baber/WOPTO huggingface dataset:
Patent CZ-38493-A3 (CZ)
Title: Process of compacting moulding sand in casting moulds
Inventor: FISCHER KURT
IPC: B22C15/08
Filed: 1993-03-10
Abstract: The invention relates to a process for compacting foundry moulding sand using a pattern plate with a pattern arranged thereon, the foundry sand being introduced loosely into a mould cavity above the pattern plate, being fluidised by means of a surge of compressed air acting on the foundry sand up to a maximum final pressure of 20 bar and being recompacted by mechanical pressing. Use is made of a gentle pressure surge, the pressure rise characteristic of which as a function of time is divided into at least two partial gradients, the first part of the pressure-rise gradient taking place at 0.3 to 18 bar/s and a further, second part taking place with an increased pressure-rise gradient of 18 to 95 bar/s, and this pressure is then reduced, essentially in a controlled manner, with pressure-reduction gradients of a minimum of 3 bar/s, and the pressing operation is initiated during the pressure reduction. <IMAGE>
Patent CZ-40399-A3 (CZ)
Title: Dna encoding ligand related to tnf, process of its preparation and method of suppressing immune response
Inventor: CHICHEPORTICHE YVES
IPC: C12N15/11
Filed: 1997-08-07
Abstract: Tumor necrosis factor related ligand (TRELL), a novel member of the tumor necrosis factor family (TNF), modified TRELL, and pharmaceutical compositions comprising them.
Patent CZ-73495-A3 (CZ)
Title: Ester amides of sulfonamidocarbonylpyridine-2-carboxylic acids and their pyridine-n-oxides, process of their preparation and their use as a medicament
Inventor: WEIDMANN KLAUS DR
IPC: A61K31/4418
Filed: 1995-03-23
Abstract: Sulphonamidocarbonyl pyridine-2-carboxylic acid ester amide derivs. of formula (I) and their pyridine N-oxides are new. R1 = OH or 1-6C alkoxy; R2, R3 = H, opt. substd. 1-6C alkyl, 1-6C alkoxy, halogen (esp. F, Cl or Br), CN, OH or NH2; R6 = H, 1-6C alkyl or a N-protecting gp., a 1-4 valent cation or a cation of a basic amino acid; R7 = Y-(Y'U)rDW but not SO3H; Y = SO2 or CO; Y' = bond or 1-16C alkanediyl, 3-10C cyclic alkanediyl, 2-16C alkenediyl, 2-16C cycloalkenediyl, 2-16C alkynediyl, 2-16C alkenynediyl, opt. contg. more than 1 C-C multiple bond; U = bond, H (sic), CO, OCO, COO, CONR, NRCO, O, SO, SO2, NR; R = 1-3C alkyl or H; r = 1-4; D = bond, H (sic), 1-10C alkanediyl, 1-10C alkenediyl, 2-10C alkynediyl, 2-10C alkenynediyl, opt. contg. more than one C-C multiple bond; W = bond (sic), H, 3-10C cycloaliphatic alkyl, 3-10C alkenyl, 3-10C alkynyl or 3-10C alkenynyl, 6-16C aryl or 5-6 membered heteroaryl; R4 = H, 1-6C alkyl, Ph or phenyl(1-4C)alkyl; R5 = aliphatic 1-8C alkyl, (mono-substd. by 1-12C alkoxycarbonyl, 1-12C alkoxy(1-2C)alkoxycarbonyl, 3-8C cycloalkoxycarbonyl, 3-12C alkenyloxycarbonhyl, or 3-12C alkynyloxycarbonyl), and which is opt. substd. with one or more substitutents (sic); with provisos.
