baber/WOPTO huggingface dataset:
Patent YU-48370-B (YU)
Inventor: MILUN MITIC
Filed: 1990-05-14
Abstract: OBRTNA RAČUNALJKA ZA DEMONSTRATIVNO REŠAVANJE JEDNAČINA SA JEDNOM I VIŠE NEPOZNATIH VELIČINA naznačena time, što je u telu (1) izveden sprovodni kanal (2) koji se produžava u sprovodni kanal (2c), u iskošeni položaj na koji se vertikalno produžavaju udubljenja (4a-4e) u kojima su smešteni prebacivači (5a-5e) sa udubljenjima (5f-5n) kojim se nadovezuju na sprovodni kanal (2c) a donjim delom i iskošenom stranom (5e) se periodično produžavaju na sprovodne kanale (11a-11e) a na sprovodni kanal (2g) se produžavaju vertikalno izvedena udubljenja (14) u kojima su smešteni prebacivači (15a-15m) tako da se njihova udubljenja (17) produžavaju na sprovodni kanal (2g) pri čemu su sprovodni kanali (11a-11e) i (16) povezani sprovodnim kanalom (12) koji se produžava u sprovodni kanal (2h), u iskošenom položaju kanalom (13), pri čemu se sprovodni kanal (2h) produžava u udubljenja (27a-27c) u kojima su postavljeni prebacivači (28a-28e) i udubljenja (22a-22e) u kojima su postavljeni prebacivači (23a-23e) čija se udubljenja gornjim krajem produžavaju na sprovodni kanal (2h) a donjim krajem na sprovodne kanale (30, 24) koji se produžavaju u sabirni sprovodni kanal (26) preko sprovodnih kanala (31,25) a sprovodni kanal (2h) se produžava u sprovodni kanal (26a), sabirnu cev za prvu jednačinu (35) i sabirnu cev za drugu jednačinu (36) i što se na donje krajeve sabirnih cevi za prvu i drugu jednačinu (35, 36) produžavaju udubljenja (39, 40) u kojima su postavljeni razvodnici (41,42) pri čemu se udubljenja (39,40) donjim delom produžavaju u sabirne cevi (45,46) a gornjim delom u iskošene sprovodne kanale (50, 51) i što je sprovodni kanal (2h) povezan sa sprovodnim kanalom (2) preko sprovodnog kanala (9a) za vraćanje kuglica, a naspram udubljenja (4a-4e) i (5a-5m) izvedeno je udubljenje (18), male dubine i u njemu je smeštena pokretna neprovidna ploča (19), a naspram prebacivača (28a-28e) i prebacivača (23a-23c) izvedeno je udubljenje (32) u kome je postavljena pokrivna ploča (33) sa ručicom (33a) postavljene u otvoru (34) providnog poklopca (21). Prijava sadrži još 1 zavisan zahtev.
Patent YU-45722-B (YU)
Title: Postupak za dobijanje n-acil-4-ili n-acil-2-hidroksi fenil amina
Inventor: DAVENPORT K G
IPC: C07B61/00
Filed: 1985-06-04
Abstract: POSTUPAK ZA DOBIJANJE N-ACIL-4-ILI N-ACIL-2-HIDROKSI FENIL AMINA, opšte formule I: gde R1 je hidroksi grupa a R2 je vodonik ili C1-3 alkil grupa ili R1 je vodonik ili C1-3 alkil grupa a R2 je hidroksi grupa; i R3 je niža alkil grupa, naznačen time, što hidroksi aromatični keton formule II: gde R1, R2 i R3 imaju napred data značenja, reaguje sa neorganskim hidroksilaminom ili njegovom solju i bazom radi gradjenja odgovarajućeg ketoksima koji se podvrgava katalizatoru za Beckmannovo premeštanje u rastvaraču radi dobivanja pomenutog N-acil-4- ili N-acil-2-hidroksi fenil amina. Prijava sadrži još 9 patentnih zahteva.
Patent ZA-95837-B (ZA)
Title: Concentrated aqueous solutions of argatroban
Inventor: ANDRE FREDERIC
IPC: A61K9/08
Filed: 1995-02-02
Abstract: Concentrated aq. solns. contg. argatroban (II), one or more micelle-forming agents, esp. a cholic acid deriv. of formula (I), and one or more lipoids (III) esp. a phosphatide, are new. R1, R2, R3 = H, OH, or exocyclic keto; R4 = carboxy, opt. attached through an amide linkage to the amine of an amino acid. The steroid skeleton may further contain one or two double bonds.
