baber/WOPTO huggingface dataset:
Patent EP-0020558-A1 (EP)
Title: Method and device for automatic irrigation.
Inventor: SKAPPEL EINAR
IPC: A01G25/16
Filed: 1980-05-07
Abstract: A main valve (1) is connected into a pressurized water pipe for an irrigation installation and has a valve body (4) formed as a differential piston and with a through bore (5), said body being operated in both directions by means of the water pressure, the piston (4) in one end position closing the water pipe and in its other end position keeping it open. The piston (4) is guided to said end positions by means of a control valve (7) arranged to open or close a duct (6) starting from the major cylinder bore, thereby to cause the water present to actuate the piston (4). The control valve (7) is in turn controlled by rainfall onto, and evaporation from an upwardly open bowl (8), and a drop means (9) active during irrigation. The bowl (8) is part of a tipping means with two tipped end positions, controlled by the quantity of water in the bowl (8). To achieve operation of the main valve (1) such that irrigation substantially takes place at night, and that the length of time between irrigation can be varied, the tipping means is supplemented by a closed air chamber (15) on the other side of the pivoting shaft (35), said chamber and bowl (8) having a common flat bottom (16) and mutual communication via a slit (17) at the bottom. By the volume change in the air enclosed in the air chamber (15), caused by the temperature difference between night and day, the quantity of water contained in the open bowl (8) and in the chamber (15) is displaced at night such that the tipping means tips over into a position opening the main valve (1).
Patent EP-0013900-A1 (EP)
Inventor: KILPPER GERHARD DR
IPC: C07D265/26
Filed: 1980-01-09
Abstract: Verfahren zur kontinuierlichen Herstellung von Isatosäureanhydriden durch zweistufige Umsetzung von phthalamidsaurem und/oder phthalimidsaurem Alkali mit Alkalihypohalogeniten, indem die erste Stufe weitgehend adiabatisch und beide Stufen unter Verwendung hoher Strömungsgeschwindigkeiten durchgeführt werden, wobei zunächst Phthalimid und/oder Phthalamidsäure in einer bestimmten Alkalilaugenmenge gelöst werden, die Lösung mit Hypohalogeniten vermischt und bei bestimmter Temperatur umgesetzt wird, schließlich Säure zugegeben und die Reaktion bei bestimmter Temperatur zu Ende geführt wird. Die nach dem Verfahren der Erfindung herstellbaren Verbindungen sind wertvolle Ausgangsstoffe für die Herstellung von Farbstoffen, Pflanzenschutzmittein und Riechstoffen.
Patent EP-0021165-A1 (EP)
Inventor: CASHWELL ERNEST
IPC: A24C5/60
Filed: 1980-06-04
Abstract: The optical perforation apparatus includes a rotatable assembly (19) having first and second light reflective means (21, 22,- 23, 24) supported in spaced succession for rotation about the assembly rotational axis (25). 
     Each light reflective means is provided with light reflective elements arranged in a locus about the rotational axis. At least one of the means is additionally provided with light transmissive portions each arranged between mutually disposed of its light reflective elements and in alignment with a light reflective element of the other means. 
     The light reflective elements of each means are further arranged at non-orthogonal angles to the assembly axis (25), thereby permitting parallel orientation of the latter axis and the laser beam (27).
Patent EP-0021239-A1 (EP)
Inventor: KRIEGESMANN JOCHEN DR
IPC: C04B35/56
Filed: 1980-06-11
Abstract: The invention relates to dense shaped articles of polycrystalline alpha -silicon carbide containing from 0.1 to 0.4%, by weight, of aluminum and optionally, a small amount of nitrogen and/or phosphorus, having a homogeneous virtually single-phase microstructure. The additional constituents are substantially in the form of a solid solution in the  alpha -SiC lattice. The shaped articles are distinguished by flexural strength of at least 600 N/mm2 up to 1450 DEG  C. and low subcritical crack propagation under mechanical stress. The fracture mechanism is trans granular up to at least 1450 DEG  C. The shaped articles are manufactured by simultaneously shaping and hot pressing pulverulent  alpha -silicon carbide containing a small amount of an aluminum-containing additive, such as aluminum powder, aluminum nitride and/or aluminum phosphide, at temperatures between 1850 DEG  C. and 2300 DEG  C. under a pressure of at least 100 bar (10 MPa).