Patent CZ-93093-A3 (CZ)
Inventor: CHROMY JIRI ING
IPC: C02F11/00
Filed: 1993-05-18
Abstract: Způsob zpracování kalá z čistírem odpadních vod, při kterém se surový kal o teplotě 15 až 25° a o vlhkosti 50 af 80 % promísí s rostlinným substrátem, přičemž celková vrstva směsi je nejvýše 0,5 m a poměr objemu kalu k objemu rostlinného substrátu je od 1:4 do 1:1 v závislosti na stáří a vlhkosti kalá. Tento poměr roste s rostoucím stářím kalu a klesající vlhkostí, načež se do směsi na každých 4,5 m3 kalu 
dodá jedna kompletní násada bezobratlých z čeledi žížalovi- tých - Lumbricidae a takto připravená kalová směs se ponechá v klidu po dobu nejméně 3 měsíce. Je výhodné použít přísadu rostlinného substrátu obsahujícího mechanicky upravené části vegetativního původu získané přímou sklizní a/nebo z odpadu z průmyslové výroby. Pro řádný průběh ce« lého procesu lze s výhodou použít kalovou lagunu vytvořenou ze stavebního materiálu s nasákovostí do 2,0 % zejména z betonu a/nebo z cihel, jejíž boční stěny mají výšku nejméně 0,7 m, a jejíž dno je vyspádováno se sklonem nejméně 5 % k drenážnímu kanálku, přičemž celá laguna je nejméně do výše 0,7 m bočních stěn vyložená geotextilií. Zlepšení funkce se dosáhne tím, že laguna sestává ze vzájemně oddě lených  lených sekcí, z nichž každ á má plochu 9 nr a její dno a/nebo sieny jsou opateny vetracimi kanalky.
Patent CZ-96698-A3 (CZ)
Title: Metal wind instrument
Inventor: HARRER ROBERT
IPC: G10D9/04
Filed: 1997-07-15
Abstract: A brass-wind instrument has a valve mechanism whose slides can be switched on and off by pistons which can rotate in valve bodies. The brass-wind instrument is characterised in that each piston and its surrounding valve body are united in a prefabricated part that can be inserted and retained in a valve reception housing provided in the valve mechanism.
Patent SK-18493-A3 (SK)
Title: Glass composition
Inventor: COPLEY GEOFFREY J
IPC: C03C3/095
Filed: 1993-03-11
Abstract: An alkali-silicate glass composition with refractive index of 1.55 or greater, and Abbe number less than 46, suitable for the manufacture of crystal glass, comprises by weight SiO2 45-65%, M2O 12-23% and Bi2O3 and/or TiO2 0-30% by weight (where M=Na, K or Li).
Patent SK-20493-A3 (SK)
Title: Plant-based medicament for enhancing and controlling the tone of smooth-muscle organs
Inventor: OKPANYI SAMUEL N
IPC: A61P13/02
Filed: 1992-04-03
Abstract: Medicament contains Iberis amara, in particular in the form of an extract or the components of an extract as the only bearer of effect, without presence of the top of Chelidonii herba, seeds of the Cardui mariae fructus and the root of Angelicae radix.
Patent SK-34993-A3 (SK)
Title: Propenoyl-imidazole derivatives
Inventor: MULLER-GLIEMANN MATHIAS
IPC: C07D233/64
Filed: 1993-04-15
Abstract: Propenoylimidazole derivatives are prepared by reaction of corresponding imidazolylaldehydes with CH-acidic compounds and subsequent dehydration of the intermediates. The propenoylimidazole derivatives can be employed as active compounds in medicaments for the treatment of arterial hypertension and atherosclerosis.
Patent SK-38297-A3 (SK)
Title: A traffic control system, use of it, and a method of controlling the movement of a mobile unit
Inventor: PEDERSEN HEINE EWI
IPC: B61L3/12
Filed: 1995-09-25
Abstract: A traffic control system for mobile units comprises a plurality of stationary, passive units having electronic store capacity and transmit and receive facilities. The store of the passive units contains an information code which is unique to the unit and is related to the position of the unit concerned. A mobile unit has a computer with associated store capacity and transmit and receive facilities. When interrogated by a mobile unit, the stationary units supply their information code, enabling the mobile unit to calculate its position. The store of the stationary units, in addition to the information codes of said units, contains stored traffic messages which are supplied together with the information code upon interrogation from the mobile unit. The movement from the mobile unit can be adjusted according to the traffic information received.
Patent SK-42295-A3 (SK)
Title: Purificated and isolated dna molecule, analogue of beta-subunit of tryptophansynthetasy, tryptophansynthetasy, prokaryotic or eukaryotic host cell, method of biosynthesis of indole and indigo
Inventor: MURDOCK DOUGLAS C
IPC: C12N15/09
Filed: 1993-09-30
Abstract: DNA molecules encoding a modified tryptophan synthase beta subunit are disclosed. When expressed in a recombinant host microorganism, these polypeptide analogs enable significant levels of intracellular indole production and accumulation. In the presence of an aromatic dioxygenase enzyme, the indole so produced can be converted to indoxyl, which upon exposure to air oxidizes to indigo.
