baber/WOPTO huggingface dataset:
Patent DE-2928804-A1 (DE)
Title: Variable fitting projection screen - has wall mounted supports for frame to hang roller screen
Inventor: SEDEK JAROSLAV
IPC: G03B21/58
Filed: 1979-07-17
Abstract: An adjustable mounting for a projection screen for home use has wall mounted supports, consisting of recessed sleeves (4) into which support frames (3) are slid and secured. The roller type of screen is clipped into the frames and the bottom end of the screen is secured on a wall mounted catch. The fitting does not take up any wall space when not in use. The recessed sleeves can be applied anywhere, even into the sides of large items of furniture. When not in use the rolled screen can be hung vertically from a storage hook.
Patent DE-2929956-A1 (DE)
Title: IC engine with reciprocating valves - has combustion chambers arranged to give working stroke at right angles to shaft
Inventor: BACH BLASIUS
IPC: F02B57/00
Filed: 1979-07-24
Abstract: The engine has four combustion chambers (1) arranged in two opposed pairs at opposite ends of the shaft (6). Sliding contact arms (2) produce ignition simultaneously in two diagonally opposed chambers. After half a revolution of the shaft the other pair of diagonally opposed chambers is filled with fuel air mixture. The fuel pump is driven by cams (3) at the sides of the chambers. The inlet valves are controlled by cams (4) on the shaft. An annular exhaust outlet (5) round each end of the shaft supports cams which convert reciprocating into rotary motion. The working stroke takes place at 90 degrees to the shaft.
Patent DE-2931604-A1 (DE)
Title: Microphone amplifier for locations with noisy backgrounds - uses double microphone with operational amplifier having separate volume and level controls
Inventor: HANNI MANFRED ING GRAD
IPC: H04R3/00
Filed: 1979-08-03
Abstract: The microphone (DM) to allow speech to be transmitted from vehicles, aircraft etc., when there is a high level of background noise, uses a double microphone. This is connected to an amplifier (MVV) connected to transmitting and receiving appts. and is used in conjunction with earphones. Between the amplifier and the transmitter can be connected a device for indicating the signal level visually. The amplifier incorporates an operational amplifier (DV1) with one microphone connected by a potentiometer (RL) to one input, forming a volume control. The other microphone is connected by a fixed resistance (Ro) to the second input, with a variable resistance (Rk) also connected between this input and the output to maintain a correct output level for a determined amplification.
Patent DE-2931861-A1 (DE)
Title: Underground water reservoir for heat pump - has foam insulating layer inside concrete layer with embedded heat exchange coil
IPC: F28D20/00
Filed: 1979-08-06
Abstract: The underground water reservoir is for direct connection to a heat pump or may be used with a solar heating system. It carries an insulating layer of a rigid foam material. This is in turn protected by a load bearing layer of e.g. concrete in which are embedded the coils of a heat exchanger. The tank forming the reservoir is filled with water or other liquid and protected against frost by having in the water bodies filled with a liquid which can be solidified, more easily than water. The tank can be mounted horizontally or vertically.
Patent DE-2934774-A1 (DE)
Title: Natural draught chimney tower - has displacement member in centre of air outlet to prevent cold air intake
Inventor: SCHLAICH PROF DR-ING JOERG
IPC: F28C1/00
Filed: 1979-08-28
Abstract: The natural draught cooling tower is fitted with elements preventing ingress of cold air in the form of one or more displacement members (2) in the centre of the air outlet cross-section (11). The members can be mounted on a mast of the tower, which is built on the rope network or membrane system, and can be anchored by radial ropes to the top of the tower. Each member can have radial bosses supporting an end ring for the tower structure, and it can be circular, or ring shaped in plan view. Each member may have upwards directed diffuser extension, preferably protruding over the tower opening edge.
Patent DE-2935013-A1 (DE)
Title: Brushless DC motor with rapid braking - brakes rotor by closing transistor switches normally used for commutating stator windings
Inventor: BERGER HERMANN ING GRAD
IPC: H02P6/24
Filed: 1979-08-30
Abstract: The motor has two or more stator windings and a permanently- magnetic rotor. The windings are switched according to rotor position. The rotor is braked by closing the switches together. Each winding is connected to a resistor. Each switch is shunted by an antiparallel rectifier diode that closes the circuit carrying the braking current. A switch disables the detectors sensing rotor position and generates the signals for closing when braking occurs. The resistors are also used for measuring current and are consequently connected to high-ohmic coupling resistors. The switches are transistors and are connected to a resistance network coupled to the supply. The advantage lies in fewer components, reliability and rapid braking.
