baber/WOPTO huggingface dataset:
Patent DE-2602036-B1 (DE)
Title: Thermally controlled condensate drain valve - has expanding discs on bracket with externally accessible adjustment screw
Inventor: PAUL RICHTER HANS EMIL FRANZ
IPC: F16T1/10
Filed: 1976-01-21
Abstract: The thermally-controlled condensate drainer has a drain valve actuated by an expanding disc pair (7) connected to the valve plug (23) of the drain valve, with the valve seat (8) projecting into the drainer housing. The expansion discs are held on a U shaped bracket (4) attached by one arm to the drain valve seat. The valve is adjusted from outside to ensure that the expansion behaviour relative to temperatures is readily compensated. The spring bracket arm (5a) holds the expansion discs (7) and end plug (23). The other arm (5) of the bracket is held on a sliding sleeve (8), the position of which is adjusted externally by an eccentric on the end of adjusting screw. The screw setting is altered from outside and locked after the setting has been made.
Patent DE-2718677-B1 (DE)
Inventor: HIPPIN OSKAR
IPC: B08B7/02
Filed: 1977-04-27
Abstract: The bearer (16) of the device, which bearer (16) can be guided on supporting rollers (12) over the surface to be treated, has on its underside (44) a multiplicity of striking pins (30) which in operation can simultaneously and intermittently strike the treatment surface by means of an actuating device (18). For optimum adaptation to the respective structure of the treatment surface, the bearer (16) contains a supporting body (17) which is movable up and down and has a top striking plate (20) and a bottom perforated plate (22), in the holes (28) of which striking pins (30) with head-like stops (32) are held in a longitudinally displaceable manner. The supporting body (17) is fastened to a pneumatic cylinder/piston unit (18a, 38, 40, 42) as actuating device (18), and the striking pins (30) are guided in guide bores (34) of a guide body (36) at the bearer (16). The guide bores (34) parallel to one another can be orientated at right angles or, for example, at an acute angle to the underside (44). This device guarantees cost-saving cleaning of a background without dust accumulation and in particular without disadvantages for a subsequent treatment of the cleaned background. <IMAGE>
Patent DE-2757315-B1 (DE)
Inventor: BANKSTAHL NORBERT ING
IPC: E03C1/042
Filed: 1977-12-22
Abstract: The recessed valve has an operating spindle (4) and a protective sleeve (5) surrounding this spindle. The protective sleeve (5) is provided at its circumferential surface (8) with encircling notches (12) which serve as predetermined braking points, allowing the sleeve (5) to be shortened in stages in accordance with the different installation depths. The spindle (4) too can have grooves (121) as predetermined braking points and these, in turn, allow the length of the spindle to be adapted to that of the protective sleeve (5). <IMAGE>
Patent DE-3032296-B1 (DE)
Inventor: POOCH ING GRAD GERHARD
IPC: H04L7/04
Filed: 1980-08-27
Abstract: A circuit is provided for synchronizing a transmitting/receiving station to the data network of a digital communications system having a correlation receiver in the relevant receiving device which supplies a correlation signal serving for synchronization purposes. The function of the correlation receiver is to implement the bit synchronization and block synchronization for the most favorable radio range from an asynchronous state, in the synchronous state to supply the adjustment criteria for the current radio range and, in the event of rebooking, to supply those of all the other possible radio ranges (indirect access to the adjusting elements via a computer). For this purpose, in the receiving device, the incoming non-generated items of received data are fed, on the one hand, to the correlation receiver and, on the other hand, to a regenerating device which can be set up by the signals of the correlation receiver. The correlation receiver comprises a signal output for the received pulse train setting-up (bit synchronization) and a signal output for block synchronization. The two signal outputs are connected to a computer. In addition, the signal output for the bit synchronization is connected to the regenerating device via a computer-control switch and via a phase pulse train shift device, whereas the signal output for block synchronization is connected thereto via a switch which is also controlled by the computer.
