baber/WOPTO huggingface dataset:
Patent CH-604537-A5 (CH)
Title: Mechanical cleaner for tripe, esp. large pig stomachs
Inventor: KOCH JOSEF
IPC: A22C17/08
Filed: 1976-04-26
Abstract: The parent patent describes a vessel for cleaning tripe mechanically which is cylindrical with a feed for washing water and a sieve-form bottom through which the water runs away.  The inner wall of the vessel is trimmed (in part) with inwardly projecting britles, and the agitating tool is a disk with upwards projecting bristles.      The wall of the vessel is (partially) trimmed with bristles and these are interrupted along the circumference by at least one segment with a curved, smooth concave surface, in which the tripe is rotated by the bristle-mounted disk.      The original machine which is excellent for cleaning small tripes and pieces of these, is modified so that large tripes and large pieces can be cleaned in an irreproachable manner by ensuring adequate rotation for them.
Patent CH-617067-A5 (CH)
Title: Insecticide containing a 5-phenylcarbamoylbarbituric acid as active ingredient
Inventor: BERIGER ERNST DR
IPC: C07D239/62
Filed: 1976-05-06
Abstract: Insecticide containing, as active ingredient, a compound of the formula I <IMAGE> in which R1 represents methyl or ethyl, R2 represents methyl, ethyl, n-propyl, i-propyl or allyl and R3 represents phenyl which is monosubstituted or disubstituted by halogen, methyl or trifluoromethyl.
Patent CH-662778-A5 (CH)
Inventor: GALE GEORGE MARTIN
IPC: B29C48/03
Filed: 1982-03-15
Abstract: An extruder mixer comprising a hollow cylindrical stator (14) having a cylindrical rotor (10) journalled therewithin, the facing cylindrical surfaces of the rotor and stator carrying respective pluralities of parallel circumferentially extending rows of hemispherical cavities (18, 20). In order to achieve an exponential mixing characteristic in which simple shear mixing is repeatedly interrupted by cutting and turning stages, the rotor and stator cavities (18, 20) are arranged such that (a) the cavities (20) in adjacent rows on the stator are circumferentially offset, (b) the cavities (18) in adjacent rows on the rotor are circumferentially offset, and (c) the rows of cavities (18, 20) on the stator and rotor are axially offset.
Patent CH-595330-A5 (CH)
Title: Alpha,- beta- unsatd nitriles from ketone and acetonitrile
Inventor: SIMONE ROBERT DE
IPC: C11D3/50
Filed: 1975-06-03
Abstract: Alpha,- beta- unsatd nitriles from ketone and acetonitrile with strong basic catalyst, partic for acyclic nitriles for use in perfume compsns
Patent CH-643454-A5 (CH)
Inventor: USCIO HEINZ V D
IPC: A61C13/263
Filed: 1978-08-15
Abstract: Dental screw for anchoring fillings, reconstitutions and prosthesis of any kind. It is characterized in that dental screw is made up of several parts and in that these different parts may be interconnected by the friction produced by the fixing means. According to this principle, dental screws of several parts transmit the high pressure of mastication on the largest possible length of the dental root and on the jaw-bone which surrounds it rather than on the upper part of this jaw-bone only. This possibility may also be applied to very long roots or to curved roots as well as to teeth of one or more roots. Hence, the danger of overload on the upper part of the root canal and consequently of slits and cracks is considerably lessened. Further, the anchoring of the dental screw may be extended, if necessary, up to the peak of the root, allowing the setting of reconstitutions or prosthesis even in the cases where, due to damages or fractures of the natural dental material, such as setting would not be possible or when an improvement could only be achieved through an extraction.
Patent CH-618239-A5 (CH)
Title: Rotary and axial guidance element
Inventor: BOREL DENIS
IPC: F16C29/06
Filed: 1977-07-14
Abstract: The element comprises a tubular outer sleeve (1) and annular stops (6) arranged at the ends of the sleeve (1) and limiting an axial displacement of an inner tubular cage (4) filled with balls (2) and positioning the sleeve (1) with respect to a shaft (5) supporting the element. Balls (2) in chosen number are placed in the grooves (3) of the cage (4), each groove being of a length corresponding to at least half the distance separating the two annular stops (6) of the sleeve (1). <IMAGE>
Patent CH-571188-A5 (CH)
Title: Hollow structure for multiple purposes - securable together by fastening elements at their edge portions
IPC: E04B1/348
Filed: 1972-09-05
Abstract: The hollow structures are essentially cubic and are intended for a variety of purposes, e.g. transport containers, furniture or toys. In one example six generally cruciform components (10) are arranged at the six sides of a cube. Each component is shaped at the ends of its four limbs, to inter-engage with the corresponding limb ends of the four adjacent components of the cubic arrangement. The inter-engagement may be as by tongue and groove or by hinge pins. the sides of the cube may be made up of several bar or plate-like elements. To improve the versatility of the system mating projections and recesses can be varied in height and depth respectively and the thickness of the components can also be varied.
