baber/WOPTO huggingface dataset:
Patent FR-2460077-A1 (FR)
Title: Pulse sampler with transformer isolation - detects line current using comparator amplifier to change secondary loading
Inventor: REYNAUD PASCAL
IPC: H04M3/22
Filed: 1979-06-26
Abstract: A sampling pulse (ip) saturates a transistor (TR) and the resulting current pulse through a 1:1 transformer (TF) primary is measured by the drop (Vm) across a series resistor (R8). This is determined by the secondary load, which is either 10k (R6) or appr 0.9k if a 1k resistor (R7) is connected in parallel by one of two comparator-amplifiers (AC1,2). The comparator-amplifiers are driven by the drop across a 40hm R (R1), in series with a telephone line (LT), together with a fraction of the pulse voltage added or subtracted by two 47 ohm Rs (R5,4). With no line current, neither comparator-amplifier conducts and the pulse O/P (Vm) is small. One conducts if the current in either direction exceeds a threshold, set by the 47ohm Rs (R5,4), and the O/P is then approximately 10 times greater. The sampling circuit is isolated from line potential by the transformer. Spikes on the line are filtered by two 100k Rs (R2,3) and C1.
Patent FR-2460561-A1 (FR)
Title: Electrical generator for e.g. charging vehicle battery - uses wind pressure variation which is transmitted to quartz or ceramic piezoelectric element
IPC: F03B13/14
Filed: 1979-07-03
Abstract: The electrical energy generator uses the variation of wind pressure transmitted to a quartz or ceramic piezoelectric element. The generator may be housed on a vehicle bonnet and used to assist battery charging. Alternately the generator may be housed in lines to a sail or branches of a tree. The piezoelectric element (29) is housed within a double cage to increase the possible element size. The cages consist of upper and lower plane surfaces spaced by corner pillars, the base of the larger of the two cages moving on the pillars (26) of the inner cage. Energy is transmitted to the element via hooks (19,19') on the outside surfaces of the assembly to which are connected the lines to the sail.
Patent FR-2434528-A1 (FR)
Title: Systeme de commutation de telecommunications automatique
IPC: H04M3/36
Filed: 1979-07-31
Abstract: Système de commutation de télécommunications automatique. La présente invention concerne un système de commutation de télécommunications automatique qui comprend un réseau de commutation avec une pluralité de circuits et de moyens de commande aptes à occuper et utiliser des circuits pour la réalisation de connexions dans le réseau, les moyens de commande comprenant des moyens de balayage et de détection pour le balayage des circuits et la détection d'au moins un type de changement d'état et d'autres événements, chaque circuit étant apte à se trouver dans l'état occupé ou libre, des premiers moyens de registre associés à un groupe d'au moins un des circuits et aptes à accumuler les changements d'état détectés, et des seconds moyens de registre associés à chacun des circuits pour enregistrer les autres événements détectés, et des moyens de lecture pour lire régulièrement pour chaque circuit le contenu d'un des moyens de registre associés à ce circuit et pour lire le contenu de l'autre moyen de registre lorsque le premier moyen de registre a accumulé une valeur prédéterminée. Application aux systèmes de commutation téléphonique.
Patent FR-2462120-A1 (FR)
Title: Conformateur de galbage pour la partie arriere de chaussures
Inventor: BICHET LUCIEN
IPC: A43D11/12
Filed: 1979-08-03
Abstract: LA MACHINE DE CONFORMATION DES ARRIERES DE CHAUSSURES EST DU TYPE COMPRENANT, MONTES SUR LE MEME BATI, DEUX POSTES SUPERIEURS DE REACTIVATION DE LA COLLE D'ASSEMBLAGE DES ELEMENTS DE CHAUSSURE ET, A LA PARTIE INFERIEURE, DEUX ENSEMBLES CONFORMATEURS DES EMBOITAGES CONSTITUES PAR UNE PREFORME ET UN POINCON APTES A S'ENGAGER L'UN DANS L'AUTRE POUR SERRER FORTEMENT LA TIGE DE LA CHAUSSURE. SELON L'INVENTION, LA MACHINE EST MUNIE DE MOYENS PERMETTANT A CHAQUE CONFORMATEUR DE TRAVAILLER EN TROIS TEMPS, A SAVOIR: A.MAINTIENT DE LA PIECE DE CHAUSSURE SUR LA FORME (OU POINCON) ET ADAPTATION A LA HAUTEUR DE LA TIGE DE CHAUSSURE; B.POSITIONNEMENT DE LA PIECE PAR MAINTIEN DU CONFORMATEUR DE PREFORME SUR LA TIGE A FAIBLE PRESSION; PUIS C. CONFORMATION PROPREMENT DITE PAR SERRAGE DE LA TIGE ENTRE LES DEUX ELEMENTS DU CONFORMATEUR SOUS PRESSION ASSEZ ELEVEE DE 5 A 6 KGCM.
