baber/WOPTO huggingface dataset:
Patent DE-4023446-A1 (DE)
Title: Controlled bending roller - has control beam round carrier beam over its length to dispense with external oil pressure supply
Inventor: STRACH LOTHAR
IPC: F16C13/00
Filed: 1990-07-24
Abstract: The roller with a controlled bending action, to apply pressure to web material passing between rollers up to 10m wide, has a control beam covering the whole length of the carrier beam within the hollow roller rotating round it. ADVANTAGE - The roller assembly does not require an external oil pressure generator.
Patent DE-4026054-A1 (DE)
Title: Ceramic substrate circuit board - has layer of intersecting metallic tracks forming grid
Inventor: BARZ HERBERT
IPC: H05K1/09
Filed: 1990-08-17
Abstract: A circuit has a ceramic carrier plate (1) with metallic conducting tracks arranged on one side and a metallic layer (3) on the other side. The plate (1) with the tracks and the metallic layer (3) is subjected to heat. The metallic layer (3) has tracks (2,2') comprising to form a grid structure. USE/ADVANTAGE - Higher e.m. tolerance. Danger of ceramic plate breaking during baking process considerably reduces.
Patent DE-4032856-A1 (DE)
Inventor: BLAESING HORST
IPC: C02F1/46
Filed: 1990-10-13
Abstract: 2.1 In electrolytic processes using membranes, it is essential to ensure a sufficiently good flow at the membrane surfaces to avoid coating the membranes with interfering reaction products originating from the process solutions. The object is to find a constructional solution for the forced movement of electrolyte. This solution should be universally applicable in membrane electrolytic cells and less expensive in terms of apparatus than a pump circuit. 2.2 A membrane electrolytic module is proposed which contains air jets (4) underneath the membrane (3) both in the electrode space (6) and in the process solution space (7) over the entire width of the membrane. Guide grids (5) which allow the flow through are positioned at the surface of the membrane. 2.3 The membrane electrolytic module is suitable for use in membrane electrolytic cells intended for a very wide range of applications, for example for producing electrodeposited coatings, for regenerating electroplating baths and for electrolytic purification of waste water.
Patent DE-4033687-A1 (DE)
Title: Arrangement for balancing rotating cutting disc - has single dispenser and injector of balancing liq. fed into balancing chambers according to detected imbalance
Inventor: MOENCH UWE
IPC: G01M1/32
Filed: 1990-10-23
Abstract: An arrangement for balancing a rotating cutting disc contains several balancing chambers (5-8) rotating with the disc with liquid inlets (10-13) in a plane perpendicular to the rotation axis, a dispenser connected to a liquid reservoir and driven according to a measured imbalance and an injector (4) connected to the dispenser. The injector has a single nozzle unit (3) for all balancing chambers. The inlets lie on a common radius about the rotation axis and the nozzle is fixed at this radius opposite the passing inlets. The dispenser is actuated at a defined rotation angle of the disc to inject balancing liquid into the required chambers. USE/ADVANTAGE - The arrangement enables cutting disc balancing at reduced equipment cost.
Patent DE-4035132-A1 (DE)
Title: Circuit for charging capacitor to specified voltage - uses pulses of different widths computed from response to test pulse
Inventor: BAHM KLAUS DIPL ING
IPC: H02M9/04
Filed: 1990-11-06
Abstract: A capacitor (3) is charged to a specified rated voltage using a pulsed DC source (1) which supplies charging pulses of equal amplitude, raised in voltage by a converter (2). A voltage signal taken from a potential divider (5) across the condenser terminals is amplified by the buffer amplifier (6) and passed through an analogue-digital converter (7) to a microcontroller (9). This signal is compared with a reference signal (10) equivalent to the required rated voltage and the output is passed via a pulse width modulator (11) back to the voltage source (1). From the response to an initial test pulse sent to the condenser using the shortest available pulse duration, the microcontroller computes how many pulses of the maximum available pulse duration are necessary to bring the condenser voltage to just under the required voltage and the duration of the final, shorter pulse to bring the voltage exactly to the required voltage. With the number and length of pulses determined, the condenser is then charged. USE/ADVANTAGE - Charging capacitors especially for high voltage battery chargers used in laser operation. Reaches required voltage exactly in minimum time.
