baber/WOPTO huggingface dataset:
Patent DE-2924307-A1 (DE)
Title: Heat recuperator for central heating cycle - has motor driven bladed rotor compressing liquid circulated through heat exchanger closed cycle
Inventor: FRIEDRICH HANS GUENTER ING GRA
IPC: F28F13/12
Filed: 1979-06-15
Abstract: The heat recuperation system for a central heating installation includes a rotary heat exchanger in an closed cycle connected with the heating units. The closed cycle includes a heat exchanger for an incoming air supply and another heat exchanger for discharged air. Between them is a tank and expansion vessel for liquid connected by a control valve to the air supply heat exchanger. The rotary heat exchanger contains a rotor with five radial blades which circulate a cold heat exchange liquid around the interior, in contact with the hot water jacket through which the supply passes. The rise in temp. causes an increase in pressure and vaporisation of the heat exchanger liquid which is circulated in the closed cycle and expanded through the valve at the air supply heat exchanger.
Patent DE-2928785-A1 (DE)
Title: Modular force application device - has pressure transmitting plate movable by expandable hose to reciprocate piston rods extending through bushings
Inventor: SPENGLER ERNST MAXIMILIAN
IPC: F15B15/24
Filed: 1979-07-17
Abstract: A force applicator (1) includes a pressure expandable hose section (3) closed at its ends, a reaction bar (2) against which the hose rest, and a pressure transmitting plate (10) moving in response to an expansion of the hose. These are held in an operative position relative to one another by a modular frame section 4, 5, 6). The frame also holds guide bushings (11, 12) and a reset spring (21) for restoring the hose section to a starting position when no pressure is applied inside the hose. Piston rods (15, 16) extend through the guide bushings and are are operatively connected to the pressure transmitting plate.
Patent DE-2928812-A1 (DE)
Title: Non-disturbance tone for telephone - is sent to caller when key at receiving phone is pressed which disconnects bell
Inventor: DIRR JOSEF ING GRAD
IPC: H04M1/663
Filed: 1979-07-17
Abstract: A subscriber wishing not to be disturbed by the phone can press a key which disconnects the bell. Then if a call arrives, it is rectified to power electronic circuits, and an opto-coupler delivers one pulse per cycle. The first 3 pulses are counted to distinguish ringing from interference, then a gate opens. A time delay, reset by each pulse, detects the end of the ring and, via the gate, triggers an audio oscillator. All circuits then reset and the sequence repeats on the next ring. The oscillator is coupled to the line by a transformer and sends a characteristic 'don't disturb' tone back to the caller after each ring.
Patent DE-2929813-A1 (DE)
Inventor: AFFONSO ALVARO PROF DR
IPC: C02F1/76
Filed: 1979-07-23
Abstract: A device for the sterilization of fluids wherein a sterilizing gas is chemically generated in-situ within a liquid-impermeable container, which container is in contact with the fluid to be sterilized. The container is constructed at least in part of a solid, non-porous, liquid-impermeable synthetic plastic barrier, which barrier permits controlled diffusion of the sterilizing gas therethrough while preventing passage therethrough of impurities and the residue of the gas generation reaction.
Patent DE-2935368-A1 (DE)
Title: Treadle drive for horizontal shaft - has chain wheels with freewheel couplings on shaft driven via spring loaded chains fixed to pedals
Inventor: DOLDERER KARL
IPC: B62M1/24
Filed: 1979-09-01
Abstract: The treadle drive is intended for rotating a horizontal shaft (1). The shaft carries two chain wheels (3) which are coupled to the shaft via one-way freewheel couplings (2) acting in the same direction of rotation. A chain (4) engages each chain wheel and has one end fixed to a spring (9), which is anchored at a fixed point, whilst its other end is secured to one of the treadle pedals (6). Each pedal may be a one-armed lever which is pivoted (7) at one end whilst the other end carries a foot rest (8), the chain being secured between pivot (7) and rest (8).