Patent CH-584018-A5 (CH)
Title: Box section shelves for cupboards - have sheet surfaces with reinforcing ribs made from laminated hardboard strips
IPC: B27D1/04
Filed: 1974-10-25
Abstract: The box-section elements (1) can be used to form the floors, shelves or tops of cupboards. The element (1) consists of an upper and lower (2, 3) of hardboard, plywood or lightweight metal. These sheets are glued to longitudinal beams (4, 6). Transverse beams are glued along the ends of the sheets (2, 3). The beams (4, 6) are built from strips of hardboard glued together. The strips are cut from scrap material produced as off-cuts from large sheets of hardboard. A machine continuously produces these beams. The process is a very cheap way of producing light but strong shelves, floors, etc for cupboards.
Patent CH-605745-A5 (CH)
Title: Indole deriv. prepn.
Inventor: CHRISTENSEN SVEND AGE
IPC: A61K31/40
Filed: 1976-12-09
Abstract: Indole deriv. prepn. by reductive ring closure of (ortho)-nitrobenzyl cyanide deriv. (SW 4.7.77)
Patent CH-606089-A5 (CH)
Title: 3'-(3-oxo-17-beta-hydroxy-6,7-methylene-androst-(or
Inventor: ARTH GLEN EDWARD
IPC: C07J53/00
Filed: 1972-12-29
Abstract: 3'-(3-oxo-17-beta-hydroxy-6,7-methylene-androst-(or (19-nor-androst)4-ene-17 alpha-yl)-propionic acids as aldosterone
Patent FR-2086752-A5 (FR)
Title: Enzymatic isomerisation of glucosesyrups in the presence of
IPC: C12P19/24
Filed: 1970-04-08
Granted: 1971-12-31
Abstract: A glucose-isomerising enzyme is added to a glucose-contg. liquid and the liquid is subjected to isomerisation conditions. During isomerisation a small amount of a water-soluble salt of sulphurous acid is present in a quantity which is sufficient to reduce visibly the formation of colour produced in the absence of salt. The quantity of salt is pref. sufficient to produce 0.02-0.3% SO2 in the liquid. Pref. salt is Mg sulphite or -bisulphite. The pref. micro-organisms used to produce the enzyme are Streptomyces ATCC 21175 and 21176. Pref. pH of the liquid during isomerisation is 6.5-7.5. Cell material containing the enzyme is used for isomerisation. This contains foreign matter which produces discolouration of the final product. The salts included reduce the colour and have a protecting effect on the glucose-isomerising enzyme, esp. at higher temps. so that smaller quantities of enzyme are necessary to give the same yield of fructose. The isomerised glucose syrup is used for the sweetening of sauces, tinned fruits, confectionery etc.
Patent FR-2053921-A5 (FR)
Title: Ice granules prodn
IPC: A23F5/32
Filed: 1970-06-09
Granted: 1971-04-16
Abstract: Granulated ice for freeze drying installations is produced in equipment with a granulating device with two rollers in contact with each other. One is a unilaterally open hollow roller with connecting channels in the cylinder surface which is in the vacuum chamber. The granulating device is connected with a pipe to the storage reservoir containing precooled raw material.
Patent FR-2098583-A5 (FR)
Title: Phenylacetic acid prepn - by oxidising phenylacetaldehyde with oxygen and transition metal eg cobaltous acetate catalyst
IPC: C07C51/255
Filed: 1970-07-21
Granted: 1972-03-10
Abstract: Phenylacetic acid is prepd. by oxidising phenylacetaldehyde with oxygen in the presence of a catalyst consisting of a transition metal optionally associated with a derivative of a group IIIa or IVa metal, a lanthanide or actinide. Phenylacetic acid is an intermediate for penicillin prepn., phenylacetone prepn., and prepn. of esters for use in perfumes.