Patent DE-4036976-A1 (DE)
Title: Electrophotographic moisture reversal developer unit - operates without toner developer on reverse side of electrophotographic photoreceptor between guide and electrode
Inventor: KURIU SADAO
IPC: G03G15/10
Filed: 1990-11-20
Abstract: An electrophotographic moisture reversal developer unit has a counter electrode with a bias voltage applied and a guide plate of electrically non-conducting material. A photoreceptor (13a) is passed between the counter electrode (2) and guide plate (3) to perform the reverse developing with a wet developer. The non-conducting material of the guide plate contains at least one of the materials: plastics, rock, porcelain, ceramic, metal and plastics laminate and insulation resin-coated metal. ADVANTAGE - Designed to operate without toner developer on reverse side of electrophotographic photoreceptor.
Patent DE-4042396-A1 (DE)
Title: Sewer leak locating system - has pressure chamber formed between double walls on travelling remote controlled machine
Inventor: ALBRECHT KLAUS DIPL ING
IPC: G01M3/00
Filed: 1990-04-20
Abstract: The system locates leaks in sewers using a travelling and remote-controlled machine (1). the latter contains pressure-generating equipment. It has two double walls (2) forming with the section of the sewer between them a pressure chamber. Instruments measure the pressure patterns in this chamber and those inside the double walls, and these are compared in a  computer which indicates the rate of leakage. ADVANTAGE - No need for emptying and intensive cleaning of sewer beforehand.
Patent DE-4106534-A1 (DE)
Title: Telephoto-lens with front and rear focusing groups - involves focussing length of focussing group forming, with front group, tele-lenses of different total focussing length
Inventor: KOELSCH LOTHAR
IPC: G02B15/02
Filed: 1991-03-01
Abstract: The focus length of the tele-lens arrangement is alterable by putting together two different lens parts. As objective parts, object-side front groups (FR1) with fixed lenses or lens groups and picture-side focussing groups (FO1) with lenses or lens groups displaceable one against the other are provided. The foussing length is so selected that the focussing group and the front group produce different total focussing lengths. Each front group and each focussing group are modularly combinable to form tele-lenses of differing focussing lengths and apertures. With apochromatic correction, the tele-lens has an opening ratio of 2.8 and a focussing length of 280 mm. ADVANTAGE - A tele-lens arrangement for photographic cameras.
Patent DE-4107378-A1 (DE)
Title: Multiple use copying masks for prodn. of printing plates - comprising transparent support film bearing the image to be copied, covered with protective layer of transparent film-forming polymer contg. transparent matting agent
Inventor: LITTMANN DIETER DR
IPC: G03F1/00
Filed: 1991-03-08
Abstract: Masks consisting of (A) an optically transparent support film 10-500 micro-m thick, (B) an image mask layer 0.01-1 micro-m thick with optically transparent non-image regions and image regions of higher optical density obtd. by imagewise application of a 0.01 - 1 micro-m thick energy absorbing layer contg. a finely dispersed material of high optical density or an energy absorbing layer made of this, or by removing the non-image regions from this layer or by transferring the image regions to the support film (A), and (C) a 0.01 - 5 micro-m thick, non-tacky, optically transparent protective layer adhered strongly to the mask layer (B), consisting of a polymer which forms films with high tensile strength and 0.1-10 wt.% w.r.t. (C) of an optically transparent matting agent with a mean particle size of 0.1-10 micro-m. USE/ADVANTAGE - The copying masks can be used repeatedly in close contact with positive- or negative working photosensitive layers without deterioration of the mask by migration of low mol. components from the photosensitive material into the mask. This is an improvememnt over earlier systems in which a protective layer was applied over the photosensitive layer, which caused a redn. in resolution of the image during exposure. The masks are useful e.g. in the prodn. of printing plates, screen printing plates and photoresists e.g. for printed circuit
Patent DE-4108140-A1 (DE)
Title: Component carrier for switch cabinet - has carrier plate supporting switch devices secured to hat profile rails
Inventor: KIST PETER
IPC: H02B1/32
Filed: 1991-03-13
Abstract: The component carrier is attached to the hat profile rails (1,2) within the switch cabinet and comprises a mounting plate (10) with a hook element (11) at its rear (8), engaging one of these rails (1, 2). The front side (7) of the mounting plate (10) has similar hat profile rails (19, 20) for supporting a group of switch devices which are wired together after mounting on the carrier plate (10) to form a switch module. The carrier plate is secured in the switch cabinet via a locking device (13, 18) pref. comprising a slider (13) and a cooperating retaining hook (18). ADVANTAGE - Allows simple replacement of individual switch modules.