Patent DE-2942093-A1 (DE)
Title: Roof contacting structure for mine roof support - is extendable bar pivoted to piston and unit and extension bar via fixed or adjustable length links
Inventor: KIRCHBRUECHER RUEDIGER
IPC: E21D23/06
Filed: 1979-10-18
Abstract: The roof contacting structure of a mine roof support has a main roof bar (1) pivoted (4) to an extension bar (3). A piston and cylinder unit (5) pivots the extension bar about the main bar to bring it into contact with the roof aligned with the main bar, or into a stowed position beneath a main bar. Pivoted links (8) are connected between the main and auxiliary bars and to the piston and cylinder unit at a pivot (7). The links (8, 9) may be of fixed length or of variable length, a piston and cylinder unit (19) being used as one of the links.
Patent DE-3009708-A1 (DE)
Title: Heat exchanger pressure surge reduction equipment - has partition in connection chamber forming air chamber closed at top
Inventor: SKOCDOPOLE HERBERT DIPL ING
IPC: F28F9/02
Filed: 1980-03-13
Abstract: The equipment reduces pressure surges in a liquid-filled heat- exchanger circuit, the liquid-filled heat-exchanger tubes leading to one or more connection chambers. Each chamber (18,19) in the heat exchanger (1) is divided by a partition (22) so as to form an air chamber (24) closed at the top, the lower edge (23) of the partition being above the level of the bottom of the connection chamber. There can be one or more holes in the partition above the lower edge, and the cross-section of the aperture between the lower partition edge and the chamber bottom can be greater than that of the inlet and outlet unions (20,21).
Patent DE-3011565-A1 (DE)
Title: Heat exchanger for washing machine or dishwasher - allows heat recovery from discharged water via tank in discharge line containing fresh water coil
Inventor: SCHUG PETER
IPC: F28D21/00
Filed: 1980-03-26
Abstract: The heat exchanger comprises a tank (1) with a discharged water inlet (2) at the top and a discharged water outlet (3) at the bottom and enclosing a pipe coil (9) through which fresh water is circulated. The tank water outlet (3) is coupled to a pipe section (4a,4b) which initially projects upwards to the level of the top of the tank (1) and then extends downwards to a point below the base of the tank (1). Pref. the tank water outlet (3) projects from the side of the tank (1) near its base, with a further outlet (6) at the centre of the base coupled via a selectively blocked line with the bottom half of the pipe section (4a,4b) to which the first water outlet (3) is connected. The upper half of this pipe section (4a,4b) is pref. coupled to a return loop leading to the inlet pipe to the tank (1). The heat exchanger allows recovery of heat from the discharged waste water.
Patent DE-3015543-A1 (DE)
Title: Transmission for small motor vehicle - has infinitely variable friction drive with constant torque between engine and gearbox
Inventor: LINDNER HERBERT DR
IPC: B60K17/04
Filed: 1980-04-23
Abstract: The transmission has a fixed ratio gearbox linked to the engine by an infinitely variable friction drive. The latter has a belt driven pulley (2) which drives a friction plate (6) with a bevelled drive face, displaced by a spring support. The drive adjusts the friction drive ratio to ensure an even torque transmission. The transmission is applied particularly to small vehicles, such as self-propelled cultivators and grass mowers. The friction driven plate drives the wheel shafts (9) via a step-down worm gear (7) to form a compact and simple transmission.
Patent DE-3015977-A1 (DE)
Title: Dry chemisorption process following fossil fuel combustion plant - gives calcium sulphate mixt. used as filler for filter ash or slag
Inventor: HOELTER HEINZ ING GRAD
IPC: B01D53/34
Filed: 1980-04-25
Abstract: In a dry chemisorption process and plant following fossil fuel combustion plant, a chemisorption compsn. is injected after the boiler, pref. after the electrofilter, into a dry chemical reaction zone, so that it is deposited on a subsequent (cloth) filter and supplied to the firing zone as CaSO3- CaSO4 mixt. via a conveyor zone by using enough excess air and a temp. of max. 800 (under 800) deg. C. An exothermic reaction takes place and the CaSO4 formed is discharged with the ash and/or the slag. The CaSO4 mixt., which is added to the filter ash or slag as filler, is obtd. easily. Thermal decompsn. of the CaSO4, pollution and disposal problems are avoided.