Patent FR-2127171-A5 (FR)
Title: Electrostatic powder deposition - on a continuously advancing substrate
IPC: B05B7/14
Filed: 1971-02-26
Granted: 1972-10-13
Abstract: Appts for the application of powders, partic. electrostatically, on plane surfaces, esp. continuously advancing strips, of the known type provided with projection nozzles connected to a high tension source and to a powder feed, is modified so that the powder feeder consists of >=1 vessel contg. a fluidised bed of powder maintained at constant level and arranged horizontally close to the surface to be coated, delivery outlets being provided along the vessel in the centre of the powder bed on a line parallel to the level of the bed and at intervals selected in accordance with the deposition characteristics of the projection nozzles while each delivery outlet comprises a Venturi-type injector connected to a compressed air feed as well as to a pipe connecting its outlet to the projection nozzles.
Patent FR-2127294-A5 (FR)
Title: Waste heater boiler - using furnace gases from roasting smelting sulphide ores
IPC: F22B1/18
Filed: 1971-03-03
Granted: 1972-10-13
Abstract: The boiler comprises a radiation chamber screened by natural circulation wall evaporation bulkheads consisting of rows of evaporation tubes fitted into collectors, and a clarifying pipe. Behind the radiation chamber is a convection-radiation chamber with evaporator and air-pre-heating bulkheads for the cooling of the furnace gases which generate steam which is superheated in the steam superheater for the steam barrel, followingw hich they are conducted away through holes in the front wall of the boiler. Some of the tubes of the evaporator bulkheads consist of two coaxial tubes the inner of which is connected with the water contg and the outer with the steam contg. portion of the steam barrel above the boiler roof. The clarifying tubes also consist of coaxial tubes and the rear boiler wall has at least one vertical row of holes for the cooled gases with individual control flaps. Cools the corrosive, dust laden gases prior to electrofiltration and recovery of sulphuric acid.
Patent FR-2127395-A5 (FR)
Title: Pvc based flooring compsn - using aminophenol hydrochloride benzoic acid hexamethylenetramine and stearic acid as plasticisers
IPC: C08K5/00
Filed: 1971-03-05
Granted: 1972-10-13
Abstract: Cheap floor covering with a lower density, higher wear resistance, reduced moisture uptake, better resistance to frost than known compsns., no contraction on heating to 80 degrees C and good elasticity despite high filler contents is obtd., by using a mixt consisting of (%wt) 13-22 PVC, 14-17 butadiene/acrylonitrile copolymer, 50-57 oil shale, 8-14 other aids and as plasticiser 0.1-0.5 aminophenol HCl, 0.2-1.2 benzoic acid, 0.1-0.5 hexamethylenetetramine and 0.15-0.6 stearic acid.
Patent FR-2090548-A5 (FR)
Title: Acceleration of life processes of microorganisms by - short pressure changes
IPC: C12N1/00
Filed: 1971-04-22
Granted: 1972-01-14
Abstract: Life processes such as metabolism, multiplication or biosynthesis of microorganisms in a fluid, esp. a liquid substrate containing nutrients and other substances, are accelerated by subjecting a suspension of the micro-organism in the substrate to one or more pressure-changes of short duration, most pref. in a pressure range of 20-0.3 kg/cm2. The process may be used for accelerating life processes of microorganisms such as bakers yeast, brewers yeast and yeast cells for protein production on hydrocarbon substrates etc. It may also be used in applications where a directed material transport or exchange through cell-membranes is desirable such as the removal of unpleasant taste in fats and proteins cultured on straight alkanes etc. The process causes increased transport of nutrients and decomposition products through cell walls and membranes and can increase growth rate by 100% and/or shorten fermentations considerably. The process exerts a relatively high pressure at least once on a steady stream of suspension, strongly reduces the pressure suddenly, followed by immediately increased pressure. Nutrients, gases etc. may be added or removed during pressure changes. A pref. process uses a pressure pump and a Venturi or ejector mouthpiece, which subject the suspension at excess pressure to a sudden pressure fall of very short duration.