Patent DE-4110408-A1 (DE)
Title: Thermal insulation panels for underside of roof - has panels supported on beams which fit contours of panel edges
Inventor: UMBSCHEIDEN HERBERT
IPC: E04D12/00
Filed: 1991-03-29
Abstract: The thermally insulating layer is attached to the underside of a roof by panels (1) made from plastics foam.  These panels are supported on beams (6) made of steel, aluminium or plastics. The upper part of the beam is formed as a hollow trapezoidal section. The lower part of the beam has a cross-section so formed that one side (3) of the beam fits into the matching edge of the side of a panel which faces the roof ridge whilst the other side of the beam fits in a groove in the side of the adjoining panel.
Patent DE-4110507-A1 (DE)
Inventor: BERGER JOHANN
IPC: F23R3/26
Filed: 1991-03-30
Abstract: The combustor proposed has, located at the head end of the combustion chamber, at least one fuel-inlet nozzle (9) and at least one swirl device (7), which can be regulated as a function of the load, for the supply of combustion air, the swirl device having radial/tangential apertures (3) between the radial walls of an annular body disposed coaxially with the nozzle. Extending into these apertures are fingers (5) located round the end of a sleeve (4) which can be moved with respect to the annular body. The sleeve with its fingers is disposed so that it can be displaced longitudinally across the outside surface of the annular body, the fingers being angled with respect to the central combustor axis so that they are parallel to the longitudinally separated walls of the apertures and extending over the whole length of the apertures. The combustor proposed, optionally combined with at least one stationary swirl device (8), gives combustion with low polluant levels.
Patent DE-4112414-A1 (DE)
Title: Singulating device for vibrating yarn package feeder - has two inclined motors with eccentric weights and yarn package throughput controlled by motor speed
Inventor: BUEHREN HEINZ
IPC: B65H57/16
Filed: 1991-04-16
Abstract: Singulator has a circular feed chamber (2) with a spiral feed passage (3) leading to a delivery point (8). The vibrator comprises a motor (9) with one or more eccentric weights (11, 12) mounted on the motor shaft (10). The motor is driven through a frequency changer and a controller adjusts the motor speed to give the required delivery rate. The drive can have two frequency steps which are used alternately by the controller. Two motors inclined to the vertical can be used on opposite sides of the feed chamber. A vibrating singulating feeder pref. is carried on flexible mountings (7) and driven by two asynchronous electric motors with their shafts (10', 20') inclined in a direction opposite to the feeding direction. The obtd. vertical and tangential force components promote feeding, while the radial components cancel each other out. Throughput is by speed control which is carried out by switching between two preset fequencies, either manually or through a sensor. USE/ADVANTAGE - Control of the throughput of a vibrating yarn package feeder is improved.
Patent DE-4112553-A1 (DE)
Title: Level indicator for underground pit mining - contains resistive chain with reed switches in slide tube for float moving with level of liq. in tank, level switch on tank stimulating resistive chain and accumulator in safe housing
Inventor: RIEGER PETER
IPC: H01H36/02
Filed: 1991-04-17
Abstract: A level indicator has a display of the measured level (2) of liq. in a tank (1). A resistive chain (4) arranged inside a slide tube (3) extending over the height of the tank has red switches associated with its resistors. A float (5) moves up and down the slide tube as the liq. level varies. The resistive chain is stimulated via the float by a level switch (6) mounted on the tank. The level indicator is supplied with electrical power by an accumulator (11) mounted in an intrinsically safe housing (10). USE - Tanks used in underground pit mining.
Patent DE-4112890-A1 (DE)
Inventor: SZUECS JOHAN
IPC: B24C1/00
Filed: 1991-04-19
Abstract: The present invention relates to a process and a device for cleaning surfaces, in particular delicate surfaces which have been contaminated and attacked by environmental effects by means of a jet consisting of fine blasting material and of air. A blasting material is used which contains particles of at least one cleaning agent which has been crystallised through cooling. <IMAGE>
Patent DE-4117117-A1 (DE)
Title: Three=dimensional imaging display of object - scanning object to generate sequence of images that can be reconstructed to display specific features
Inventor: HOEHNE KARL-HEINZ PROF DR
IPC: G06T15/00
Filed: 1991-05-25
Abstract: The dimensional imaging system has the object (1) scanned (2) and a sequence of signals entered into memory (4). The signals obtained can relate to different 2 dimensional planes and an interpolator (5) may be used to reconstruct the image. Volume elements may also be generated to a raster pattern and can be combined to form the image. Values are combined in a memory (7) together with input parameters (8) and values from an attribute memory (9). Specific regions may be displayed on a VDU (14). USE/ADVANTAGE - Allows 3D visual representation of features of object e.g. brain for medical application.