Patent WO-9928252-B1 (WO)
Title: Briquettes pour la production de fibres minerales et leur utilisation
Inventor: RANLOV JENS
IPC: C03C13/06
Filed: 1998-12-02
Abstract: La présente invention concerne un procédé de production de fibres vitreuses dont la composition massique comporte, rapporté aux oxydes, au moins 14 % d'aluminium sous forme de Al2O3. Ce procédé consiste à placer dans un four à cuve de cuisson une cheminée autostable de charge minérale comprenant des briquettes, à faire fondre la charge pour obtenir au cul du four un bain de fusion, à évacuer par le cul du four le bain de fusion, puis à fibériser le bain. En l'occurrence, un quart au moins de l'aluminium de la charge est introduit sous forme de briquettes de matière minérale particulaire renfermant de l'alumine. De fait, cette matière minérale particulaire renfermant de l'alumine est constituée d'aluminium métal pour 0,5% à 10% de la masse, d'alumine (Al2O3) pour 50% à 90% de la masse, et d'autres matériaux pour 0% à 49,5% de la masse.
Patent ES-2070074-B1 (ES)
Title: Perfeccionamientos en la fabricacion de elementos de recipiente para fluidos a presion.
Inventor: BULLICH TRALLERO JAVIER
IPC: B29C48/32
Filed: 1993-04-01
Granted: 1996-02-16
Abstract: ESTOS PERFECCIONAMIENTOS EN LA FABRICACION DE ELEMENTOS DE RECIPIENTE PARA FLUIDOS A PRESION, CONSISTEN EN QUE SE DISPONE DE UN MOLDE TUBULAR VERTICAL DE BASE INFERIOR CERRADA Y DE UN PUNZON MOVIL, A MANERA DE CONTRAMOLDE AXIAL, QUE DETERMINAN UNA CAMARA DE MOLDEO, DOTADOS DE MEDIOS PARA SU ACONDICIONAMIENTO TERMICO Y PARA CONSTITUIR UNA ATMOSFERA CONTROLADA SINTETICA EN DICHA CAMARA DE MOLDEO, EN LA CUAL SE INTRODUCE, POR VERTIDO, UN MONOMERO, JUNTO CON LOS CORRESPONDIENTES CATALIZADORES Y ACELERANTE, EN LA CANTIDAD NECESARIA PARA OBTENER EL ELEMENTO DE RECIPIENTE, TRAS LO CUAL SE PROCEDE A LA POLIMERIZACION DEL MONOMERO Y, POSTERIORMENTE, AL DESMOLDEO DEL ELEMENTO OBTENIDO, POR DESPLAZAMIENTO DEL PUNZON MOVIL.
Patent ES-2068145-B1 (ES)
Title: Maquina para colocar una pluralidad de etiquetas de identificacion sobre un carrete fotografico.
Inventor: AGUILAR DAROCAS MANUEL
IPC: G03D15/00
Filed: 1993-05-13
Granted: 1998-02-01
Abstract: MAQUINA PARA COLOCAR UNA PLURALIDAD DE ETIQUETAS DE IDENTIFICACION SOBRE UN CARRETE FOTOGRAFICO. COMPRENDE MEDIOS (40) PARA HACER AVANZAR EL CARRETE FOTOGRAFICO; MEDIOS (20, 30) PARA RETIRAR ETIQUETAS AUTOADHESIVAS (E) DE UNA LAMINA (3) Y DEPOSITARLAS EN POSICIONES ADECUADAS DEL CARRETE (10); Y MEDIOS DE CONTROL Y SINCRONIZACION. EN UNA REALIZACION, LA MAQUINA COMPRENDE UN DISPOSITIVO NEUMATICO (30) DE ASPIRACION CONTROLADA, QUE MEDIANTE UN CILINDRO DE DOBLE EFECTO (21) SE DESPLAZA ENTRE UNA PRIMERA POSICION QUE COINCIDE CON LA POSICION DE LA ETIQUETA (E) QUE SE HALLA SOBRE LA LAMINA DE SOPORTE (3), EN LA CUAL EL DISPOSITIVO (30) ASPIRA Y RECOGE LA ETIQUETA, Y UNA SEGUNDA POSICION, EN LA CUAL EL DISPOSITIVO (30) DESCIENDE Y DEJA DE ASPIRAR PARA DEPOSITAR LA ETIQUETA SOBRE EL CARRETE. LA PRIMERA POSICION PUEDE HACERSE VARIAR PARA QUE COINCIDA SUCESIVAMENTE CON LAS DIFERENTES POSICIONES DE UNA HILERA DE ETIQUETAS. LA MAQUINA SE PUEDE INTEGRAR EN EL PROCESO AUTOMATICO DE TRATAMIENTO DE CARRETES, Y PERMITE ETIQUETAR LAS FOTOGRAFIAS DE UNA PLURALIDAD DE CARRETES DE FORMA CORRELATIVA, A PARTIR DE UN NUMERO DESEADO, SIN NECESIDAD DE INTERVENCION MANUAL.