Patent FR-2099358-A5 (FR)
Title: Extinction of light metal fires - by liquid mixt of bromofluoroalkane and tricresyl phosphate (tcp)
IPC: A62D1/00
Filed: 1971-07-28
Granted: 1972-03-10
Abstract: Fires caused by the burning of light metals such as Al, Mg and their alloys are extinguished by application of a liquid compsn. comprising a mixt. of a bromofluoroalkane boiling 100 degrees C and an aromatic ester of phosphoric acid. Prefd. mixt is that of dibromo-1,2-tetrafluoro-1,1,2,2-ethane and TCP in a weight ratio of 1:2 to 2:1, pref. 1:1. This liquid compsn. is very efficient at rapidly extinguishing fires by burning light metals.
Patent FR-2205042-A5 (FR)
Title: Oven bake plastic food packs - with microperforations to vent the pack without loss of liquid
IPC: B65D81/34
Filed: 1972-10-27
Granted: 1974-05-24
Abstract: Plastic packs for containing food portions for oven baking, have microperforations =500 mu dia. on part of the pack. Pref. the packs are made of cellulosic, polyamide, polyester or other films which are transparent to thermal radiation and which have a m.pt. >250 degrees C. Packs may be composite, with non perforated rigid support or tray sealed to a porous cover film. Bursting of the pack when the internal gases are heated up in the oven is prevented. The pack obviates need to remove or puncture the pack and expose the food prior to coating.
Patent FR-2235607-A5 (FR)
Title: Rotary engine using simple parts - has pair of rectangular section piston rotating in cylindrical stator
IPC: F01C1/36
Filed: 1973-06-26
Granted: 1975-01-24
Abstract: The engine consists of a stator and a rotor with two cylindrical grooves to take two pistons (3) and (4). The pistons are rectangular in section. They are geared to the rotor in such a way as to remain horizontal during the rotation of the engine. In a 4-stroke cycle, air is admitted at ADM and Fuel is injected at I. When the piston (3) is at top dead centre, PMH, it is still horizontal. At this point the gases are compressed between the piston and the stator. The power stroke takes place over the next quarter revolution and the gases are expelled at ECH. With circular sections throughout and no generated curves, manufacturing costs are reduced.
Patent DD-154522-A5 (DD)
Title: Herbicide zusammensetzungen
Inventor: LAVANISH JEROME M
IPC: C07D285/12
Filed: 1980-08-07
Abstract: Die Erfindung betrifft neue herbizide Zusammensetzungen auf Basis von Imidazolidinon-Derivaten. Es ist Ziel der Erfindung, den Stand der Technik durch neue Herbizide mit breitem Spektrum in Nutzpflanzenkulturen zu bereichern. Erfindungsgemaess bereitgestellt werden 3-(5-(1-(Alkoxy- oder Alkylthio) alkyl-, alkinyl-, alkenyl- oder halogenalkyl)-1,3,4-thiadiazol-2-yl)-4-hydroxy-1-methyl-2-imidazolidinone der allgemeinen Formel mit X = O oder S, R = C tief 1 - C tief 4- Alkyl, C tief 2- C tief 3-Alkenyl, C tief 2- C tief 3-Alkinyl, Halogenalkyl, R' = C tief 1- C tief 4- Alkyl. Die neuen Herbizide werden in ueblichen Formulierungen eingesetzt.
Patent DD-153693-A5 (DD)
Title: Verfahren zur herstellung von peptidergotaloidem
Inventor: PRAEFFLI PAUL
IPC: C07D519/02
Filed: 1980-10-24
Abstract: Die Erfindung betrifft auf der Amidbruecke zwischen dem Peptidteil und dem Lysergsaeurederivatrest durch einen linearen aliphatischen Kohlenwasserstoffrest substituierte Peptidergotalkaloide sowie ihre Herstellung durch Kondensation eines Saeureadditionssalzes eines entsprechend N- substituierten Aminocyclols mit einem entsprechenden reaktiven Lysergsaeurederivat oder Reduktion eines entsprechenden, in 9,10-Stellung ungesaettigten Peptidergotalkaloids, wobei die in 9,10-Stellung gesaettigten Verbindung erhalten werden. Die Verbindung der Erfindung koennen als Arzneimittel fuer die Indikation Zerebralinsuffizienz verwendet werden.
Patent DD-208978-A5 (DD)
Title: Verfahren zur herstellung von 3-picolin
Inventor: DINKEL ROLF
IPC: C07D213/10
Filed: 1982-01-07
Abstract: Verfahren zur Herstellung von 3-Picolin aus Acetaldehyd und/oder Acetaldehydacetalen und/oder Crotonaldehyd einerseits und Formaldehyd und/oder Formaldehydacetalen und/oder Hexamethylentetramin andererseits in der fluessigen Phase.