Patent DE-3026318-A1 (DE)
Title: Intramuscular insulin injection instrument - has trigger spring loaded into frictional contact with spring loaded braked slide
Inventor: BECKER MICHAEL
IPC: A61M5/42
Filed: 1980-07-11
Abstract: The intramuscular injection instrument is particularly for insulin, having a syringe in a holder and an actuating mechanism inserting the needle and thrusting the syringe plunger forward. The holder can be cocked against spring action and secured by a catch, while a slide acting on the plunger rod is moved by a pistol-grip trigger. The spring-loaded (20) slide (5) can be braked, and the trigger (7) is spring-loaded (33) into frictional contact with the slide. There can be a braking and locking member (31) between the slide and the trigger, bearing automatically against the former.
Patent DE-3027417-A1 (DE)
Title: Expansion-screw joint assembly - has elastic material fitting tightly round screw shank and threaded portion end
Inventor: ECKERT ROLF DIPL ING
IPC: F16B33/06
Filed: 1980-07-19
Abstract: The expansion-screw joint has the tapped hole sealed by elastic material such as rubber or plastics. The screw shank and at least the end of the screwed part are enclosed by elastic material fitting tightly against them. This material can be arranged to fill a widened portion of the tapped hole and/or holes through which the screw fits purely by elastic distortion, forming a seal. The design affords effective prevention of corrosion in the tapped hole.
Patent DE-3027642-A1 (DE)
Title: Uniform temp. hollow roller - with radial chambers at each end successively replenished with internally flowing heated liquid
Inventor: BRAND WILHELM
IPC: D21G1/02
Filed: 1980-07-22
Abstract: Heated temp.-controlled flow-through hollow roller has rounded ends inserted with journals; these ends are thick enough for stability and for a sufficiently long uniform bearing surface, they also have inlet and outlet holes for the roller to be partly filled with heating liq. The ends have chambers, each of which is connected to the roller interior by one or more holes on the inner side, where each also has one or more venting holes near to the roller o.d. Uniform temp. is provided over the whole surface; the whole length is therefore available for processing.
Patent DE-3028569-A1 (DE)
Title: Bio:physico:chemical sensor - based on conductivity change of enzyme-coated membrane
Inventor: KAUFMANN KONRAD DIPL PHYS DR
IPC: C12M1/40
Filed: 1980-07-28
Abstract: Device whose electrical conductivity changes in response to change in the surrounding conditions comprises an enzyme-coated membrane immersed in an electrically conductive liq. medium contg. a substrate which undergoes an enzyme-catalysed reaction to produce at least one prod. which alters the conductivity of the membrane. The improvement comprises selecting the effective concn. of enzyme mols. on the active surface of the membrane and the effective concn. of substrate mols. (or clusters thereof) in the liq. medium, taking into account the diffusion rate of the substrate and the rate of the enzyme- catalysed reaction, so as to produce pulsed changes in the conductivity of the membrane. The device can be used to monitor enzyme reactions or to measure pH, temp, electric filed strength or flow rate. The device operates with much lower enzyme and substrate concns. than known devices of this type (cf. Experientia, 28, 256, 1972).
Patent DE-3031543-A1 (DE)
Inventor: HAINKE HANS ULRICH
IPC: F16B13/06
Filed: 1980-08-21
Abstract: The anchoring bolt (12) comprises a spacing bolt (22) and, at its rear end, a sleeve (12) which may diverge so as to form a sector. A threaded section (14) of the spacer bolt (22) pretrudes forwardly beyond the none spaced apart portion of the sleeve (12); this threaded section receives on its pretruding end another ancoring member (16, 28).
Patent DE-3032646-A1 (DE)
Title: Pneumatic tyre has pref. cord reinforced inner tube - and unreinforced outer cover possessing greater extension capability
Inventor: GHIBU MICHAEL DR ING
IPC: B60C5/08
Filed: 1980-08-29
Abstract: A pneumatic tyre is composed of an outer cover having a greater possible extension than the inner tube, it is the inner tube which determines the form of the tyre, thus prestressing the outer cover to this form. The inner tube is pref. of an elastomer, more specifically rubber, and is reinforced with inextensible material, more specifically textile cord or steel tyre cord fabric. In this way it is the inner tube which is made of the expensive material of high quality required for the static loading of the tyre, whereas the outer cover can be made from any suitable material having the necessary wear-resistant properties and road holding properties etc. for the dynamic loading. In particular the outer cover may be of polyurethane.