Patent EP-0025196-A1 (EP)
Inventor: WRIGHT JOHN OWEN
IPC: B62D63/06
Filed: 1980-08-29
Abstract: A folding tailer (20) is provided having a chassis (21) support by at least one pair of road wheels (24) and a load bearing platform (22,23) supported by the chassis (21), the load bearing platform (22,23) being formed in two sections (22,23) which are foldable between a first position in which the sections (22,23) lie in a common plane and a second position in which the sections (22,23) lie juxtaposed in parallel planes. When in the second position the trailer (20) can be moved into a substantially vertical plane for stowage.
Patent EP-0031090-A1 (EP)
Inventor: WELLHAEUSER ROBERT DR
IPC: A23L13/00
Filed: 1980-12-11
Abstract: A dried foodstuff based on meat which is produced from meat cut into pieces and moulded into a thick slab-like composite having specified dimensions. It has the appearance of a waxed, raw, dried meat and can be produced by mincing raw meat, moulding or extruding the meat, simmering and drying.
Patent EP-0020059-A1 (EP)
Inventor: BOWERS ROBERT C
IPC: G11B23/023
Filed: 1980-05-16
Abstract: A protective cap (10) for protecting the magnetic tape of a tape cassette (14) from damage and exposure to dust while the tape cassette is not in operation. A plastic strip (12) covers the apertures of the engaging wall (15) of the tape cassette and is held in position by prongs (11) integral therewith. The prongs project into the apertures. The plastic strip can be removed by gripping it at one end (13) at which it extends beyond the end of the wall and by pulling it away from the tape cassette.
Patent EP-0024132-A1 (EP)
Inventor: FARRELL FRANCIS M III
IPC: B65D25/08
Filed: 1980-07-24
Abstract: A container for shipping, storing and mixing at least two fluids has a covered cylindrical outer container for containing a first fluid and a coaxial, smaller diameter inner container for the second fluid. The inner container is closed at the end adjacent the cover of the outer container by a piston and atthe opposite end by a removable seal. A plurality of mixing blades are spaced around the inner container and are coupled to a drive plate in the cover of the outer container for rotation therewith. The drive plate has an axial opening for a pusher rod to enter and push the piston down the inner container to expel the second fluid into the first fluid in the outer container, the fluids then being mixed by rotation of the drive plate.
Patent EP-0026586-A1 (EP)
Inventor: MINNIS GARY RAY
IPC: F04C14/26
Filed: 1980-09-04
Abstract: A flow control valve (14) comprises a slidable valve member (18) and a variable orifice structure (20). The valve member slides in response to a pressure differential, created by fluid flow through the variable orifice structure, to bypass fluid in a positive-displacement pump (10). The variable orifice structure is a self-contained unit including a longitudinally movable pin (36) which has a variable cross- section and is disposed in an orifice aperture (30). The longitudinal position of the pin in the aperture controls the size of the orifice and therefore imposes a variable flow restriction which creates the pressure differential. 
     The flow control valve is useful with power steering hydraulic pumps and systems where it is desirable to reduce the amount of hydraulic fluid which is delivered to the steering mechanism when the pump input speed exceeds a predetermined value.
Patent EP-0028496-A1 (EP)
Inventor: TOWNSEND RODNEY COLCIN
IPC: E21D15/02
Filed: 1980-10-28
Abstract: A prop 10 intended particularly for use in underground mines, is made of timber. At one or both ends of the prop, a reduced diameter portion 11 is formed. The rest of the prop has a larger diameter 12. At the end or ends of the larger diameter portion 12 adjacent the reduced diameter portion(s) 11, a restraining ring 13 surrounds the prop.
Patent EP-0031696-A1 (EP)
Inventor: BREMER NOEL JEROME
IPC: C07C51/25
Filed: 1980-12-19
Abstract: A problem which occurs in the production of an oxidation catalyst containing vanadium and phosphorus is recovery of the catalyst precursor prior to calcination. Such a catalyst is made by a process which involves
     a) introducing pentavalent vanadium-compound into an organic liquid capable of at least partially solubilizing and capable of reducing vanadium to a valence state less than +5 to form a reaction medium;   b) effecting reduction of at least a portion of said vanadium to a valence state of +4:   c) removing unsolubilized vanadium-containing compounds having a particle size greater than about 0.1 mm diameter   d) adding a pentavalent phosphorus-containing compound to the reaction medium resulting from step c) to form a catalyst precursor precipitate:   e) recovering said catalyst precursor precipitate:   f) drying said catalyst precursor precipitate:   g) calcining said precipitate to form the active oxidation catalyst.   
     In this process the recovery of catalyst precursor is facilitated since it is obtained as a precipitate, and the catalyst precursor when made by the process is more readily tabletted than before calcination The catalyst also has an improved yield and selectivity in the conversion of 4-atom hydrocarbons to maleic anhydride.
