baber/WOPTO huggingface dataset:
Patent ES-2340909-B1 (ES)
Title: Sistema optico para laringoscopio y laringoscopio.
Inventor: ACHA GANDARIAS PEDRO
IPC: A61B1/12
Filed: 2008-07-01
Granted: 2011-01-18
Abstract: Sistema óptico para laringoscopio y
laringoscopio, siendo dicho laringoscopio curvo del tipo constituido
por un cuerpo con un tramo curvo y al menos un conducto de
visualización, que comprende prismas para la transmisión de la
imagen desde el extremo distal hasta el extremo proximal  del
mismo.
Patent ES-2382524-B1 (ES)
Title: Procedimiento de obtención de materiales híbridos de base carbonosa.
Inventor: PENAS SANJUAN ANTONIO
IPC: C01B31/02
Filed: 2010-11-15
Granted: 2013-05-10
Abstract: Procedimiento de obtención de materiales híbridos de base carbonosa.#La presente invención proporciona un procedimiento para la obtención de un material híbrido sólido poroso que comprende una base carbonosa unida a una poliamina mediante enlace amida, y al uso de dicho material para la captura de iones, preferiblemente de platino y de paladio.
Patent ES-2396087-B1 (ES)
Title: Procedimiento de montaje de un aerogenerador y aerogenerador montado según dicho procedimiento
Inventor: GARCIA MAESTRE IVAN
IPC: E04H12/34
Filed: 2011-06-30
Granted: 2014-05-19
Abstract: Procedimiento de montaje de un aerogenerador y aerogenerador montado según dicho procedimiento.#El objeto de la invención es un procedimiento de montaje de un aerogenerador que comprende una torre, una góndola y un rotor que mediante el empleo de unos medios adecuados logra un incremento en la velocidad de ejecución del montaje de un aerogenerador y por lo tanto de un parque eólico compuesto por varios aerogeneradores. Es también objeto de la presente invención el aerogenerador montado según el procedimiento anterior.
Patent ES-2441142-B1 (ES)
Title: Dispositivo con final de carrera
Inventor: LOSTALE GONZALEZ EMILIO
IPC: H01H19/18
Filed: 2012-07-31
Granted: 2014-11-07
Abstract: Dispositivo con final de carrera con interruptor base (1) de cuatro contactos NA para interruptor de posición (1), con una palanca rodillo (2), con un pasador de bloqueo (8) de dicha palanca rodillo (2), y con una caja central (4) con selector de posición con cuatro bloques de contactos auxiliares NA.#El dispositivo presenta una placa (9) de montaje y sujeción de dicho interruptor base (1) y dicha caja central (4).
Patent ES-2632201-B1 (ES)
Title: Cortatubos con calibrador y escariador/biselador de los bordes del tubo cortado
Inventor: SAINZ DE DIEGO CÉSAR
IPC: B26D3/16
Filed: 2016-03-10
Granted: 2018-07-17
Abstract: Cortatubos con calibrador y escariador/biselador de los bordes del tubo cortado. En el cuerpo (1) del cortatubos se conforma, al menos, un calibrador (11), entre la cual y el propio cuerpo (1) se delimita una cavidad (12) susceptible de admitir el extremo de un tubo (t); presentando cada calibrador (11) en su extremo una embocadura (111) que varía su diámetro entre un mínimo (d1) en su base y un máximo (d) que coincide con el calibre del tubo (t) que admite. También se dispone, al menos, un biselador (2) provisto de una o varias porciones (S) con, al menos, una cuchilla (21) en cada una de ellas. Insertado el tubo (t) en el calibrador (11), primero éste calibra el diámetro de su borde cortado igualándolo con el diámetro del resto del tubo (t) y después las cuchillas (21) biselan y escarian simultáneamente el interior y el exterior del borde cortado.
Patent ES-2583827-B1 (ES)
Title: Dispositivo de recarga inalámbrica
Inventor: GILBERGA IZQUIERDO JORDI
IPC: H02J7/02
Filed: 2016-03-30
Granted: 2017-06-27
Abstract: Dispositivo de recarga inalámbrica, que comprende una carcasa, un circuito-bobina eléctrico en el interior de la carcasa, y un medio de alimentación eléctrico exterior a la carcasa, siendo el medio de alimentación eléctrico vinculable eléctricamente con el circuito-bobina eléctrico y simultáneamente con capacidad de conexión con una red general de suministro eléctrico, y estando la carcasa habilitada para su inserción y cobertura en un mobiliario.