Patent FR-2436431-A1 (FR)
Title: Circuit electrique de commande et procede de production d'un signal de commande dans un systeme logique
IPC: B21B37/64
Filed: 1979-08-09
Abstract: L'invention concerne un circuit électrique de commande. Le circuit est caractérisé en ce qu'il comprend une boucle à jonction de sommation comportant un convertisseur analogique-numérique, un convertisseur numérique-analogique, deux résistances égales et un amplificateur de sommation de gain égal à l'unité, dont la sortie peut être reliée au système à commander, des moyens étant prévus pour bloquer le signal de sortie du convertisseur numérique-analogique à un instant prédéterminé Application aux commandes de laminoirs et machines à souder par étincelage.
Patent FR-2463758-A1 (FR)
Title: Ethylene recovery from pyrolysis gas mixts. - by condensation and removal of methane
IPC: C01B3/50
Filed: 1979-08-23
Abstract: Process and appts. are claimed for the sepn. of olefins from pressurised gas mixts. comprising H2, CH4 and olefins. The method comprises (a) cooling the feed mixt. (I) by sequential stages to condense the olefins and part of the CH4 and H2, (b) sepg. at each cooling stage, the condensate from the gaseous residue, (c) demethanising the condensate to obtain pure olefins, and a residual gas mixt. (II) of H2, CH4 and traces of ethylene, (d) cooling (II) to obtain further condensate and using the liquid as a spray in the lemethanising step, (e) introducing the remaining cooled (II) into a first vortex tube to cause expansion and formation of a hot gas stream (III) and a cold gas stream (IV), (f) using (IV) to c cool (II( from step (c), (g) mixing (III) and (IV) and passing the mixt. through a second vortex tube to form a second hot gas stream (V) and a second cold gas stream (VI), (h) subjecting (I) to countercurrent heat exchange with (V), using (VI) to cool first (II) from step (c) and then (I), and (i) collecting olefin product from (c) and venting (II), having a reduced ethylene content, from the process. The process is used for recoving ethylane in yields of 99% or more from naphtha pyrolysis effluents. The appts. is simple in design, contg. no structural elements with moving parts, reliable and adaptable to automatic operation, No additional energy sources are required and in fact total energy demand is reduced.
Patent FR-2467938-A1 (FR)
Title: Insulating wall cladding tile - has rebated edges for half housing joints with dovetail section rear face pockets for keying to mortar bed
Inventor: SAREL VICTOR
IPC: E04F13/08
Filed: 1979-10-19
Abstract: The insulating tile (1) is used to clad walls or partitions, using half-housing edge formations (2,3,4,5) and rear face anchor pockets (6,7,8,9) which key onto a mortar bedding screed. The half-housed edge joints may be accommodated by rebated tile edges. Two adjacent edges have a continuous overhang tongue (2,3) and the remaining edges have the complementary rebate (4,5). The pockets (6,7,8,9) may be cylindrical with a dovetail section (10), or may incorporate upstanding helicoidal bore ramps which provide the shear key.
Patent FR-2440758-A1 (FR)
Title: Jeu a deux joueurs a figurines mobiles
IPC: A63F9/30
Filed: 1979-11-05
Abstract: JEU COMPRENANT UNE MULTIPLICITE DE PIECES A JOUER 10 REPOSANT SUR UNE PLATE-FORME DEPLACABLE VERTICALEMENT PAR LES JOUEURS DE MANIERE A PROJETER UNE PIECE A JOUER DANS UNE COUPE DE MAINTIEN CENTRALE. DEUX FIGURINES 62, 64 SONT MONTEES A PIVOTEMENT DE DEUX COTES DIAMETRALEMENT OPPOSES DE LA PLATE-FORME ET PORTENT UN ANNEAU 66, 68 A BAGUE INTERNE FLEXIBLE POUR SAISIR UNE PIECE A JOUER DANS LA COUPE DE MAINTIEN LORSQUE LA FIGURINE EST BASCULEE VERS LE BAS PAR UN JOUEUR. UN MECANISME DE COMMANDE 118, 120 EST RELIE A LA COUPE DE MAINTIEN ET A CHAQUE FIGURINE.
