baber/WOPTO huggingface dataset:
Patent DE-2321013-A1 (DE)
Title: Etchant for silicon nitride layers on semiconductors - comprising dil hydrofluoric-phosphoric acids satd. with ammonium fluoride
Inventor: LOIC HENRY
IPC: H01L21/311
Filed: 1973-04-26
Abstract: Neither the silicon nitride layer nor the photolacquer mask need any special treatment, as the etchant does not harm the lacquer; etching can be done at room temp., after which the lacquer is easily removed. The substrate can be e.g. gallium phosphide or gallium aluminium arsenide. The etchant contains, all parts. vol., 7-13 conc. HF (50 wt.% HF), 26-34 water, 1-10 orthophosphoric acid (100% H3PO4), and this mixt. contains 60g min. ammonium fluoride/100cm3. A gallium aluminium arsenide substrate with a 0.1 mu layer of silicon nitride was etched with a mixt. of (all pts.vol.) 10 conc. HF, 30 water, 3 H3PO4, contg. 70g/100cm3 NH4F. The NH4F can be added to the mixt. until the latter is satd. so that the mixt. is buffered to a pH of 4.5. The removal of the silicon nitride took 60-80 minutes.
Patent DE-2335979-A1 (DE)
Title: Production of embossing-rollers from fabric-sections etc - by coating negative gypsum-impression with plastic, and setting in tube
Inventor: JANSSEN FRANZ
IPC: B41C1/18
Filed: 1973-07-14
Abstract: The negative impression is made as the original pattern, by throwing non-expanding and almost non-shrunk gypsum against the interior of the pattern tube section. The relief pattern section is removed from the negative impression, a thin plastic layer is brushed on the negative gypsum impression and an elastic tube is drawn over the plastic layer, which, on setting, combines with the tube. Finally, the embossing roller (or pressure-roller) is formed by the tube. Even the finest and deepest relief-patterns, as shown by loose woven fabrics and tulle, can be reproduced.
Patent DE-2337346-A1 (DE)
Title: Pressure generator for press - rollers of hydraulic piston exert longitudinal force against inclined plane
Inventor: JANETZKO HORST
IPC: B30B1/00
Filed: 1973-07-23
Abstract: The mechanical pressure generator is used for imparting pressure force to the punching, coining or deep drawing tools. The pressure force is increased progressively on the material to be worked. The roller and inclined plane combination overcomes the difficulty on using hydraulic cylinders directly as punching tool actuators where the piston will continue to move against the ends of the cylinder. The hydraulically actuated pair of rollers are pushed into a gap between two inclined planes. The lower inclines plane is connected to the vertically moving pressing tool. The rollers come into contact with the inclined planes and force the press tool downwards into the material to be pressed which rests on the table. Pressure is released on the material when the rollers connected to the ends of the pistons are returned and spring returns the tool to the rest position.
Patent DE-2338780-A1 (DE)
Title: Pneumatic variable-load spring for cam follower - comprises piston in cylinder with controlled air supply and air leak
Inventor: MAYTAG JOHN HARDY
IPC: F16H25/00
Filed: 1973-07-31
Abstract: The pneumatic spring exerts a varying force on the cam follower, thus maintaining contact with the cams at a pressure corresponding with the optimum demanded by the acceleration imparted by the cam. The cylinder contains a piston the first space, on one side of the piston, being in constant communication with a source of compressed air, the second space, on the other side, being connected to this source via a 3-way valve which either admits compressed air to, or exhausts that space. The piston carries an extension through the first space, whose profilated extremity slides in a bush as the piston moves, the profile and bush being so dimensioned that there is a variable air leak from the first space, as a function of piston position, into a third space permanently connected with the compressed air source.
Patent DE-2342837-A1 (DE)
Title: Door frame assembly attachment - consists of strips carrying base plate, interlocking cover pieces
Inventor: GROSS HERMANN
IPC: E06B1/60
Filed: 1973-08-24
Abstract: A prefabricated rapidly assembled door frame uses base plates which are fixed into the door soffit. The metal fixture strips are inserted into slits on each door cover piece and screwed onto the base plates. The screws used for fixing the fixture strips are encased in rubber sleeves, in order to prevent sound transmission through the wall. One cover piece is inserted into the other two cover pieces, so that they clamp tightly to the fixture and abutment piece. Grooves in two of the cover pieces are for sealing strips.
