baber/WOPTO huggingface dataset:
Patent DE-2752104-A1 (DE)
Title: Opening channels in underground formation around borehole - by interrupted hydraulic fracturing and injection of abrasive in increasing concn.
Inventor: KIEL OTHAR MEADE
IPC: E21B43/267
Filed: 1977-11-22
Abstract: A formation surrounding an underground boring is treated by (1) hydraulic fracturing by injection of a liquid at a rate and a pressure to develop the fracture, stopping the injection, and repeating the injection, followed by (2) injection of a supplementary liquid contg. abrasive particles; the particles are introduced periodically, first at a predetermined concn. and then at a higher concn. The boring is flushed with a liquid at least after the injection of the abrasive material. A low-viscosity fluid, esp. water, is used for the fracturing, water being cheap and safe. Low-viscosity fluids enter the formation laterally, rather than vertically. Movement through the fracture is greatly increased by the periodical injection of the abrasive. A permeability of 1,000,000 millidarcy can be achieved even in soft formation. The process is esp. useful in wells which contain a very mobile solid which tends to block the fractures; this solid is removed by the low-viscosity fluid.
Patent DE-2802721-A1 (DE)
Title: Pusher type furnace - with sectional extraction device between carrier rails
Inventor: BRAUN EGON
IPC: F27B9/38
Filed: 1978-01-23
Abstract: A pusher-type conveyor furnace has the pusher coupled to a sectional retraction system. This consists of several lengths of members whic can be coupled together and it into the gap between the carrier rails. The last number is fitted with a bracket by which a workpiece can be retracted. This facilitates the adjustment of the last but one workpiece after the discharge of the last one, and also a complete discharge of the furnace in case of a stoppage.
Patent DE-2804406-A1 (DE)
Title: Stackable cardboard container construction - consists of box with stiffening corner pieces holding top flaps against side walls
Inventor: BEYER GUENTER
IPC: B65D5/00
Filed: 1978-02-02
Abstract: The stackable container has upright walls extending from the bottom so as to form a top loading opening. There are support and centering faces for the container above. The container consists of a cardboard packing box (12) with top flaps (13) folded over so that the edges formed by the folds (14) accommodate at each corner a straddling and stiffening angle-piece (16). This holds two adjacent top flaps against their respective sidewalls (18) and incorporates the centering (19) and support (21) faces. The top flaps can be folded inside the box or outside it.
Patent DE-2806602-A1 (DE)
Title: Solar energy collector with reservoirs above and below - operates at night by convection cooling lower water store
Inventor: GRUNDMANN EDGARD ING GRAD
IPC: F24S90/00
Filed: 1978-02-16
Abstract: An installation which can be used during the night and in the absence of the sun's radiation, today, has a solar radiation collector through which the heat transporting medium, e.g. water, flows under gravity. There are two reservoirs, one for storing heat, higher than and the other, a cold store, lower than the collector. The collector has an upper and a lower connection and the reservoirs are joined to these in parallel with upper and lower fittings. In addition the reservoirs may be equipped with heat exchangers. During the day only the energy content of the hot water tank is utilised. During the night heat is transferred from the hot water tank by convection and radiation so that when the temp. has fallen to below that in the cold water tank, gravity effects promote a circulation of the water.
Patent DE-2807863-A1 (DE)
Title: Vibrator actuated by pressure fluid - has elastic collar which oscillates to impart vibrations to working platform
Inventor: MUCHIN SCHORES G
IPC: B65G27/22
Filed: 1978-02-23
Abstract: Vibrator actuated by a pressure fluid for imparting oscillations to a working platform carrying material being handled comprises a stationary base on which a closed -contour elastic collar is mounted on a side facing the working platform so as to adjoin it. A working chamber defined by the base and the collar communicates with a source of fluid pressure which makes the collar oscillate and so imparts vibrating motion to the platform. The collar has an outlet with an elastic sealing lip which when the collar begins deflecting from its initial stationary posn. is tightly pressed against the base or the working platform. At the end of the collar deflection the lip difines a passageway by which the working chamber communicated with the surrounding atmos. The effective area of the working chamber which acts upon the working platform can be widely increased to provide a directly proportional increase in the vibrator disturbing force imparted to the platform.