Patent AT-398366-B (AT)
Title: Convertible upholstered furniture
IPC: A47C17/18
Filed: 1990-07-06
Granted: 1994-11-25
Abstract: Convertible upholstered furniture, which can be used alternatively as a seat or as a couch, having a seat part 1 supported by a frame 2 and a backrest, as well as armrests which are formed in one piece with the backrest and are each connected via parallelogram links 4 to two shafts 5 which are rotatably mounted in the frame 2 of the seat part 1; the combined backrest/armrest part 3 can be lowered, parallel to itself, from a position in which it is above the seat part 1 into a position in which it surrounds the seat part 1 and, with the seat area, forms an enlarged lying surface; one of the parallelogram links 4 of each armrest bears at its lower end a lever arm 6, which is connected to the frame 2 via an actuating device 7 which endeavours to pivot the link 4 into the raised position of the backrest/armrest part 3. <IMAGE>
Patent AT-402286-B (AT)
Title: Catalysis for converting SO2 into SO3
Inventor: HUBER WILFRIED ING
IPC: C01B17/765
Filed: 1993-12-13
Granted: 1997-03-25
Abstract: In order to be able to achieve a final conversion of at least 99% in a catalysis for converting SO2 into SO3 by means of a process which is simple to carry out and incurs only small capital costs, the invention provides for the following procedure to be employed: the reaction is carried out as a single catalysis, the SO2-containing process gas is passed through a plurality of catalyst beds 1 to 5 connected in series, the reaction is activated in at least the first two catalyst beds 1, 2 by a conventional potassium-doped vanadium catalyst 7, the reaction is activated in at least the last catalyst bed 4, 5 by a low-temperature catalyst 8, the temperature of the SO2-containing process gas introduced into the low-temperature catalyst bed 4, 5 is set by feeding in dried oxygen-containing gas, preferably air, the oxygen content of the SO2-containing process gas introduced into the low-temperature catalyst bed 4, 5 is set to a process-optimized oxygen partial pressure by feeding in dried oxygen-containing gas, preferably air, and the residence time of the SO2-containing process gas flowing through the low-temperature catalyst bed 4, 5 is set to at least 1.8 seconds by providing a particular catalyst bed height. <IMAGE>
Patent CH-621915-B (CH)
Inventor: DESARZENS PIERRE
IPC: G07C1/24
Filed: 1977-04-22
Abstract: The invention concerns sports timing systems and in particular connections between a central processor which determines the performances of the competitors and the peripheral devices which provide such processor with the necessary information such as starting and arrival times, intermediate times and as well as any other information necessary for the identification of the device concerned or of the competitor.
Patent DK-145987-B (DK)
Inventor: VANGSTED A
IPC: B65B53/02
Filed: 1978-12-13
Abstract: In an apparatus for shrinking of a shrink film hood around goods stacked on a pallet, heat radiation elements and reflectors. serving to heat the film hood, are mounted in a gallow-shaped rod with a U-shaped cross section. The said rod is suspended from an endless chain and can be moved around the stacked goods in a quadrangle movement, being guided in such manner that it turns 90° when a corner is passed in the quadrangular movement. A single round of the gallow-shaped rod gives the necessary heating of the shrink film hood.
Patent FI-73736-B (FI)
Inventor: TALKES BRIAN EDWARD
IPC: C11D17/04
Filed: 1983-06-08
Granted: 1987-07-31
Abstract: Laundry additive products comprising a solid laundry additive composition and a flexible, sheet-like apertured substrate carrying a water-releasable coating of the laundry additive composition. The substrate has an aperture density of from about 10 to 30 apertures per sq cm and the apertures have a width of from about 0.5 to 5mm and a length of from about 0.8 to 5mm. The product comprises areas of uncoated aperture and areas within the coating covers the apertures and extends between opposing surfaces of the substrate. The ratio of areas of uncoated to coated apertures is from about 15:1 to 1:3. The weight ratio of composition:substrate is at least 5:1. The additive products combine a high loading of composition together with excellent flexibility, product release, feel and storage characteristics.
Patent FI-82108-B (FI)
Inventor: KIRBIS REINHARD
IPC: D21G1/00
Filed: 1985-07-15
Granted: 1990-09-28
Abstract: 1. A method of refining paper in which a paper web is passed through at least one roll gap of a calender, in which a pressure is exerted on the paper web, the moisture content thereof being reduced to a final value, characterised in that the paper web is passed out of the roll gap or the last of the roll gaps with a moisture content which is above the final value of moisture content after which, to reduce the moisture content to the final value, it is subjected to a drying process by passing through a drying apparatus.