Patent SK-47294-A3 (SK)
Title: Carrier frame of rotary cutter bar with big working width
Inventor: REISSIG PETER
IPC: A01B59/06
Filed: 1994-04-25
Abstract: The mower attachment has a lifting frame (3) attached to the tractor and a main frame (6) from which a front frame (7) has vertical pivots in the centre and at the two sides. The pivots carry tilt levers which swing in a horizontal plane and which support left- and right booms (11) from which the cutting discs are supported. In the extended position the tilt levers move the booms outwards for a maximum swathe while in the transport setting the booms are pulled inwards to locate behind each other. The PTO drive is split to the two booms. The two settings of the booms are controlled by double acting hydraulic cylinders and the two settings are locked by safety bolts.
Patent SK-63894-A3 (SK)
Title: Method of preparation of beta-lactam antibiotic
Inventor: CLAUSEN KIM
IPC: C12P37/04
Filed: 1992-12-18
Abstract: The present invention relates to an improved method for the preparation of certain  beta -lactam antibiotics by enzymatic acylation or by deprotection of a protected intermediate.
Patent SK-77693-A3 (SK)
Title: 1,4-benzodioxan derivatives, process for their preparation and their pharmaceutical compositions
Inventor: BOTTCHER HENNING
IPC: A61K31/443
Filed: 1993-07-23
Abstract: 1,4-Benzodioxane derivatives of the formula I <IMAGE>  in which     R<1> denotes H or A, Ar denotes an unsubstituted phenyl radical or one mono- or disubstituted by A, F, Cl, Br, I, CN, OH and/or OA or by a methylenedioxy group,   A denotes alkyl having 1-6 C atoms and   m and n in each case independently of one another denote 1 or 2 and their salts exhibit effects on the central nervous system.
Patent SK-86799-A3 (SK)
Title: 3-aminocarbonyl-/3-aminothiocarbonyl-substituted 2-benzoylcyclohexan-1,3-diones
Inventor: KARDORFF UWE
IPC: A01N33/24
Filed: 1997-12-19
Abstract: The invention concerns 2-benzoyl-cyclohexan-1,3-diones of formula (I), in which R1, R2 stand for hydrogen, nitro, halogen, cyano, rhodano, alkyl, halogen alkyl, alkoxyalkyl, alkenyl, alkinyl, -OR5, -OCOR6, -OSO2R6, -SH, -S(O)nR7, -SO2OR5, -SO2NR5R8, -NR8SO2R6 or -NR8COR6; R3 stands for hydrogen, alkyl, halogen alkyl or alkinyl; R4 stands for hydrogen, optionally substituted alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkinyl, -COR9, -CO2R9, -COSR9 or -CONR8R9; X stands for oxygen or sulphur; m equals 0 or 1; n equals 0, 1 or 2; R5 stands for hydrogen, alkyl, halogen alkyl, alkoxyalkyl, alkenyl or alkinyl; R6 stands for alkyl or halogen alkyl; R7 stands for alkyl, halogen alkyl, alkoxyalkyl, alkenyl or alkinyl; R8 stands for hydrogen or alkyl; R9 stands for alkyl, alkenyl, alkinyl, phenyl or benzyl; R10 stands for alkyl, halogen alkyl, alkenyl or alkinyl; Q stands for optionally substituted cyclohexan-1,3-dione ring linked in position 2, whereas m equals 1 when R3 stands for hydrogen. Also disclosed are the salts of these compounds useful in agriculture; processes and intermediate products for preparing the compounds of formula (I), agents containing the same and the use of these derivatives or agents containing the same for controlling undesirable plants.
Patent CZ-224691-A3 (CZ)
Inventor: BUBENICEK JAN ING
IPC: B24B3/26
Filed: 1991-07-19
Abstract: Zařízení sestává z rámu (1), v němž je uložen brusný kotouč
(2) s pohonem a je k němu připojeno hlavní rameno (6)
otočně spojené s koncovým ramenem (7). Na koncovém rameni
(7) je uspořádán držák (3) nástroje (4), který je uložen
vůči rámu (1) otočně na první ose (13) a na druhé ose (16) a
ke koncovému rameni (7) je uspořádán axiálně suvně a
otočně kolem vlastní osy prostřednictvím přetáčecího mechanismu
(22).