Patent DE-2343925-A1 (DE)
Title: Release mechanism for simultaneous camera functions - uses a pivot lever with two or more holding projections
Inventor: HACKENBERG HUBERT
IPC: G03B9/58
Filed: 1973-08-31
Abstract: The mechanism can be used to operate the camera shutter and flash firing system as well as other functions. A pivot lever is rotated about a spindle by the exposure release linkage. The pivot lever has a holding projection for each controlled function which retains the respective spring loaded elements. One or both of the spring loaded elements have cam shaped edges adjacent to the holding surfaces so that after release of the elements the cam surfaces tend to continue to rotate the pivot lever. The design allows the components to be mass produced without great precision and the mechanism to be assembled quickly without the necessity for fine adjustment.
Patent DE-2345471-A1 (DE)
Title: Electromagnetic relay with weather protected contacts - has moving contact in tongue shape inside coil former serving as sealed tube
Inventor: SCHMITT KARL-FRIEDRICH
IPC: H01H50/54
Filed: 1973-09-08
Abstract: The contact system of the electromagnetic relay is protected against atmospheric conditions and has the moving contact formed by a contact tongue of ferromagnetic material, extending through the inner space of a coil former, forming the sealing tube. The contact tongue one end is secured in the coil former body. Two fixed contacts are provided in the region of the contact tongue free end which is adjustable in relation to the fixed contacts by relative shifting the component, securing the contact tongue socket, transversely relative to the housing. The fixed contacts may be formed outside the coil and parallel to the same as magnetic yokes, being guided in the clamping region of the contact tongue. In such case the tongue socket support component has also supports for the relay magnets.
Patent DE-2351332-A1 (DE)
Title: Rotation symmetrical permanent magnet for magnetron - has active poles of pole rings and yoke elements of soft iron discs
Inventor: FRITZ KARL DR
IPC: H01J23/15
Filed: 1973-10-12
Abstract: The permanent magnet is arranged in a rotation symmetrical manner and the special shape of the yoke and pole shoes permits a division into two halves. The active poles consists of pole rings, and the connected yoke elements are formed by soft iron discs, or by an equivalent structure, with a central hole aligned with the inner diameter of the poles, without a ferromagnetically closed feedback for the magnetic flux. The radial and axial lengths of the magnet elements are such as to enable an individual magnetising of the pole ring and disc groups. One of the discs forms a third electrode of a double capacitor which short circuits and simultaneously cools the cathode leads of a magnetron against HF tapping.
Patent DE-2352324-A1 (DE)
Title: Storage arrangement for impulse profiles in automatic control procs - has shift register and network of AND-OR gates
Inventor: WIESENEWSKY KARL-HEINZ
IPC: G05B19/07
Filed: 1973-10-16
Abstract: The invention provides a means of storing impulse profiles for use in control processes e.g. in programmed controlling of switch gear and of differentiating between profiles which should and should not be stored. The store has a shift register which has one more place than the number of impulse profile strokes. It receives impulses from a continuous stroke impulse source an erase impulse source as required and a working impulse source. It has also a network consisting of a time unit, AND-units and OR-units. This network is constructed, depending on the structure of the impulse profiles to be stored, so that a typical signal pattern is built up at the earliest possible juncture in the shift register.
Patent DE-2353764-A1 (DE)
Title: Combined drawing and writing table - has support on lateral carrier tubes height-adjustable carried by rollers
Inventor: LEUTHAEUSSER HILMAR
IPC: A47B27/06
Filed: 1973-10-26
Abstract: Combined drawing and writing table has a panel which can be steplessly adjusted for height and inclination and is carried by a support which can be pivoted about a horizontal axis and which in turn is supported on 2 lateral carrier tubes passing through apertures of the table panel lying near 2 outer table legs. The tubes are mounted play-free or under prestress and height-adjustably in respective rollers, and are connected to the spring which equalises the wt. of the carrier tubes, support and drawing panel. The table is easily adjusted, and the adjustment parts are protected against dirt.
Patent DE-2411486-A1 (DE)
Title: Carpet sweeper with independently operated corner brushes - has epicyclic gearing allowing drive energy to be stored for subsequent use
IPC: A47L11/32
Filed: 1974-03-11
Abstract: The brushes of the carpet sweeper are connected to a caster by intermediate gearing which on one side is coupled to a driven shaft of the drive caster by a free wheel clutch which operates unilaterally, and on the other is connected to a rotary member which supports epicyclic wheels which engage simultaneously with the caster and a centrifugal mass mounted on the same axis. Thus when the carpet sweeper and casters are moved the carpet sweeper brush is driven accordingly and part of the drive energy is transferred by the epicyclic gear to the centrifugal mass where it is stored. When the drive casters are stationary the centrifugal mass continues to run owing to the energy stored therein and thus indirectly drives the intermediate gearing. Owing to the free wheel clutch this stored driving energy is transferred entirely to the brushes so that these can be actuated even when the casters are not been rotated.