Patent EP-0053214-A1 (EP)
Title: Système de distribution de signaux numériques
Inventor: FROMENT JEAN-CLAUDE
IPC: H04L25/40
Filed: 1980-11-28
Abstract: Système de distribution de signaux numériques en des points éloignés d'une machine. Il comprend placé à chaque point un dispositif de distribution (2), (3). Dans chaque dispositif un récepteur R (4), (6) reçoit sur ses entrées vraie et complémentaire (I) et (I) les signaux à distribuer. Les circuits d'attaque sont connectés aux récepteurs par une connexion croisée, la sortie vraie (Q) du récepteur étant connectée à l'entrée complémentaire (I) du circuit d'attaque et la sortie complémentaire (Q) du récepteur étant connectée à l'entrée vraie (I) du circuit d'attaque, de façon à éliminer la distorsion de la largeur d'impulsion du signal à distribuer. Les signaux sur les sorties Q et Q des circuits d'attaque peuvent être utilisés localement ou transmis en un autre point éloigné.
Patent EP-0024072-A1 (EP)
Inventor: WEHRLI HANS
IPC: A63C7/10
Filed: 1980-09-11
Abstract: Un etrier (3) en forme de U, possedant deux parties, une partie (4) soutenant le pied et une partie (5) formant le frein, est monte sur un socle (7) dans un trou de fixation (19); cet etrier est monte basculant autour d'un axe (8) perpendiculaire a l'axe longitudinal du ski. Dans les canaux (12) du socle (7) sont disposes deux ressorts de rappel (9) qui, lors de la liberation de la partie (4) soutenant le pied, basculent dans la position de freinage et se fixent dans cette position. Par la disposition approximativement horizontale des ressorts de rappel, ce qui conduit au maintien d'un angle d'attaque suffisant entre la partie (4) et la piece de soutien, on atteint une hauteur du socle (9) faible, cependant suffisante au logement des ressorts de rappel. Dans la position de non freinage, la partie (5) formant le frein est disposee a l'interieur de la largeur du ski a une certaine distance au-dessus de la surface superieure du ski. En passant a la position de freinage, les bras (5) de la partie formant le frein s'ecartent obliquement de telle facon qu'ils puissent se mouvoir a cote des bords du ski.
Patent EP-0023907-A1 (EP)
Title: Dispositif pour reservoir contenant un liquide en vue du stockage de l'energie thermique
Inventor: SVENSSON JAN
IPC: F24H7/00
Filed: 1980-08-25
Abstract: Lorsqu'on stocke de l'energie thermique dans un reservoir de stockage (1) de fluide chauffe, il est avantageux de maintenir un equilibre thermique dans le fluide lorsque l'on remplit et l'on vide le reservoir (1). Lorsqu'il y a equilibre thermique, la temperature dans le fluide monte continuellement du fond du reservoir (1) vers la surface du fluide. Le reservoir (1) est rempli au moyen d'au moins un tube (2, 9). Pour empecher toute perturbation de l'equilibre thermique lors du remplissage du reservoir, l'ouverture du tube (2, 9) est disposee dans une chambre (6), placee dans le reservoir, cette chambre ayant une longueur d'environ la moitie de la profondeur du reservoir. Les parois laterales de la chambre (10, 11) sont perforees pour permettre au fluide de s'ecouler au travers desdites parois. Lorsque l'on remplit le reservoir (1) avec un fluide ayant une temperature inferieure a la temperature moyenne du fluide dans le reservoir (1), la chambre (6) est disposee dans la moitie inferieure du reservoir. Par analogie, lorsque la temperature du fluide est superieure a la temperature moyenne du fluide dans le reservoir, la chambre (6) est disposee dans la moitie superieure du reservoir (1).
Patent EP-0051582-A1 (EP)
Inventor: HALLEN LARS-AKE
IPC: C02F3/08
Filed: 1980-05-22
Abstract: Procede de traitement biochimique d'eaux usees, consistant a immerger un rotor de materiau de contact donnant une surface de croissance microbiologique dans des eaux usees superieure a 50% de son volume, de preference 55-85%, et pour eviter les risques de conditions anaerobies dans la partie centrale du rotor, l'alimentation d'oxygene aux eaux usees est accrue en augmentant par exemple le nombre de tours minute du rotor jusqu'a trois tours minute par exemple, obtenant ainsi par unite de temps une plus grande surface soumise a l'oxygene atmospherique.