Patent CZ-336592-A3 (CZ)
Title: Vessel for matters capable of flowing
Inventor: HEROLD WOLF-DIETRICH
IPC: B65D83/76
Filed: 1992-11-11
Abstract: A container comprises a tubular film 11 for flowable products. The opened tubular film can be placed in a cylindrical housing 31 between a cap 33 and a displaceable plunger 32. At the end of the tubular film 11 facing the cap 33, said tubular film is provided with a ring 20 which has a conical sealing surface 21. When the contents of the tubular film 11 are discharged by advancing the plunger 32, said sealing surface 21 is pressed against a counter-surface 35 of the cap 33 which surrounds the discharge aperture 34. The contents of the tubular film 11 are thus prevented from leaking onto the inside wall of the housing. <IMAGE>
Patent CS-557490-A3 (CS)
Title: Connecting member for coupling two ends of optical fibers contacting each other in butt manner
Inventor: PATTERSON RICHARD A
IPC: G02B6/38
Filed: 1990-11-12
Abstract: Elements for making butt splices, in optical fibers, formed of a permanently deformable material, e.g. metal or polymeric material, can be formed to define three surfaces 78, 79, and 86 for contacting the fibers to be spliced. The surfaces are formed between two legs 74 and 75 of an element such that when the legs are closed onto the fibers, the surfaces center the fibers by embedding the fibers into the surfaces and afford a resilient spring compression reserve force on the aligned fibers to maintain them in contact and clamp the fibers in the element.
Patent CZ-150895-A3 (CZ)
Inventor: BUKOVANSKY STANISLAV ING
IPC: E21B44/00
Filed: 1995-06-09
Abstract: Zařízení má světelný zdroj (1) a protilehlý
indikátor (7) světla, mezi něž Je vložen optický
vláknový senzor (8), jehož vlákno je mnohovidové
a jednovidové. Optický vláknový senzor
(8) je vytvořen dvěma proti sobě umístěnými
mikroohyby (4), které jsou neseny dvěma
deskami (5, 6) po obvodě od sebe oddělenými
čtyřmi odtlačnými pružinami (2).
Patent CZ-172294-A3 (CZ)
Title: Mixture for preparing composite materials, process for preparing ceramic composite articles, electric heating element and the ceramic composite article
Inventor: SEKHAR JAINAGESH A
IPC: H05B3/12
Filed: 1992-12-07
Abstract: Electrical heating elements and related articles having oxidation resistance at high temperatures, produced by a method involving micropyretic synthesis. A composition subjected to micropyretic synthesis comprises a filler material, a reactive system capable of undergoing micropyretic synthesis, and (optionally) a plasticizer or extrusion agent. The method of preparation of articles includes slurry techniques, plastic extrusion, slip casting, or coating.
Patent CZ-9901772-A3 (CZ)
Inventor: BARTOS OLDRICH ING
IPC: F24V99/00
Filed: 1999-05-19
Abstract: Sebepohon tepelných čerpadel, jednotlivých nebo ve
skupinách, spočívá v tom, že část tepelné energie získané při
jejich provozu se využije k jejich vlastnímu pohonu s cílem
využít zbytek ve formě tepla nebo elektrické energie pro
potřeby obyvatel a průmyslu.
Patent CZ-180795-A3 (CZ)
Title: Esters of alpha-(4-chlorophenyl)-4/(4-fluorophenyl)methyl/-piperidin-1-ethanol, process of their preparation, medicaments formed by those esters and pharmaceutical composition containing said esters
Inventor: THENOT JEAN PAUL
IPC: A61P25/28
Filed: 1995-07-12
Abstract: 1-(4-Chlorophenyl)-2-(4-(4-fluorobenzyl)piperidino)-ethanol esters of formula (I) and their acid-addn. salts are new. R = 1-19C alkyl, 2-19C alkenyl, 3-6C cycloalkyl, 4-7C cycloalkylmethyl, phenyl, monohalophenyl, benzyl or monohalobenzyl.