Patent DE-3041392-A1 (DE)
Title: Transistor-oscillator circuit esp. for radio or TV - uses two NPN transistors forming differential amplifier, and includes mixing stage
Inventor: FENK JOSEF DIPL ING
IPC: H03D7/12
Filed: 1980-11-03
Abstract: Two identical npn bipolar transistors (T1,T2) are connected together by their emitters and to a resistors leading to a reference voltage (earth) provided by a d.c. source (U1). The other pole of source (U1) is connected via resistors (R7,R8) to the collectors of transistors (T1,T2). The base of transistor (T1) forms the control input of the oscillator, and is connected to a parallel resonance tuning circuit with inductances (L) and capacitors (C,C1,C2). Resistors (R2,R3), capacitor (C3), and a d.c. source (U3) are included, and transistors (T1,T2) function as a differential amplifier with feedback. The mixing stage uses npn transistors (T3,T4,T5,T6) with output terminals (A1,A2) and two further npn transistors (T7,t8) are used with another d.c. voltage supply (U2). Input terminals (E1,E2) are connected to the bases of transistors (T7,T8). An operational amplifier (V) is used as the control amplifier.
Patent DE-3045457-A1 (DE)
Title: Laminated wall for ship's hull - has reinforcing rods with U=shaped holder clips, or fastening mandrels
Inventor: MADER PAUL DR
IPC: B63B5/24
Filed: 1980-12-02
Abstract: The laminated wall may be used for boat hulls, aircraft wings or fuselages silos, roofs, etc. It consists of an external and internal skin, and an intermediate core, with rods, which are reinforced by strands of fibres of high tensile strength. The rods are fastened to holders, which in turn are fastened to the external and/or internal skin. The holders are formed by U-shaped integral or two-sectional clips (326), engaging around the rods (328). Alternatively, they consist of a mandrels engaging the rod. The flanks (327) of the clips may have flanges (329) which adhere to one skin, while the clips proper adhere to the other skin.
Patent DE-3100903-A1 (DE)
Title: Toy spinning top
Inventor: ROHRSEITZ WERNER
IPC: A63H1/20
Filed: 1981-01-14
Abstract: Toy spinning top which can be driven by means of a spin bar and which has a transparent cover, covering an especially stationary horizontal disc, and a supporting disc which rotates above the horizontal disc and is driven by the spinning top via a reduction gear and which is connected to toy vehicles moving over an uphill and downhill roadway of the horizontal disc, each toy vehicle being connected, via a resilient supporting arm pressing it downwards onto the roadway, to the supporting disc which has a very small diameter and which leaves the largest part of the horizontal disc free. <IMAGE>
Patent DE-3108111-A1 (DE)
Title: Truck slewing crane
Inventor: DAUTEL HELMUT
IPC: B66C23/44
Filed: 1981-03-04
Abstract: A swivel bearing (18) of a truck slewing crane (11) with a perpendicular slewing axis is supported on a truck (10). The crane bridge (20) of the slewing crane (11) runs horizontally and is supported on the base surface by a crane support (21) at the end opposite the swivel bearing (18). Such truck slewing cranes (11) can be used in particular on light trucks, the frames of which are not robust enough to be able to absorb bending moments. <IMAGE>
Patent DE-3114061-A1 (DE)
Title: Method for fabricating through-plated contact printed circuits
Inventor: SEEGER KLAUS DIPL ING
IPC: H05K3/42
Filed: 1981-04-07
Abstract: The invention relates to a method for fabricating through-plated contact printed circuits by a chemical route, which involves using printed-circuit boards clad with metal on two sides, the metal cladding on at least one side consisting of aluminium. Through-plating from the aluminium layer to the copper layer is problematic on the grounds of adhesion, the risk of corrosion and the poor resistance of the aluminium to the aggressive media of the through-plating process. For these reasons, the aluminium surface is covered with a dense copper layer by means of a metallisation process. Further treatment can then be carried out, as in conventional printed-circuit boards with copper cladding on both sides.