Patent ES-2100118-B1 (ES)
Title: Sistema de induccion vibracional de hiperfrecuencias.
Inventor: MERINO DE LA FUENTE RAMIRO MAU
IPC: A61N7/00
Filed: 1994-03-23
Granted: 1997-12-16
Abstract: EL SISTEMA CONSISTE EN UN GENERADOR ELECTRONICO DE ALTAS FRECUENCIAS PARA CONTROLAR EL FISIOLOGISMO DE LOS SERES DE ESCALA BIOLOGICA EN GENERAL. CONSTA DE UN AMPLIFICADOR CONTROLADO POR LA INTERFACE (7) DE UN ORDENADOR (8) O POR EL OSCILADOR (1), QUE GOBIERNE EL GENERADOR DE ARCO (3) CONECTADO AL LIMITADOR (4), EL SINTETIZADOR (5) Y LA ANTENA (6), LA CUAL ESTIMULA CON SUS ONDAS A LOS SERES VIVOS, SIENDO LA DOSIS MEDIDA POR EL SENSOR (10) CONECTADO AL INTERFACE (7) DEL ORDENADOR (8). TODO ELLO ALIMENTADO POR LA FUENTE (9).
Patent ES-2102950-B1 (ES)
Title: Union de enchufe electrica
Inventor: HOFMEISTER WERNER
IPC: H01R13/52
Filed: 1994-06-20
Granted: 1998-02-16
Abstract: UNION DE ENCHUFE ELECTRICA CON UN ENCHUFE (11) Y CON UN ENCHUFE CONTRARIO (12) ASOCIADO, QUE SE HA DE REALIZAR DE MANERA QUE LAS CARGAS DE VIBRACION ACTUANTES NO EJERZAN NINGUNA O SOLO POCAS INFLUENCIAS PERTURBADORAS SOBRE LOS CONTACTOS (25, 28) DE LA UNION DE ENCHUFE. EL ENCHUFE (11) PRESENTA PARA ESTO UN MEDIO DE OBTURACION (19) ALOJADO EXTERIORMENTE EN UN SOPORTE DE CONTACTOS (14), EN LA FORMA DE UNA JUNTA RADIAL CERRADA, CIRCUNDANTE, QUE CONTIENE, ADEMAS DE UN CUERPO PRINCIPAL (37) EN FORMA DE MARCO, QUE PRODUCE LA OBTURACION CON RESPECTO AL ENCHUFE CONTRARIO (12), SECCIONES DE SUJECION (41) EN FORMA DE ESPIGAS QUE DIRIGIDAS HACIA DENTRO PRESIONAN ELASTICAMENTE SOBRE EL ELEMENTO DE CONTACTO (25) DEL ENCHUFE (11) Y LE ESTABILIZAN EN SU POSICION. ESTA UNION POR ENCHUFE SE UTILIZA PREFERENTEMENTE EN VEHICULOS MOTORIZADOS, EN CUYO FUNCIONAMIENTO SE HA DE CONTAR CON ALTAS CARGAS DE VIBRACION.
Patent ES-2154085-B1 (ES)
Title: Instalacion de calefaccion o climatizacion para un automovil.
Inventor: HEINRICH PETER
IPC: B60H1/00
Filed: 1996-10-16
Granted: 2001-10-16
Abstract: Instalación de calefacción o climatización para un automóvil, en la que el órgano giratorio de control presenta un tramo de bimetal de tal modo que, cuando tiene lugar una desviación de la temperatura, el órgano giratorio de control controla como consecuencia de la deformación del bimetal el flujo de aire en el sentido de una compensación de la desviación de la temperatura, con lo que no se tiene que reajustar mecánicamente por una persona que maneja el mecanismo o una regulación electrónica regula la desviación de la temperatura. Es de aplicación como instalación de calefacción o climatización de vehículos.