Patent DD-210708-A5 (DD)
Title: Verfahren zur herstellung permanenter tierischer und humaner zellinien
Inventor: JUNGFER HERBERT
IPC: C12N15/00
Filed: 1983-05-02
Abstract: In dem erfindungsgemaessen Verfahren zur Gewinnung von permanent zuechtbaren Zellinien von tierischen und menschlichen Zellen durch Fusion von normalen tierischen oder menschlichen Zellen mit biologischen Komponenten, welche eine Zuechtungsfaehigkeit in vitro bewirken, fusioniert man normale tierische oder menschliche Zellen mit allein nicht vermehrungsfaehigen Zellfragmenten transformierter Zellen und zuechtet sie in einem Kulturmedium ohne Selektionssubstanzen. So gewonnene permanent zuechtbare Zellinien eignen sich vor allem zur Gewinnung von Zellprodukten und zur Pruefung von Wirksubstanzen.
Patent DD-212640-A5 (DD)
Title: Lockstoffpraeparat zum selektiven anlocken von maennlichen gammaeulen
Inventor: SZANTAY CSABA
IPC: A01N37/02
Filed: 1983-08-10
Abstract: Die Erfindung betrifft ein Lockstoffpraeparat zum selektiven Anlocken von maennlichen Gammaeulen (Autographa gamma). Ziel der Erfindung ist die Bereitstellung eines neuartigen Praeparates mit verstaerkter Wirksamkeit. Erfindungsgemaess enthaelt das neue Praeparat als Wirkstoff eine Mischung von 90 BIS 99,8 Gew.-% 7 (Z)-Dodecen-1-ol-acetat und 10 bis 0,2 Gew.-% 7 (Z)-Dodecen-1-ol, gegebenenfalls zusammen mit fluessigen und/oder festen Verduennungsmitteln und/oder anderen Hilfsstoffen. Das erfindungsgemaesse Praeparat uebt eine synergistische Wirkung aus.
Patent DD-210898-A5 (DD)
Title: Verfahren zur herstellung von trifluoracetylchlorid
Inventor: CHEMINAL BERNARD
IPC: C07C67/00
Filed: 1983-11-02
Abstract: Die Erfindung betrifft ein Verfahren zur Herstellung von Trifluoracetaldehyd durch katalytische Chlorierung von Trifluoracetaldehyds mit Chlor. Der Katalysator ist eine Aktivkohle und die Katalyse erfolgt in der Gasphase, im Fest- oder Fliessbett, gegebenenfalls in Anwesenheit von Chlorwasserstoff und/oder eines inerten Verduennungsmittels.
Patent DD-224556-A5 (DD)
Title: Vorrichtung zum kontinuierlichen einspeisen (eintakten) von im wesentlichen flachen warenstuecken der genuss- oder lebensmittelbranche, insbesondere schokoladentafeln oder -riegel, in eine packmaschine
Inventor: LESCH HANS
IPC: B65B/
Filed: 1985-01-04
Abstract: Bei der Erfindung handelt es sich um eine Vorrichtung zum kontinuierlichen Einspeisen (Eintakten) von im wesentlichen flachen Warenstuecken der Genuss- oder Lebensmittelbranche, insbesondere Schokoladetafeln oder -riegel, in eine Packmaschine, in der die Warenstuecke durch Mitnehmer einer Transportvorrichtung in einen Huellmaterialschlauch eingebracht und mit diesem in einzelne Packstuecke verformt werden, wobei erfindungsgemaess dem in konstanter Geschwindigkeit laufenden mit Mitnehmern (3) besetzten Transportorgan (3 a) ein im gleichen Arbeitstakt quer dazu arbeitender Zubringer (25) fuer die Warenstuecke (1) vorgeschaltet ist und zwischen den Mitnehmern (3) derart gesteuerte Puffer (30) fuer die auf dem Zubringer (25) ankommenden Warenstuecken (1) vorgesehen sind, dass diese nacheinander in einer sich aus Zubringerrichtung und Transportrichtung resultierenden Richtung in den Huellmaterialschlauch (5) einlaufen. Fig. 2
Patent DD-290185-A5 (DD)
Title: Verfahren zur herstellung von (z)-amidinohydrazonen 2-amino substituierter benzophenone
Inventor: RICHTER PETER
IPC: C07C281/18
Filed: 1986-12-30