Patent EP-0039915-A1 (EP)
Inventor: SAKAMOTO HITOSHI C O SONY CORP
IPC: H04N5/783
Filed: 1981-05-07
Abstract: A video tape recording/reproducing apparatus for reproducing rideo signals recorded in successive parallel tracks on a magnetic tape includes a magnetic head (14) for scanning the tracks to reproduce the signals recorded therein: a bi-morph leaf (16) for deflecting the head in a direction transverse to the direction along the tracks; a controllable oscillator (24) for supplying a wobbling signal to the bi-morph leaf (16) so as to control the latter to deflect the head to oscillate in a transverse direction with respect to the tracks, wherein the signals reproduced by the head (14) are amplitude modulated at the frequency of the wobbling signal; a tracking error detecting loop for supplying a tracking error signal, corresponding to deviation of the head (14) from the respective track being scanned, to the bi-morph leaf (16) so as to control the latter to correct the deviation; and. a signal detecting loop for detecting the fundamental and second harmonic components of the amplitude modulated signals reproduced by the head and for controlling the amplitude of the wobbling signal from the controllable oscillator (24) in response to a ratio of the levels of the second and fundamental harmonic components so asto reduce the amplitude of the wobbling signal for small tracking errors and to increase the amplitude of the wobbling signal for large tracking errors.
Patent EP-0043908-A1 (EP)
Inventor: COLLIN KARL-HEINZ DIPL-ING
IPC: F02C7/22
Filed: 1981-05-29
Abstract: Eine Zerstäuberdüse für kontinuierliche Brennstoffeinspritzung, die als Haupteinspritzdüse oder als Zündfackel für Brennkammern dienen kann, weist eine Einlochbrennstoffdüse und einen davor gelegenen koaxialen Ringspalt (4) für zusätzlich mögliche Luftzufuhr auf. Der Raum (11) zwischen Düsenöffnung (2) und Ringspalt (4) ist über Druckausgleichsöffnungen (7) mit dem Brennerraum (10) hinter dem Ringspalt (4) verbunden. Die Druckausgleichsöffnungen (7) werden durch einzelne Distanzstücke (6) zwischen Brennstoffdüsenkörper (1) und Luftdüsenring (3) dargestellt.
Patent EP-0054681-A1 (EP)
Inventor: FISCHER ARTUR DR H C
IPC: F16B13/12
Filed: 1981-10-24
Abstract: Fastener means consisting of a plastic dowel and a fastening screw, the dowel having a slot (2) originating from its front end and running over a part of its length, and a longitudinal hole (3) into which can be screwed the fastening screw, which is provided with a round thread. In order to design the fastener means for ceiling installation on the one hand and for soft building materials on the other hand, the dowel has an internal thread (4), the inclination and profile of which are matched to the round thread of the fastening screw, and the external and core size of which is smaller than the corresponding size of the round thread of the fastening screw. <IMAGE>
Patent EP-0052261-A1 (EP)
Inventor: REIL WILHELM
IPC: B31B50/32
Filed: 1981-10-24
Abstract: Two-piece containers having a one-piece tubular body and base and a cover molded onto the body are formed from a continuous web of thermoplastic supporting material by means of an apparatus which includes tube forming, cover molding, container filling and container base sealing stations. The web of material is initially formed into a strand of partially assembled tubular container bodies having fold impressions for the base and then severed into separate tubular bodies for further processing, filling and sealing.
Patent EP-0081003-A1 (EP)
Inventor: HOSE LORENZ
IPC: B63B35/79
Filed: 1981-12-07
Abstract: In order to allow the mast fixed of a sail craft, particularly a surf board, to have greater freedom, the mast is mounted so as to swing and rotate on a pole (2) mounted itself swingable and rotatable or foldable on the body (1) of the craft.
Patent EP-0042630-A1 (EP)
Inventor: SESSINK BERNARDUS WILHELMUS LA
IPC: G03G15/20
Filed: 1981-04-01
Abstract: An electrographic apparatus is described by means of which powder images, corresponding to electrostatic images, can be formed and heat contact fixed upon a receiving material (16,19). 
     The quantity of receiving material (16,19) transported past the fixing device (15) per unit of time is dependent on the heat content on the fixing device (15) as well as on the heat capacity of the receiving material (16,19). The formation of electrostatic or powder images can also be dependent on the heat content of the fixing device (15) and the heat capacity of the receiving material (16,19). 
     When a fixed time interval must be present between subsequent points of time when an electrostatic or powder image can be formed, each time a first number of electrostatic or powder images has been formed a second number of fixed time intervals is caused to lapse before another electrostatic or powder image is formed.