Patent DE-4117178-A1 (DE)
Title: Bottle top fitting machine - has spring loaded press to fit over bottle top with pressure sensors on spring supports
Inventor: BERNHARD HERBERT
IPC: B67B3/12
Filed: 1991-05-25
Abstract: The bottle tops, e.g. crown tops, are pressed onto the top of the bottle by a shaped rig, with the sides of the top pressed over the lipped bottle top to secure it in position. The fitting rig has integral springs (22, 24) with the spring pressure monitored during fitting to ensure process control. Each spring seat includes a pressure sensor (26, 27). The sensor outputs are taken to the process controller (28). By monitoring the spring pressure during sealing faulty seals can be detected and displayed (29). If any spring breaks its effect is immediately detected. ADVANTAGE - Simple process control, failsafe control.
Patent DE-4117227-A1 (DE)
Title: Vibration device for electric razor or hair-cutter - uses oscillation device controlled by electric stator with resetting springs limiting oscillation amplitude
Inventor: DIEFENBACH GERHARD
IPC: H02K33/06
Filed: 1991-05-27
Abstract: The vibration device has an oscillation element cooperating with a stator device (3) for oscillation about a fixed point, its movement transferred to the vibration stage (25) via a lever mechanism (17). The oscillation element is held in a centre rest position when no current is supplied to the stator coils (70 via resetting springs (27a,27b), which also limit the oscillation movement when the stator coils (7) are supplied with an AC signal of given frequency. The oscillation element has an oscillation angle of more than 35 degrees, the characteristic frequency of the mechanical oscillation frequency being greater than that of the signal frequency fed to the stator coils (7). ADVANTAGE - Small operating current and high efficiency.
Patent DE-4117950-A1 (DE)
Title: Pipe driven through ground - comprises pipe inside concrete body with end-pieces of ductile cast iron
Inventor: SCHAEFERTOENS JOERN-HENRICH
IPC: F16L9/14
Filed: 1991-05-31
Abstract: The pipe for driving through the ground comprises an outer tubular concrete body (1) with a pair of end-pieces (3,4) of ductile cast iron, inside which is a pipe (2), preferably earthenware.  The body with end-pieces is slightly longer than the pipe, and has annular recesses at the end-pieces to accommodate an annular seal (11) bearing against the outer pipe surfaces (6). The end-pieces can have mating faces transmitting thrust loads, and annular grooves (9,10) for centring in the transverse direction. USE/ADVANTAGE - Pipes with max strength and resistance to chemical action, being esp. for sewers.  Pipe may be driven into place through the ground.
Patent DE-4120075-A1 (DE)
Title: Treatment of aq. alkaline developer soln. for offset printing plate - by pptn. of dissolved cpds. esp. silicate with metal ions to reduce vol. of special waste
Inventor: RAUH WOLFGANG DIPL CHEM
IPC: C02F1/52
Filed: 1991-06-18
Abstract: Treatment of aq. alkaline solns. involves converting (pt. of) the dissolved components, esp. silicate ions, into water-insol. cpds. (I) by adding metal ions. The soln. is pref. treated with FeCl3, NiCl2, MgCl2 or Al2(S04)3 soln. and pref. also weak acid(s) to accelerate neutralised and other additive(s), pref. polyelectrolyte(s), to improve the granulation of (I). The pH is controlled during treatment. (I) are sepd. from the soln., pref. by filtration. ADVANTAGE - This method of disposal is economical, since the vol. of special waste is reduced considerably. The remaining, pref. pH neutral, water liquor can be discharged into the sewer systedd
Patent DE-4122787-A1 (DE)
Title: Catalytic converter monitoring schemes for an IC engine - using computed outlet temp. values useful for automobile engine management systems
Inventor: MEIER-GROTRIAN JOACHIM DR ING
IPC: F01N11/00
Filed: 1991-07-10
Abstract: Catalytic exhaust gas purifier (1) comprising actual element (2) in a housing (3) in an automobile exhaust system to receive engine gas flow in the direction arrowed. On attaining a min. operating temp. an exothermic reaction takes place on the catalyst surface (2), which eliminates harmful, incomplete combustion residues. This exotherm can be monitored by the differential temperatures recorded by the 'before and after' probes (6, 5); practical value of this measured parameter, is limited due to its dependence on operating conditions. By this method the processor (8) computes a value for the temnp. at probe (5), using the mass flowrate as measured by the flow element (9), and knowledge of the geometry and thermal capacity of the catalyst (2). The processor (8), which can be part of an engine management system, inputs a signal, corresp. to the calculated outflow temp. to the analyser (7) which also receives the actual temp. signal from the inlet probe (6). The analyser makes a step calculation, and inputs the signals transmitter (10) with a differential temperature value; if this value fails to reach a predetermined set-point, the unit alarms. Alternatively, the so-determined corrected temp. differential can be used to used to provide continuously displayed indication of the performance of the catalyst unit. USE/ADVANTAGE - I.C. engine management systems. Monitoring system which is able to function consistently, despite fluctuation of operating conditions (e.g. during intervals when the catalyst is unable to operate due to low temp..