Patent HR-P20020550-B1 (HR)
Inventor: BLANCHARD PIERRE
IPC: B29B7/00
Filed: 2002-06-24
Abstract: Postupak pripreme glavnih smjesa ili koncentrata mineralnog punila ili mineralnih punila s visokom koncentracijom mineralne tvari (mineralnih tvari) ili punila, koji se mogu koristiti za punjenje termoplastičnih materijala pomoću navedenih mineralnih punila, koristeći polimere ili smjese polimera kao vezivo, naznačen time, da navedeni polimeri ili smjese polimera: -	sadrže barem jedan izotaktički polipropilen visoke fluidnosti; -	imaju postotak kristaliničnosti, koji se uobičajeno navodi kao indeks izotaktičnosti, veći od približno 20%, mjeren DSC metodom; i-	da je koncentracija glavne smjese ili koncentrata jednaka ili veća od 80 tež.% u mineralnim punilima. Patent sadrži još 43 patentna zahtjeva.
Patent JO-2087-B1 (JO)
Title: Pharmaceutical formulations
Inventor: GIOVANNI LUIGI MAPELLI
Filed: 1998-02-18
Granted: 2000-05-21
Abstract: Pharmaceutical formulations
Patent JO-3467-B1 (JO)
Title: Wear Assembly
Inventor: CHRISTOPHER M CARPENTER
IPC: E02F9/28
Filed: 2007-02-15
Granted: 2020-07-05
Abstract: A wear assembly for securing a wear member to excavating equipment that includes a base having a nose and a wear member having a socket. The nose and socket are each provided with one or more complementrary stablizing surfaces in central portions thereof.
Patent KR-800000870-B1 (KR)
Title: Method for polymerization of 1-olefins
Inventor: REKERS L
IPC: C08F4/78
Filed: 1975-01-23
Granted: 1980-08-28
Abstract: Reaction product(I) of CrO3 and triethylphosphate was supported on silica gel and treated at 400↿F to give catalyst for manufacture of 1-olefin with high melt index in high yields. For example, 9.70g CrO3 and 17.5g triethyphosphate were treated in dichloromethane and activated by fluidizing with dry air at 1,110↿F for 6 hr to give catalyst. 1-olefin was polymd. in the presence of the catalyst and triethylborane(B-Cr at ratio 2.7;1) at 200↿F, 435 psig gave polymer with high-load melt index 16.7
Patent KR-800000849-B1 (KR)
Title: Process for preparation of benzomorphans
Inventor: MONTZKA T
IPC: A61K31/435
Filed: 1975-04-18
Granted: 1980-08-26
Abstract: Benzomorphans(I; R=hydroxy protector; R1=-CH2-CCH, -CH2-CH=CH etc.; R3=lower alkyl, alkenyl; R4=H, lower alkyl; R5=lower alkyl, allyl or propargyl), useful as analgesics, were prepd. from compd. II. Thus, 0.02 mole 2, 5-dimethyl-2'-methoxy-9-oxo-6, 7-benzomorphan and 8 g cobalt chloride hexahydrate were reacted in 95% ethanol at room temp. for 0.5 hr, followed by addition of 4 g hydrogenated sodium borate in N2 gas, and the product was agitated for 18 hr to give 2, 5-dimethyl-9 -hydroxy-2'-methoxy-6, 7-benzomorphan.
Patent KR-790000872-B1 (KR)
Title: Dual cycle jet engine
Inventor: DAN HEUNG DEK
Filed: 1978-02-10
Granted: 1979-07-29
Abstract: Dual cycle jet engine, having a cone type diffuser on the opening of the air inlet, consisted of a turbo and ram engine which can operate simultaneously or separately by moving the cone type diffuser forward or backwards for throttling the air inlet. By operating the turbo engine only when landing or leaving the ground, fuel economy and perfect combustion can be provided.
Patent KR-820001247-B1 (KR)
Title: Installation for a nuclear power station with staggered swimming pools
Inventor: GIGOU R
IPC: G21C19/00
Filed: 1978-10-04
Granted: 1982-07-07
Abstract: The title installation with improved safety in removal of spent fuels comprises a pressurized water nuclear reactor building by a pool for handling fuel units under water and a fuel building with a 2nd lower pool for transfer, storage, and deactivation of the units.  The base of the 2nd pool is located at the same level as the reactor building site.  The 2 pools are connected by an intermediate auxiliary water filled chamber under the 1st pool which has vertical and horizontal pipelines leading to the 1st and 2nd pools respectively.