Patent ES-2125842-B1 (ES)
Inventor: MARTINEZ HERRERA DAVID
IPC: C12N15/40
Filed: 1997-07-09
Granted: 1999-12-01
Abstract: The infectious clone comprises: a) a complete copy of the complementary DNA (cDNA) to the genomic RNA of the turnip mosaic virus (TuMV), in the form of double stranded DNA, b) a transcription promoter sequence, c) a replicon and, optionally, d) a transcription termination or polyadenilation sequence. Viral vectors comprise an infectious clone modified to contain a gene or a heterologous gene fragment. Infectious viral clones and vectors are useful for basic research in virology and for the expression of genes and epitopes of interest. <IMAGE>
Patent ES-2138565-B1 (ES)
Title: Uso del interferon alfa 5 en el tratamiento de las hepatopatias viral es.
Inventor: PRIETO VALTUENA JESUS
IPC: A61K48/00
Filed: 1998-05-13
Granted: 2000-08-16
Abstract: Uso del interferon alfa-5 en el tratamiento de las hepatopatías virales. La invención describe la síntesis disminuida de IFNa-5 en hígados de pacientes con hepatitis C, frente a hígados de controles sanos. El subtipo de IFN expresado en dichos hígados sanos, correspondió únicamente al subtipo alfa-5, frente a los diferentes subtipos expresados en hígados enfermos. En SEQ ID NO:1 se muestra la secuencia parcial de cADN correspondiente a IFNa 5. Estas diferencias significativas entre los patrones de expresión de unos hígados y otros ponen de manifiesto la importancia del uso de este subtipo de interferon en la fabricación de composiciones útiles en el tratamiento de hepatopatías de origen viral. En la invención se describe pormenorizadamente esta utilización bajo diferentes formas y procedimientos, incluyendo aquellos que utilizan la producción de proteínas recombinantes, a partir de secuencias tipo SEQ ID NO:1.
Patent FR-2805112-B1 (FR)
Inventor: MANGIN CHRISTOPHE
IPC: H04L12/70
Filed: 2000-02-11
Granted: 2002-04-26
Abstract: The invention proposes a method and a unit for controlling the flow of at least one TCP connection between a sender and a receiver. The method is of the type which consists in controlling, at the level of a given multiplexing node through which TCP segments relevant to the connection pass, a window size parameter contained in acknowledgement segments sent back by the receiver. The method comprises the steps of: a) receiving an acknowledgement from the receiver on the up link (receiver to sender) of the connection at the level of said given multiplexing node; b) controlling a window size parameter contained in, said acknowledgement segment on the basis of the difference between, firstly, a first context value associated with the TCP connection, defined as being the sequence number of the last segment that was transmitted from said given multiplexing node on the down link (sender to receiver) of the connection, to which the length of said segment is added, and, secondly, the sequence number indicated in said acknowledgement segment; c) transmitting the acknowledgement segment to the sender the up link of the connection from said multiplexing node with the window size parameter thus controlled.
Patent FR-2807421-B1 (FR)
Inventor: GOUTENOIRE FRANCOIS
IPC: H01M8/1246
Filed: 2000-04-07
Granted: 2002-07-12
Abstract: The invention concerns novel compounds derived from La<SUB>2</SUB>Mo<SUB>2</SUB>O<SUB>9 </SUB>and their use as ion conductors. The compounds of the invention have formula (1): <?in-line-formulae description="In-line Formulae" end="lead"?>A<SUB>2-x</SUB>A'<SUB>x</SUB>B<SUB>2-y</SUB>B'<SUB>y</SUB>O<SUB>9-z+delta</SUB>X<SUB>z</SUB><?in-line-formulae description="In-line Formulae" end="tail"?> in which A is at least one trivalent element selected from trivalent rare earths, trivalent bismuth, trivalent antimony and trivalent arsenic; A' is at least one monovalent element selected from alkalis; or a divalent element selected from alkaline-earths, tin, lead, samarium, europium, erbium, thulium and ytterbium; or a quadrivalent element selected from thorium, uranium, group IVA elements, cerium, praseodymium and terbium; B is at least one hexavalent element from groups VIA, VIIA, VIII and group VIB with the exception of oxygen; B' is at least one element selected from lithium, sodium, magnesium, calcium, scandium, yttrium, rare earths with atomic numbers 63 to 71, elements from groups IVA to IIB with an oxidation number of less than 6, aluminium III, silicon IV, gallium III, germanium IV, indium III, tin IV, phosphorus V, antimony V and bismuth V; X is selected from sulphur, fluorine and chlorine; where 0<=x<2; 0<=y<2; 0<=z<=3; and with the condition that when A is lanthanum and B is tungsten or molybdenum, at least one of x, y or z is different from 0; the compounds having a cationic cubic or pseudo-cubic beta-SnWO<SUB>4 </SUB>type lattice.