Patent FI-98191-B (FI)
Inventor: WHELAN RICHARD HOWARD
IPC: A23G9/52
Filed: 1991-02-01
Granted: 1997-01-31
Abstract: Low calorie frozen desserts, in particular ice cream-like products, having a smooth, creamy, nongritty mouthfeel are can be produced. These frozen desserts contain fat that contains from about 30 to 100% of certain edible, wholly or partially nondigestible intermediate melting polyol polyesters, milk solids other than fat, sweetener, oil-in-water emulsifier, a flavoring substance, and water. The fat is substantially homogeneously dispersed in the aqueous phase as emulsified fat particles having an average particle size of about 5 microns or less. These frozen desserts are obtained by a process which initially involves the formation of a preemulsion by homogenizing a mixture which consists essentially of these intermediate melting polyol polyesters and only a portion of the other dessert ingredients. This preemulsion is then combined with the remaining dessert ingredients, homogenized, pasteurized, and at least partially frozen to provide the frozen desserts.
Patent FI-90210-B (FI)
Inventor: KOIVISTO MARKKU HERMANNI
IPC: B22D11/045
Filed: 1991-11-14
Granted: 1993-09-30
Abstract: The invention relates to an apparatus for intensifying cooling in the casting of metal objects, particularly in essentially vertical continuous upward casting. In order to intensify the cooling, the part (5) of the cooler (3) that is located nearest to the casting vessel is provided with a squeeze ring (6). <IMAGE>
Patent FI-100990-B (FI)
Inventor: GOLDENBAUM PAUL E
IPC: C12N1/20
Filed: 1991-12-04
Granted: 1998-03-31
Abstract: The present invention is a fastidious organism supplement which comprises growth factors and components to neutralize the toxicity of a polyanionic anticoagulant. The supplement is useful to isolate, grow, recover and/or enhance detection of fastidious organisms in culture media.
Patent FI-96403-B (FI)
Inventor: SEILER RONALD R
IPC: B60C11/02
Filed: 1991-12-23
Granted: 1996-03-15
Abstract: The invention relates to a pre-vulcanized replacement tread strip which is contoured to provide improved consistency in application, appearance and road endurance. The tread comprising a sole having a nominal arc in a cross-sectional plain of a pre-determined radius, respective tread shoulders, an upper tread portion disposed between said shoulders and overlying said sole, said upper tread portion having associated therewith a nominal arc extending between said tread shoulders and respective skirts, each skirt including a planar interior wall, an interior interconnection portion, an exterior side wall and an end portion, connecting said interior and exterior walls. There are given certains relations between radii and arc length which are decisive for a favourable retreading of a worn tire. <IMAGE>
Patent FI-94546-B (FI)
Inventor: HOLBEK JOHN
IPC: E04D5/02
Filed: 1992-01-09
Granted: 1995-06-15
Abstract: PCT No. PCT/DK90/00179 Sec. 371 Date Jan. 7, 1992 Sec. 102(e) Date Jan. 7, 1992 PCT Filed Jul. 10, 1990 PCT Pub. No. WO91/00945 PCT Pub. Date Jan. 24, 1991.A bituminous sheet or web coating material (1) is on the one side provided with a heat activatable adhesive layer (3) optionally covered by a plastic film (5), wherein the adhesive layer is provided with a pattern of close grooves (4) with intermediate unbroken ridges, and a process for forming a coating on a support is performed by heating such coating material (1) to decomposition of said plastic film (5) and activation of the adhesive layer (3), the activated adhesive layer (3) being pressed against the support, e.g. a roof.
Patent FI-110949-B (FI)
Inventor: CORR STUART
IPC: C10M105/38
Filed: 1992-10-05
Granted: 2003-04-30
Abstract: A working fluid composition comprising:   (A) a heat transfer fluid comprising a mixture of at least two compounds selected from the group consisting of hydrofluoroalkanes and fluoroalkanes; and (B) sufficient to provide lubrication of a lubricant which is at least partially soluble in each component of the heat transfer fluid.
