baber/WOPTO huggingface dataset:
Patent FR-2454105-A1 (FR)
Inventor: HELLOCO GUY YVES LE
IPC: G01S7/48
Filed: 1979-04-10
Abstract: 1. Photoreceiver device for a narrow band useful signal, of the type comprising a photomultiplier transducer (10) associated with a controlled polarisation circuit (15, 16) which regulates the multiplier factor thereof, a main amplifier (11) connected between the output of the photomultiplier and the output terminal (12) of the photoreceiver device as well as a polarisation control chain connected between the output of the main amplifier (11) and the control input of the polarisation circuit, a device in which, - it being noted that the output terminal finally gives the useful signal, of level Ns , a noise multiplied by the transducer of level Nb  ; due to the ambient illumination as well as to inherent characteristics of the transducer and a noise not multiplied by the transducer, of level Nx , due solely to inherent characteristics of the transducer and of the main amplifier, these noise levels being assigned to the same width of reference band, - the control chain comprises : a level detector circuit (130, 131) connected to the output of the amplifier (11) for detecting the general output level there of Ns + Nb + Nx , an auxiliary signal generator (21) of predetermined level linked with a reference level K and a comparator (14) where of the two inputs respectively receive the output of the detector circuit (130, 131) and a signal drawn from the output of the auxiliary signal generator (21, 230, 231), where as its output controls the polarisation circuit (15), in order that the latter respects the relationship : Ns + Nb + Ns = K, characterized by the fact that : - the auxiliary signal generator (21) produces a signal (FR) where of the frequency band is separated from that of the useful signal of the transducer. - this signal is applied to the input of the main amplifier (11) with the output of the phototransducer, - the detector circuit comprises a band-cut filter (130) connected to the output of the main amplifier (11), eliminating the auxiliary signal and followed by a level detector stage (131), as well as a band-pass filter (230) connected to the output of the main amplifier (11), selecting the auxiliary signal and followed by a second level detector stage (231) and - the comparator (14) receives at its input the respective outputs of the two level detector stages (131, 231), so that : - when the level Ns of the useful signal is much less than the noise levels Nb  and Nx , the control condition is Nb + Nx = K, - when the level Ns  of the useful signal is of the same order as that of the noises, it being noted that the amplified noise is then negligible, the control operates with automatic gain control in order to keep the output signal of the photoreceiver device substantially constant, - where as when the level Ns  of the useful signal is much higher than the levels Nb  and Ns  of the noises, the polarisation circuit (15) produces a predetermined polarisation corresponding to a minimal multiplier factor.
Patent FR-2455313-A1 (FR)
Title: Automatic tracking of radiative energy source - focusses received radiation to activate electric, fluidic, or pneumatic control of focussing devices
IPC: F24S50/20
Filed: 1979-04-27
Abstract: A moving optical system tracks a source of radiation, such as the sun, by using double curvature focussing mirrors (1) or lenses to concentrate the radiation onto a particular part of the appts. which is heated directly, or holds the ends of optical fibres which concentrate the radiation on to photoelectric cells. In the former case a fluid is heated by the focused radiation and the appts. includes a piston in a cylinder which is moved by the expanding fluid. The movement of the piston alters the position of the optical system to the position giving max. heating of the fluid. The electrically operated system uses the electricity generated by the photocells to control electric, fluidic, or pneumatic actuation of the optical system.
Patent FR-2465281-A1 (FR)
Title: Dispositif de transmission numerique et d'affichage de graphismes et/ou de caracteres sur un ecran
Inventor: LORIG BERNARD
IPC: G08C21/00
Filed: 1979-09-12
Abstract: DISPOSITIF DE TRANSMISSION NUMERIQUE ET D'AFFICHAGE DE GRAPHISMES ETOU DE CARACTERES SUR UN ECRAN. CE DISPOSITIF COMPREND UN TERMINAL 5 RELIE A UN RESEAU DE TRANSMISSION 3, A UN DISPOSITIF D'ACQUISITION DE GRAPHISMES 4 ET A UN ORGANE D'AFFICHAGE SUR UN ECRAN 6. CHAQUE TERMINAL COMPREND UN ORGANE DE MEMORISATION QUI, SELON L'INVENTION, COMPREND UNE PLURALITE DE PLANS-MEMOIRE VALIDABLES EN PARALLELE, CHAQUE PLAN-MEMOIRE COMPRENANT UN CIRCUIT REALISANT UNE COMBINAISON LOGIQUE ENTRE UN MOT D'ENTREE ET LE MOT DEJA ECRIT A L'ADRESSE INDIQUEE. APPLICATION A LA REALISATION DE SYSTEMES DE TELEECRITURE OU DE SYSTEMES MIXTES DE TELEECRITURE ET DE VIDEOTEX.