Patent CZ-189299-A3 (CZ)
Title: Preparation for treating or prevention of pancreatitis
Inventor: ASAI FUMITOSHI
IPC: C07D213/30
Filed: 1997-11-27
Abstract: A diarylalkane derivative represented by the following formula: <CHEM> Äwherein, R<1>: a hydrogen atom, a halogen atom; R<2>, R<3>: a hydrogen atom, a halogen atom, a C1-C4 alkoxy group; R<4>: a substituted or unsubstituted 5- or 6-membered cyclic amino group which may further contain an oxygen or sulfur atom; A: a C1-C4 alkylene groupÜ, or a pharmacologically acceptable salt thereof has excellent pancreatitis inhibitory activity and is therefore useful as a composition for the treatment or prevention of pancreatitis.
Patent CZ-190097-A3 (CZ)
Title: Derivatives of piperazine-2,5-dione as multidrug resistance modulators
Inventor: ASHWORTH PHILIP ANTHONY
IPC: C07D409/14
Filed: 1995-12-22
Abstract: A piperazinedione derivative of formula (I), wherein R<1> is: (i) a group  alpha , wherein p is 0 or 2; (ii) a 5- or 6-membered heterocyclic ring containing at least one heteroatom selected from O, N and S, which group may be fused to a benzene ring; R<2> is H, C1-C6 alkyl optionally substituted by a group -N(R<11>R<12>) as defined above, C3-C6 cycloalkyl, C2-C6 alkenyl, -COOR<11> wherein R<11> is as defined above or a phenyl ring as defined under (i) above, but is other than H when R<1> is unsubstituted phenyl; and one of R<3> and R<4> is hydrogen and the other is a group of formula (A), wherein q is an integer of 1 to 4, r is 0 or 1 and R<5> and R<6>, which may be the same or different, are each H or C1-C6 alkoxy, or R<5> and R<6> together form a methylenedioxy group; <u>-----</u> is a double bond or, when R<1> is as defined under (i) above, is a double bond or a single bond; and pharmaceutically acceptable salts thereof have activity as modulators of multi-drug resistance.
Patent CZ-198496-A3 (CZ)
Title: Folding contained for liquid products
Inventor: VAN GIEZEN MAURICE GERARDUS MA
IPC: B65D19/12
Filed: 1995-01-05
Abstract: A container device for bulk goods or liquid comprises a folding frame (1) and a container (2) accomodated in the frame, which frame comprises a base section (3) as well as at least two folding side sections (4, 5) provided on opposite sides of the base section, which side sections are movable between a horizontal position and an upright position. The frame has a top section (13) which is supported some distance above the base section and foldably interacts with one of the sides.
Patent CZ-200121-A3 (CZ)
Title: Extracts from Zanthoxylum bungeanum and pharmaceutical and cosmetic preparations in which they are comprised
Inventor: BOMBARDELLI EZIO
IPC: A61Q19/00
Filed: 1999-04-07
Abstract: The extract of the pericarp of Zanthoxylum bungeanum, prepared by extraction with carbon dioxide in supercritical conditions, has remarkable analgesic activity without exerting the local anesthetic activity characteristic of the extracts obtained by solvent means. The product of the present invention is prepared by extracting the pericarp of Zanthoxylurn bungeanum, finely ground or transformed into pellets, with carbon dioxide under pressure conditions ranging from 150 to 300 bars at temperatures ranging from 35 to 55° C.
Patent CZ-200228-A3 (CZ)
Title: Device for thread feeding with weight-relieved stop
Inventor: KAUFMANN RICHARD
IPC: D04B15/48
Filed: 2000-07-06
Abstract: The invention relates to a yarn feed device in which one or more yarn detector levers (16) are provided which, while resting on the yarn, exert a force thereon that is small when the lever (16) is in a specified position, i.e. during proper yarn travel. If the lever pivots outward due to a slackening of the yarn tension or a tear in the yarn, the force with which the lever exerts onto the yarn increases. This is, for example, effected by a load-relieving device (31) which partially offsets the lever weight and exerts a compensation force which is dependent on the pivoting angle. The compensation force preferably decreases as the lever continues to pivot outward.
Patent CZ-202085-A3 (CZ)
Inventor: FIALA JIŘÍ
IPC: C04B28/04
Filed: 2020-02-20
Abstract: Směsný cement, obsahující portlandský slínek a alespoň jednu příměs s pucolánovými a/nebo hydraulickými vlastnostmi, spočívá v tom, že jako příměs s pucolánovými a/nebo hydraulickými vlastnostmi obsahuje inertní stavebně demoliční odpad a/nebo průmyslový odpad z výroby stavebních výrobků ve formě prášku s velikost částic 5 až 250 σωµm.