Patent KR-800000377-B1 (KR)
Title: Producing method of cubic sculpture
Inventor: CHO TAE JIN
IPC: B44C3/00
Filed: 1979-04-06
Granted: 1980-05-03
Abstract: The cubic sculpture of human fiqures and animal figures was manufd. by following method. a basic body and secondary body were made of a rubber and a synthetic resin as a flexible material separately.  The secondary body was conjugated on the basic body by an adhesive.  The conjugated on the basic body by an adhesive.  The conjugated body was covered with a cloth and colored with a paint.
Patent KR-840001010-B1 (KR)
Title: The producing method for a dinse liquid phase sintered alloy
Inventor: HAZZISUGA DAKECHI
IPC: B22F3/10
Filed: 1979-04-20
Granted: 1984-07-19
Abstract: Dense liquid phase sintered material, namely cermet, is produced by mixing hard material having a high m.p. such as metal carbide, nitride, oxide, boride and silicide; bonding the metal and locally positioned metal strand, plate or coarse grain; pressing the mixture; and sintering it. The locally positioned metal strand is 20 times bigger than bonding metal grain in diameter, has a melting temp. 120≰C higher than bonding metal, has good wetting ability with hard materials, and effective bonding ability. The metal strand is selected from the metal group having properties similar to the bonding metal. The pressed body is sintered at the temp. in which the bonding metal is in liquied phase and the metal strand is in solid phase.
Patent KR-800001713-B1 (KR)
Title: Apparatus for purifying exhaust gas for internal combustion engine
Inventor: BYUN SANG BOK
IPC: F01N3/10
Filed: 1979-06-05
Granted: 1980-12-31
Abstract: The apparatus comprised a cylindrical tube(2) set in a usual manifold and a conical tube(3) inserted in the cylindrical tube.  The tubes have holes on the surfaces in order to pass preheated air through them.  The tubes form a venturi tube so that the exhaust gas from the evgine flows with a high velocity and makes a pressure drop.  Therefore the preheated air and exhaust gas are contacted more homogeneously along a long range in a help to reburn and purify.
Patent KR-800001300-B1 (KR)
Title: Alloy for plastic injection mould
Inventor: LEE HAN JOONG
IPC: C22C5/00
Filed: 1979-06-27
Granted: 1980-10-27
Abstract: The copper base alloy has the hardness of HRB 90-99 and the good workability. The mixt. of 50.25-51.25 % Cu, 23.25 - 24.2 % Zn, 0.10 0.15 % Sn, 0.065 - 0.068 % Fe and 25 - 26 % Al is alloyed at 1100≰C for 14 - 16 min. before Aluminum is burned. After that the mixt. of 53.6 - 54 % Cu, 24.8 - 25.8% Zn, 1.5 - 2 % Sn, 0.005 - 0.068 % Fe and 20 - 21 % of the alloy above is alloyed at 1100≰C. And then, the plastic injection mold alloy is after all 63 - 64.8 wt % Cu, 30 - 31 % Zn, 5 - 6 % Al, 0.10 - 0.15 % Sn and 0.005 - 0.068 % Fe containing little impurities.
Patent KR-840000690-B1 (KR)
Title: The paper-supply device of electronic copying press
Inventor: UCHIDA KOHACHI
IPC: G03G15/00
Filed: 1979-11-14
Granted: 1984-05-18
Abstract: The paper-supply device includes a cassette body(3) having a bottom wall(3a), two side walls(3b,3c), a front wall(3d) and a rear wall(3e) to receive transfer papers; a pair of paper-separating crooks(4), each located at the corners(4a,4b) formed by the side walls and the front wall; and a movable cover plate(6) cooperating with the crooks.  At the upper portion of the front wall, a wide notch(5), which has two inclined guide surfaces(17) between the corner and the crook, is formed sufficiently to deliver the transfer papers.