Patent FI-109375-B (FI)
Inventor: SCHMIDT THOMAS
IPC: B60T17/22
Filed: 1995-05-24
Granted: 2002-07-15
Abstract: PCT No. PCT/EP93/03264 Sec. 371 Date Oct. 12, 1994 Sec. 102(e) Date Oct. 12, 1994 PCT Filed Nov. 22, 1993 PCT Pub. No. WO94/12849 PCT Pub. Date Jun. 9, 1994.A process and apparatus for measuring the wear of a multiple disk brake while a wheel hub is rotationless. A measuring instrument is provided having a screw-like component and a spindle. A plug element located in a predetermined bore of the wheel hub is replaced with the screw-like component. The brakes are actuated, the spindle is moved while the brakes are actuated until the spindle comes into contact with a supporting disk that axially supports the multiple disks. The distance the spindle was moved is ascertained to form a first measured value. The brakes are then released, and the spindle is moved again, until the spindle again comes into contact with the supporting disk. The distance the spindle was moved is ascertained to form a second measured value. The difference between the first measured value and the second measured value is determined to ascertain a piston stroke, and the wear of the multiple disk brakes is ascertained from the piston stroke.
Patent HU-192212-B (HU)
Title: Process for production of derivatives of 2,4-dinitro-6-/trifluor-methil/-1,3-phenilen diamin
Inventor: BARABAS MIHALY
Filed: 1985-04-26
Abstract: 2,4-Dinitro-6-(trifluoro-methyl)- 1,3-phenylene-diamine derivs. of formula (I) are prepd. by reacting halo-benzene derivs. of formula (II) with gaseous ammonia in the presence of acid binders, pref. at 40-80 deg.C in bipolar aprotic solvents. - In the formulae, R1 and R2 stand independently or separately for hydrogen, alkyl with 1-8 carbons or alkenyl with 2-8 carbons, X is chlorine or bromine. (Corrected entry) (-pp)
Patent HU-203408-B (HU)
Inventor: LOERINCZ ANDRAS
IPC: G01N21/00
Filed: 1989-05-04
Abstract: A találmány tárgya eljárás anyagi minőség lokális vizsgálatára fotoakusztikus módon, amelynek során szélessávú, fehér fénynyalábból monokromatikus fénynyalábot állítunk elő, amelyet hangrekvencia tartományában megszaggatunk. Az ily módon megszaggatott monokromatikus fénynyalábot zárt térben mintára vezetjük, mérjük a keletkező hangnyomás-jelet amelyből a minta anyagi minőségére következtetünk. Az eljárás lényege az, hogy a zárt teret üvegszálkötegen keresztül vezetett fénynyaláb útjában, annak végén oly módon hozzuk létre, hogy a fénynyaláb a mintával közvetlenül érintkezzék és a zárt térben keletkező hangnyomásjelet pedig mikrofonnal detektáljuk. A találmány tárgya továbbá berendezés is, amelynek fényforrása (L) a fényforrás (L) fénynyalábjának útjában fényszaggatója (S), továbbá vezérelhető, folyamatos hangolású monokromátora (M) van. Mikrofonnal összekötött elektronikus egységgel (E) rendelkezik. A berendezés úgy van kialakítva, hogy a fényszaggató (S) és a monokromátor (M) között a fényforrás (L) fénynyalábját téglalap keresztmetszetű, vonalszerű párhuzamos fénynyalábbá alakító első optikai rendszer (01) van elhelyezve. A monokromátort (M) követő második, a vonalszerű fénynyalábot négyzet keresztmetszetűvé alakító optikai rendszerrel (02) rendelkezik, amelyhez üvegszálkötegen (Ü) keresztül mérőfej (F) csatlakozik. A mérőfejben (F) mérőkamra van kiképezve, amelyhez kapillárison keresztül a mikrofon csatlakozik. (1. ábra)  HU 203 408 B A leírás terjedelme: 4 oldal, 2 rajz -1-
Patent HU-192961-B (HU)
Title: Process for preparing crystalline sodium-cefoperazone
Inventor: NAKANISHI SUSUMU
IPC: C07D501/12
Filed: 1983-07-15
Abstract: Crystalline sodium cefoperazone and a process for its manufacture in a form essentially free of residual organic solvents which comprises the steps of combining an aqueous acetone solution containing from about 3 to 30 percent (w/v) of sodium cefoperazone with about a four-fold volume (v/v) of a solution of acetone-methylene chloride (95:5, v/v) at a temperature of about 5-40°C.; and separating and drying the resulting crystalline sodium cefoperazone.