Patent DE-2418135-A1 (DE)
Title: Radiator cover closure with excess pressure valve - flexible attachment unit fits into groove of excess pressure valve housing
Inventor: REUTTER HEINRICH
IPC: F01P11/02
Filed: 1974-04-13
Abstract: Radiator cover with excess pressure valve and threaded head cover. The threaded cover of the radiator closure has an inner thread which is connected to the excess pressure valve by a snap-in or fit-on connection. a flexible attachment element makes contact with the outer edge into a radial groove or into the cover thread, whilst the inner end of the excess pressure valve housing is held between the cover and the inner edge of the attachment element. The flexible attachment element fits into the outer circumferential groove of the excess pressure valve housing the outer diameter of which is smaller than the threads inner diameter.
Patent DE-2420141-A1 (DE)
Title: Consumable electrode furnace - for multiple ingot prodn
Inventor: LUCHOK JOHN
IPC: B22D23/10
Filed: 1974-04-25
Abstract: The furnace has a first mould section whose cross-sectional area is larger than that of the ingot mould or moulds which open into the first section. A pool of molten metal is formed under slag in the first mould section by fusing the tip of an electrode having a cross-section at least as large as the total cross-section of the moulds. The metal pool is maintained in a molten condition and no skull is permitted to form during the simultaneous fusing and casting operations. To prevent solidification at the interface between the first mould section and the ingot moulds, refractory sleeves are used to thermally insulate the interface.
Patent DE-2426301-A1 (DE)
Title: Alpha - (hydroxyheterocyclyl carboxamido) acetamido penicillins - active against Gram-negative bacteria including Pseudomonas
Inventor: TOBIKI HISAO
IPC: C07D499/00
Filed: 1974-05-29
Abstract: Penicillins of formula (I) and their salts are new: R = p-hydroxyphenyl, cyclohexadienyl, thienyl or isothiazolyl, or 1-4C alkyl). They are prepd. by reacting the appropriate heterocyclic acid, or a reactive deriv., with a 7-(alpha-aminoacetamido)penicillin. (I) are broad-spectrum antibiotics active against Gram negative and positive species including Pseudomonas.
Patent DE-2427154-A1 (DE)
Title: Line guide-ring for fishing rods - has cross-section with large radius of curvature and is compression-moulded or injection-moulded
Inventor: KUMMEROW WALTER
IPC: A01K87/04
Filed: 1974-06-04
Abstract: The line-guide ring consists of a ring joined to a sleeve by means of clamps or bridge-pieces. The sleeve is inserted over the fishing rod. On the same plane as the ring, the ring has the shape of a curved-sided triangle with rounded corners. The areas of the ring on both sides of the diameter passing through the axes of the ring, and rod, are the most subject to friction. The cross-section is here elliptic, or may be of another shape as long as there is a wide radius of curvature on the inside edge of the ring. Alternatively, the ring's cross-section may be the same over the whole circumference. The ring is injection-moulded or pressure die cast.
Patent DE-2435773-A1 (DE)
Title: Monitor for high-temperature heater - has oil as heat-carrying medium, and rapid reliable indication of faults
Inventor: ROTH ROLAND
IPC: F24D7/00
Filed: 1974-07-25
Abstract: Monitor for high-temp heater using oil as heat-carrying medium comprises a heating pipe with one or more flues for heating the oil, and in each heating pipe in an ascending pipe section (6) a float (7) which is driven by the current into a region of the pipe section in which is maintained a field controlled by the float and connected to an indicator, pref. an electric induction field. The field may be maintained by one or more induction coils (10) mounted one behind the other in the form of thermoelements. Alternatively the field may be a radiation field.