Patent FR-2446590-A1 (FR)
Title: Self-opening seedling raising frame - has lifting arm and operating piston-cylinder unit mounted on support secured to end wall by screw (NL 24.7.80)
IPC: A01G9/24
Filed: 1979-12-17
Abstract: The plant or seedling raising frame with an automatic lid opening mechanism, controlled by a rise in temperature, as in 2639028, has a lifting arm (17) attached by a pivot pin (18) through the inner end of a fixed arm (15) projecting inside the frame. This is integral with a U-shaped part (5a) which fits over the edge of one end (1a) of the frame. This arm is locked in position by a screw (14) which passes through the external part (5c) of the U-shaped part. Movement of the lifting arm is controlled by a piston and cylinder unit (4') with an extension spindle (7), with an adjusting screw (13) carrying an internally threaded nut (12) with a forked end fitting around a peg (20) on the lifting arm.
Patent FR-2444563-A1 (FR)
Title: Panneaux en stratifies et procede de fabrication de ces stratifies
IPC: B32B15/08
Filed: 1979-12-21
Abstract: La présente invention concerne des panneaux de construction constitués de stratifiés métal-matériau thermoplastiquemétal et un procédé de fabrication de ces stratifiés, lesquels possèdent en combinaison un faible coefficient de dilatation linéaire, un faible rapport de non-élasticité et une excellente rigidité à la flexion.
Patent FR-2445666-A1 (FR)
Title: Circuit de ligne pour reseau de telecommunication assurant l'alimentation en courant des equipements terminaux de dedoublement des lignes a deux fils en lignes a quatre fils
IPC: H04B1/58
Filed: 1979-12-28
Abstract: L'invention concerne les équipements terminaux des circuits de lignes téléphoniques. Elle se rapporte à un équipement terminal dans lequel les résistances R1 et R2 assurent à la fois l'alimentation en courant de ligne et la formation de l'impédance de terminaison de ligne. A cet effet, l'amplificateur de retour A2 a une impédance élevée de sortie et l'amplificateur A1 d'aller a une impédance élevée d'entrée. Application aux réseaux téléphoniques à centraux électroniques.
Patent FR-2474085-A1 (FR)
Title: Escalier droit prefabrique
IPC: E04F11/025
Filed: 1980-01-23
Abstract: CHAQUE SUPPORT MT DE MAIN COURANTE EST FIXE AU LIMON L PAR DEUX BOULONS SUPERPOSES, LE BOULON SUPERIEUR ETANT LE BOULON D'ASSEMBLAGE FIXE AVANT 1A D'UNE MARCHE TANDIS QUE LE BOULON INFERIEUR EST LE BOULON D'ASSEMBLAGE REGLABLE ARRIERE 1B DE LA MARCHE IMMEDIATEMENT INFERIEURE, CE DERNIER BOULON 1B TRAVERSANT UN OEIL OBLONG DE LA MARCHE, UN TROU ROND DE LIMON ET UN OEIL OBLONG DU GOUSSET SOLIDAIRE DU MONTANT.
Patent FR-2474382-A1 (FR)
Title: Mould for concrete walls - has powered carriage with feed hopper and endless belts to form wall sides
Inventor: BEZHANOV TIGRAN VLADIMIROVICH
IPC: B28B1/08
Filed: 1980-01-30
Abstract: The concrete placer comprises a power-operated carriage and a feed hopper. Endless belts mould the lateral sides of a concrete layer and are parallel to one another on rolls with a vertical axis of rotation. Endless belts in one horizontal plane above the first and second endless belts exert vibration upon the concrete mix. One is mounted on two rolls with horizontal axis of rotation. One of the rolls has unbalances coaxial on its driving shaft. A fourth belt damps vibration of freshly placed concrete.
Patent FR-2459488-A1 (FR)
Title: Detecteur a scintillation utilisable dans un appareil de tomographie
IPC: G01T1/20
Filed: 1980-03-07
Abstract: DETECTEUR A SCINTILLATION UTILISABLE DANS UN APPAREIL DE TOMOGRAPHIE. LE DETECTEUR EST CARACTERISE EN CE QU'IL COMPREND UN PRISME DROIT 20 EN GERMANATE DE BISMUTH DONT UNE FACE EXTREME EST EN CONTACT OPTIQUE AVEC UN DISPOSITIF D'AMPLIFICATION DE LUMIERE 3 TANDIS QUE L'AUTRE FACE EXTREME EST EXPOSEE AU RAYONNEMENT, AU MOINS LES SURFACES LATERALES 24A, 24B DUDIT PRISME 20 ETANT POURVUES D'UN REVETEMENT REFLECHISSANT LA LUMIERE. APPLICATION EN TOMOGRAPHIE.