Patent FR-2437265-A1 (FR)
Title: Procede de fabrication d'une plaque a surface durcie
IPC: B23K9/04
Filed: 1979-09-27
Abstract: CE PROCEDE CONSISTE A FIXER UNE PLAQUE DE MATIERE SOUDABLE ET RELATIVEMENT DUCTILE AUTOUR D'UNE SURFACE DE SUPPORT CYLINDRIQUE, PUIS A SOUDER UNE MATIERE DE DURCISSEMENT A LA SURFACE DE LA PLAQUE, CE QUI PROVOQUE LE RETRAIT DE LA PLAQUE CONTRE LA SURFACE DE SUPPORT ET LA MAINTIENT EFFECTIVEMENT EN PLACE EN EVITANT UNE DEFORMATION SENSIBLE AU COURS DE LA SOUDURE. DE PREFERENCE, LA COMPOSITION DE LA MATIERE DE DURCISSEMENT EST PROPRE A FORMER DES FISSURES, AU HASARD, A RAISON D'AU MOINS UNE FISSURE POUR 7,6CM LORS DU REFROIDISSEMENT. LA SURFACE CYLINDRIQUE QUI PEUT ETRE UNE PARTIE D'UN TAMBOUR, TOURNE AUTOUR D'UN AXE HORIZONTAL TANDIS QU'ON FORME UNE OU PLUSIEURS GOUTTES DE SOUDURE SUIVANT LA PERIPHERIE DE LA PLAQUE. APPLICATION AUX PALES DE VENTILATEURS.
Patent FR-2466865-A1 (FR)
Title: Mfg. panel of solar cells forming photoelectric battery - where cells are embedded in thermoplastic films welded together and located above laminate contg. reflecting metal foil
Inventor: SALLES YVON
IPC: H01L31/048
Filed: 1979-09-28
Abstract: An assembly of solar cells, which are connected together electrically and provided with output terminals, is located in cavities in a thermoplastic film (5), which can be welded to an upper, transparent thermoplastic foil (6) through which solar rays reach the active surfaces of the cells; and film (5) can also be welded to a lower thermoplastic foil (7). Foil (6) is covered by a transparent rigid element or pane (8), which can be welded to foil(6); whereas foil (7) is located above a flexible metal foil (10) resting on a polymer (11). The assembly is welded together; and pane (8) is pref. glass, whereas foils (5,6,7) are pref. polyvinyl-butyral; and foil (10) is pref. Al or an Al alloy. Polymer (11) is pref. PVC, and is pref. sepd. from foil (10) by a mesh fabric (12) made esp. from polyester-, polyamide-, glass-, carbon-, or boron- fibres. This battery has a lower cost than that described in an earlier RTC patent 2349959.
Patent FR-2457581-A1 (FR)
Title: Matiere d'etancheite pour joint de bougie d'allumage et cette bougie
Inventor: PODIAK RICHARD STANLEY
IPC: H01T13/36
Filed: 1979-10-08
Abstract: L'INVENTION CONCERNE UNE BOUGIE D'ALLUMAGE COMPORTANT DES JOINTS D'ETANCHEITE AUX GAZ RESISTANT AUX HAUTES TEMPERATURES 15. LA MATIERE D'ETANCHEITE CONSTITUANT CES JOINTS COMPREND D'ENVIRON 15 A 30 EN POIDS DE POUDRE DE SILICIUM METALLIQUE ET D'ENVIRON 85 A 70 EN POIDS DE TALC. LES PROPRIETES D'ETANCHEITE AUX GAZ ET DE MAINTIEN DE CETTE MATIERE RESTENT CONSTANTES AUX TEMPERATURES ATTEIGNANT OU DEPASSANT 480C. DOMAINE D'APPLICATION: BOUGIES POUR MOTEURS A COMBUSTION INTERNE.