Patent EP-0052392-A1 (EP)
Inventor: VAN HERK ALFRED
IPC: G11B5/29
Filed: 1981-10-29
Abstract: A magnetic head (31) for writing and/or reading information in mutually parallel tracks of a magnetic recording medium (32) with high track density. By causing the transducing gap (34) of the head (31) to be bevelled in the depth, the lateral cross-talk in particular is reduced, at least in a given wavelength range where the wavelength is of the same order of magnitude as the gap depth (d). The transducing gap bevel makes an angle which is not greater than 45° with the face of the head facing the recording medium during operation.
Patent EP-0063654-A1 (EP)
Inventor: BOYNTON DONALD EUGENE
IPC: C08F8/50
Filed: 1981-04-23
Abstract: The molecular weight of crystalline propylene polymer can be lowered, giving an environmentally stable plastic composition having narrow molecular weight distribution by visbreaking a propylene polymer using an activated portion (e.g. 0,5 to 50%) of the propylene polymer as a prodegradant. The prodegradant is formed by activating a portion of the propylene polymer by exposure to ionizing radiation. Visbreaking takes place at 200 to 300°C by shear mixing in an extruder.
Patent EP-0040915-A1 (EP)
Inventor: AINSWORTH ANTHONY TREVOR
IPC: A61K31/165
Filed: 1981-04-29
Abstract: Compounds of formula (II):
     or a pharmaceutically acceptable salt, lower alkyl or aralkyl ester or amide thereof, wherein R 1  and R 2 , which may be the same or different, are each a hydrogen atom or a methyl group, n is 1, 2 or 3, and Z is a C 1-6  alkyl or C 1-6  alkoxy group, or a halogen or hydrogen atom, are useful in treating obesity and/or hyperglycaemia and/or inflammation in mammals.
Patent EP-0040936-A1 (EP)
Inventor: BELSTERLING CHARLES A
IPC: H02P11/04
Filed: 1981-05-15
Abstract: A d.c. generator 36 is connected in series opposed to the polarity of a d.c. power source 34 supplying a d.c. drive motor 32. The generator 36 is part of a motor/generator set, the motor 38 of which is supplied from the power source 34 connected to the drive motor 32. A generator field control means 44 varies the field produced by at least one of the generator field windings 36a in order to change the effective voltage output of the generator 36. When the generator voltage is exactly equal to the d.c. voltage supply, no voltage is applied across the drive motor 32. As the field of the generator 36 is reduced, the drive motor 32 is supplied with an increasing voltage until the full voltage of the d.c. power source 34 is supplied when the generator 36 has zero field applied. Additional voltage may be applied across the drive motor 32 by reversing and increasing the reversed field on-the generator 36. The drive motor 32 may be made to rotate in the opposite direction from standstill by increasing the generator field so that a reverse voltage is applied across the d.c. motor 32. The system has particular application to vehicular drives. Reactive braking is possible, energy extracted from the vehicle 30 by the motor 32 being fed back to the battery 34. The power source can be a.c., the motor 38 then being an a.c. motor and the battery 34 a rectifier circuit.
Patent EP-0048074-A1 (EP)
Inventor: LUPKE MANFRED ARNO ALFRED
IPC: B29C48/32
Filed: 1981-05-18
Abstract: A feed mechanism comprising a rotor and an endless flexible belt carried by the rotor. The rotor comprises a pair of cylindrical guide members arranged coaxially one within the other, the guide members being mounted for rotation in unison about a common axis. Each of the guide members provides a helical groove defining a respective feed channel, the grooves being of the same pitch and opposite hand, and the belt is constrained by the guide members to extend helically along the feed channels in sliding engagement with the guide members. The belt protrudes from one of the feed channels to engage a restraining surface which restrains the belt against rotation so that, in response to rotation of the rotor, the belt is continuously advanced along one of the feed channels and returned along the other, thereby providing a continuously advancing non-rotary bearing surface which bears against the restraining surface.
Patent EP-0038747-A1 (EP)
Inventor: GROSJEAN GERARD
IPC: F16H9/06
Filed: 1981-04-14
Abstract: 1. A selective device for driving at least two driven elements by means of a single motor, of the type comprising at least two drive pulleys (11, 12, 13) connected to rotate with a motor shaft (10) and connected by belts (14, 15, 16) to driven pulleys, respectively associated with each of the driven elements, the belts (14, 15, 16) having in the free state such length and tension that they do not achieve the driving of the driven pulleys (17, 20, 26), and means (37) capable of being selectively brought, relative to the various belts, into a plurality of positions in which they impart to a selected belt sufficient tension for achieving the driving of the associated driven element, characterised in that said means comprise a tension roller (37) carried by a support (38) mounted to be slidable and pivotable on a fixed guide rod (39) parallel to the motor shaft (10).