Patent DE-2941364-A1 (DE)
Inventor: SCHOPP TRAUGOTT
IPC: E04D13/15
Filed: 1979-10-12
Abstract: The expansion-joint strip (10) for bridging over a joint between profiles on a flat roof, comprising a synthetic-rubber central strip (12) and planar border strips (11), has a zero point (17) of movement. In the event of temperature changes, bulges in the expansion-joint strip (10) are to be avoided and, at the same time, the danger of the roofing skin breaking up is to be eliminated. For this purpose, the invention provides, in the region of the zero point (17) of movement, a vulcanised connection which is formed, from synthetic rubber, with a reinforcing insert (19) and the properties of which are largely adapted to those of the roof covering. <IMAGE>
Patent DE-2946299-A1 (DE)
Title: Foundry sand reconditioning - by pneumatic sepn. producing residue of heavy and coarse particles
Inventor: OSENBERG KLAUS-DIETER
IPC: B22C5/00
Filed: 1979-11-16
Abstract: Heavy prods., e.g. fine metal particles and coarse prods., e.g. sand and ceramic clods, are sepd. from a stream of bulk materials, e.g. spent foundry sand, in a casing in which an inlet slot along one side is sepd. from an overflow edge by a partition. Perforated compressed air feed tubes in the bed below this edge produce a fluidised layer and effect a pneumatic sepn. of the reconditioned sand from the heavy and coarse prods. This removes both metal particles and sand clods from the reconditioned foundry sand.
Patent DE-3003158-A1 (DE)
Inventor: VOEHRINGER GERHARD FRIEDRICH
IPC: B05B14/48
Filed: 1980-01-30
Abstract: A booth forming a spraying chamber for workpieces to be coated with powder particles has a substantially fully open front side, giving access to an electrostatic spray gun, and a substantially fully open rear side adjoining a housing of a detachable powder-collecting unit which is open toward the chamber while being separated therefrom by an apertured screen. Tubular filter elements in the housing of the powder-collecting unit, having air-permeable peripheral surfaces, communicate with the suction end of a blower in an overlying clean-air unit, thereby giving rise to an air stream which passes generally horizontally through the chamber from its front side to its rear side and entrains particles discharged by the spray gun. Particles bypassing the workpiece to be coated may traverse the apertured screen and cling to the surfaces of the filter elements from which they may be intermittently dislodged by an air blast directed into these elements from the clean-air unit. The dislodged particles fall into a recovery compartment of the housing which lies below the level of the chamber bottom, this bottom sloping down toward the recovery compartment whereby particles dropping to the chamber floor can slide directly into that compartment underneath the apertured screen. A flexible conduit connects the recovery compartment with the spray gun for recirculation of the particles which, after passing through a strainer, are reconditioned by a fluidized bed in the recovery compartment. Cutouts in the sidewalls and a slot in the roof of the booth enable the introduction and withdrawal of workpieces suspended from above.
Patent DE-3009406-A1 (DE)
Title: Thin cable cord - contg. longitudinal glass fibres cemented to one another with moisture-hardenable one-component pref. cyano-acrylate adhesive
Inventor: RAUTENBERG PETER ING GRAD
IPC: G02B6/44
Filed: 1980-03-12
Abstract: Cables, esp. light conductor cables, contain tension-absorbing cords having dia. less than 2.5 mm and consisting of longitudinally flowing glass fibres cemented to one another. The glass fibre adhesive is a moisture-hardenable one-component adhesive having processing condition viscosity less than 1500 (less than 200) mPa.sec. Adhesive proportion in cord is less than 30 vol.%. The cables combine good bending properties with resistance to tension and strain. Cord heat expansion coeffts. are low, i.e. near to those of steel. Cable thickness can be reduced. The cords can be mfd. quickly in opt. length. Before cementing, the glass fibres can be coated with an adhesion-improver, esp. a Cr- or silane adhesion improver when using a cyanoacrylate-based adhesive. Several cemented cords are pref. bonded to form a strand.
Patent DE-3014589-A1 (DE)
Title: Solid fuel furnace with gas burner circuit for easy ignition - has safety system cutting out gas supply operated by ionisation, thermo-electrical or mechanical unit
Inventor: RAHE MARTIN
IPC: F24B1/191
Filed: 1980-04-16
Abstract: A solid fuel open furnace is such that the fuel can easily be ignited. It can be used on wood burning unit etc. It contains a circuit for igniting the fuel. The igniting circuit contains a gas burner. The gas burner is made with an ignition safety system that shuts off the gas supply when the gas flame has been extinguished. It can operate on the ionisation, thermo-electrical or thermo-mechanical principle. It contains a sensor recognising unburnt gases.