Patent DE-2440880-A1 (DE)
Title: 1-(Modified)carboxy-5,6,7,8-tetrahydro carbazoles - topical anti-inflammatories prepd. e.g. by Fischer synthesis from cyclohexanones and phenylhydrazines
Inventor: BIERE HELMUT DR
IPC: C07D209/88
Filed: 1974-08-23
Abstract: Novel tetahydrocarbazoles of formula (I) (R1 is CH2OH, alkanoyloxymethyl, tetrazolyl, CN, oximinocarbonyl, CONH2 or COOH (opt. as salts, esters or amides with physiologically tolerable bases, alcohols or amines) R2-5 are H, halo, lower alkyl or alkoxy or CF3; R6 and R7 are as R2 or together represent a 5- or 6-membered isocyclic ring; R8 is H or 1-8C hydrocarbyl; >=1 of R2 and R4-R8 must be other than H when R1 is free COOH) are prepd. e.g. by reacting an alpha-halocyclohexanone with an aniline deriv. (I) have strong anti-inflammatory activity, esp. when applied topically, and do not have the hormonal side-effects associated with the corticosteroids. They have low toxicity and appreciable topical antibacterial and antifungal action so are useful in treating e.g. allergies, eczema, neurodermatitis, burns and other skin diseases. Compsns. are conventional e.g. lotions or ointments contg. 0.005-5% (I). (I) are also inters. for other anti-inflammatory carbazole derivs. e.g. by dehydrogenation.
Patent DE-2445299-A1 (DE)
Title: Acid antibiotic salts with triaryl dye cations - active against fungi and bacteria
Inventor: KECK JOERN-MICHAEL DR DIPL CHE
IPC: C07D499/00
Filed: 1974-09-21
Abstract: Salts of acid antibiotics are of formula (I): (where E is a Gp. IV of V element, suitable cations are dye cations esp. those with X, Y and Z = H, OH, halo, alkyl, aryl, substd. sulphonic acid or amino gps., NO2, alkoxy, acyl CN or COOH; R1, R2 and R3 are suitable substits. esp. H, OH, halo, COOH, or -MOG; M = a Gp. V element; G and D are eg H, halo, alkyl, aryl, heterocyclyl, substd. amino or sulphonic acid gps., alkoxy, CN, acyl or COOH, the anions Am- are e.g. derived from substd. 6-APA, 7-ACA, or the stibophen or stibogluconate anions, phenolate anions of substd. tetracyclines or anions of substd. sulphonamides; m and n are not specifically defined). Both ions have antimicrobial activity; the cations against fungi and the anions against bacteria. (I) can thus be used to treat mixed infections. The more sparingly soluble (I) have good long-term activity.
Patent DE-2447447-A1 (DE)
Title: Oscillating flowmeter - has a frequency multiplying measuring and evaluating device
Inventor: ZAHLER ERICH DR ING
IPC: G01F1/20
Filed: 1974-10-04
Abstract: It comprises an oscillating element in the flowing medium, and a sensor with a pickup and a receiver for the oscillation frequency measurement. The pickup (5) is mounted on the oscillating element (2), and is in the latter rest state opposite to the stationary receiver (8, 9). When the element (2) oscillates, the pickups (5) deflects in two directions with respect to the receiver (8, 9). The sensor (6) is opposite to a pickup coil (7) which is wound round the core (8) of the stationary receiver.
Patent DE-2447502-A1 (DE)
Title: Electrical conduit element fixing system - is for a partition wall with hollow plug attachment device
Inventor: ZELFDE ADRIANUS BASTIAAN VAN T
IPC: H02G3/12
Filed: 1974-10-04
Abstract: The fixture system is for the support of electrical conductor lines to the partition wall (2) of a building. Attachment is made by a plug (9) carrying a U-section support channel (1). The ends of the plug penetrate the partition and are upset to form a head. Plugs are hollow of an elastic material and surround pegs (7) driven in from the support channel side. The electrical conduit is carried on the channel and retained by a coiled over strap with a fixing clip.
Patent DE-2452598-A1 (DE)
Title: Welding pipes to plates for heat-exchangers - or pressure vessels etc., using centering bush in the welded joint
Inventor: CLEMENS KURT ING GRAD
IPC: B23K33/00
Filed: 1974-11-06
Abstract: Process for joining pipes to pressure-guiding elements such as plates, pressure-vessels, collector-manifolds etc. by complete, gap-less welding of the junction. Both the plate and the end of the pipe are provided with lips and initially, the outer lip on the pipe is welded to the lip on the plate and a centering bush is then clamped in the end of the pipe before filling the joint with weld-metal and using a limit-piece to define the welded zone. The limit-piece is pref. a ceramic ring inserted in the centering bush, but instead of the ceramic ring a water-cooled mandrel may be used. Reliable welded joints are obtd., also when composite pipes are employed, i.e. corrosion-resistant welds can be made.