Patent FR-2467536-A1 (FR)
Title: Agricultural bale loader and transporter - has conveyor lifting bale to intermediate platform for sideways transfer then onwards to load surface
Inventor: JACQUELIN ROGER
IPC: A01D90/08
Filed: 1979-10-23
Abstract: The bale transporter for straw or hay Dales, is a trailer with a conveyor (21) at one end, or one side, which lifts each bale from ground level, and carries it upwards to an intermediate platform (19) at the top. This has two conveyors (20) which carry the bale sideways onto a larger platform (7) across that end. The bale strikes a switch (26) at the top which starts up the double conveyor. After being carried sideways, the bale strikes a second switch (27) which operates a further conveyor (6) forming the load surface of the trailer. At the same time the larger platform is swung about a horizontal axis (8) across the end from a horizontal position to a vertical position.
Patent FR-2440821-A1 (FR)
Title: Appareil pour former et appliquer des gaines tubulaires en matiere plastique a des bouteilles en verre
IPC: B29C53/44
Filed: 1979-11-05
Abstract: DANS LA PRESENTE INVENTION, UNE GAINE TUBULAIRE 28 EN MATIERE PLASTIQUE EST FORMEE AUTOUR D'UN MANDRIN 27 ET EST EMBOITEE TELESCOPIQUEMENT SUR UNE BOUTEILLE PRECHAUFFEE 41 AVEC LAQUELLE ELLE EST ALIGNEE PREALABLEMENT. UN MOYEN DE BLOCAGE, COMME PAR EXEMPLE PLUSIEURS DOIGTS 42 D'APPLICATION DE VIDE, S'ETEND VERS LE BAS ET MAINTIENT LA GAINE EN MATIERE PLASTIQUE EN POSITION PENDANT QUE LE MANCHON 33 D'EMBOITEMENT DE GAINE EST RAPPELE DANS SA POSITION INITIALE. LA CHALEUR DE LA BOUTEILLE ENTRAINE UNE LEGERE CONTRACTION DE LA GAINE, DE SORTE QUE CELLE-CI SE MAINTIENT D'ELLE-MEME SUR LA BOUTEILLE AVANT D'ETRE SOUMISE A UNE OPERATION DE CONTRACTION THERMIQUE AU COURS DE LAQUELLE ELLE VIENT ADHERER FERMEMENT AU RECIPIENT.
Patent FR-2471938-A1 (FR)
Title: Dispositif d'enroulement pour grillage a simple torsion
Inventor: PILBOUE PIERRE
IPC: B21F33/00
Filed: 1979-12-19
Abstract: DISPOSITIF POUR METTRE EN ROULEAU DU GRILLAGE A SIMPLE TORSION. CE DISPOSITIF COMPREND POUR SUPPORTER LE ROULEAU DE GRILLAGE, AU MOINS DEUX ENSEMBLES EN FORME DE V DE CHACUN DEUX BRINS D'UN ORGANE TEL QU'UNE CHAINE, LE PLAN DE CHACUN DESDITS ENSEMBLES ETANT SENSIBLEMENT PERPENDICULAIRE A L'AXE DU ROULEAU, LESDITS ENSEMBLES ETANT ECARTES LES UNS DES AUTRES D'UNE DISTANCE SENSIBLEMENT EGALE A UN MULTIPLE DE LA DIAGONALE DE LA MAILLE DU GRILLAGE CONSIDERE, ET CHAQUE BRIN ETANT SUSCEPTIBLE DE S'ENGAGER DANS UN CHEVRON FORME PAR LES RANGS DE MAILLES RABATTUS, ET GAGER DANS UN CHEVRON FORME PAR LES RANGS DE MAILLES RABATTUS, ET EN CE QUE LESDITS BRINS SONT AGENCES POUR ETRE ANIMES D'UNE VITESSE LONGITUDINALE INFERIEURE A LA VITESSE D'AMENEE DU GRILLAGE AU DISPOSITIF.