Patent DE-3015319-A1 (DE)
Title: Mine gallery face debris removal machine - has shovel and swivelling conveyor belt on tracks below working platform
IPC: E21D9/12
Filed: 1980-04-22
Abstract: The loose lumps of rock and waste are removed from the face area in an underground mine work by a clearing installation, which also provides transfer to conveyors etc. A working platform moving forward on rails is sited for fitting close against the face driving front, dividing the area vertically. A bottom device, on continuous tracks (3,6) is inserted below the platform (2). It is fitted with a raisable and lowerable shovel (5), and an adjoining low-site continuous conveyor (6) between its tracks with raisable and lowerable discharge end. This is adjacent to a conveyor belt (8) assembly with similarly movable and swivelling discharge position for material transfer.
Patent DE-3022058-A1 (DE)
Title: Supervising remote controlled switching of load - by alternating signal which if disturbed causes trip using auxiliary and main relays
Inventor: BOSCHULTE RAINER ING GRAD
IPC: G08C25/00
Filed: 1980-06-12
Abstract: The digital process instructions are sent out from a central controller to a local receiver (AS) and processed in logic circuits (SW,JT1,JT2). The process switching, typically control of the power supply, is carried out by two relays (A,B). A start instruction (a) energises the first relay (A) via a power amplifier (VA). Its contacts close, and one (A1) connects the coil of the main relay (B) to a charged capacitor (CB) with sufficient energy storage to cause the relay to pick up. The first relay (A) drops off after a short time delay. Contacts on the main relay connect the coil to a power amplifier (VB). Alternating digital signals (y,z) are scanned by the logic, and, if present, give a constant output from the amplifier (VB). The relay (B) holds on and the supply to the process remains closed (A4,B4). Should the data transmission be interrupted, disturbed, or a switch off instruction be given then the power amplifier (VB) turns off, the relay (B) drops out and the supply is opened. If the alternating signal returns the relays (A,B) remain de-energised until the necessary start instruction (a) is again given.
Patent DE-3028165-A1 (DE)
Title: Prodn. of low-calorie beer - by fermentation in presence of rice pullulanase to reduce dextrin content
Inventor: LINE WILLIAM F
IPC: C12C12/02
Filed: 1980-07-25
Abstract: Prodn is carried out by fermenting brewer's wort with yeast in the presence of rice pullulanase (I) in an amt sufficient to reduce the residual dextrin content by cleaving the dextrin alpha-1,6 linkages to form alpha-1,4 dextrins, which are converted by 1,4-carbohydrases into fermentable sugars which are fermented by the yeast to alcohol. Method of extracting (I) from rice comprises treating the rice with an aq. buffer (pH6) at 0-60 degC. (I)is more effective than glucoamylase in debranching high-molecular-wt. dextrins, allowing more rapid fermentation.
Patent DE-3042299-A1 (DE)
Title: Coating fabric with polyurethane-forming compsn. - after applying thin polyurethane reaction-accelerator layer to prevent undesired penetration through fabric
Inventor: TIMM THIES DIPL CHEM DR
IPC: D06N3/14
Filed: 1980-11-08
Abstract: Fabrics are finished with a thin polyurethane reaction-accelerator layer before coating with highly fluid reacting polyurethane elastomer-forming compsns. Pref. the accelerator is applied as a soln. by spreading, spraying or immersion. The solvents can be aliphatic- and/or aromatic hydrocarbons or halogenated hydrocarbons. Soln. concn. can be 1-30%. Accelerator coating quantity can be 5-20 sq.m. The accelerator layer can contain 10-30 wt.% adhesive agents. Only one fabric surface need be coated with the accelerator. Polyurethane coating compsn. penetration through fabric, causing an undesired coating of reverse side, is prevented without lowering adhesiveness.
Patent DE-3043325-A1 (DE)
Title: Inhalation device - has separate but attachable casings for pressurised air generator and atomiser with one carrying handle
IPC: A61M15/00
Filed: 1980-11-17
Abstract: An inhalation appts. comprises pressurised air generator and atomiser, opt. other additional components. The atomiser and/or additional devices are housed in an independent housing, which is independent from the main housing but can be detachably fixed to one end of it. The auxiliary housing is pref. in the form of a box with flat walls, one of which can hinge down to reveal the atomiser. The housings are pref. fitted together without the use of tools, esp. by locking strips etc. The handle may contain a cavity for storing cleaning brushes, wires and other equipment. With this arrangement, with the atomiser housed in a separate container, the risk of infection of the atomiser by dust and bacteria is greatly reduced.