Patent HU-210613-B (HU)
Title: Method for the isolation of pure daunomycin
Inventor: MAGONE KARACSONY ERZSEBET
IPC: C07H15/252
Filed: 1991-12-12
Abstract: In order to obtain daunomycin or its opt. acid adduct salts, in state of high purity, it is sepd. from antibiotics of anthracyclin structure, formed in the fermentation brew, during biosynthesis and reductive metabolism of daunomycin, by an appropriate gp. of streptomyces coeruleorubidus actinomyces. Cells of microorganisms formed are sepd. from the fermentation brew, and daunomycin complexes attached to the microorganisms are dissolved away, with the aid of water sol. organic solvents, at an acid pH. Solns. obtd. are concentrated. - The concentrate is prepurified by extraction with a chlorinated aliphatic solvent at an acid pH. Daunomycin base is extracted from the aq. remainder at pH 7.5-7.8 with a chlorinated aliphatic solvent. The extract is pref. isolated and raw daunomycin is dissolved in a dil. soln. of an organic acid, or a dil. organic acid soln. is used to dissolve daunomycin from the extract, to form an aq. soln. Daunomycin base is liberated from aq. solns. obtd. by either means and is opt. sepd. and purified. Finally, an opt. daunomycin salt is formed by addn. of formic acid and/or anhydrous hydrochloric acid to the base. Salts are opt. recrystallised. (Dwg. 0/0)
Patent HU-190941-B (HU)
Inventor: ASVANYI JOZSEF
IPC: B66B1/02
Filed: 1983-12-19
Abstract: A találmány tárgya minimalizált ki- és bemeneti csatornákkal és áramköri készlettel megvalósított mikroprocesszorral vezérelt kapcsolási elrendezés felvonók részére. A kitűzött feladatot az ábrán bemutatott kapcsolási elrendezéssel valósítjuk meg, melyben mikroprocesszoros vezérlő és felügyelő egységhez (1) program és adattároló egység (2) hibajelző egység (14), kimeneti illesztő egységeken keresztül utastájékoztató jelzőrendszer (33) és felvonót működtető és jeladó szervek (8), bemeneti illesztő egységek (10) biztonsági vezérlőt működtető egységek (16) ke- resztül biztonsági vezérlőrendszer (18), amelyhez ajtómüködtető egység (20), főáramkör (23), felvonógép és fülkemozgató egység (24), kombinált motorvédő kapcsoló (30) van csatlakoztatva. A kombinált motorvédő kapcsolóhoz (30) hálózati vonalakon (44) keresztül főkapcsoló (43), a hálózati vonalakhoz (44) pedig dugaszoló aljzatok és vészjelző energiaellátó egység (45) van bekötve. A kombinált motorvédő kapcsolóhoz (30) és a főáramkörhöz (23) csatlakozó hálózati vonalakhoz (44) vezérlés, jelzés, ajtóműködtetés energiaellátó egység (32) van csatlakoztatva.  -1-
Patent HU-193051-B (HU)
Title: Process for preparing nystatine by means of a new streptomyces strain
Inventor: JARAI MIKLOS
IPC: C12P19/62
Filed: 1983-12-20
Abstract: Prepn. comprises propagation in aerobic conditions on nutrient contg. assimilable carbon and nitrogen sources of a strain of the microorganism Streptomyces noursei albidus, selected by growth on selective culture media after having been exposed to mutagenic action. Subsequently the antibiotic produced is sepd. from the fermentation liquor.
Patent HU-202232-B (HU)
Title: Process for producing 3-piperidinyl-indazol derivatives and pharmaceutical compositions of antihypertensive activity containing them as active components
Inventor: VANDENBERK JAN
IPC: A61K31/4184
Filed: 1989-09-01
Abstract: Novel antihypertensive 3-piperidinyl-indazole derivatives of formula   <CHEM>  wherein  R<1> is hydrogen or C1-6alkyl; R<2> is hydrogen; C1-6alkyl; substituted C1-6alkyl; optionally substituted phenyl; C1-6alkylcarbonyl; C1-6alkyloxycarbonyl or phenylcarbonyl, wherein phenyl may be substituted; R<3> and R<4> are hydrogen, halo, hydroxy, C1-6alkyloxy or C1-6alkyl;  Q is a bicyclic heterocyclic radical of formula <CHEM> the pharmaceutically acceptable acid addition salts and possible stereochemically isomeric forms thereof, which compounds are antihypertensive agents; pharmaceutical compositions containing such compounds as an active ingredient and methods of preparing said compounds and pharmaceutical compositions.