Abstract: Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von * 2-aminosubstituierter Benzophenone der allgemeinen Formel I aus dem bei der Kondensation von 2-aminosubstituierten Benzophenonen mit Aminoguanidinsalzen anfallenden * bzw. der reinen * Das Ziel und die Aufgabe der Erfindung bestehen darin, sterisch einheitliche * 2-aminosubstituierter Benzophenone mit antiarrhythmischer und antiischaemischer Wirkung sowie groszer therapeutischer Breite und langer Wirkdauer zu entwickeln. Diese Aufgabe wurde dadurch geloest, dasz die entsprechenden * in einem inerten Loesungsmittel mit Acetanhydrid umgesetzt und die entstandenen Acetylderivate hydrolysiert wurden oder die * in einem aprotischen Loesungsmittel mit starken Saeuren erhitzt wurden. Formel I: AH, Halogen, OH, OAlkyl, NO2, BH, Halogen, R und RH, Phenyl, substituiertes Phenyl sowie MX eine pharmazeutisch geeignete und physiologisch akzeptable anorganische bzw. organische Saeure bedeuten. Formel I{Herstellung; * Benzophenone; Aminoguanidinsalze; Kondensation; * * Acetanhydrid; Acetylderivate; Hydrolyse; Saeurebehandlung; aprotische Loesungsmittel; antiarrhythmische Wirkung; antiischaemische Wirkung; grosze therapeutische Breite}
Patent DD-263261-A5 (DD)
Title: Verfahren zur herstellung einer ersten fahrzeugradialreifenvorstufe
Inventor: CARPENTIER JEAN M
IPC: B29C48/12
Filed: 1987-05-19
Abstract: Verfahren zur Herstellung einer ersten Reifenvorstufe, welche aus zwei uebereinanderliegenden rohrfoermigen Lagen besteht, von denen die erste, aufgebaut nur aus elastomeren Materialien, aus einer zentralen Innenisolierung, zwei seitlichen Scheuerstreifen und zwei Seitenwaenden gebildet ist und die zweite aus einer Gewebezwischenlage besteht, welche aus einer auf beiden Seiten mit elastomerem Material beschichteten und mittels in radialen Ebenen des Reifens liegender paralleler Textilkorde gewonnenen Textillage gebildet ist, wobei nach dem Verfahren die Gewebezwischenlage aus einem Textilstreifen gewonnen wird, dessen Breite gleich der Umfangsabwicklung einer Reifenwickeltrommel ist und dessen Korde eine axiale Kette bilden, und wobei der Textilstreifen nach seinem beidseitigen Beschichten mit elastomerem Material in Querrichtung in Abschnitte zerschnitten wird, deren Laenge gleich der axialen Abwicklung der ersten Reifenvorstufe ist. Fig. 1
Patent DD-295722-A5 (DD)
Title: Optischer ueberlagerungsempfaenger
Inventor: RENSCHEN CLAUS P
IPC: G02F2/00
Filed: 1987-07-10
Abstract: Die Erfindung betrifft einen optischen UEberlagerungsempfaenger, der von der Temperatur und vom Stromflusz im Laserchip weitestgehend unabhaengig eine hohe Stabilitaet aufweist und dessen Abstimmung traegheitslos mit hoher Selektivitaet erfolgt. Darueber hinaus kann durch eine Regelschaltung in Analogie zur automatischen Frequenzabstimmung - AFC - in gewissem Umfang vom empfangenen optischen Signal unabhaengig eine hohe Langzeitstabilitaet erreicht werden. Der optische UEberlagerungsempfaenger besteht aus einem Koppler, der zwei UEbertragungsstrecken optisch koppelt. UEber eine erste UEbertragungsstrecke ist der signalfuehrende Lichtwellenleiter mit einem optoelektrischen Wandler verbunden. Von einer zweiten UEbertragungsstrecke wird mit einem Phasenschieber und einem optischen Verstaerker ein in Selbsterregung betriebener Rueckkopplungskreis gebildet. Die Abstimmung erfolgt durch Beeinflussung des Phasenschiebers, der gegebenenfalls ueber eine Regelschaltung mit dem optoelektrischen Wandler verbunden ist. Fig. 1{UEberlagerungsempfaenger; Optik; UEbertragungsstrecke; Frequenzabstimmung; Temperatur; Stromflusz; Laserchip; Rueckkopplungskreis; Selbsterregung}