Patent DE-3044129-A1 (DE)
Title: DC controller with main and turn-off thyristors - coupled into specified thyristor circuit, to reverse energy flow
Inventor: STILL LUDWIG DIPL ING
IPC: H02M3/135
Filed: 1980-11-24
Abstract: The d.c. controller has a turn-on thyristor (TLH) turning on a main thyristor (TH) which is shunted by a commutating capacitor (CK). A third thyristor (TU) is connected in series with an inductor across the commutating capacitor. The third thyristor is coupled via diode (DL) to one pole of the controller. This pole is coupled via a braking diode (DB) to one end of the main thyristor. A coasting diode (DF) shunts the controller's poles via a fourth thyristor (Ts). The advantage lies in the simple manner in which energy flow is reversed.
Patent DE-3044452-A1 (DE)
Title: Quick-firing ammunition and revolver - has lengthwise groove in round engaged by rib in cartridge chamber
Inventor: SCHMIDT WOLFGANG
IPC: F42B8/02
Filed: 1980-11-26
Abstract: The quick-firing ammunition round is for use in a hand gun, revolver etc, there being a lengthwise rib (6) in the barrel (9) and/or the cartridge chamber (7) of the cartridge case (1) and/or the bullet (2). It can be of hard-wearing material such as hardened steel, inserted in chamber and barrel and welded or riveted, or alternatively cast integral with them. It can be of rectangular or trapezium cross-section, the groove in the round being correspondingly shaped.
Patent DE-3045834-A1 (DE)
Title: Coin operated gaming machine - has stepping motor drive over flexible coupling between rotors, with outer rotor having toothed profile
Inventor: GAUSELMANN PAUL
IPC: G07F17/34
Filed: 1980-12-05
Abstract: A gaming machine of the 'fruit' machine type utilising drums with symbols around the peripheral surface, has a drive with a flexible coupling to avoid shock conditions during braking. The drum (3) is rigidly coupled to an inner motor (8) that is supported on a spindle (10) from the back plate. An outer rotor (6) has a toothed outer profile that allows a toothed belt coupling (7) with a stepping motor (2). The connection between inner and outer rotors is provided by three grooved tracks (12) and mating projections. The two parts are axially loaded into contact by a coil spring (15).
Patent DE-3048606-A1 (DE)
Title: Screened double glazed window - has provision for filling cavity between panes with readily extractable darkening liquid
Inventor: GAVRILOVIC PETAR
IPC: E06B9/24
Filed: 1980-12-23
Abstract: No curtain or blind is needed for darkening, in houses, display areas, caravans, buses, railway coaches or elsewhere, in windows with double panes. The hollow space (5) is filled with liquid, for darkening and insulation. This can have a dark colour, and be pumped into the cavity by a pump (6), or sucked out by it, providing complete or partial darkening according to need and level of filling. The liquid can be non-freezing, and held so that no trace is left on the panes (1,2) after its removal. A blind can also be fitted in the hollow space. This is also applicable to glazed doors and partition walls.
Patent DE-3100641-A1 (DE)
Title: Process for operating an appliance designed for generating cracked gas to produce NH3 synthesis gas
Inventor: MECKEL JOACHIM
IPC: C01B3/38
Filed: 1981-01-12
Abstract: The application relates to a process for operating an appliance designed for generating cracked gas to produce NH3 synthesis gas from coking plant gas, natural gas, refinery gas, liquid gas, naphtha or the like as the feed gas by catalytic cracking by means of steam and air in a double-pipe reactor which is located in a reactor furnace and in whose outer pipe at one end at least the feed gas and steam is introduced and from whose inner pipe, at its end in the same position, the cracked gas is passed out, the outer pipe and inner pipe being in flow connection with one another at the end opposite to the inlet port of the outer pipe and the outlet port of the inner pipe, and both pipes containing catalysts, of which preferably the catalyst of the outer pipe has a higher activity than the catalyst of the inner pipe, and the air being introduced into the inner pipe (3) at the last-mentioned end, at which the inner pipe (3) is in flow connection (6) with the outer pipe (2), and the air preferably being introduced into the gas stream of the inner pipe (3) at different heights. <IMAGE>
Patent DE-3101988-A1 (DE)
Title: Knife
Inventor: GEKELER KARL
IPC: B26B9/02
Filed: 1981-01-22
Abstract: A knife with a preferred cutting direction is described, the cutting efficiency and wearing resistance of which are increased by a special arrangement for grinding the cutting edge. Grinding is arranged as shown in Figure 1 in such a way that it is carried out at an angle of 15 DEG  to 60 DEG  with respect to the cutting edge, the opening of the angle pointing in a direction which is approximately opposite to the preferred cutting direction. This improved arrangement is preferably to be used for grinding knives used in the household. <IMAGE>
Patent DE-3103136-A1 (DE)
Title: Novel bicyclic ether carbonates, process for their preparation, and their use
Inventor: KRIMM HEINRICH DR
IPC: C08G64/02
Filed: 1981-01-30
Abstract: The present invention relates to novel bicyclic ether carbonates of the formula <IMAGE> in which R and R' are methyl or ethyl, to a process for the preparation thereof from ditrimethylolalkanes by reaction with a carbonic acid derivative, to the preparation of a crosslinked polycarbonate therefrom, and to the depolymerisation thereof, and to the use of the novel ether carbonates as copolymerisation components in the preparation of polycarbonates.