Patent FR-2478310-A1 (FR)
Title: Low power consumption fire detection circuit - uses semiconductor resistances each in series with heating filament and limiting resistor
IPC: G08B17/117
Filed: 1980-03-17
Abstract: The circuit has semiconductor resistances (RC1) which exhibit a resistance value which varies in dependence on the nature and the quantity of the gases to which they are exposed. Each semiconductor resistance has a series heating element (RC2) provided by a wire filament. Pref. a limiting resistance (R10) is in series with the semicond semiconductor resistance (RC1) and associated heating resistance (RC2) to limit the max. current through the latter when the semiconductor resistance (RC1) becomes saturated due to a high level of carbon monoxide gas. The signal detected is fed to an operational amplifier (C11) with a reference input (12) receiving a reference voltage adjusted via a potentiometer (P1) to ensure that the amplifier output is zero when no gases are present. The amplifier output pref. controls an LED (De1) providing a visual warning signal via a thyristor (II). The circuit is designed for min. current consumption.
Patent FR-2479953-A1 (FR)
Title: Air heater for domestic fireplace - has heat exchanger behind fire-back formed of metal sections
IPC: F24B1/188
Filed: 1980-04-02
Abstract: The heat exchanger is situated between the fireback and the wall. It consists of two sides fixed to the fireback and having supporting lugs equi-spaced from top to bottom. The cast-iron heat exchanger elements are supported on the lugs and form vertical divisions with interconnections or air ways between the elements. These are basically two types of element arranged alternately from top to bottom constructed to form a meandering path for the air which is fed vertically from below the hearth and discharged at the top.
Patent FR-2453865-A1 (FR)
Title: Derives de cephalosporine, leurs procedes de preparation, et medicaments antibacteriens contenant ces derives
IPC: C07D311/22
Filed: 1980-04-08
Abstract: L'INVENTION CONCERNE DE NOUVEAUX DERIVES DE CEPHALOSPORINE, REPRESENTES PAR LA FORMULE GENERALE: (CF DESSIN DANS BOPI) DANS LAQUELLE R, R ET R SONT CHACUN UN GROUPE HYDROXY, ACYLOXY OU L'HYDROGENE, A CONDITION QUE DEUX DES, OU LES TROIS SUBSTITUANTS R, R ET R NE SOIENT PAS EN MEME TEMPS L'HYDROGENE; R EST L'HYDROGENE OU UN GROUPE HYDROXY; OU LEURS SELS NON TOXIQUES; ET DES PROCEDES POUR LEUR PREPARATION. LES DERIVES DE CEPHALOSPORINE SELON L'INVENTION SONT UTILISABLES COMME MEDICAMENTS ANTIBACTERIENS.
Patent FR-2481351-A1 (FR)
Title: Drive for opening gate - has motor driven toothed rod pushing or pulling gate via roller in groove
IPC: E05F15/12
Filed: 1980-04-24
Abstract: The gate (9) is hung by hinges (11) to a corner post (10), the bottom of the gate carrying the L shaped angle iron (8) which has a groove in its upper face. The groove is inclined slightly to the line of the gate, so that, when a roller at the end of toothed rod (2) is inserted into the groove and is moved along it, the gate is opened or closed. A box (1) conceals a motor that drives a toothed cogwheel which, in turn, grips the rear of the toothed rod pushing or pulling it with respect to the gate.
