are received.
Patent PL-176636-B1 (PL)
Title: Shock and vibration energy absorber
Inventor: CHMIELEWSKI ANDRZEJ
IPC: F16F1/40
Filed: 1995-04-25
Abstract: Shock and vibration energy absorber consisting of disk, ring or cylinder-shaped elements made out of plastomers or elastomers, divided by metal disks or rings, creating stack, characterised in that it contains elastic shaped element (1,11), with dissipating element (2,12) located uniaxial in the middle of the elastic element. The height of the dissipating element includes between 0.5 and 1.5 of the height (h) of the elastic element (1,11).
Patent PL-180447-B1 (PL)
Title: Cement grinding medium
IPC: C04B24/06
Filed: 1995-07-12
Abstract: Grinding agent for cements is made up of sugar syrups derivs. (I)  a ef. (I) are obtd. by oxidn. or hydrogenation of sugar syrups (pref. polysaccharides syrups). 0.01-1 (0.015-0.25) wt.% w.r.t. the cement of (I) is used. (I) may be used in combination with other known grinding agents. (I) is pref. a glucose-based syrup deriv.
Patent PL-181564-B1 (PL)
Title: Derivatives of antracycline and their application in treating amyloidoses
Inventor: SUARATO ANTONINO
IPC: C07C225/34
Filed: 1996-04-08
Abstract: The present invention provides the new use in the treatment of amyloidosis with the anthracyclinone of formula (A) wherein R1, R2, R3, R4, and R5, are appropriate substituents. Some compounds of formula (A) are novel. Processes for their preparation and pharmaceutical composition containing them are also described.