Patent CZ-207494-A3 (CZ)
Title: Switch with a switching tube
Inventor: DUFFOUR HENRI
IPC: H01H33/66
Filed: 1994-08-26
Abstract: The switch has a vacuum switching tube (1) and a switch housing (3) which holds the vacuum switching tube (1) between two electrical connections (5, 6). The vacuum switching tube (1) contains an evacuated housing (7) which is constructed in the form of a tube and has a stationary switching element and a moving switching element. A contact support (8) (which can be moved by a drive) of the moving switching element is guided out of the housing (7), held in a vacuum-tight manner by means of a bellows (19) and held on the tube axis (2) by means of a sliding guide. The sliding guide has a bush (12) which is detachably mounted on a flange (16) of the housing (7). The bush (12) has an axially aligned guide groove (22) located on its inner surface. A guide element (14), which is held on the sliding body of the moving contact support (8), is guided in this guide groove (22). The switch is distinguished by the fact that undesirable forces acting axially, radially or in a twisting manner are kept remote from the bellows during assembly (installation) and during operation. In consequence, vacuum sealing of the vacuum switching tube (1) and thus good operational realiability (safety) of the switch are ensured even over long operating time periods and during assembly (installation) and maintenance (servicing) tasks. <IMAGE>
Patent CZ-262394-A3 (CZ)
Title: Coin-releasable lock
Inventor: LENANDER AAGE
IPC: G07F7/06
Filed: 1993-04-28
Abstract: A coin-deposite lock to be placed on a trolley being part of a row of mutually connected e.g. shopping trolleys or baggage trolleys comprises a main slide (14) being longitudinally slidable against the force from a spring (16) and a measuring slide (20) likewise longitudinally slidable against the force from a second spring (22). Each of the slides (14, 20) has a transverse central aperture (26, 24), and when a coin (C) of a certain value (diameter) has been inserted between the slides, the apertures (24, 26) are mutually aligned. Upon insertion of a key (8) belonging to the lock in a first key opening (6) in the lock, the slides (14, 20) can be moved to a position (Figure 2), in which a latching finger (36) on a pivotable release member (34) engages in the mutually aligned apertures (24, 26) and retains the slides (14, 20) and the coin (C) between them in a withdrawn position. At the same time, the release member (34) pivots to a position, in which a second latching finger (38) on it frees a second key (12) associated with a previous trolley in the row thus freeing the trolley from the row.
Patent CZ-263997-A3 (CZ)
Title: Locking device for vehicle tarpaulin
Inventor: FLIEGL HELMUT
IPC: B60P7/04
Filed: 1997-08-19
Abstract: The tension hooks of the locking device are located on a common shaft (6). This is mounted in the frame of the vehicle and connected to an individual tensioning device which is formed as a double rocker. The first rocker arm (15) of the double rocker is attached on the shaft, and the second rocker, equipped with an actuating lever (18) is mounted in a bearing assembly (17) below the frame. Both rocker arms are interconnected by a coupling (20) which is longitudinally adjustable to enable adjustment of the tensioning device.
Patent CZ-289898-A3 (CZ)
Title: Method of folding absorption article to a packet, absorption article and packaging unit
Inventor: MATTIASSON MARINA
IPC: A61F15/00
Filed: 1997-03-04
Abstract: The present invention relates to a method of package-folding an absorbent article, such as a diaper or an incontinence guard, comprising a rear part (5), a front part (4), an intermediate crotch part (6), and an absorbent body (1) enclosed between casing sheets (2, 3). According to the invention, laterally projecting parts of the article are folded inwards so as to give the article a rectangular shape, whereafter at least longitudinally outer portions of the rear front parts (5, 4) of the article are folded in towards the crotch part (6). The invention also relates to a package-folded absorbent article, and to packaging of a bundle of package-folded articles.
Patent CZ-297696-A3 (CZ)
Title: Almuninothermic production process of molten steel
Inventor: EGGERT HORST
IPC: B23K23/00
Filed: 1996-10-11
Abstract: A process for aluminothermic production of molten steel for welding workpieces comprises carrying out the aluminothermic reaction in a crucible of porous or hollow spherical alpha Al2O3 with a density of 0.8-3.0 (preferably 1.0-2.0) g/cm<3> and a bulk density of 0.3-1.8 (preferably 0.4-1.4) g/cm<3>.