Patent FR-2456862-A1 (FR)
Title: Machine a refoulement a transmission de couple hydrostatique au moyen de pistons a rouleaux
IPC: F04B1/04
Filed: 1980-05-12
Abstract: LA PRESENTE INVENTION EST RELATIVE A UNE MACHINE A REFOULEMENT A TRANSMISSION DE COUPLE HYDROSTATIQUE AU MOYEN DE PISTONS A ROULEAUX. CETTE MACHINE, CONSTITUEE D'UN BLOC-CYLINDRE 1 POURVU D'ALESAGES RADIAUX 3 DANS LESQUELS SONT LOGES DES PISTONS DONT CHACUN COMPREND UNE TETE 4, 4 ET QUI COMPORTE AU MOINS UN BOSSAGE, EST CARACTERISEE EN CE QUE CHAQUE PISTON ET LES ZONES DU BLOC-CYLINDRE QUI LUI SONT CONTIGUES COMPORTENT DES MOYENS PERMETTANT DE FAIRE PASSER UN COURANT DE FUITE DU FLUIDE AGISSANT SUR LA TETE DU PISTON PRESQUE EXCLUSIVEMENT PAR L'ESPACE DE PRESSION INTERMEDIAIRE. APPLICATION AUX MACHINES A REFOULEMENT.
Patent FR-2482452-A1 (FR)
Title: Tampon periodique ayant un revetement de surface
Inventor: BOITEAU CLAUDE
IPC: A61L15/40
Filed: 1980-05-13
Abstract: LE TAMPON PERIODIQUE SELON L'INVENTION EST CONSTITUE D'UN ROULEAU DE MATERIAU FIBREUX COMPRIME, UTILISABLE POUR LA PROTECTION INTERNE DES FEMMES PENDANT LEURS REGLES; POUR FACILITER L'INTRODUCTION ET L'EXTRACTION, APRES USAGE DU TAMPON PERIODIQUE SELON L'INVENTION, CE DERNIER COMPORTE SUR SA PAROI EXTERIEURE UNE COUCHE D'UN AGENT EPAISSISSANT OU GELIFIANT CONSTITUE PAR UN POLYSACCHARIDE EXTRAIT DE VEGETAUX.
Patent FR-2482552-A1 (FR)
Title: Propeller for model boat - has reciprocating rod carrying cone of bristles which collapses on forward stroke
IPC: B63H1/32
Filed: 1980-05-14
Abstract: The propeller is connected to a crank which drives a reciprocating rod (3). The rod is on the centre line of the vessel and passes through the stern gland. The end of the rod is fitted with a fixed hollow cone which holds the fixed ends of bristles, fibres or slats (1). The bristles are opened into a broad cone during the backward movement of the rod (3) and close to a cylindrical shape during the forward movement. The bristles are arranged so as to open into a regular shaped cone on the power stroke.
Patent FR-2484842-A1 (FR)
Title: Enclosed womb-like cabin for patient's suffering trauma - includes bath surrounded by ellipsoid envelope illuminated with diffuse coloured light and with loudspeakers and cassette player
IPC: A61M21/00
Filed: 1980-06-19
Abstract: The unit for relaxing a patient simulates a womb-like environment. It comprises a cabin in which is an elongate bath (2) with an ellipsoidal space (1) above it. The unit is acoustically insulated and has a cassette-recorder (H) mounted in the roof. This plays soothing music or human voice recordings through two loud-speakers (HP) also set in the roof. Diffuse coloured light which may be red, orange or violet illuminates the unit with a variable intensity. A ventilation duct (6) extends through the sidewall of the cabin.
Patent FR-2486317-A1 (FR)
Title: Retractable power socket for domestic appliances - has sprung hinge with integral cover plate with seal and is held by locking hook with self release mechanism
Inventor: SCHOLTES MAURICE
IPC: H01R24/76
Filed: 1980-07-01
Abstract: The body of the socket is carried on an arm which pivots on a horizontal axis inside a chassis to be fixed inside the appliance. The body of the socket passes through a hole cut in the top face. A spring around the pivot holds the socket in its working position. The socket is held in its retracted position by a locking mechanism when the socket is covered by a lid which rests over the opening with a watertight seal (16) around the edge of the opening. The locking mechanism consists of a spring loaded hook mounted on one side of the chassis and a pin on one side of the socket. The inside of the hook contains a tongue which is inclined outwards so that the socket can be unlocked by applying a slight downwards displacement to unsaddle the pin.
Patent FR-2486904-A1 (FR)
Title: Sleeve for sail-board mast - has soft sleeve material to prevent wishbone chafing against mast
Inventor: GENIN YVES
IPC: B63B35/79
Filed: 1980-07-21
Abstract: The sail board mast (2) is covered with a sleeve (3) made from thermo-plastic material and covering a distance over the length of the mast to allow fixing the wishbone in several positions. The wishbone (4) has an end bracket (5) attached to the mast by a cord. The sleeve may also be made of rubber and has a wall thickness of 1 to 4mm and a length of between 55 and 65mm located 100 to 120mm from the foot of the mast. The sleeve prevents the wishbone sides rubbing against the mast and marking it.