Patent FR-2445470-A1 (FR)
Title: Appareil de changement de vitesse a plusieurs etages pour tracteur
IPC: F16H3/56
Filed: 1979-12-27
Abstract: a. Appareil de changement de vitesse à plusieurs étages pour tracteur. b. Appareil caractérisé en ce qu'il comprend un changement de vitesse de déplacement principal A; un arbre de transmission intermédiaire 22; un appareil de réduction de vitesse à mécanisme planétaire B; un pignon de petit diamètre 29 calé sur l'arbre intermédiaire 22; un arbre de réduction de vitesse 27 disposé au-dessous de l'arbre de transmission intermédiaire 22, et sur lequel se cale un pignon de grand diamètre 28; un arbre à pignon conique 34; un appareil de changement de vitesse auxiliaire C; et un différentiel D associé à l'arbre à pignon conique 34. c. L'invention s'applique aux tracteurs agricoles.
Patent FR-2477011-A1 (FR)
Title: First-aid carrying stretcher - has lower struts forming skids for frame tilted to receive patient
IPC: A61G7/10
Filed: 1980-02-29
Abstract: The first-aid stretcher allows a patient to be picked up from the ground or a bed without lifting, by tilting him progressively onto it. It comprises a frame formed by lengthwise and transverse (3) beams combined with lower struts (6). The latter act as skids at a lower level than the remainder of the frame. One arm of each of the skids can have a straight extension (12) beyond the frame, bent over at the end (13) to form a pick-up scoop and ramp, down which the patient slides onto the supporting surface of the stretcher.
Patent FR-2456687-A1 (FR)
Title: Dispositif de transport destine a delivrer des colis individuels a d'autres transporteurs
Inventor: HOLZHAEUSER DIETER
IPC: B65G47/10
Filed: 1980-03-07
Abstract: L'INVENTION CONCERNE UN DISPOSITIF DE TRANSPORT DESTINE A DELIVRER DES OBJETS OU COLIS INDIVIDUELS A UN AUTRE TRANSPORTEUR. DANS LEDIT DISPOSITIF, UN DISPOSITIF D'ENTRAINEMENT 14 NE MODIFIE LA VITESSE DE DEFILEMENT DU DISPOSITIF DE CHARGEMENT 6 QU'EN LA REGLANT DE TELLE SORTE QUE L'ACCELERATION QUI EN RESULTE NE PROVOQUE NI GLISSEMENT, NI BASCULEMENT DU COLIS INDIVIDUEL 9 DISPOSE SUR LEDIT DISPOSITIF DE CHARGEMENT 6. APPLICATION AUX TRANSPORTEURS, NOTAMMENT CONTINUS.
Patent FR-2477919-A1 (FR)
Title: Joining metal sheet to profiles - where sheet is provided with projections, and is then pushed through longitudinal slot in profile
IPC: B23P11/00
Filed: 1980-03-13
Abstract: The profile is provided with a longitudinal slot, in which the end of a metal sheet is inserted. A row of projections is pref. pressed into the sheet near its edge, so that once the projections have been pushed through the slot in the profile, the sheet cannot fall out of the slot. The projections pref. have a height slightly larger than the width of the slot. As an alternative, the projections on the metal sheet may enter a row of holes in one leg of a U-profile; and/or a threaded rod may be welded to the sheet and used with a nut to anchor the sheet to a profile. Used in the mfr. of self-supporting structures which include thin sheets of relatively low strength so they are easily distorted. The edge of the metal sheet is stiffened, while being anchored in a profile.
Patent FR-2452479-A1 (FR)
Title: Esters d'amide salicylique presentant une activite therapeutique, leur procede de preparation et composition pharmaceutique rattachee
IPC: C07D213/80
Filed: 1980-03-26
Abstract: ESTERS D'AMIDE SALICYLIQUE PRESENTANT LA FORMULE GENERALE SUIVANTE: (CF DESSIN DANS BOPI) DANS LAQUELLE R EST UN RADICAL D'UN ACIDE CHOISI PARMI LES ACIDES D-2-(6-METHOXY-2-NAPHTYL)-PROPIONIQUE, NIFLUMIQUE, 2-3-TRIFLUOROMETHYL)-PHENYL-AMINO -3-PYRIDINO-CARBOXYLIQUES, 2-(4-ISOBUTYL-PHENYL)-PROPIONIQUE, 4-ALLYLOXY-3-CHLORO-PHENYL-ACETIQUE, 2-(3-BENZOYLPHENYL)-PROPIONIQUE, MEFENAMIQUE ET FLUFENAMIQUE. ON AJOUTE LENTEMENT LE CHLORURE DE L'ACIDE DESIRE A UNE SOLUTION DE L'AMIDE SALICYLIQUE ET L'ON CHAUFFE LE MELANGE REACTIONNEL A LA TEMPERATURE DESIREE, L'ESTER RESULTANT DE LA REACTION ETANT ALORS ISOLE ET PURIFIE. APPLICATIONS: TRAITEMENT DE LA MUQUEUSE GASTRIQUE.