Patent KR-850000544-B1 (KR)
Title: A wrist-type pulse monitor
Inventor: WILSON JOHN H WALBEOFFE
IPC: A61B5/02
Filed: 1979-11-14
Granted: 1985-04-26
Abstract: A wrist-type pulse monitor to digitaly interpret heart palpitations comprises a sensor detecting palpitations in the range of the normal pulse, a converter that changes the heart palpitation into an electric signal, an oscillator that sends the electric pulse at an arranged frequency, a clock circuit that calculates the number of pulses, an arithmetic apparatus to convert the calculated pulses into the rate of the heart palpitation, and an indicator that transforms the rate into a digital signal.
Patent KR-840000425-B1 (KR)
Title: Method of manufacturing low density plastic foam products
Inventor: KUMASAKA SADAO
IPC: B29C44/08
Filed: 1980-06-21
Granted: 1984-04-06
Abstract: The manufacturing process for low density plastic foam products comprises charging inside a mold 100 wt.% ethylene vinyl acetate copolymer, 20-80 wt.% foaming agent, and 1-5 wt.% cross-linking agent; molding the plastic foams by heating under pressure; cooling the products in the mold; removing the mold.
Patent KR-840000401-B1 (KR)
Title: Mixtures of optical brighteners
Inventor: MARTINI THOMAS
IPC: C09B57/00
Filed: 1981-03-05
Granted: 1984-03-30
Abstract: Mixtures of optical polish are composed of 1-99 wt.% of one or more compds.  of formula (I) and 99-1 wt.% of one or more compds of formula(II).  R1 and R2 = same or not, H or alkyl. n=0 or 1. x=0 or s. R3 and R4 = same or not, H, F, Cl, pheny1, trifluoromethy1, C1-9 alky1, alkoxy, dialkylamino, acylamino, cyano, carboxy, carboalkoxy, carboxamide, sulfonic acid, sufonic amide, or sulfonic acid alky1 ester. R3 and R4 form together benzoic ring, lower alkylene or 1,3-dioxapropylene arbitrarily.  B= cyano, -COOR5, or CONR5R5. R5 = H, C1-18 alky1, cycloalky1, ary1, alkylary1, haloary1, haloary1, aralky1, alkoxyalky1, haloalky1, hydroxyalky1, alkylaminoalky1 or etc.
Patent KR-860000562-B1 (KR)
Title: Electrode for use in electrolytic cell
Inventor: WOOLHOUSE ROBIN ANDREW
IPC: C25B11/02
Filed: 1981-07-29
Granted: 1986-05-14
Abstract: Electrode for a filter press type electrolytic cell comprises parallel vertical elongate members(9) on each side of a planar support(1) with each member attached at its end to the support such that a substantial part of each is in a plane parallel to and spaced from the support. The electrode is pref. flexible and the member faces are 2 - 10 wide. The members are pref. strips with those   on one side opposite to a space between two strips on the other side. The strip transverse faces are pref. curved, that facing away from the support being convex. The support is pref. a planar frame with the strips attached at opposite sides.
Patent KR-850001804-B1 (KR)
Title: High-frequency heating device
Inventor: SUZUKI YUKIO
IPC: H05B6/74
Filed: 1981-11-11
Granted: 1985-12-21
Abstract: A cross-shaped vibrating hole(24) carries into a heating chamber(2) a high cycle wave radiated from a high cycle oscillator(3). It(24) is formed on a rotary circle plate(21). An adiabatic part(25) is formed on the rotary circle plate(21) to avoid contact with the concentrated electrical charge of the metallic pieces(23). The adiabatic part(25) forms a gap between the metallic piece(23) and a plate(22). The gap is formed by a convex part(27) which separates the metallic pieces(23) from the plate(22). The adiabatic part(25) is a concave part.
Patent KR-820000156-B1 (KR)
Title: Process for preparing 7a-methoxy-7b-(1,3-dithiethan-2-carboxamido)cephalosporins
Inventor: IWANAMI M
IPC: C07D501/36
Filed: 1981-11-10
Granted: 1982-02-23
Abstract: The title compd. (I) 7α-methoxy-7β-(4-substituted methylene-1,3-dithiethan-2-yl) carboxamido-3-hetrocyclic thiomethyl-Δ3-cephem-4-carboxylic acid(R1 = carboxyl group or functional derivs. thereof; R2 = H, lower alkyl group, aryl group; R3 = lower alkyl-substituted tetrazolyl group or alkyl-substituted thiadiazolyl group) which was gram negative bactericidal, was prepd. by the reaction of VI(R6 = acetyl group or carbonyl group) with VII heterocyclic thiol.