Patent FR-2463227-A1 (FR)
IPC: B23P19/06
Filed: 1980-08-11
Abstract: The screwing machine (1) which serves for screwing in the rail-fastening means is provided with a slip clutch (4, 8), the torque of which can be controlled by hand. In order to reduce the clutch pressing forces to be expended by the operator to an agreeable magnitude, there is arranged between the hand lever (5) and the slip clutch (4, 8) a first cylinder/piston aggregate (6) with a pressure control valve (9) and a pressure measuring device (10) as well as a second piston/cylinder aggregate (7).
Patent FR-2468968-A1 (FR)
Title: Procede et appareil pour enregistrer et reproduire magnetiquement des informations numeriques avec des tetes magnetiques a couplage alternatif
Inventor: NISHIMURA KAZUTOSHI
IPC: G11B20/10
Filed: 1980-10-24
Abstract: Procédé et appareil de transcodage d'informations numériques notamment pour l'enregistrement sur bandes magnétiques utilisant des transformateurs rotatifs branchés en amont des têtes d'enregistrement et de lecture. La section d'enregistrement d'un tel appareil comporte notamment un codeur 13 muni d'une mémoire morte 13a dans laquelle est inscrite une table de conversion; l'adressage de cette mémoire morte est réalisée en partie par le mot de données lui-même et par la sortie d'une porte OU-exclusif 13b dont l'état est conditionné par un calculateur de parité 17 et un calculateur de charge 18 alimentés par les signaux de sortie d'un registre à décalage 15 recevant lui-même les données lues dans la mémoire morte 13a. L'invention permet de s'affranchir de la composante continue du courant d'enregistrement, lequel pourrait provoquer des distorsions à son passage dans le transformateur rotatif.
Patent FR-2494605-A1 (FR)
Title: Racleur de liquide
IPC: B08B1/00
Filed: 1981-01-16
Abstract: L'INVENTION CONCERNE UN RACLEUR DE LIQUIDE DESTINE A UNE TIGE A LA SURFACE DE LAQUELLE ADHERE UN LIQUIDE. CE RACLEUR DE LIQUIDE COMPREND DEUX BRANCHES 1, 2 MONTEES DE MANIERE A POUVOIR PIVOTER AUTOUR D'UN CENTRE DE ROTATION 3. SUR CHACUNE DE CES BRANCHES 1, 2 EST PREVUE UNE SURFACE RACLEUSE 34, 35, CHAQUE FOIS TOURNEE VERS L'AUTRE BRANCHE ET QUI S'APPLIQUE LORS DU RACLAGE A LA SURFACE DE LA TIGE INSEREE ENTRE LES SURFACES DE RACLAGE 34, 35. L'INVENTION S'APPLIQUE NOTAMMENT AUX JAUGES DE NIVEAU D'HUILE DE MOTEURS.
Patent FR-2498716-A1 (FR)
Title: Reciprocating to rotating drive mechanism - has drive wheels incorporating free wheel in one direction
IPC: F16H29/02
Filed: 1981-01-29
Abstract: The guide consists of a reciprocating drive cage (21) having two tracks (24,25). The rotating shaft (20) carries two wheels (22,23) each having an outer ring (22b,23b) with a free wheel. The free wheels act in opposite directions. The shaft is driven only in one direction (F1) during both strokes of the reciprocating cage. The drive may be declutched by rotating the cage axially (in the direction of the arrow (F2)). The mating surfaces are coated in polyurethane having a good coefficient of adherence.
Patent FR-2490328-A1 (FR)
Inventor: SCHNYDER MAX
IPC: F27D99/00
Filed: 1981-05-21
Abstract: Kiln, in particular for thermoanalytical trials. The thermally inert mass of the kiln (10) is to be as small as possible, the insulation is to be effective but nevertheless allow a cooling of the kiln within a reasonable time period. The heating wire (20) has to be arranged in such a manner that no magnetic field is created in the kiln and a good heat transmission from heating wire to kiln wall is to be possible. The heating wire (20) is guided in continuous U-shaped loops around the kiln (10), the straight parts of the heating wire running parallel and as close as possible to the kiln wall. They can be arranged in small tubes (22) made of ceramic material which in turn are advantageously fastened outside on the kiln wall (14) by means of a ceramic cement (24). An insulating paper (26) surrounds the whole, surrounded by an outer wall (18) having a temperature sensor (30).