Patent FR-2479229-A1 (FR)
Inventor: LABEEUW BERNARD
IPC: C07D501/36
Filed: 1980-03-26
Abstract: The invention relates to derivatives of the family of cephalosporins, to a process for preparation thereof and to the therapeutic application thereof. The compounds of the invention correspond to formula: (I) in which: is an acid, an alkaline or alkaline-earth salt, an amine salt or an ester; R3 is furyl or thienyl.
Patent FR-2480466-A1 (FR)
Inventor: GAUTIER PHILIPPE
IPC: G08B25/00
Filed: 1980-04-11
Abstract: 1. A box for protecting an alarm or security device, comprising a support (1) for the alarm device (7) in the form of a rectangular plate (1) disposed vertically and, for the protection of this device, a cover (13, 23) which is pivotally mounted on the support and is normally retained, relative to the latter, in a closed position by means of a shear pin (16, 20) but which may be opened after the breakage, by a manual action, of said pin, by pivoting about a pivot axis which is constituted by two pins (14) provided at the lower end of the cover, characterised in that the cover (13, 23) whose pins (14) are engaged in corresponding slideways (4, 5) formed on the respective vertical edges of the support (1), is retained in the closed position adjacent the upper end by insertion of its upper end edge in a formed-over ledge (6) of the support, and, adjacent the lower end, by the shear pin (16, 20) which is connected to the support and whose breakage under the effect of an impact in the downward direction on the cover causes the downward sliding of the two pins (14) and a corresponding disengagement of the upper edge of the cover out of the ledge (6), so that the cover can then be opened by pivoting it about the two pins.
Patent FR-2454880-A1 (FR)
Title: Rasoir
Inventor: HOEKSTRA ALBERT
IPC: B26B19/38
Filed: 1980-04-25
Abstract: RASOIR COMPORTANT UN PEIGNE A OUVERTURES D'ENTREE DES POILS AINSI QU'UN ORGANE DE COUPE POUVANT ETRE MIS EN ROTATION PAR RAPPORT AU PEIGNE ET COUPLE, A L'AIDE D'UN ARBRE DE COUPLAGE, A UN MECANISME D'ENTRAINEMENT; LEDIT APPAREIL COMPORTANT AUSSI UN COMPARTIMENT DANS LEQUEL S'ACCUMULENT LES POILS DECOUPES. CE GENRE DE RASOIR PRESENTE L'INCONVENIENT QUE GENERALEMENT, LES POILS DECOUPES SE TROUVENT DANS LE MEME ESPACE QUE LES ORGANES DE COUPE ET SONT A MEME DE PERTURBER LE FONCTIONNEMENT CONVENABLE DE CEUX-CI. DE PLUS, LES POILS PEUVENT SORTIR DU RASOIR PAR LES OUVERTURES DU PEIGNE. CES INCONVENIENTS SONT ELIMINES DANS LE RASOIR CONFORME A L'INVENTION DU FAIT QU'UNE CLOISON ETABLIT UNE SEPARATION ENTRE L'ORGANE DE COUPE ET LE COMPARTIMENT DE POIL ET COMPORTE UNE OUVERTURE POUR L'ARBRE DE COUPLAGE, ALORS QUE L'ORGANE DE COUPE EST MUNI D'UN ORGANE SITUE AUTOUR DUDIT ARBRE ET OBTURANT LADITE OUVERTURE. APPLICATION: RASOIRS A SEC A TETES FLOTTANTES.