Patent DE-4129037-A1 (DE)
Inventor: SPINDLER KLAUS DR ING
IPC: C10J3/50
Filed: 1991-08-31
Abstract: Described is a pressure-operated coal-gasification unit (1) which is linked to a power-generation facility (5) and which is continuously supplied with a suspension of coal. The coal suspension contains, in addition to the coal powder used as the fuel, a calorific liquid. A pump (14) is used to bring the suspension to a suitable pressure for feeding into the gasification unit (1). The suspension is preferably prepared using petroleum oil, mineral oil and/or distillation products of these oils. The efficiency of this method is comparable with that of batch feeding, but requires less complex equipment and is more reliable.
Patent DE-4137322-A1 (DE)
Title: Aquarium=water internal heating system - comprises electrically heated body in filter circuit through which water flows
Inventor: ROEDER SEN ALFRED
IPC: A01K63/06
Filed: 1991-11-13
Abstract: Internal heating system for aquarium water uses an electrically-heated immersed body. The water to be heated flows through this body, which is mounted directly into the filter circuit inside the aquarium. The body can be hollow and bar-shaped, comprising an outer metal pipe forming the casing and contg. a further pipe extending axially and through which the water flows. ADVANTAGE - Even heating of water as it flows.
Patent DE-4138456-A1 (DE)
Title: Soil sampler for preparing environmental samples taken from ground - has contra-rotating electrically driven roller feed with cylindrical wire brush
Inventor: ROEDEL GERHARD DIPL ING
IPC: G01N33/24
Filed: 1991-11-22
Abstract: The soil sampling machine has a rotating roller (3) with an outer periphery formed by a cylindrical wire brush (3A) which is electrically driven in contra-rotation to a second driven roller (2) of similar diameter having a smooth steel periphery (2A). A gap of 3 to 4 mm is provided between the rollers (2,3) and the roller speed ratio i.e. roller(2)/roller(3) is optimal at 65/1000 rpm. Samples entering at the hopper (4) are thereby loosened/mixed without alteration to their naturally occurring grading for discharge to the collecting tray (6). USE/ADVANTAGE - Enables high sample throughput with much reduced labour/attention in portable unit suitable for laboratories as a result of low noise. Permits course gradings e.g. stones to pass through separation and mixing process without degradation by crushing.
Patent DE-4139012-A1 (DE)
Title: Vehicular controller adjusting wheel-slip ratio for steering angle - computes target slip ratios for front and rear wheels from measurements of longitudinal and transverse speeds
Inventor: TANAKA SHINICHIRO
IPC: B60T8/66
Filed: 1991-11-27
Abstract: The deviation from straightness of the front and rear wheels is calculated (170, 172) from measurements of the angle of yaw (144) and longitudinal and transverse velocities (146, 147) which contribute also to calculation (174) of a reference wheel speed. Front and rear target wheelslip ratios (176, 178) are worked out for controls (180, 182, 184) of brake fluid pressure and rotational speed targets and throttle flap position. Wheelslip is corrected by braking of the affected wheels. ADVANTAGE - Lateral and longitudinal forces are held to optimal values or steps to guarantee satisfactory acceleration and deceleration with high directional stability.