Patent KR-900003907-B1 (KR)
Title: Magnetic objective lens for use in a scaning electron microscope
Inventor: NAKAKAWA SEIICHI
IPC: H01J37/141
Filed: 1982-01-14
Granted: 1990-06-04
Abstract: A magnetic objective lens for use in a scanning electron microscope comprises a lower magnetic pole piece (7) having a bore dimeter D1, an upper magnetic pole piece (6) having a bore diameter D2 which is larger than D1, an outer magnetic pole piece (20) having a bore diameter D3 which is larger than D1, a first excitation coil (12) for generating a magnetic field between the lower magnetic pole piece and the upper magnetic pole piece, and a second excitation coil (13) for generating a magnetic field between the lower magnetic pole piece and the outer magnetic pole piece.
Patent KR-880001448-B1 (KR)
Title: Shoes
Inventor: MINAGUCHI HOICHI
IPC: A43B21/24
Filed: 1982-05-15
Granted: 1988-08-10
Abstract: A back part of the left shoe heel is cut in the angle (α) of 10≰-16≰ to the ground and the right one in the angle (β) of 20≰-25≰ to prevent the slip in walking.  The lines (E, F) drawn perpendiculaly to the straight lines (A, B) drawn between ground contacts of the inner side of a foot are cut-lines in both shoes.
Patent KR-880001298-B1 (KR)
Title: Method for preparing benzoyl-phenyl-piperidine derivatives
Inventor: BERNARD MANOIE
IPC: C07D/
Filed: 1982-06-29
Granted: 1988-07-22
Abstract: Benzoyl-phenyl piperidine derivs. (I) and its acid addn. salts are prepd. by reactng 2-halogeno-5-nitro-benzophenone with substd.- piperidine in the inert solvent.  R1, R2 and R3=same or not, each may be H, OH, CF3, halogen or lower alkyl; R5 and R6=same or not, each may be H, lower alkyl, Ph or benzyl; X=halogen. Dissolve 2,4'- dichloro-5-nitrobenzophenone 20.7g, 4-methyl-piperidine 11.4mL and K2CO3 10g in anhydrous EtOH 100mL and reflux for 3 hrs, cool and filter, wash cake with water and dry, recrystallize in EtOH to give 18g (yield=71.7%) of [2-(4methyl-1-piperidinyl)-5-nitrophenyl -(4- chlorophenyl)-methan one.
Patent KR-890004488-B1 (KR)
Title: Sintered material for cutting tool having excellent high temperature characteristics and its priduction
Inventor: SUZIKAWA TAIZIROU
IPC: C22C27/04
Filed: 1982-10-15
Granted: 1989-11-06
Abstract: A sintered material has the composition of, by atom%, 5-25 Ti; 5-20 one or two of Zr and Hf; 5-20 Nb and or Ta; 15-40C, 1-10B and the bal. W and inevitable impurities with the proviso of W=20.55. It has the structure comprising a binder phase based on a W-based alloy and hard phase composed of a compound based on Ti, C, and B and another compound phase based on C, B and two of Zr and Hf. This sintered material is useful as a high-speed machining tool to be used at high temperature, and is improved in its resistance to abrasion, plastic deformation, oxidation, and shock.
Patent KR-890002376-B1 (KR)
Title: Peroxy acid bleaching and laundering composition
Inventor: DORMAL MARK
IPC: C11D3/39
Filed: 1982-10-28
Granted: 1989-07-02
Abstract: A bleaching detergent compsn. comprises (a) 5-50 wt.% of a bleaching agent contg. monoperoxyphthalic acid and/or its water soluble salt which is devoid of inorganic peroxygen cpd., (b) at least 5 wt.% of a chelating agent, (c) 5-50 wt.% of one or more surfactants selected from anionic, cationic, nonionic, ampholytic and zwitterionic detergents, (d) 5-80 wt.% of a detergent builder, and (e) a remainder contg. water and opt. filler salt.  The bleaching compsn. is effective at a relatively low washing temperature.
Patent KR-870002183-B1 (KR)
Inventor: LEE JUN-JONG
IPC: C21D8/00
Filed: 1984-02-17
Granted: 1987-12-28
Abstract: 내용 없음.