Patent FR-2455505-A1 (FR)
Title: Preforme pour videodisque et procede pour en former un disque
Inventor: MICHAEL LEE MCNEELY
IPC: B29B11/14
Filed: 1980-04-29
Abstract: L'INVENTION CONCERNE UNE PREFORME POUR FORMER UN DISQUE ENREGISTRE COMPRENANT UN CORPS EN MATIERE PLASTIQUE AYANT DES SURFACES SUPERIEURE ET INFERIEURE ET UNE SURFACE PERIPHERIQUE ENTRE ELLES. SELON L'INVENTION, LA SURFACE PERIPHERIQUE 16 A UNE PREMIERE PARTIE 18 D'UNE DIMENSION PERIPHERIQUE PLUS GRANDE QUE CELLES DES SURFACES SUPERIEURE ET INFERIEURE 12 ET 14, ET DES SECONDE ET TROISIEME PARTIES 20 ET 22 S'ETENDANT DE LA PARTIE 18 AUX SURFACES 12 ET 14, RESPECTIVEMENT, QUI ONT CHACUNE UNE DIMENSION PERIPHERIQUE QUI DIMINUE DE CELLE DE LA PARTIE 18 A CELLES DES SURFACES 12 ET 14, RESPECTIVEMENT. L'INVENTION S'APPLIQUE NOTAMMENT AU MOULAGE DES VIDEODISQUES.
Patent FR-2485978-A1 (FR)
Title: Organe de prehension a capteurs optiques et appareil en faisant application
Inventor: AMBERNY PHILIPPE
IPC: B25J19/02
Filed: 1980-07-04
Abstract: L'ORGANE DE PREHENSION A CAPTEURS OPTIQUES COMPREND UN CORPS RIGIDE 11, UN ELEMENT DE CONTACT 12 PORTE PAR LE CORPS PAR L'INTERMEDIAIRE DE MOYENS ELASTIQUES 13 ET DEFINISSANT AVEC LUI UN ESPACE CLOS 30 ET AU MOINS UN CAPTEUR OPTIQUE PORTE PAR LE CORPS. LE CAPTEUR COOPERE A TRAVERS L'ESPACE 30 AVEC L'ELEMENT DE CONTACT POUR DETECTER LES DEPLACEMENTS DE L'ELEMENT DE CONTACT DANS UNE DIRECTION AU MOINS.
Patent FR-2488414-A1 (FR)
Title: Periscope de sous-marin
Inventor: RAGAIN JACQUES
IPC: G02B23/16
Filed: 1980-08-06
Abstract: LA PRESENTE INVENTION SE RAPPORTE A UN PERISCOPE DE SOUS-MARIN POUVANT ETRE UTILISE COMME PERISCOPE DE VEILLE OU D'ATTAQUE. LE PERISCOPE SELON L'INVENTION COMPORTE UNE TETE D'OBSERVATION MONTEE AU SOMMET D'UN TUBE EQUIPE D'UNE OPTIQUE ET GUIDE VERTICALEMENT DANS DES PALIERS SITUES AU-DESSUS DE LA COQUE EPAISSE ET EQUIPE A SA PARTIE INFERIEURE D'UNE PIECE DE SUSPENSION DANS LAQUELLE IL PEUT PIVOTER AUTOUR DE SON AXE, SOUS L'ACTION D'UN MOTEUR, PAR L'INTERMEDIAIRE DE LAQUELLE IL PEUT ETRE HISSE OU ABAISSE VERTICALEMENT DANS UN SAS SOLIDAIRE DE LA COQUE EPAISSE ET UN BLOC D'OBSERVATION FIXE POURVU D'UN OCULAIRE RECEVANT LE FAISCEAU A LA SORTIE DU TUBE AU TRAVERS D'UN HUBLOT ET IL EST ESSENTIELLEMENT CARACTERISE PAR LE FAIT QU'IL COMPORTE UN VERIN 6 MONTE ENTRE LA PIECE DE SUSPENSION 5 ET UN APPUI SITUE A L'INTERIEUR DE LA COQUE EPAISSE 11 A UN NIVEAU INFERIEUR A CETTE PIECE DE SUSPENSION 5 QUI S'APPUIE SUR LA TIGE 61 DUDIT VERIN.
Patent FR-2490856-A1 (FR)
Title: Noise reduction filter for audio or video reproduction - uses number of programmable filters containing adjustable gain amplifier controlling limiter compressor
Inventor: IMREH MIKLOS
IPC: H03G5/18
Filed: 1980-09-22
Abstract: A number of programmable filters each working over a part of the total bandwidth are used in the noise reduction system. Each filter comprises an input stage containing a signal amplitude control potentiometer (Pe) followed by an impedance matching amplifier (AE) which drives a filter circuit (FB). The filter output is applied to a limiter compressor (LC) controlled by an adjustable qain amplifier (AG) followed by a detector with a time constant (DCT). This detector is specific to each filter and its frequency characteristics. The filter and compressor outputs are passed to a summer (S) to produce an output (Vs) which depends on the gain of the adjustable gain amplifier and thus the programming of the limiter compressor.