Patent DE-3115863-A1 (DE)
Title: d.c. circuit for railway safety systems
Inventor: DEWALD HANS ING GRAD
IPC: B61L23/16
Filed: 1981-04-21
Abstract: The d.c. circuit consists of a plurality of adjacent track sections (A1 to An) which are fed cyclically with a.c. signals of different frequencies from a common transmitter (S) and which transmit a.c. signals extracted from them to a common track-release device (E). By means of the arrangement of relatively short track sections, a high response-sensitivity with respect to axle shunts is achieved, the d.c. circuit having in total the same response-sensitivity as the individual sections. A single double line (L) is sufficient to feed the individual track sections and monitor them. For the track-release indication it is tested whether the monitoring indications output by the individual track sections occur exclusively in the sequence which is specified by the cyclical call-up of the sections. Track current influences lead to a reliable track-occupied indication of the d.c. circuit. <IMAGE>
Patent DE-3119324-A1 (DE)
Title: Method and apparatus for detecting the presence of a strand-like structure, such as, for example, a thread
Inventor: COENEN NORBERT
IPC: B65H63/02
Filed: 1981-05-15
Abstract: To detect the presence of a strand-like structure, such as, for example, a thread (33), a rotatable wheel-like sensing member (20) is moved relative to the thread and transversely to the longitudinal axis of the thread, in such a way that its circle of rotation intersects or touches the thread run, and that a rotation or a change in rotation of the sensing member is used as an indication of the presence of the thread. The sensing member (20) can be a wheel or a disc, the circumference of which has, if appropriate, macroscopic unevennesses. A spiked wheel can also be used. The rotational movement or a change in the rotational movement of the sensing member is indicated, if appropriate recorded and transmitted. <IMAGE>
Patent DE-3122191-A1 (DE)
Title: Shuttering panel composed of two parts which supplement one another to form a rectangle
Inventor: MAIER JOSEF
IPC: E04G9/02
Filed: 1981-06-04
Abstract: A shuttering panel can be composed of two or three shuttering-panel parts which supplement one another, the expansion joint or joints of said two shuttering-panel parts being delimited by stop webs, butt-straps or the like which run, in cross-section, obliquely with respect to the shuttering skin of the shuttering panel and the outer border webs of said shuttering-panel parts. The shuttering-panel parts preferably supplement one another to form a rectangle. The shuttering-panel part whose stop web or webs form an obtuse angle with the shuttering skin may be removed first of all during shuttering removal, as a result of which a correspondingly wide shuttering-removal joint is obtained. The removal of this first shuttering-panel part is facilitated by the conical form which results from the oblique arrangement of the stop web or webs. Shuttering can thus also be easily removed between two downwardly running walls, in shafts or the like.
Patent DE-3122406-A1 (DE)
Title: Sealing arrangement, in particular for rear stern tube seals
Inventor: MEWES GUENTER ING GRAD
IPC: B63H23/32
Filed: 1981-06-05
Abstract: A sealing arrangement, in particular for rear stern tube seals in ships, comprises an annular chamber (4) which is sealed-off with respect to axially adjacent areas (5, 16) and into which a liquid medium is conveyed, this liquid medium lubricating the sealing elements (22, 23). In order to check the medium in the annular chamber (4), the latter is provided on its side with a conduit (10) which leads into the inside of the ship. The conduit (10) extends, however, at such a height that the annular chamber (4) can never be completely emptied via this conduit. In the event of operational faults, for example, or in the event of damage to the conduit (10), a sufficient quantity of the lubricating medium remains at the bottom of the annular chamber (4) so that the circulating bush (2) dips into the medium and lubricates the sealing elements (22, 23) with the medium. <IMAGE>