Patent DE-2809810-A1 (DE)
Title: Railway car pneumatic braking system - includes valve controlled by air distributor and electro-pneumatic communicating with compressed air line
Inventor: BAZILEVITSCH GENNADIJ S
IPC: B60T8/18
Filed: 1978-03-07
Abstract: The valve mechanism communicates with the compressed air line via an auxiliary receiver and has two interconnected diaphragms of different areas spaced apart from each other. The diaphragms are also connected to the movable member of the valve mechanism during application of brakes and form chambers with the casing. One chamber defined-by the greater diaphragm communicates with the pneumatic air distributor, and the other chamber, is defined by the smaller diaphragm, communicates with the electropneumatic valve connected to the auxiliary receiver. This construction ensures reliable braking of both empty and loaded train.
Patent DE-2816452-A1 (DE)
Title: Vehicle free-piston engine-pump unit - has high and low pressure accumulators linked to pumping chambers of pistons linked to free piston
Inventor: HEINTZ RICHARD P
IPC: F02B71/04
Filed: 1978-04-15
Abstract: The hybrid propulsion system is partic. for a vehicle, having a free piston type engine-pump unit connected to a working fluid circuit for controlling pressurisation of a working fluid. The fluid in turn drives a hydraulic motor interconnected to the vehicle wheels. The motor-pump unit includes a free piston assembly having a pair of fixedly connected power pistons, each of which has a pump piston fixed to it. The fluid system includes high and low pressure accumulators in communication with pumping chambers associated with the pump pistons. The power pistons are used for driving the pump pistons to pressurise the working fluid when self-sustained operation of the engine-pump unit is desired. The flow of working fluid to the pumping chambers can be reversed during startup of the engine so that the high pressure fluid is used for driving the free piston assembly until it is reciprocated at a rate rapidly enough to permit self-sustained reciprocation.
Patent DE-2817826-A1 (DE)
Title: Strain gauge for aircraft structure - uses programmed logic to monitor strain in relation to maximum permissible stress
Inventor: HILLING BERNHARD
IPC: B64D45/00
Filed: 1978-04-24
Abstract: The strain gauge for aircraft sections, uses a support strip (12) set across the relevant seam and fitted with two strain monitor pads (13, 14), one in each direction. A solid state processing circuit and a programmable control ensure that the distortion of the seam is monitored over the entire strain range. Maximum strains can be programmed into the control, related to the life duration. The system gives prior warning of structural failures, before any damage occurs.
Patent DE-2818529-A1 (DE)
Title: Automatic tuning of TV or radio receiver - has oscillator output digitally compared with reference to provide adjustment of frequency
Inventor: VIGNAU RALPH V
IPC: H03J5/02
Filed: 1978-04-27
Abstract: A fully automatic timing system for television or radio receivers is based upon a timing-remote-digital(TRD) technique. The output of the timing oscillator (1) is divided by a ratio of 2,048 over two stages (4, 6) and changes the state of an up-counter (18) to provide a measured value for comparison (14) with the required frequency provided by a ROM (16). An arithmetic unit (15) provides a signal difference that is converted by a D/A (10) to control the oscillator (1) to lock onto the required station.
Patent DE-2821281-A1 (DE)
Title: Alarm and entry prevention system for safe - has explosive charges within safe walls responding to heat or explosions
Inventor: MOLENA FRANCESCO
IPC: E05G1/10
Filed: 1978-05-16
Abstract: On the inner walls of the safe to be protected are arranged explosive charges. The latter are arranged at positions where it is anticipated attempts at breaking in will be made. Such an explosive charge is initiated in case of applying of heat or explosives externally. The noise caused by these warning explosive charges will generate alarm signals and deter the intruders. Pref. the explosive charges are placed in zones isolated from each other. The protection system can also be extended to the corresponding access doors.
Patent DE-2828429-A1 (DE)
Title: Heat conducting measurement cell for gas analysis - uses two hot wires placed in same gas atmosphere and separately assigned to measurement and compensation system
Inventor: DAMER UDO
IPC: G01N27/18
Filed: 1978-06-28
Abstract: The heat conductance measurements are made at low absolute pressures, lower than 0.1 bar. Two hot wires (1, 2) are exposed to the same test gas atmosphere. The hot wire (1) belongs to the measurement system, and the wire (2) to a compensation system. Geometry of the wires (1, 2) themselves and/or their distances to the inner wall of the measurement cell (7) are different. The ratio of heating powers of the two wires is so adjusted, that the specific heat emission from the wire surfaces is equal.