Patent DE-3120612-A1 (DE)
Inventor: SVOBODA RUDOLF DIPL ING
IPC: E05D5/02
Filed: 1981-05-23
Abstract: A two part hinge, particularly for use in furniture construction, comprises a pair of hinge parts 1, 2, one having a projecting hinge pin 5 and the other a corresponding socket 4 but otherwise of generally similar form, each having a body portion rounded at one end adjacent the pin or socket, and one or more projecting anchoring portions 8 of rectangular cross section, these portions having a pair of parallel side faces each formed with a row of teeth 11. Such a hinge is susceptible of very simple manufacture and use. <IMAGE>
Patent DE-3123193-A1 (DE)
Title: Adapter part for word, image and sound carrier housing
Inventor: SPIES RUEDIGER VON
IPC: G11B23/023
Filed: 1981-06-11
Abstract: The adapter part according to the invention has a base part (3) and two leg parts (4, 5), one of the leg parts (4, 5) being arranged at one end of the base part (3) in such a way that the shape of a "U" is produced. The thickness of the base part (3) and of the leg parts (4, 5) is dimensioned in such a way that the inner space enclosed by the base part and the leg parts is suitable for receiving at least one word, image or sound carrier. The longitudinal axes of the leg parts (4, 5) are preferably at an angle greater than 90 DEG  in relation to the longitudinal axis of the base part (3). As a result, if the leg parts and the base part consist of a suitable material, when the adapter part has been pushed into the housing (1) the leg parts are prestressed with respect to the side walls (8) of the housing. <IMAGE>
Patent DE-3128365-A1 (DE)
Inventor: SCHNEIDER ALFRED DIPL ING
IPC: H04Q3/54
Filed: 1981-07-17
Abstract: A circuit arrangement for centrally-controlled telecommunication exchange systems, particularly for time-division multiplex telephone exchange systems, with information exchange between sub-central devices, is characterized by the provision of an input/output processor device, in addition to the central control unit, which comprises an input memory portion and an output memory portion. The input memory portion is divided into sub-memories which receive information intended for a line trunk group and to be processed by the central control unit, while the output memory portion is divided into sub-memories which are assigned to respective buffers for information transfer between the sub-central devices, by-passing the central control unit. For the purpose of information transmission from one line trunk group to another, an auxiliary criterion is added to the information to be transmitted in addition to the address of the destination line trunk group, the auxiliary criterion causing the input/output processor device to write the information directly into the output sub-memory of that sub-central device which serves the destination line trunk group.
Patent DE-3142081-A1 (DE)
Title: Die-casting machine
Inventor: GOEHRING KARL DIPL ING
IPC: B22D17/20
Filed: 1981-10-23
Abstract: In a die-casting machine, the casting material is compressed between two pistons in a casting chamber until a filling ratio of approximately 100% has been reached. After coaxial movement of the two pistons, the casting material is then forced into the mould cavity of the casting mould counter to the pressure of an inert gas. The counterpressure exerted by the inert gas ensures that no swirling, which could lead to inclusions or voids in the finished workpiece, occur even in the phase in which the casting material leaves the space between the two pistons and enters the mould cavity.
Patent DE-3204734-A1 (DE)
Title: Lubricant
Inventor: REBHAN FRANZ
IPC: C10M159/08
Filed: 1982-02-11
Abstract: A lubricant, especially for motor chain saws, consists essentially of an oil produced from vegetable or animal products.
Patent DE-3213217-A1 (DE)
Title: Method and circuit arrangement for remote control of electrical devices
Inventor: EICHLER JOACHIM
IPC: H04M11/00
Filed: 1982-04-08
Abstract: The subject matter of the invention concerns a method and circuit arrangement for remote control of electrical devices (V). The telephone number of a receiving telecommunications station (E) is dialled from any dial-up telecommunications station (A). The receiving telecommunications station (E) is acoustically, inductively or directly coupled with a converter switching device (S) which is indirectly or directly connected to the electrical devices (V) concerned. By counting the ringing signals transmitted back to the dial-up telecommunications station (A), a code can be formed which comprises a first ringing signal sequence with a specific number of ringing signals and whose second ringing signal sequence, after a specific pause, instigates the actuation procedure via the converter switching device (S). <IMAGE>
Patent DE-3215696-A1 (DE)
Title: One-way restrictor
Inventor: OTT HELMUT
IPC: F16K15/04
Filed: 1982-04-27
Abstract: The invention relates to a one-way restrictor, in particular for air, with a restriction bore whose cross-section of flow can be varied by rotating a restriction bush. The restriction bush consists of an axially split ring made of a flexible plastic so that it can be pushed radially over the restriction bore, in the course of which it bears under radial preloading on the closure piece containing the restriction bore and seals off the restriction bore.