Patent HU-213871-B (HU)
Inventor: COURTNEY MICHAEL
IPC: C07K19/00
Filed: 1987-12-01
Abstract: (57) KIVONAT A találmány tárgya eljárás őlyan trőmbingátlóaktivitással rendelkező hirűdinvariánsők előállítására, amelyek atermészetes főrmában a 47. vagy 63. helyeknél levő aminősavaktól eltrő aminősavakat tartalmaznak. Ilyen variáns előnyösen a HV1, HV2 vagyHV3 hirűdin valamely váltőzata. A váltőzatők közül elsősőrban azők aváltőzatők jelentősek, – amelyben a Tyr63 aminősav valamely savasjellegű gyökkel, elsősőrban Glű-val vagy Asp-pal van helyettesítve; –amelyben a természetes hirűdin 47. helyzetében levő aminősav Arg-galvagy His-sel van helyettesítve; és – amelyben a HV2 természetesfőrmájának Asn47-e Lys-sel van helyettesítve. ŕ
Patent HU-201125-B (HU)
Inventor: TUROCZI JOZSEF
IPC: D06N7/00
Filed: 1988-10-20
Abstract: A találmány tárgya eljárás tényálló, mintás felületű anyagok, célszerűen tapéták előállítására. A találmány szerinti eljárással a burkolóanyagot úgy állítják elő, hogy -   50-70 tömegrész fehérített cellulózból, 20-30 tömegrész kezelt facsiszolatból és 10-20 tömegrész famentes papírból vagy papírhulladékból és a keverékre számított 10-20 tömeg% töltőanyagból egyrétegű alappapírt állítanak elő, -   ezután 5-20 tömegrész 40-60 tömeg%-os akrilát polimer diszperzióban - vagy adott esetben ennek legfeljebb 15 tömegrész 40-60 tömeg%-os butadién-sztirol latex-szel, poliuretán diszperzióval vagy PVC plasztiszollal alkotott elegyében - elkeverik 0.03-0,05 tömegrész fénystabilizátort és az elegyhez hozzákevernek 5-10 tömegrész oxidációval lebontott keményítőt, 0.5-1.5 tömegrész optikai fehérítőt, 55-65 tömegrész töltőanyagot és 6-10- tömegrész egyéb adalékanyagot, majd az így előállított mázanyagot felviszik az alappapír színoldalára. IA CM O CM 3 A leírás teijedelnie: 8 oldal, áhra nélkül -1-
Patent HU-208674-B (HU)
Title: Process for producing hydroxy-1,2,3,4-tetrahydroaminoacrydines and pharamceutical compositions comprising such compounds
Inventor: SHUTSKE GREGORY MICHAEL
IPC: C07D219/10
Filed: 1989-11-16
Abstract: There are disclosed compounds having the formula I <CHEM>  where  n is 1 or 2; X is hydrogen, loweralkyl, loweralkoxy, halogen, hydroxy, nitro or trifluoromethyl; R is hydrogen, benzyl or alkanoyl of 2- 12 carbons, with the proviso that the group -OR may not be on the 1-position of the three ring system; and R1 and R2 are each independently hydrogen, loweralkyl or arylloweralkyl, but both may not be arylloweralkyl simultaneously, or alternatively R1 and R2 taken together may constitute the group @@NR3R4 where R3 and R4 are each independently loweralkyl;  and a process for their preparation. The compounds can be used for the treatment of various memory dysfunctions characterized by decreased cholinergic function, such as Alzheimer's disease.
Patent IT-1120255-B (IT)
Title: Welding metals of high thermal and electrical conductivity - using electrode having negative temp. coefft.
IPC: F24J/
Filed: 1979-05-23
Granted: 1986-03-19
Abstract: Metal pieces of high thermal and electrical conductivity are welded together using electrodes whose electrical resistance decreases as the temp. increases. The electrodes are resiliently pressed on to the pieces. The electrodes are heated by the Joule effect and the heat generated is transferred by conduction to the pieces. Used for joining together of Cu and Al tubes, e.g. as elements of a refrigeration circuit. Excellent weld quality is achieved using low cost, simple operation. The heat transmitted by the electrodes either melts the welding material or transforms the pieces to be welded into their plastic state. The electrodes may be movable towards the pieces to apply pressure during the joining operation. Brazing, other than torch brazing, can be used.