Patent DE-2831721-A1 (DE)
Title: Phosgene-free prepn. of poly:isocyanate - by thermal decomposition of urea to cyanuric acid which is decomposed to isocyanic acid, which is esterified to poly:isocyanate
Inventor: LUEDKE JOSEF DR
IPC: C07C263/06
Filed: 1978-07-19
Abstract: The phosgene-free prepn. of aromatic and/or aliphatic polyisocyanates from urea, by esterification of free isocyanic acid with polyalcohols, phenols, cresols, dicarboxylic acids, aldehydes and organic bases, in the presence of suitable inhibitors, comprises prepg. the isocyanic acid from urea, via isocyanuric acid and ammonia, and then esterifying the isocyanic acid to an organic polyisocyanate by reaction with suitable cpds., in the presence of inhibitors. Polyisocyanates are used in the plastics industry, and in the pharmaceutical and dyestuffs industry. The process avoids the problems of previus phosgene-free processes, in which isocyanate cpds. formed reacted immediately with the water resulting from esterification, to give carbamic acid derivs., which then formed prim. amines and carbonic acid.
Patent DE-2833584-A1 (DE)
Title: Bleaching compsn. contg. peroxide, heterocyclic amide - and chelating acid, causes no discolouration with dyed or printed textiles
Inventor: YAGI KOUICHI
IPC: C11D7/54
Filed: 1978-07-31
Abstract: Bleaching compsn. comprises (a) 5-99 wt.% inorganic perioxide which provides H2O2 in aq. soln., (b) 0.01-10 wt.% of an amide of formula (I) or of dimethylhlyoxime (II) or its water-soluble salts; and 0.001-3 wt.% of an aminocarboxylic acid (III) of coordination no. >6 or its water-soluble salts. In the formula, R1 is H or 1-3C alkyl; Z completes as 5- or 6-membered heterocycle opt. with a condensed ring. R2=H or opt. substd. 1-10C alkyl, phenyl, pyridyl or pyrrolidonyl. R3=H, halo or opt. substd. alkyl, phenyl, alkoxy, phenoxy, amino, acyloxy, carbanoyl or acyl; and R3 + R4 can together complete benzo. R4 is as R3 or R5Y; R5 = 1-6C alkylene or alkylidene, or phenylene; Y is the residue left after removing R4 from cpd. (I). Esp. pref. compsns. comprise 40-95 wt.% (a); 0.5-3 wt.% (b) and 0.05-0.5 wt.% (c). The compsns. can be used, even at relatively high temp. (50-80 degrees C), to bleach dyed or printed materials without decolourisation or dilution of the colour. Materials treated with metallised dyes, metal salts or metal-contg. fixing agents can be safely bleached.
Patent DE-2836399-A1 (DE)
Title: Double row roller bearing bolting cage - has two independent rings for holding rolling cylinders with central bolts
Inventor: SHIMIZU SHUNSUKE
IPC: F16C33/48
Filed: 1978-08-19
Abstract: The bolting cage for self adjusting double row bearing has inner rings between barrel type roller rows for holding bolts. Each roll has axial bore for central holding bolt. The rows of rolls are able to roll independently. Between the rows of rolls are placed two separate inner cage rings (30, 40). Each of these rings has tapped holes for holding hollow roller central spindles (70) and a ring with attached rollers is able to rotate independently of the other, similar roller assembly. A ring is built up of a split flanged ring and an integral flat ring.
Patent DE-2837591-A1 (DE)
Title: Ventilator for greenhouse with flexible cover - has tensioning cables operated by winding shaft supported in rings on frame arches to raise and lower side sheets
IPC: A01G9/24
Filed: 1978-08-29
Abstract: The roof sheet lies on arc-shaped roof sections and vertical side wall sections of tubular frames. It reaches to the ground and is held on the frames by tension cables, these being connected to a tensioner which extends within the greenhouse. The tensioner is a winding shaft (24) arranged in the region of the spacer at the top end of the side. The shaft is supported in rings (30) fixed to the inside of the frame (10). The inner ends of the tension cable (18) are fixed to the winding shaft.
Patent DE-2848406-A1 (DE)
Title: Hydraulic walking mine support guide rods tunnel cleaner - is attached to guide rods, pref. comprising cleaning block on each
Inventor: ZYLKA RICHARD
IPC: E21D23/04
Filed: 1978-11-08
Abstract: A pair of guide rods have a walking cylinder hinged between a connecting traverse, near the rods rear ends, and the bare frame of the walking support, of the hydraulic type used in mines. A cleaning device is moved through the walking structure tunnel which houses the rods as the cylinder thrusts in and out. This cleaning device (28) is attached to the guiding rods (17), and pref. consists of a number of block-type cleaning organs fastened to them, each stroking only part of the tunnel (20) width. One may be attached to each rod, and they may be mutually offset lengthways.