Patent DE-2453986-A1 (DE)
Title: Piston in cylinder comprising gas spring - with both piston ends connected to connecting rods of differing cross-sections
Inventor: HAHN GUENTHER
IPC: F16F9/02
Filed: 1974-11-14
Abstract: The gas spring has a piston in a cylinder, displaceable against the elastic effect of an enclosed gas quantity, and sealing against the cylinder wall. The piston (13) is connected at both ends to connecting rods (16, 17) sealed against the cylinder (11) and outwardly directed, the two connecting rods having cross-sectional surfaces of different sizes. The connecting rod (17) with the larger cross-sectional surface moves in a protective tube (12) which issues into the atmosphere, and which is connected to the cylinder (11) cylinder and protective tube being of one-piece construction. The protective tube (12) has a fixture device (2) which carries an end piece (3) for closure of the protective tube end.
Patent DE-2458494-A1 (DE)
Title: Ventilated seat for motor vehicles - has suction fan drawing air through seat squab which has webbing outer layer
Inventor: HERCHENROEDER KARL-FRIEDR
IPC: A47C7/74
Filed: 1974-12-04
Abstract: The purpose of the inflation of the seat is to provide ventilation for use in hot weather, thereby reducing the tendency for the drive to sweat. The ventilation is achieved by a suction fan extracting air through the seat squab. The seat consists of an non elastic covering webbing with a flexible plastic or rubber layer with hollow chambers on its underside. The effect of the non elastic webbing is to maintain the seat shape when the suction fan is operating. In cold weather the system can be adapted using warm air to provide heating to the seat.
Patent DE-2500739-A1 (DE)
Title: Road vehicle fitted with sleeping berths - has end walls which fold down to provide extended base when vehicle is stationary
Inventor: BOYMANNS KARL
IPC: B60P3/34
Filed: 1975-01-10
Abstract: The opposite facing end walls (12, 11) of the vehicle (10) fold down into the horizontal position to form the base and support for a number of bearer frames arranged vertically and spaced the breadth of the cabin from each other (15, 16). The side walls and roof are pivoted to the bearer frames which are provided with rollers to run in guide rails fixed to the vehicle floor. The cabins may be provided with windows and through access is gained by doorways in the walls of the cabin. The respective roof and wall plates are interchangeable and provided with weather proof sealing lips.
Patent DE-2508511-A1 (DE)
Title: Antenna array with variable radiation diagrams - has two or more dipoles fed with current of specific phase and amplitude
Inventor: IDSELIS MANFRED
IPC: H01Q25/00
Filed: 1975-02-27
Abstract: The antenna array is for transmitters which require a variable radiation patter, for example a circular field or an omnidirectional field by day and a directional field by night. The variable variation pattern is achieved by feeding two or more radiation coupled dipoles in the array with current of a specific phase and of a specific amplitude such that, allowing for the coupling between all of the aerial elements, the resultant field is practically circular. The array gives a more accurate field than a single radiator surrounded by appropriately tuned reflector or deflector dipoles, whilst requiring only little additional equipment.
Patent DE-2510217-A1 (DE)
Title: Change over and storage section of twin circuit conveyor - has constant spacing between drive and support track
Inventor: KOENIG GUENTHER
IPC: B61B10/02
Filed: 1975-03-08
Abstract: The load carrying arm of a suspension conveyor system is attached to a drive carriage which is located inside the tubular support track. The drive track which houses the drive chain is placed above the support track at a constant distance. When a change over from one drive chain to another one occurs, one chain track diverges whilst the next one converges. Retractable levers on the upper side of the carriages are the towing points for the drive chain hooks. A hinged plate on the trailing end of the drive carriage acts as a deflector for the brake lever on the leading end of the following carriage. When a queue of carriages is forming, this brake prevents them from rolling backwards.
Patent DE-2523571-A1 (DE)
Title: Cable drum for telephone cables - has radial ribs on side plates between which cable is wound onto drum body
Inventor: BLEYER GEORG
IPC: B65H75/14
Filed: 1975-05-28
Abstract: Each side plate of the cable drum has an outer surface which forms a flat plate with a central hole and a low flange. The ribs run radially from the flange to the central hole, interrupted by a projecting ring. Each side plate's inner side has an annular recess corresponding to the ring. Radial ribs are provided in this recess. This cable drum is light within itself yet is capable of bearing a high mechanical load. The smooth inner surfaces ensure that the cable is not damaged even at the high winding rates of which the drum is capable, namely, about 1, 000 r.p.m.