Patent FR-2492994-A1 (FR)
Title: Spectacle frame assembled from two rigid mouldings - to secure plastic or glass lenses
Inventor: ANSELME LOUIS
IPC: G02C1/08
Filed: 1980-10-28
Abstract: A spectacle frame is assembled from two rigid mouldings where one forming the bridge and the top of each eyepiece has a central trapezoidal recess which accepts an undercut head at the centre of the second moulding which is shaped to support the underneath of each eyepiece. The ends of each moulding partly overlap and are joined by pins which also act as pivots for the sidearms. Suitable for mounting plastic or ceramic lenses without risk of loss due to flexing of the frame. Pref. the upper edge of the recess has an internal step to locate a corresp. lip on the tenon of the lower moulding. The recess may be open, and expose part of the tenon as a feature of the frame bridge.
Patent FR-2493383-A1 (FR)
Title: Alignment frame for carpentry - comprises two vertical and at least one horizontal telescopic tube to support building partitions
IPC: E04G21/18
Filed: 1980-11-06
Abstract: The alignment frame for the construction of wooden partitions comprises two vertical telescopic tubes (1) and at least one similar horizontal telescopic tube. Each vertical tube is made up of a polygonal tube (2) and an interior slide (3) and incorporates a lock (17) which allows the slide (3) to move either continuously or step by step in the tube (2). The horizontal tube is universally jointed to stirrups which slide over the outer surface of the vertical tubes (1). The lock (17) comprises two spring-biassed flaps which bear against the inner surface of the tube (2).
Patent FR-2470852-A1 (FR)
Title: Plate for mine roof support bolt - is rectangular with raised centre for bolt hole and seating face
Inventor: ARYA SATYA PRAKASH
IPC: E21D21/00
Filed: 1980-11-27
Abstract: The mine roof support plate (10) is used with a bolt in the ground with a load of over 1430 kg. It is made from a rigid rectangle (12) with a raised central part (16) relative to the edges (14). The centre has a base (18) with a central hole (20). The base in rectangular with rounded angular edges. The plate is of equal thickness throughout, between 4.2. and 3.4mm. The hole is circular and the base is raised from the rest of the plate by about 25.4mm. The base has a flat bearing surface (20) around the hole and is at least 3.8mm wide.
Patent FR-2475423-A1 (FR)
Title: Structure de joint rotatif
Inventor: BRUNEEL ROBERT
IPC: B04B5/00
Filed: 1980-12-19
Abstract: JOINT POUR DISPOSITIF DE CENTRIFUGATION DONT UNE PARTIE FIXE 1 ET UNE PARTIE ROTATIVE 2 SONT DISPOSEES COAXIALEMENT, LADITE PARTIE FIXE 1 COMPRENANT UNE PLURALITE DE CONDUITS 3, 6 DONT L'UNE DES EXTREMITES EST EN COMMUNICATION PERMANENTE AVEC UNE PLURALITE DE PASSAGES 12A-15A PREVUS DANS LA PARTIE ROTATIVE DU JOINT. APPLICATIONS : CENTRIFUGEUSES POUR LE TRAITEMENT DE FLUIDES.
Patent FR-2473548-A1 (FR)
Title: Procede d'entretien de l'activite et de l'adaptation biologiques de la biocenose dans une installation d'epuration humide et biologique d'air rejete pendant des periodes d'arret de fonctionnement
Inventor: KOHLER HERBERT
IPC: C02F3/04
Filed: 1981-01-08
Abstract: Agissant par la fourniture d'une solution nutritive, ce procédé consiste essentiellement à faire subir un prélavage à l'air rejeté et à fournir à la biocénose pendant les périodes d'arrêt de fonctionnement, le liquide de prélavage conservé, enrichi par les matières contenues dans l'air. En outre, on peut fournir à la biocénose le liquide de prélavage après en avoir séparé les particules de poussière dispersées.