Patent DE-2849543-A1 (DE)
Title: Optical and electrical coupling for laser therapy instrument - allowing automatic disconnection of laser when instrument handpiece is removed by using electrical contacts in socket bores
Inventor: KROY WALTER DIPL PHYS DR
IPC: G02B6/38
Filed: 1978-11-15
Abstract: The coupling comprises cooperating plug and socket halves, screwed together, with respective electrical contact elements and aligned central bores. The current line in the socket half is connected to a cut-out relay within the interior of the main instrument, operated when the coupling is released. The relay causes the laser to be disconnected, e.g. during adjustment or exchange of the handpiece of the instrument. The plug half may contain a dispersion lens and a convergence lens, receiving light from the end face of an optical fibre conductor inserted in the socket half, and supplying it to a detector and a display for the setting adjustment.
Patent DE-2901761-A1 (DE)
Title: Push=pull power converter circuit - has transformer bridge and alternately closed switching bridge reducing voltage loading
Inventor: PIVIT ERICH DR ING
IPC: H02M3/337
Filed: 1979-01-18
Abstract: A push-pull power converter circuit contains a transformer (Tr) whose secondary coil drives a rectifier, filter, and load. Each primary coil (W1) half is connected in a side branch of a bridge circuit with one of two alternately closed switches (S1, S2) driven by a pulse width regulator (PBR). The diagonal bridge arm contains a direct voltage source (Uo) and choke (U) connected in series between the switch junction and primary coil centre tapping. Its blocking voltage loading and switching transistor power loss are essentially reduced compared to conventional circuits. It produces a continuous output current and requires relatively small additional component cost. An additional bridge circuit is formed with its side branches each contg. a primary coil half and one of two further alternately closed switches (S1', S2') driven by (PBR). The diagonal arm contains a further choke (L2) magnetically coupled to the first choke (L1).
Patent DE-2909754-A1 (DE)
Title: Benzofuranyl:oxy or benzothienyl:oxy substd. alkanoic acid derivs. - with hypolipidaemic activity, useful as anti-atherosclerosis agents
Inventor: GRELL WOLFGANG DIPL CHEM DR
IPC: C07D333/54
Filed: 1979-03-13
Abstract: Heterocycles of formula (I) and where appropriate their pharmaceutically tolerable salts with organic and inorganic bases and acids are new: R1 = 1-7C opt. branched alkyl, 7-9C aralkyl, phenyl (opt. substd. by 1 or 2 of halo, CH3, OH, alkoxy, benzyloxy, NH2, NO2, carboxy, acylamino and/or alkoxycarbonyl; alkoxy and acyl have 1-3C, pyridyl, thienyl or biphenylyl. R2 = 1-14C opt. branched alkyl, phenyl (opt. substd. by halo), 7-9C aralkyl or pyridyl. R3 = H or 1-8C opt. branched alkyl. R4 and R5 = H or 1-3C alkyl. R6 = H or halo. X is O or S. n = 0-2. They are prepd. e.g. by reacting R3O.CO.C(R4R5).(CH2)nHal with the appropriate phenol. (I) reduce triglyceride, cholesterol and beta-lipoprotein levels and are more active than known benzofuran derivs. Esp. they reduce very low - and low-density lipids but enhance high density lipids so are useful as anti-atherosclerosis agents. (I) also have hypoglycaemic and thrombocyte-aggregation inhibiting activities. All cpds. bested had acute oral LD50 in mice 1 g/kg. and the usual dose is 15-90 mg/day.
Patent DE-2912185-A1 (DE)
Title: Vehicle safety belt system - has reversing edges on buckle and guide fitting on ribs shearing under dangerous load
Inventor: NILSSON THOMAS
IPC: A44B11/04
Filed: 1979-03-28
Abstract: The vehicle safety belt system has a belt running from a rewinding mechanism through a guide fitting, fixed to the vehicle, and through a detachable part of a buckle to an anchor point on the vehicle. The guide fitting and the buckle part have slots for the belt and edges round which it runs and which absorb tension loads. These edges (6) on the buckle (4) and/or fitting are formed on ribs (7) shearing under a load occurring in dangerous conditions and the ribs are separated by openings (10) from a reserve edge (11) underneath.