Patent FR-2807436-B1 (FR)
Inventor: PERRET STEPHANIE
IPC: A61F2/82
Filed: 2000-04-10
Granted: 2002-05-24
Abstract: The present invention relates to a process for the production of fibres of an unhydroxylated recombinant collagen polypeptide, and the fibres obtained thereby, as well as to uses of such fibres as a biomaterial.
Patent FR-2808339-B1 (FR)
Inventor: AVENEL JEAN JACQUES
IPC: B60R25/20
Filed: 2000-04-26
Granted: 2003-06-13
Abstract: The invention concerns a vehicle comprising a system enabling a user to control remotely an actuating mechanism ( 1 ) connected to an opening panel, in particular a boot opening panel ( 8 ). The control system comprises means, equipping the vehicle, for controlling at least an action of the actuating mechanism, according to the movement of an object, such as a hand, vertically in a delimited control zone adjacent to the opening panel. Said movement is determined from signals obtained from at least a movement sensor ( 7 ) placed on or proximate to the opening panel and whereof the radiation pattern if fixed to delimit the control zone.
Patent FR-2817088-B1 (FR)
Inventor: BRUNET MAURICE
IPC: F01D25/16
Filed: 2000-11-17
Granted: 2003-02-21
Abstract: The rotary machine comprises a rotary shaft ( 2 ) supported by first and second radial magnetic bearings ( 5, 6 ) that are electrically controlled by a control device ( 13 ), said rotary shaft being fitted with an axial abutment device ( 100 ) comprising a rotor formed by a disk ( 101 ) secured to the rotary shaft ( 2 ) and interposed between first and second stators ( 102, 104 ) formed annularly around the rotary shaft and each including at least one annular coil ( 103; 105 ) controlled electrically by a system for servo-controlling the axial position of the rotary shaft. The stator ( 104 ) of the axial abutment device ( 100 ) further comprises a secondary induction circuit ( 106 ), and the disk ( 101 ) secured to the rotary shaft comprises a primary induction circuit ( 107 ) so that during rotation of the shaft, electricity is excited in the secondary induction circuit in order to supply energy to the radial magnetic bearings.
Patent FR-2834120-B1 (FR)
Inventor: BAURAND GILLES
IPC: H01H1/00
Filed: 2001-12-21
Granted: 2004-02-06
Abstract: The pole contact (C1,C2,C3) wear determination method has an electromagnet (20) with movement controlled by a field coil (21). Wear is determined on the basis of the contact wear stroke produced during a movement closing the electromagnet. An electric signal is measured on the conducting status of a power pole, by measuring the excitation current flowing in the coil on a time basis. The measured wear time is then compared with the initial travel time.
Patent FR-2841333-B1 (FR)
Inventor: THERY JEAN
IPC: F41F3/06
Filed: 2002-06-20
Granted: 2006-05-26
Abstract: The system has first control units for separating the lower longitudinal part (7A) of the low radar signature tube from the top part (7B) which is connected to the external body of the aircraft (A) such that it creates in the tube, by its separation, an opening (8) allowing the complete ejection of the missile, with second control units (9) for controlling the first units, and third control units (10) controllable for movably connecting the missile when it is controlled, and fourth control units (11) for controlling the third control units.  The weapon system is carried by a stealth aircraft, and has a low radar signature tube (4) which is radar absorbing, with a missile (M) located inside this tube.
Patent FR-2856949-B1 (FR)
Inventor: CORNU DOMINIQUE
IPC: B27H3/02
Filed: 2003-07-02
Granted: 2006-08-25
Abstract: The inventive machine (10) for ripping horizontal logs makes it possible to optimise and automate wood ripping for producing wood pieces having a predetermined cross section and comprises a main frame (20) provided with a pushing device (30) and an assembly of knives (40) comprising a first series (50) knives and a second series of knives (60) which are perpendicular with respect to each other and arranged on the main frame. The knives of each series (50, 60) are mounted with variable gaps obtainable by adjusting devices (70, 80). The pushing device (30) comprises a movable carrier (31) consisting of an assembly of flat horizontal pieces (32) and an assembly of profiles (35) which a movable with respect to each other in such a way that it is possible to axially push a log towards a knife blade and to push wood pieces out of the knife when the log is ripped.