Patent KR-900007500-B1 (KR)
Title: Active agent dispenser
Inventor: ZAFFARONI ALEJANDRO
IPC: A61K9/70
Filed: 1984-04-30
Granted: 1990-10-11
Abstract: A dispenser comprises a matrix material containing an active agent at concentration greater than the saturation conc. of agent in the matrix, and a depleted zone of matrix containing the agent at no more than saturation concentration, the zone lying between the first matrix and a surface through which the agent is to be released. The interface between first and second matrixes is at a nonuniform distance from the releasing surface. The interface is in a plane oblique to the surface, or the first matrix is between two zones for release through two surface. The zone may be formed as a body with at least one convergent inward recess, with an agent-impermeable barrier on the dispenser exterior except for the releasing surface. The two marixes are of the same material.
Patent KR-910007619-B1 (KR)
Inventor: GRAFF PAUL
IPC: D04B7/16
Filed: 1984-08-16
Granted: 1991-09-28
Abstract: 내용 없음.
Patent KR-910003442-B1 (KR)
Inventor: EUDIER MICHEL
IPC: F16C33/12
Filed: 1984-11-27
Granted: 1991-05-31
Abstract: 내용 없음.
Patent KR-930009844-B1 (KR)
Inventor: MAILE DONALD W
IPC: H02M3/335
Filed: 1985-02-21
Granted: 1993-10-12
Abstract: 내용 없음.
Patent KR-880002435-B1 (KR)
Title: Process for the preparation of amino alkyl phosponate derivative
Inventor: CHONG IL-NAM
IPC: C07F9/10
Filed: 1985-05-09
Granted: 1988-11-12
Abstract: Title compds. of formula, HOP(O)(OH)CH2NHCH2R [(I), R= alkylphenyl, substd. phenyl, CN, CO2R, OR, SR, CO2H, halogen  were prepd. and are useful as a plant=growth regulator and a herbcide. Thus, poly(dimethylsiloxyphosphate) was reacted with 1,3,5-tricyanomethyl- hexahydro-1,3,5-triazine in BF3-ether for 2hr at 45±5↿C to give 74% (I)(R=CN).
Patent KR-930000316-B1 (KR)
Inventor: GABE KATSUYUKI
IPC: B60C9/18
Filed: 1985-05-10
Granted: 1993-01-15
Abstract: 내용 없음.
Patent KR-900007697-B1 (KR)
Title: Goveror device for printer
Inventor: NIHIRA SHOHACHI
IPC: B41J19/02
Filed: 1985-05-18
Granted: 1990-10-18
Abstract: The mechanism controls the paper sheet supply to the printer and includes a stop and flywheel drive controller, also an accelerator gear which engages a drive gear. The printer paper supply control includes a centrifugal force controller and a sector shaped drive gear (10) rotatable on a spindle (14) which engages a ratchet gear (12). Between drive gear (10) with journal (16) and fixed journal (16) is fitted a tension spring (20) which provides a centrifugal force drive. On the side of the drive (10) is a ratchet (22) rotatable on a spindle (24), of which the front is encompassed by a spring (26) and is pushed against a ratchet gear (12).
Patent KR-910004020-B1 (KR)
Inventor: NAKAJIMA MASAHIKO
IPC: B23K3/02
Filed: 1985-07-30
Granted: 1991-06-22
Abstract: 내용 없음.
Patent KR-920003897-B1 (KR)
Inventor: ONOUE HIROSHI
IPC: C07D499/04
Filed: 1985-08-20
Granted: 1992-05-18
Abstract: 내용 없음.
Patent KR-940009009-B1 (KR)
Title: Method and apparatus for forming an elastomeric strip for a tire tread slab
Inventor: TOLONEN ERIC O
IPC: B29C48/49
Filed: 1986-05-07
Granted: 1994-09-29
Abstract: Apparatus for forming an elastomeric strip formed from at least two elastomeric compounds, for example to use as a pneumatic tire tread strip. Extrusion means advance two or more elastomeric materials (60) under pressure toward a final chamber; from which material is extruded between a final die (50) and a roller (70). A head assembly (30) and a preform die (62, 64) are positioned in serial flow relationship between said extrusion means and said final die, and flow chambers formed within said head assembly and said preform die intercommunicate said extrusion means with said final chamber. Flow chambers within the preform die converge to at least one common junction within said preform die to form a single preform die exit chamber wherein a multi-material flow of elastomeric materials is established for passage into said final chamber for final extrusion therefrom.