Patent DE-2912987-A1 (DE)
Title: Turning and gluing machine for footwear mfr. - has swivel applicator and support adapting to right and left foot shoes
Inventor: LOEFFLER TILO
IPC: A43D23/02
Filed: 1979-03-31
Abstract: The last clamping device includes a support (3) which places the last right angles to the sole and an adhesive applicator pad (9) which is roughly the same shape as the outline of sole. The pad and support can be swivelled together about an axis (11) which lies at right angles to the sole of the last and passes through the toe cap area (2). The position of the last support and the adhesive applicator is adapted to the position of the sole surface and is swivelled left for left foot shoes and right for the right ones, ensuring the hot adhesive correct application in each case.
Patent DE-2913689-A1 (DE)
Title: Roller track lift platform for raised paint drying tunnel - accommodates car bodies and has swivel shaft coupling low level motor to roller drive
Inventor: GASTGEB RUDOLF ING GRAD
IPC: B62D65/02
Filed: 1979-04-05
Abstract: The lift platform (6) with a roller track (7) is arranged at the lower end of the charging (3) and/or discharging (4) shaft of a high-temp. paint drying tunnel (1). The tunnel may be used for car bodies (2). The drive motor (11) for the roller track (7) is arranged in the lower area of the shaft, (3, 4) and is coupled to the drive shaft for the rollers via an intermediate shaft (10) which automatically accommodates the heights difference during the vertical movement of the platform. The shaft (10) may be coupled to the roller drive shaft via bevel gears. It may carry the motor (11) and be suspended on a swivel arm.
Patent DE-2919219-A1 (DE)
Title: Engine noise simulator for model cars or boats - uses induced voltage produced by DC motor suitably filtered
Inventor: HAAS KURT
IPC: A63H17/34
Filed: 1979-05-12
Abstract: An i.c engine noise simulator is for use in or with a model vehicle or boat without the necessity of using complex synthesising circuits. It is achieved by using a d.c motor as a noise source. The induced volt. ripple at the armature terminals of a permanent magnet d.c motor is filtered, typically by a double T-filter, to obtain those frequencies which characterise i.c engine exhaust noise. An active double T-filter may be used for a second stage, with a final operational amplifier to provide gain and isolation. The arrangement can be built into a model vehicle or into a stationary simulator. In the latter case several noise channels can be connected in parallel at the amplifier output to prod the reqd. sound more faithfully.
Patent DE-2922781-A1 (DE)
Title: Self closing water valve - has flat disc with central boss guided in valve seat and unloading chamber
Inventor: STRANGFELD REINER DIPL ING
IPC: F16K21/12
Filed: 1979-06-05
Abstract: The self-closing valve has a plunger working against a seat and forming a seal in the pressure cylinder in which it works, and in which it encloses an unloading chamber. A further valve with actuating member is mounted between the outlet and the unloading chamber. The plunger is formed by a flat disc (6) with a central boss (7) guiding it in the bore (4) of the valve seat (5) above it. On its boss side towards the seat it supports a sealing sleeve (8) both forming the valve seal and that for the unloading chamber below, the plunger being also guided an the latter chamber.
Patent DE-2924173-A1 (DE)
Title: Respiration apparatus control system - has transmission unit with time delay connected to exhalation valve and control unit
Inventor: JEHMLICH KLAUS DR
IPC: A61M16/00
Filed: 1979-06-15
Abstract: The control system is for respiration apparatus, with gas preparation and parameter preselection. Pressure equalisation is by a control unit, consisting on the one hand of inhalation valve, flow valve, injector and pressure restriction valves, connected in series, and on the other of volume meter, direction valve and exhalation valve, also in series, and connected by respiration hoses to the patient supply. The exhalation passage incorporates a transmission unit with time delay connected to the exhalation valve and also to the control unit.
Patent DE-2926403-A1 (DE)
Title: Thyristor or diode cooling device - has glass fibre reinforced plastics springs to clamp semiconductor device between heat dissipating blocks
Inventor: BLOCK HARRY
IPC: H01L21/52
Filed: 1979-06-29
Abstract: The cooling device for thyristors or diodes uses a lower member (2) and upper member (3), between which the semiconductor device (1) can be clamped. The members can be water cooled. The upper element has a domed top (7) against which is held a leaf spring (6) mounted between two vertical studs (4,5) projecting upwards from the lower member. Tensioning nuts (8,9) are fitted on the studs. The leaf spring is made of a glass fibre reinforced plastics material. In an alternative a lower air cooled block carries studs enclosed by insulating sleeves and carrying a horizontal yoke with a central rod held down against a central pressure pad above the semiconductor element. This uses dished spring washers made of glass fibre reinforced plastics material.