Patent FR-2878320-B1 (FR)
Inventor: BRUNET LUC
IPC: F42B12/72
Filed: 2004-11-22
Granted: 2009-05-08
Abstract: The less energy structure is smoke producing (75%)/lighting (75%) pyrotechnic composition, reinforcement material (15%), brass/brass powder (15%) and aluminized carbon/glass (25%). The fibers (0-5%) are kevlar, hemp, glass and carbon fibers (20%). The masking/deception materials (0-5%) are short carbon fibers, carbon and brass powders, bronze, spangles, metallized and covered polymeric fibers, conducting material and red phosphorus. The energetic material is covered by a protection layer. The reinforcement materials (10-30%) are micro balloons (10%), phenolics, polystyrene, trinitrotoluene (20%), hexogen (50%) and nanocarbon tubes. The energetic components are fusible secondary explosive material (10-30%) associated with a nonfusible explosive (50-60%) and synthetic binder (10-30%). The energetic material is useful for forming a body and/or wings of a pilotless aircraft. The load material is useful for camera and/or relay of information transmission of the pilotless aircraft.
Patent FR-2881136-B1 (FR)
Inventor: DUBOIS JEAN LUC
IPC: C07C57/05
Filed: 2005-01-21
Granted: 2007-03-23
Abstract: The invention relates to a method for preparing acrylic acid by oxidizing propylene and then acrolein, involving the recycling of gases that had not reacted by means of a partial oxidation of the propane, in parallel, at the end of the acrylic acid recovery step, then returning, to the propylene-converting reactor, a gas rich in both propane and propylene having been subjected to a second passage in the acrylic acid recovery column.
Patent FR-2889945-B1 (FR)
Inventor: KRAVTCHENKO SYLVAIN
IPC: A61K8/81
Filed: 2005-08-25
Granted: 2011-07-29
Abstract: Non-oxidant aqueous direct coloring composition for keratinous matters such as human hair, comprises water-soluble direct dye and a oxygenated non-dye organic compound (at least 30 wt.%) insoluble in water, where the composition is e.g. polyamides 6, polyamide 66, polyesters 11, polyurethane, polycyanoacrylates, methyl polymethacrylates, polycarbonates, Teflon (RTM: Polytetrafluoroethylene), resins or silicone elastomers or fatty acid ethers or fatty alcohols having 8-40C fatty acid esters. Non oxidant aqueous direct coloring composition for keratinous matters such as human hair, comprises cosmetic medium comprising water-soluble direct dye and oxygenated organic compound non-dye (at least 30 wt.%) insoluble in water, where the organic compound is polyamide-6, polyamide-66 or polyamide-11, polyesters, polyurethane, polycyanoacrylates, poly methylmethacrylates, polycarbonates, Teflon (RTM: Polytetrafluoroethylene), silicone resins or elastomers, fatty acid ethers or fatty alcohols having 8-40 carbon atoms, ethylene glycol mono or di-stearate, pentaerythritol monooleate, sorbitan tristearate, glycerol dioleate, esters, amides or fatty ethers of ethylene glycol or propylene glycol, distearyl ether, stearylic alcohol, behenylic alcohol or cetyl stearylic alcohol. An independent claim is included for a process of dyeing of keratinous fibers comprising applying the tinctorial composition to keratinous fibers, then leaving for 3 minutes to one hour, preferably 15-45 minutes, and rinsing the fibers.
Patent FR-2907422-B1 (FR)
Inventor: CHAVAGNAC CHRISTOPHE
IPC: B64C30/00
Filed: 2006-10-20
Granted: 2009-12-18
Abstract: An aircraft having propulsion units for both conventional aircraft flight in the atmosphere and for high-altitude operation as a rocket. The aircraft is divided into a payload compartment and a compartment containing rocket propulsion unit propellant or fuel, and includes a long transverse wing with a small back-sweep to favor lift in the dense layers of the atmosphere and to thus make it possible to climb to high altitudes at a subsonic speed before using the rocket propulsion units. The return flight portion is performed by gliding or controlled as for a conventional aircraft.